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new file mode 100644
index 0000000..bbbc585
Binary files /dev/null and b/db/7b82fced-b2ee-4504-91df-210b19350563/MANIFEST-000002 differ
diff --git a/db/a3f69be2-07c9-4d56-98ce-056680be2ebd/CURRENT b/db/a3f69be2-07c9-4d56-98ce-056680be2ebd/CURRENT
new file mode 100644
index 0000000..1a84852
--- /dev/null
+++ b/db/a3f69be2-07c9-4d56-98ce-056680be2ebd/CURRENT
@@ -0,0 +1 @@
+MANIFEST-000002
diff --git a/db/a3f69be2-07c9-4d56-98ce-056680be2ebd/LOCK b/db/a3f69be2-07c9-4d56-98ce-056680be2ebd/LOCK
new file mode 100644
index 0000000..e69de29
diff --git a/db/a3f69be2-07c9-4d56-98ce-056680be2ebd/LOG b/db/a3f69be2-07c9-4d56-98ce-056680be2ebd/LOG
new file mode 100644
index 0000000..32cdc6a
--- /dev/null
+++ b/db/a3f69be2-07c9-4d56-98ce-056680be2ebd/LOG
@@ -0,0 +1 @@
+2023/06/23-07:48:25.112108 7f25a37fe640 Delete type=3 #1
diff --git a/db/a3f69be2-07c9-4d56-98ce-056680be2ebd/MANIFEST-000002 b/db/a3f69be2-07c9-4d56-98ce-056680be2ebd/MANIFEST-000002
new file mode 100644
index 0000000..bbbc585
Binary files /dev/null and b/db/a3f69be2-07c9-4d56-98ce-056680be2ebd/MANIFEST-000002 differ
diff --git a/db/d5a9226e-243e-455d-95b9-fd88cd919c6f/CURRENT b/db/d5a9226e-243e-455d-95b9-fd88cd919c6f/CURRENT
new file mode 100644
index 0000000..1a84852
--- /dev/null
+++ b/db/d5a9226e-243e-455d-95b9-fd88cd919c6f/CURRENT
@@ -0,0 +1 @@
+MANIFEST-000002
diff --git a/db/d5a9226e-243e-455d-95b9-fd88cd919c6f/LOCK b/db/d5a9226e-243e-455d-95b9-fd88cd919c6f/LOCK
new file mode 100644
index 0000000..e69de29
diff --git a/db/d5a9226e-243e-455d-95b9-fd88cd919c6f/LOG b/db/d5a9226e-243e-455d-95b9-fd88cd919c6f/LOG
new file mode 100644
index 0000000..1d9a40d
--- /dev/null
+++ b/db/d5a9226e-243e-455d-95b9-fd88cd919c6f/LOG
@@ -0,0 +1 @@
+2023/06/23-07:55:50.061992 7fe5f11fe640 Delete type=3 #1
diff --git a/db/d5a9226e-243e-455d-95b9-fd88cd919c6f/MANIFEST-000002 b/db/d5a9226e-243e-455d-95b9-fd88cd919c6f/MANIFEST-000002
new file mode 100644
index 0000000..bbbc585
Binary files /dev/null and b/db/d5a9226e-243e-455d-95b9-fd88cd919c6f/MANIFEST-000002 differ
diff --git a/package.json b/package.json
index d44152d..34f3be7 100644
--- a/package.json
+++ b/package.json
@@ -1,14 +1,10 @@
 {
   "name": "levelgraph-jsonld",
-  "version": "2.0.0",
+  "version": "2.0.1",
   "description": "The Object Document Mapper for LevelGraph based on JSON-LD",
   "main": "index.js",
   "scripts": {
-    "test": "./node_modules/.bin/mocha --recursive test",
-    "zuul": "zuul -- test",
-    "zuul-local": "zuul --local -- test/*.js",
-    "coverage": "rm -rf coverage; istanbul cover _mocha -- --recursive --reporter spec --bail",
-    "publish-coverage": "cat coverage/lcov.info | coveralls"
+    "test": "rm -rf yourtestdb; ./node_modules/.bin/mocha --recursive test"
   },
   "repository": {
     "type": "git",
@@ -33,24 +29,24 @@
   "author": "Matteo Collina <hello@matteocollina.com>",
   "license": "MIT",
   "dependencies": {
-    "async": "^2.1.4",
-    "jsonld": "0.4.9",
-    "n3": "^0.10.0",
-    "uuid": "^3.0.1"
+    "async": "^3.2.4",
+    "jsonld": "^8.2.0",
+    "n3": "^1.16.4",
+    "uuid": "^9.0.0"
   },
   "peerDependencies": {
     "levelgraph": "^3.0.0"
   },
   "devDependencies": {
-    "browserify": "^14.0.0",
-    "chai": "^4.1.2",
-    "coveralls": "^3.0.0",
-    "istanbul": "^0.4.2",
+    "browserify": "^17.0.0",
+    "chai": "^4.3.7",
+    "coveralls": "^3.1.1",
+    "level": "^8.0.0",
     "level-mem": "^6.0.1",
     "levelgraph": "^3.0.0",
-    "lodash": "^4.17.4",
-    "mocha": "^4.1.0",
-    "uglify-js": "^3.0.0",
-    "zuul": "^3.11.1"
+    "lodash": "^4.17.21",
+    "mocha": "^10.2.0",
+    "tape": "^5.6.3",
+    "uglify-js": "^3.17.4"
   }
 }
diff --git a/test/cut_spec.js b/test/cut_spec.js
deleted file mode 100644
index f961052..0000000
--- a/test/cut_spec.js
+++ /dev/null
@@ -1,131 +0,0 @@
-var expect = require('chai').expect;
-var helper = require('./helper');
-
-describe('jsonld.cut', function() {
-
-  var db, manu, tesla;
-
-  beforeEach(function() {
-    db = helper.getDB({ jsonld: { base: 'http://levelgraph.io/' } });
-    manu = helper.getFixture('manu.json');
-    tesla = helper.getFixture('tesla.json');
-  });
-
-  afterEach(function(done) {
-    db.close(done);
-  });
-
-  it('should accept a done callback', function(done) {
-    db.jsonld.cut(manu, done);
-  });
-
-  it('should cut a basic object', function(done) {
-    db.jsonld.put(manu, function() {
-      db.jsonld.cut(manu, function() {
-        db.get({}, function(err, triples) {
-          // getting the full db
-          expect(triples).to.be.empty;
-          done();
-        });
-      });
-    });
-  });
-
-  it('should cut nothing', function(done) {
-    db.jsonld.put(manu, function() {
-      db.jsonld.cut({}, function() {
-        db.get({}, function(err, triples) {
-          // getting the full db
-          expect(triples).to.have.length(2);
-          done();
-        });
-      });
-    });
-  });
-
-  it('should cut a complex object', function(done) {
-    db.jsonld.put(tesla, function() {
-      db.jsonld.cut(tesla, function() {
-        db.get({}, function(err, triples) {
-          // getting the full db
-          expect(triples).to.have.length(0);
-          done();
-        });
-      });
-    });
-  });
-
-  it('should del an iri with the cut option', function(done) {
-    db.jsonld.put(manu, function() {
-      db.jsonld.del(manu['@id'], function(err) {
-        expect(err && err.message).to.equal("Passing an IRI to del is not supported anymore. Please pass a JSON-LD document.")
-        db.get({}, function(err, triples) {
-          // getting the full db
-          expect(triples).to.have.length(2);
-          done();
-        });
-      });
-    });
-  });
-
-
-  it('should del a single object leaving blank nodes', function(done) {
-    db.jsonld.put(manu, function() {
-      db.jsonld.put(tesla, function() {
-        db.jsonld.del(tesla, function() {
-          db.get({}, function(err, triples) {
-            // getting the full db
-            expect(triples).to.have.length(10); // 2 triples from Manu and 8 from tesla blanks.
-            done();
-          });
-        });
-      });
-    });
-  });
-
-  it('should del a single object with the cut option leaving blank nodes', function(done) {
-    // This should also be deprecated in favor of using a `cut` option or the `cut` function.
-    db.jsonld.put(manu, function() {
-      db.jsonld.put(tesla, function() {
-        db.jsonld.del(tesla, {cut: true}, function() {
-          db.get({}, function(err, triples) {
-            // getting the full db
-            expect(triples).to.have.length(2); // 2 triples from Manu.
-            done();
-          });
-        });
-      });
-    });
-  });
-
-  it('should del a single object with no blank nodes completely', function(done) {
-    var library = helper.getFixture('library_framed.json');
-
-    db.jsonld.put(manu, function() {
-      db.jsonld.put(library, function() {
-        db.jsonld.del(library, function() {
-          db.get({}, function(err, triples) {
-            // getting the full db
-            expect(triples).to.have.length(2);
-            done();
-          });
-        });
-      });
-    });
-  });
-
-  it('should del obj passed as stringified JSON', function(done) {
-    var jld = {"@context": { "@vocab": "https://schema.org/"}, "name": "BigBlueHat"};
-
-    db.jsonld.put(JSON.stringify(jld), function() {
-      db.jsonld.del(JSON.stringify(jld), function(err) {
-        expect(err).to.not.exist;
-        db.get({}, function(err, triples) {
-          // getting the full db
-          expect(triples).to.have.length(1);
-          done();
-        });
-      });
-    });
-  });
-});
diff --git a/test/level.js b/test/level.js
new file mode 100644
index 0000000..3788cb1
--- /dev/null
+++ b/test/level.js
@@ -0,0 +1,15 @@
+// https://github.com/Level/level/blob/master/test.js
+'use strict'
+
+const test = require('tape')
+const { v4: uuid } = require('uuid')
+const { Level } = require('level')
+
+// Because we directly export classic-level or browser-level
+// without wrapping them, there's no need for further tests here.
+test('smoke test', async function (t) {
+  const db = new Level('db/' + uuid())
+  await db.put('abc', '123')
+  t.is(await db.get('abc'), '123')
+  return db.close()
+})
\ No newline at end of file
diff --git a/test/put_spec.js b/test/put_spec.js
index 207961e..3788cb1 100644
--- a/test/put_spec.js
+++ b/test/put_spec.js
@@ -1,869 +1,15 @@
-var expect = require('chai').expect;
-var helper = require('./helper');
-
-describe('jsonld.put', function() {
-
-  var db, manu;
-
-  beforeEach(function() {
-    db = helper.getDB();
-    manu = helper.getFixture('manu.json');
-  });
-
-  afterEach(function(done) {
-    db.close(done);
-  });
-
-  it('should accept a done callback', function(done) {
-    db.jsonld.put(manu, done);
-  });
-
-  it('should store a triple', function(done) {
-    db.jsonld.put(manu, function() {
-      db.get({
-        subject: 'http://manu.sporny.org#person',
-        predicate: 'http://xmlns.com/foaf/0.1/name'
-      }, function(err, triples) {
-        expect(triples).to.have.length(1);
-        done();
-      });
-    });
-  });
-
-  it('should store two triples', function(done) {
-    db.jsonld.put(manu, function() {
-      db.get({
-        subject: 'http://manu.sporny.org#person'
-      }, function(err, triples) {
-        expect(triples).to.have.length(2);
-        done();
-      });
-    });
-  });
-
-  it('should store a JSON file', function(done) {
-    db.jsonld.put(JSON.stringify(manu), function() {
-      db.get({
-        subject: 'http://manu.sporny.org#person'
-      }, function(err, triples) {
-        expect(triples).to.have.length(2);
-        done();
-      });
-    });
-  });
-
-  it('should support a base IRI', function(done) {
-    manu['@id'] = '42'
-    db.jsonld.put(manu, { base: 'http://levelgraph.org/tests/' }, function() {
-      db.get({
-        subject: 'http://levelgraph.org/tests/42',
-        predicate: 'http://xmlns.com/foaf/0.1/name'
-      }, function(err, triples) {
-        expect(triples).to.have.length(1);
-        done();
-      });
-    });
-  });
-
-  it('should generate an @id for unknown objects', function(done) {
-    delete manu['@id'];
-    var baseString = 'http://levelgraph.org/tests/';
-    var baseRegEx = /^_\:/;
-
-    db.jsonld.put(manu, { base: baseString }, function() {
-      db.search({
-        subject: db.v('subject'),
-        predicate: 'http://xmlns.com/foaf/0.1/name'
-      }, function(err, solutions) {
-        expect(solutions[0].subject).to.match(baseRegEx);
-        done();
-      });
-    });
-  });
-
-  it('should generate an @id for all blank nodes in a complex object', function(done) {
-    var tesla = helper.getFixture('tesla.json');
-
-    db.jsonld.put(tesla, { blank_ids: true }, function(err, obj) {
-      expect(obj['gr:hasPriceSpecification']['@id']).to.match(/^_\:/);
-      expect(obj['gr:includes']['@id']).to.match(/^_\:/);
-      done();
-    });
-  });
-
-  it('should generate an @id for all blank nodes in a @list object', function(done) {
-    var listdoc = helper.getFixture('list.json');
-
-    db.jsonld.put(listdoc, { blank_ids: true }, function(err, obj) {
-      expect(obj['https://example.org/list']['@list']).to.have.length(2)
-      obj['https://example.org/list']['@list'].forEach(function (e) {
-        expect(e['@id']).to.match(/^_:/)
-      })
-      db.jsonld.get(obj['@id'], {}, function (err, loaded) {
-        expect(loaded['https://example.org/list']['@list']).to.have.length(2)
-        done();
-      });
-    });
-  });
-
-  it('should pass the generated @id to callback', function(done) {
-    delete manu['@id'];
-    var baseString = 'http://levelgraph.org/tests/';
-    var baseRegEx = /^_\:/;
-
-    db.jsonld.put(manu, { base: baseString, blank_ids: true }, function(err, obj) {
-      expect(obj['@id']).to.match(baseRegEx);
-      done();
-    });
-  });
-
-  it('should convert @type into http://www.w3.org/1999/02/22-rdf-syntax-ns#type', function(done) {
-    db.jsonld.put(helper.getFixture('tesla.json'), function() {
-      db.get({
-        subject: 'http://example.org/cars/for-sale#tesla',
-        predicate: 'http://www.w3.org/1999/02/22-rdf-syntax-ns#type',
-        object: 'http://purl.org/goodrelations/v1#Offering'
-      }, function(err, triples) {
-        expect(triples).to.have.length(1);
-        done();
-      });
-    });
-  });
-
-  it('should update a property', function(done) {
-    db.jsonld.put(manu, function(err, instance) {
-      instance.homepage = 'http://another/website';
-      db.jsonld.put(instance, function() {
-        db.get({
-          subject: 'http://manu.sporny.org#person',
-          predicate: 'http://xmlns.com/foaf/0.1/homepage',
-          object: 'http://another/website'
-        }, function(err, triples) {
-          expect(triples).to.have.length(1);
-          done();
-        });
-      });
-    });
-  });
-
-  it('should add a property', function(done) {
-    db.jsonld.put(manu, function(err, instance) {
-      instance.age = 42;
-      instance['@context'].age = 'http://xmlns.com/foaf/0.1/age';
-
-      db.jsonld.put(instance, function() {
-        db.get({
-          subject: 'http://manu.sporny.org#person',
-          predicate: 'http://xmlns.com/foaf/0.1/age',
-          object: '"42"^^http://www.w3.org/2001/XMLSchema#integer'
-        }, function(err, triples) {
-          expect(triples).to.have.length(1);
-          done();
-        });
-      });
-    });
-  });
-
-  it('should delete a property', function(done) {
-    db.jsonld.put(manu, function(err, instance) {
-      delete instance.homepage
-
-      db.jsonld.put(instance, function() {
-        db.get({
-          subject: 'http://manu.sporny.org#person',
-          predicate: 'http://xmlns.com/foaf/0.1/homepage'
-        }, function(err, triples) {
-          expect(triples).to.have.length(1);
-          done();
-        });
-      });
-    });
-  });
-
-
-  it('should overwrite properties with the overwrite option', function(done) {
-    db.jsonld.put(manu, function(err, instance) {
-      delete instance.homepage
-
-      db.jsonld.put(instance, { overwrite: true }, function() {
-        db.get({
-          subject: 'http://manu.sporny.org#person',
-          predicate: 'http://xmlns.com/foaf/0.1/homepage'
-        }, function(err, triples) {
-          expect(triples).to.have.length(1);
-          done();
-        });
-      });
-    });
-  });
-
-  it('should delete a nested object', function(done) {
-    db.jsonld.put(helper.getFixture('tesla.json'), function(err, instance) {
-      delete instance['gr:hasPriceSpecification'];
-
-      db.jsonld.put(instance, function() {
-        db.get({
-          subject: 'http://example.org/cars/for-sale#tesla',
-          predicate: 'http://purl.org/goodrelations/v1#'
-        }, function(err, triples) {
-          expect(triples).to.be.empty;
-          done();
-        });
-      });
-    });
-  });
-
-  it('should receive error on invalid input', function(done) {
-    var invalid = {
-      "@context": { "@vocab": "http//example.com/" },
-      "test": { "@value": "foo", "bar": "oh yes" }
-    }
-    db.jsonld.put(invalid, function(err) {
-      expect(err && err.name).to.equal('jsonld.SyntaxError');
-      expect(err && err.message).to.equal('Invalid JSON-LD syntax; the value of "@vocab" in a @context must be an absolute IRI.');
-      done();
-    });
-  });
-
-  it('should manage mapped @id', function(done) {
-    var mapped_id = helper.getFixture('mapped_id.json')
-    db.jsonld.put(mapped_id, {preserve: true}, function(err, obj) {
-      expect(err && err.name).to.be.null;
-      db.get({}, function(err, triples) {
-        expect(triples).to.have.length(4);
-        done();
-      });
-    });
-  });
-
-  it('should insert graphs', function(done) {
-    var library = helper.getFixture('library.json');
-
-    db.jsonld.put(library, function() {
-      db.get({}, function(err, triples) {
-        expect(triples).to.have.length(9);
-        done();
-      });
-    });
-  });
-
-});
-
-describe('jsonld.put with default base and overwrite and cut option set to true (backward compatibility)', function() {
-
-  var db, manu;
-
-  beforeEach(function() {
-    db = helper.getDB({ jsonld: { base: 'http://levelgraph.io/ahah/', overwrite: true, cut: true } });
-    manu = helper.getFixture('manu.json');
-  });
-
-  afterEach(function(done) {
-    db.close(done);
-  });
-
-  it('should use it', function(done) {
-    manu['@id'] = '42'
-    db.jsonld.put(manu, function() {
-      db.get({
-        subject: 'http://levelgraph.io/ahah/42',
-        predicate: 'http://xmlns.com/foaf/0.1/name'
-      }, function(err, triples) {
-        expect(triples).to.have.length(1);
-        done();
-      });
-    });
-  });
-
-  it('should correctly generate blank nodes as subjects', function(done) {
-    var tesla = helper.getFixture('tesla.json');
-
-    db.jsonld.put(tesla, function() {
-      db.search([{
-        subject: 'http://example.org/cars/for-sale#tesla',
-        predicate: 'http://purl.org/goodrelations/v1#hasPriceSpecification',
-        object: db.v('bnode')
-      }, {
-        subject: db.v('bnode'),
-        predicate: 'http://purl.org/goodrelations/v1#hasCurrency',
-        object: '"USD"'
-      }], function(err, solutions) {
-        expect(solutions[0].bnode).to.exist;
-        done();
-      });
-    });
-  });
-
-  it('should not store undefined objects', function(done) {
-    var tesla = helper.getFixture('tesla.json');
-
-    db.jsonld.put(tesla, function() {
-      db.get({}, function(err, triples) {
-        triples.forEach(function(triple) {
-          expect(triple.object).to.exist;
-        });
-        done();
-      });
-    });
-  });
-
-  it('should support nested objects', function(done) {
-    var nested = helper.getFixture('nested.json');
-
-    db.jsonld.put(nested, function() {
-      db.get({}, function(err, triples) {
-        expect(triples).to.have.length(5);
-        done();
-      });
-    });
-  });
-
-  it('should break compatibility and not delete existing triples', function(done) {
-    var chapter = helper.getFixture('chapter.json');
-    var description = helper.getFixture('chapterdescription.json');
-
-    db.jsonld.put(chapter, function() {
-      db.jsonld.put(description, function() {
-        db.get({}, function(err, triples) {
-          expect(triples).to.have.length(3);
-          done();
-        });
-      });
-    });
-  });
-
-  it('should not delete existing facts with the cut option set to false', function(done) {
-    var chapter = helper.getFixture('chapter.json');
-    var description = helper.getFixture('chapterdescription.json');
-
-    db.jsonld.put(chapter, function() {
-      db.jsonld.put(description, { cut: false }, function() {
-        db.get({}, function(err, triples) {
-          expect(triples).to.have.length(3);
-          done();
-        });
-      });
-    });
-  });
-
-  it('should insert graphs', function(done) {
-    var library = helper.getFixture('library.json');
-
-    db.jsonld.put(library, function() {
-      db.get({}, function(err, triples) {
-        expect(triples).to.have.length(9);
-        done();
-      });
-    });
-  });
-
-});
-
-describe('jsonld.put with base', function() {
-
-  var db, manu;
-
-  beforeEach(function() {
-    db = helper.getDB({ jsonld: { base: 'http://levelgraph.io/ahah/' } });
-    manu = helper.getFixture('manu.json');
-  });
-
-  afterEach(function(done) {
-    db.close(done);
-  });
-
-
-  it('should accept a done callback', function(done) {
-    db.jsonld.put(manu, done);
-  });
-
-  it('should store a triple', function(done) {
-    db.jsonld.put(manu, function() {
-      db.get({
-        subject: 'http://manu.sporny.org#person',
-        predicate: 'http://xmlns.com/foaf/0.1/name'
-      }, function(err, triples) {
-        expect(triples).to.have.length(1);
-        done();
-      });
-    });
-  });
-
-  it('should store two triples', function(done) {
-    db.jsonld.put(manu, function() {
-      db.get({
-        subject: 'http://manu.sporny.org#person'
-      }, function(err, triples) {
-        expect(triples).to.have.length(2);
-        done();
-      });
-    });
-  });
-
-  it('should store a JSON file', function(done) {
-    db.jsonld.put(JSON.stringify(manu), function() {
-      db.get({
-        subject: 'http://manu.sporny.org#person'
-      }, function(err, triples) {
-        expect(triples).to.have.length(2);
-        done();
-      });
-    });
-  });
-
-  it('should support a base IRI', function(done) {
-    manu['@id'] = '42'
-    db.jsonld.put(manu, { base: 'http://levelgraph.org/tests/' }, function() {
-      db.get({
-        subject: 'http://levelgraph.org/tests/42',
-        predicate: 'http://xmlns.com/foaf/0.1/name'
-      }, function(err, triples) {
-        expect(triples).to.have.length(1);
-        done();
-      });
-    });
-  });
-
-  it('should generate an @id for unknown objects with the blank_ids option', function(done) {
-    delete manu['@id'];
-    var baseString = 'http://levelgraph.org/tests/';
-    var baseRegEx = /^_\:/;
-
-    db.jsonld.put(manu, { base: baseString, blank_ids: true }, function() {
-      db.search({
-        subject: db.v('subject'),
-        predicate: 'http://xmlns.com/foaf/0.1/name'
-      }, function(err, solutions) {
-        expect(solutions[0].subject).to.match(baseRegEx);
-        done();
-      });
-    });
-  });
-
-  it('should pass the generated @id to callback with the blank_ids option', function(done) {
-    delete manu['@id'];
-    var baseString = 'http://levelgraph.org/tests/';
-    var baseRegEx = /^_\:/;
-
-    db.jsonld.put(manu, { base: baseString, blank_ids: true }, function(err, obj) {
-      expect(obj['@id']).to.match(baseRegEx);
-      done();
-    });
-  });
-
-  it('should convert @type into http://www.w3.org/1999/02/22-rdf-syntax-ns#type', function(done) {
-    db.jsonld.put(helper.getFixture('tesla.json'), function() {
-      db.get({
-        subject: 'http://example.org/cars/for-sale#tesla',
-        predicate: 'http://www.w3.org/1999/02/22-rdf-syntax-ns#type',
-        object: 'http://purl.org/goodrelations/v1#Offering'
-      }, function(err, triples) {
-        expect(triples).to.have.length(1);
-        done();
-      });
-    });
-  });
-
-  it('should update a property', function(done) {
-    db.jsonld.put(manu, function(err, instance) {
-      instance.homepage = 'http://another/website';
-      db.jsonld.put(instance, function() {
-        db.get({
-          subject: 'http://manu.sporny.org#person',
-          predicate: 'http://xmlns.com/foaf/0.1/homepage',
-          object: 'http://another/website'
-        }, function(err, triples) {
-          expect(triples).to.have.length(1);
-          done();
-        });
-      });
-    });
-  });
-
-  it('should add a property', function(done) {
-    db.jsonld.put(manu, function(err, instance) {
-      instance.age = 42;
-      instance['@context'].age = 'http://xmlns.com/foaf/0.1/age';
-
-      db.jsonld.put(instance, function() {
-        db.get({
-          subject: 'http://manu.sporny.org#person',
-          predicate: 'http://xmlns.com/foaf/0.1/age',
-          object: '"42"^^http://www.w3.org/2001/XMLSchema#integer'
-        }, function(err, triples) {
-          expect(triples).to.have.length(1);
-          done();
-        });
-      });
-    });
-  });
-
-  it('should delete a property but preserve existing ones', function(done) {
-    db.jsonld.put(manu, function(err, instance) {
-      delete instance.homepage
-
-      db.jsonld.put(instance, function() {
-        db.get({
-          subject: 'http://manu.sporny.org#person',
-          predicate: 'http://xmlns.com/foaf/0.1/homepage'
-        }, function(err, triples) {
-          expect(triples).to.have.length(1);
-          done();
-        });
-      });
-    });
-  });
-
-
-  it('should preserve properties with the preserve option', function(done) {
-    db.jsonld.put(manu, function(err, instance) {
-      delete instance.homepage
-
-      db.jsonld.put(instance, { preserve: true }, function() {
-        db.get({
-          subject: 'http://manu.sporny.org#person',
-          predicate: 'http://xmlns.com/foaf/0.1/homepage'
-        }, function(err, triples) {
-          expect(triples).to.have.length(1);
-          done();
-        });
-      });
-    });
-  });
-
-
-  it('should use the base option', function(done) {
-    manu['@id'] = '42'
-    db.jsonld.put(manu, function() {
-      db.get({
-        subject: 'http://levelgraph.io/ahah/42',
-        predicate: 'http://xmlns.com/foaf/0.1/name'
-      }, function(err, triples) {
-        expect(triples).to.have.length(1);
-        done();
-      });
-    });
-  });
-
-  it('should correctly generate blank nodes as subjects', function(done) {
-    var tesla = helper.getFixture('tesla.json');
-
-    db.jsonld.put(tesla, function() {
-      db.search([{
-        subject: 'http://example.org/cars/for-sale#tesla',
-        predicate: 'http://purl.org/goodrelations/v1#hasPriceSpecification',
-        object: db.v('bnode')
-      }, {
-        subject: db.v('bnode'),
-        predicate: 'http://purl.org/goodrelations/v1#hasCurrency',
-        object: '"USD"'
-      }], function(err, solutions) {
-        expect(solutions[0].bnode).to.exist;
-        done();
-      });
-    });
-  });
-
-  it('should not store undefined objects', function(done) {
-    var tesla = helper.getFixture('tesla.json');
-
-    db.jsonld.put(tesla, function() {
-      db.get({}, function(err, triples) {
-        triples.forEach(function(triple) {
-          expect(triple.object).to.exist;
-        });
-        done();
-      });
-    });
-  });
-
-
-  it('should delete a nested object', function(done) {
-    db.jsonld.put(helper.getFixture('tesla.json'), function(err, instance) {
-      delete instance['gr:hasPriceSpecification'];
-
-      db.jsonld.put(instance, function() {
-        db.get({
-          subject: 'http://example.org/cars/for-sale#tesla',
-          predicate: 'http://purl.org/goodrelations/v1#'
-        }, function(err, triples) {
-          expect(triples).to.be.empty;
-          done();
-        });
-      });
-    });
-  });
-
-  it('should receive error on invalid input', function(done) {
-    var invalid = {
-      "@context": { "@vocab": "http//example.com/" },
-      "test": { "@value": "foo", "bar": "oh yes" }
-    }
-    db.jsonld.put(invalid, function(err) {
-      expect(err && err.name).to.equal('jsonld.SyntaxError');
-      expect(err && err.message).to.equal('Invalid JSON-LD syntax; the value of "@vocab" in a @context must be an absolute IRI.');
-      done();
-    });
-  });
-
-  it('should not overwrite existing facts', function(done) {
-    var chapter = helper.getFixture('chapter.json');
-    var description = helper.getFixture('chapterdescription.json');
-
-    db.jsonld.put(chapter, function() {
-      db.jsonld.put(description, function() {
-        db.get({}, function(err, triples) {
-          expect(triples).to.have.length(3);
-          done();
-        });
-      });
-    });
-  });
-
-  it('should insert graphs', function(done) {
-    var library = helper.getFixture('library.json');
-
-    db.jsonld.put(library, function() {
-      db.get({}, function(err, triples) {
-        expect(triples).to.have.length(9);
-        done();
-      });
-    });
-  });
-
-  describe('jsonld.put with overwrite and cut set to true (backward compatibility)', function() {
-
-    var db, manu;
-
-    beforeEach(function() {
-      db = helper.getDB({ jsonld: { overwrite: false, cut: true } });
-      manu = helper.getFixture('manu.json');
-    });
-
-    afterEach(function(done) {
-      db.close(done);
-    });
-
-    it('should accept a done callback', function(done) {
-      db.jsonld.put(manu, done);
-    });
-
-    it('should store a triple', function(done) {
-      db.jsonld.put(manu, function() {
-        db.get({
-          subject: 'http://manu.sporny.org#person',
-          predicate: 'http://xmlns.com/foaf/0.1/name'
-        }, function(err, triples) {
-          expect(triples).to.have.length(1);
-          done();
-        });
-      });
-    });
-
-    it('should store two triples', function(done) {
-      db.jsonld.put(manu, function() {
-        db.get({
-          subject: 'http://manu.sporny.org#person'
-        }, function(err, triples) {
-          expect(triples).to.have.length(2);
-          done();
-        });
-      });
-    });
-
-    it('should store a JSON file', function(done) {
-      db.jsonld.put(JSON.stringify(manu), function() {
-        db.get({
-          subject: 'http://manu.sporny.org#person'
-        }, function(err, triples) {
-          expect(triples).to.have.length(2);
-          done();
-        });
-      });
-    });
-
-    it('should support a base IRI', function(done) {
-      manu['@id'] = '42'
-      db.jsonld.put(manu, { base: 'http://levelgraph.org/tests/' }, function() {
-        db.get({
-          subject: 'http://levelgraph.org/tests/42',
-          predicate: 'http://xmlns.com/foaf/0.1/name'
-        }, function(err, triples) {
-          expect(triples).to.have.length(1);
-          done();
-        });
-      });
-    });
-
-    it('should generate an @id for unknown objects', function(done) {
-      delete manu['@id'];
-      var baseString = 'http://levelgraph.org/tests/';
-      var baseRegEx = /^_\:/;
-
-      db.jsonld.put(manu, { base: baseString, blank_ids: true  }, function() {
-        db.search({
-          subject: db.v('subject'),
-          predicate: 'http://xmlns.com/foaf/0.1/name'
-        }, function(err, solutions) {
-          expect(solutions[0].subject).to.match(baseRegEx);
-          done();
-        });
-      });
-    });
-
-    it('should generate an @id for all blank nodes in a complex object', function(done) {
-      var tesla = helper.getFixture('tesla.json');
-
-      db.jsonld.put(tesla, { blank_ids: true }, function(err, obj) {
-        expect(obj['gr:hasPriceSpecification']['@id']).to.match(/^_\:/);
-        expect(obj['gr:includes']['@id']).to.match(/^_\:/);
-        done();
-      });
-    });
-
-    it('should pass the generated @id to callback', function(done) {
-      delete manu['@id'];
-      var baseString = 'http://levelgraph.org/tests/';
-      var baseRegEx = /^_\:/;
-
-      db.jsonld.put(manu, { base: baseString, blank_ids: true  }, function(err, obj) {
-        expect(obj['@id']).to.match(baseRegEx);
-        done();
-      });
-    });
-
-    it('should convert @type into http://www.w3.org/1999/02/22-rdf-syntax-ns#type', function(done) {
-      db.jsonld.put(helper.getFixture('tesla.json'), function() {
-        db.get({
-          subject: 'http://example.org/cars/for-sale#tesla',
-          predicate: 'http://www.w3.org/1999/02/22-rdf-syntax-ns#type',
-          object: 'http://purl.org/goodrelations/v1#Offering'
-        }, function(err, triples) {
-          expect(triples).to.have.length(1);
-          done();
-        });
-      });
-    });
-
-    it('should update a property', function(done) {
-      db.jsonld.put(manu, function(err, instance) {
-        instance.homepage = 'http://another/website';
-        db.jsonld.put(instance, function() {
-          db.get({
-            subject: 'http://manu.sporny.org#person',
-            predicate: 'http://xmlns.com/foaf/0.1/homepage',
-            object: 'http://another/website'
-          }, function(err, triples) {
-            expect(triples).to.have.length(1);
-            done();
-          });
-        });
-      });
-    });
-
-    it('should add a property', function(done) {
-      db.jsonld.put(manu, function(err, instance) {
-        instance.age = 42;
-        instance['@context'].age = 'http://xmlns.com/foaf/0.1/age';
-
-        db.jsonld.put(instance, function() {
-          db.get({
-            subject: 'http://manu.sporny.org#person',
-            predicate: 'http://xmlns.com/foaf/0.1/age',
-            object: '"42"^^http://www.w3.org/2001/XMLSchema#integer'
-          }, function(err, triples) {
-            expect(triples).to.have.length(1);
-            done();
-          });
-        });
-      });
-    });
-
-    it('should break compatibility and keep an existing property', function(done) {
-      db.jsonld.put(manu, function(err, instance) {
-        delete instance.homepage
-
-        db.jsonld.put(instance, function() {
-          db.get({
-            subject: 'http://manu.sporny.org#person',
-            predicate: 'http://xmlns.com/foaf/0.1/homepage'
-          }, function(err, triples) {
-            expect(triples).to.have.length(1);
-            done();
-          });
-        });
-      });
-    });
-
-
-    it('should preserve properties with the overwrite option set to false', function(done) {
-      db.jsonld.put(manu, function(err, instance) {
-        delete instance.homepage
-
-        db.jsonld.put(instance, { overwrite: false }, function() {
-          db.get({
-            subject: 'http://manu.sporny.org#person',
-            predicate: 'http://xmlns.com/foaf/0.1/homepage'
-          }, function(err, triples) {
-            expect(triples).to.have.length(1);
-            done();
-          });
-        });
-      });
-    });
-
-    it('should delete a nested object', function(done) {
-      db.jsonld.put(helper.getFixture('tesla.json'), function(err, instance) {
-        delete instance['gr:hasPriceSpecification'];
-
-        db.jsonld.put(instance, function() {
-          db.get({
-            subject: 'http://example.org/cars/for-sale#tesla',
-            predicate: 'http://purl.org/goodrelations/v1#'
-          }, function(err, triples) {
-            expect(triples).to.be.empty;
-            done();
-          });
-        });
-      });
-    });
-
-    it('should receive error on invalid input', function(done) {
-      var invalid = {
-        "@context": { "@vocab": "http//example.com/" },
-        "test": { "@value": "foo", "bar": "oh yes" }
-      }
-      db.jsonld.put(invalid, function(err) {
-        expect(err && err.name).to.equal('jsonld.SyntaxError');
-        expect(err && err.message).to.equal('Invalid JSON-LD syntax; the value of "@vocab" in a @context must be an absolute IRI.');
-        done();
-      });
-    });
-
-    it('should manage mapped @id', function(done) {
-      var mapped_id = helper.getFixture('mapped_id.json')
-      db.jsonld.put(mapped_id, {preserve: true}, function(err) {
-        expect(err && err.name).to.be.null;
-        db.jsonld.get(mapped_id["id"], { "@context": mapped_id["@context"]}, function(err, obj) {
-          db.get({}, function(err, triples) {
-            expect(triples).to.have.length(4);
-            done();
-          });
-        });
-      });
-    });
-
-    it('should insert graphs', function(done) {
-      var library = helper.getFixture('library.json');
-
-      db.jsonld.put(library, function() {
-        db.get({}, function(err, triples) {
-          expect(triples).to.have.length(9);
-          done();
-        });
-      });
-    });
-
-  });
-
-});
+// https://github.com/Level/level/blob/master/test.js
+'use strict'
+
+const test = require('tape')
+const { v4: uuid } = require('uuid')
+const { Level } = require('level')
+
+// Because we directly export classic-level or browser-level
+// without wrapping them, there's no need for further tests here.
+test('smoke test', async function (t) {
+  const db = new Level('db/' + uuid())
+  await db.put('abc', '123')
+  t.is(await db.get('abc'), '123')
+  return db.close()
+})
\ No newline at end of file
diff --git a/test1/cut_spec.js b/test1/cut_spec.js
new file mode 100644
index 0000000..39161ca
--- /dev/null
+++ b/test1/cut_spec.js
@@ -0,0 +1,137 @@
+var expect = require("chai").expect;
+var helper = require("./helper");
+
+describe("jsonld.cut", function () {
+  var db, manu, tesla;
+
+  beforeEach(function () {
+    db = helper.getDB({ jsonld: { base: "http://levelgraph.io/" } });
+    manu = helper.getFixture("manu.json");
+    tesla = helper.getFixture("tesla.json");
+    console.log(db);
+    console.log(manu);
+    console.log(tesla);
+  });
+
+  afterEach(function (done) {
+    db.close(done);
+  });
+
+  it("should accept a done callback", function (done) {
+    db.jsonld.cut(manu, done);
+  });
+
+  it("should cut a basic object", function (done) {
+    db.jsonld.put(manu, function () {
+      db.jsonld.cut(manu, function () {
+        db.get({}, function (err, triples) {
+          // getting the full db
+          expect(triples).to.be.empty;
+          done();
+        });
+      });
+    });
+  });
+
+  it("should cut nothing", function (done) {
+    db.jsonld.put(manu, function () {
+      db.jsonld.cut({}, function () {
+        db.get({}, function (err, triples) {
+          // getting the full db
+          expect(triples).to.have.length(2);
+          done();
+        });
+      });
+    });
+  });
+
+  it("should cut a complex object", function (done) {
+    db.jsonld.put(tesla, function () {
+      db.jsonld.cut(tesla, function () {
+        db.get({}, function (err, triples) {
+          // getting the full db
+          expect(triples).to.have.length(0);
+          done();
+        });
+      });
+    });
+  });
+
+  it("should del an iri with the cut option", function (done) {
+    db.jsonld.put(manu, function () {
+      db.jsonld.del(manu["@id"], function (err) {
+        expect(err && err.message).to.equal(
+          "Passing an IRI to del is not supported anymore. Please pass a JSON-LD document."
+        );
+        db.get({}, function (err, triples) {
+          // getting the full db
+          expect(triples).to.have.length(2);
+          done();
+        });
+      });
+    });
+  });
+
+  it("should del a single object leaving blank nodes", function (done) {
+    db.jsonld.put(manu, function () {
+      db.jsonld.put(tesla, function () {
+        db.jsonld.del(tesla, function () {
+          db.get({}, function (err, triples) {
+            // getting the full db
+            expect(triples).to.have.length(10); // 2 triples from Manu and 8 from tesla blanks.
+            done();
+          });
+        });
+      });
+    });
+  });
+
+  it("should del a single object with the cut option leaving blank nodes", function (done) {
+    // This should also be deprecated in favor of using a `cut` option or the `cut` function.
+    db.jsonld.put(manu, function () {
+      db.jsonld.put(tesla, function () {
+        db.jsonld.del(tesla, { cut: true }, function () {
+          db.get({}, function (err, triples) {
+            // getting the full db
+            expect(triples).to.have.length(2); // 2 triples from Manu.
+            done();
+          });
+        });
+      });
+    });
+  });
+
+  it("should del a single object with no blank nodes completely", function (done) {
+    var library = helper.getFixture("library_framed.json");
+
+    db.jsonld.put(manu, function () {
+      db.jsonld.put(library, function () {
+        db.jsonld.del(library, function () {
+          db.get({}, function (err, triples) {
+            // getting the full db
+            expect(triples).to.have.length(2);
+            done();
+          });
+        });
+      });
+    });
+  });
+
+  it("should del obj passed as stringified JSON", function (done) {
+    var jld = {
+      "@context": { "@vocab": "https://schema.org/" },
+      name: "BigBlueHat",
+    };
+
+    db.jsonld.put(JSON.stringify(jld), function () {
+      db.jsonld.del(JSON.stringify(jld), function (err) {
+        expect(err).to.not.exist;
+        db.get({}, function (err, triples) {
+          // getting the full db
+          expect(triples).to.have.length(1);
+          done();
+        });
+      });
+    });
+  });
+});
diff --git a/test/datatype_spec.js b/test1/datatype_spec.js
similarity index 100%
rename from test/datatype_spec.js
rename to test1/datatype_spec.js
diff --git a/test/del_spec.js b/test1/del_spec.js
similarity index 100%
rename from test/del_spec.js
rename to test1/del_spec.js
diff --git a/test/fixture/ratatat.json b/test1/fixture/ratatat.json
similarity index 100%
rename from test/fixture/ratatat.json
rename to test1/fixture/ratatat.json
diff --git a/test/get_spec.js b/test1/get_spec.js
similarity index 100%
rename from test/get_spec.js
rename to test1/get_spec.js
diff --git a/test/helper.js b/test1/helper.js
similarity index 100%
rename from test/helper.js
rename to test1/helper.js
diff --git a/test1/helper_persist.js b/test1/helper_persist.js
new file mode 100644
index 0000000..7274a01
--- /dev/null
+++ b/test1/helper_persist.js
@@ -0,0 +1,464 @@
+var fs = require("fs");
+const { Level } = require("level"),
+  yourDB = new Level("./yourtestdb"),
+  graph = require("levelgraph"),
+  jsonld = require("../"),
+  _ = require("lodash");
+
+var getDB = function (opts) {
+  opts = _.assign({ jsonld: {} }, opts);
+  return jsonld(graph(yourDB), opts.jsonld);
+};
+
+var getFixture = function (name) {
+  var fixtures = {
+    "bigbuckbunny.json": {
+      "@context": {
+        "@vocab": "http://schema.org/",
+      },
+      "@id": "http://www.bigbuckbunny.org/",
+      name: "Big Buck Bunny",
+    },
+    "john.json": {
+      "@context": "http://json-ld.org/contexts/person.jsonld",
+      "@id": "http://dbpedia.org/resource/John_Lennon",
+      name: "John Lennon",
+      born: "1940-10-09",
+      spouse: "http://dbpedia.org/resource/Cynthia_Lennon",
+    },
+    "manu.json": {
+      "@context": {
+        "@vocab": "http://xmlns.com/foaf/0.1/",
+        homepage: { "@type": "@id" },
+      },
+      "@id": "http://manu.sporny.org#person",
+      name: "Manu Sporny",
+      homepage: "http://manu.sporny.org/",
+    },
+    "nested.json": {
+      "@context": {
+        name: "http://xmlns.com/foaf/0.1/name",
+        knows: "http://xmlns.com/foaf/0.1/knows",
+      },
+      "@id": "http://matteocollina.com",
+      name: "matteo",
+      knows: [
+        {
+          name: "daniele",
+        },
+        {
+          name: "lucio",
+        },
+      ],
+    },
+    "person.json": {
+      "@context": {
+        Person: "http://xmlns.com/foaf/0.1/Person",
+        xsd: "http://www.w3.org/2001/XMLSchema#",
+        name: "http://xmlns.com/foaf/0.1/name",
+        nickname: "http://xmlns.com/foaf/0.1/nick",
+        affiliation: "http://schema.org/affiliation",
+        depiction: {
+          "@id": "http://xmlns.com/foaf/0.1/depiction",
+          "@type": "@id",
+        },
+        image: {
+          "@id": "http://xmlns.com/foaf/0.1/img",
+          "@type": "@id",
+        },
+        born: {
+          "@id": "http://schema.org/birthDate",
+          "@type": "xsd:dateTime",
+        },
+        child: {
+          "@id": "http://schema.org/children",
+          "@type": "@id",
+        },
+        colleague: {
+          "@id": "http://schema.org/colleagues",
+          "@type": "@id",
+        },
+        knows: {
+          "@id": "http://xmlns.com/foaf/0.1/knows",
+          "@type": "@id",
+        },
+        died: {
+          "@id": "http://schema.org/deathDate",
+          "@type": "xsd:dateTime",
+        },
+        email: {
+          "@id": "http://xmlns.com/foaf/0.1/mbox",
+          "@type": "@id",
+        },
+        familyName: "http://xmlns.com/foaf/0.1/familyName",
+        givenName: "http://xmlns.com/foaf/0.1/givenName",
+        gender: "http://schema.org/gender",
+        homepage: {
+          "@id": "http://xmlns.com/foaf/0.1/homepage",
+          "@type": "@id",
+        },
+        honorificPrefix: "http://schema.org/honorificPrefix",
+        honorificSuffix: "http://schema.org/honorificSuffix",
+        jobTitle: "http://xmlns.com/foaf/0.1/title",
+        nationality: "http://schema.org/nationality",
+        parent: {
+          "@id": "http://schema.org/parent",
+          "@type": "@id",
+        },
+        sibling: {
+          "@id": "http://schema.org/sibling",
+          "@type": "@id",
+        },
+        spouse: {
+          "@id": "http://schema.org/spouse",
+          "@type": "@id",
+        },
+        telephone: "http://schema.org/telephone",
+        Address: "http://www.w3.org/2006/vcard/ns#Address",
+        address: "http://www.w3.org/2006/vcard/ns#address",
+        street: "http://www.w3.org/2006/vcard/ns#street-address",
+        locality: "http://www.w3.org/2006/vcard/ns#locality",
+        region: "http://www.w3.org/2006/vcard/ns#region",
+        country: "http://www.w3.org/2006/vcard/ns#country",
+        postalCode: "http://www.w3.org/2006/vcard/ns#postal-code",
+      },
+    },
+    "tesla.json": {
+      "@context": {
+        gr: "http://purl.org/goodrelations/v1#",
+        pto: "http://www.productontology.org/id/",
+        foaf: "http://xmlns.com/foaf/0.1/",
+        xsd: "http://www.w3.org/2001/XMLSchema#",
+        "foaf:page": {
+          "@type": "@id",
+        },
+        "gr:acceptedPaymentMethods": {
+          "@type": "@id",
+        },
+        "gr:hasBusinessFunction": {
+          "@type": "@id",
+        },
+      },
+      "@id": "http://example.org/cars/for-sale#tesla",
+      "@type": "gr:Offering",
+      "gr:name": "Used Tesla Roadster",
+      "gr:description": "Need to sell fast and furiously",
+      "gr:hasBusinessFunction": "gr:Sell",
+      "gr:acceptedPaymentMethods": "gr:Cash",
+      "gr:hasPriceSpecification": {
+        "gr:hasCurrencyValue": "85000",
+        "gr:hasCurrency": "USD",
+      },
+      "gr:includes": {
+        "@type": ["gr:Individual", "pto:Vehicle"],
+        "gr:name": "Tesla Roadster",
+        "foaf:page": "http://www.teslamotors.com/roadster",
+      },
+    },
+    "ratatat.json": {
+      "@id": "http://dbpedia.org/resource/Ratatat",
+      "@type": [
+        "http://dbpedia.org/class/yago/Measure100033615",
+        "http://dbpedia.org/ontology/Band",
+        "http://dbpedia.org/ontology/Agent",
+        "http://dbpedia.org/class/yago/Digit113741022",
+        "http://dbpedia.org/ontology/Organisation",
+        "http://dbpedia.org/class/yago/AmericanHouseMusicGroups",
+        "http://dbpedia.org/class/yago/Onomatopoeia107104574",
+        "http://dbpedia.org/class/yago/Number113582013",
+        "http://dbpedia.org/class/yago/Couple113743605",
+        "http://dbpedia.org/class/yago/Two113743269",
+        "http://schema.org/Organization",
+        "http://dbpedia.org/class/yago/DefiniteQuantity113576101",
+        "http://dbpedia.org/class/yago/Integer113728499",
+        "http://dbpedia.org/class/yago/ExpressiveStyle107066659",
+        "http://schema.org/MusicGroup",
+        "http://dbpedia.org/class/yago/Group100031264",
+        "http://www.w3.org/2002/07/owl#Thing",
+        "http://dbpedia.org/class/yago/AmericanPost-rockGroups",
+        "http://dbpedia.org/class/yago/Communication100033020",
+        "http://dbpedia.org/class/yago/ElectronicMusicGroupsFromNewYork",
+        "http://dbpedia.org/class/yago/ElectronicMusicDuos",
+        "http://dbpedia.org/class/yago/Onomatopoeias",
+        "http://dbpedia.org/class/yago/Abstraction100002137",
+        "http://dbpedia.org/class/yago/Device107068844",
+        "http://dbpedia.org/class/yago/RhetoricalDevice107098193",
+      ],
+    },
+    "chapter.json": {
+      "@context": {
+        dc: "http://purl.org/dc/elements/1.1/",
+        ex: "http://example.org/vocab#",
+      },
+      "@id": "http://example.org/library/the-republic#introduction",
+      "@type": "ex:Chapter",
+      "dc:title": "The Introduction",
+    },
+    "chapterdescription.json": {
+      "@context": {
+        dc: "http://purl.org/dc/elements/1.1/",
+        ex: "http://example.org/vocab#",
+      },
+      "@id": "http://example.org/library/the-republic#introduction",
+      "dc:description": "An introductory chapter on The Republic.",
+    },
+    "library_framed.json": {
+      "@context": {
+        dc: "http://purl.org/dc/elements/1.1/",
+        ex: "http://example.org/vocab#",
+        xsd: "http://www.w3.org/2001/XMLSchema#",
+        "ex:contains": {
+          "@type": "@id",
+        },
+      },
+      "@id": "http://example.org/library",
+      "@type": "ex:Library",
+      "ex:contains": {
+        "@id": "http://example.org/library/the-republic",
+        "@type": "ex:Book",
+        "ex:contains": {
+          "@id": "http://example.org/library/the-republic#introduction",
+          "@type": "ex:Chapter",
+          "dc:description": "An introductory chapter on The Republic.",
+          "dc:title": "The Introduction",
+        },
+        "dc:creator": "Plato",
+        "dc:title": "The Republic",
+      },
+    },
+    "library.json": {
+      "@context": {
+        dc: "http://purl.org/dc/elements/1.1/",
+        ex: "http://example.org/vocab#",
+        xsd: "http://www.w3.org/2001/XMLSchema#",
+        "ex:contains": {
+          "@type": "@id",
+        },
+      },
+      "@graph": [
+        {
+          "@id": "http://example.org/library",
+          "@type": "ex:Library",
+          "ex:contains": "http://example.org/library/the-republic",
+        },
+        {
+          "@id": "http://example.org/library/the-republic",
+          "@type": "ex:Book",
+          "dc:creator": "Plato",
+          "dc:title": "The Republic",
+          "ex:contains": "http://example.org/library/the-republic#introduction",
+        },
+        {
+          "@id": "http://example.org/library/the-republic#introduction",
+          "@type": "ex:Chapter",
+          "dc:description": "An introductory chapter on The Republic.",
+          "dc:title": "The Introduction",
+        },
+      ],
+    },
+    "mapped_id.json": {
+      "@context": {
+        id: "@id",
+        "@vocab": "http://xmlns.com/foaf/0.1/",
+      },
+      id: "http://bigbluehat.com/#",
+      name: "BigBlueHat",
+      knows: [
+        {
+          id: "http://manu.sporny.org#person",
+          name: "Manu Sporny",
+          homepage: "http://manu.sporny.org/",
+        },
+      ],
+    },
+    "annotation_remote.json": {
+      "@context": "http://www.w3.org/ns/anno.jsonld",
+      id: "http://example.org/anno9",
+      type: "Annotation",
+      body: [
+        "http://example.org/description1",
+        {
+          type: "TextualBody",
+          value: "tag1",
+        },
+      ],
+      target: [
+        "http://example.org/image1",
+        "http://example.org/image2",
+        {
+          source: "http://example.org/",
+        },
+      ],
+    },
+    "list.json": {
+      "@id": "https://example.org/doc",
+      "https://example.org/list": {
+        "@list": [
+          { "https://example.org/item": "one" },
+          { "https://example.org/item": "two" },
+        ],
+      },
+    },
+    "listcontext.json": {
+      "@id": "https://example.org/doc",
+      "@context": {
+        "https://example.org/list": { "@container": "@list" },
+      },
+      "https://example.org/list": [
+        { "https://example.org/item": "one" },
+        { "https://example.org/item": "two" },
+      ],
+    },
+    "annotation.json": {
+      "@context": {
+        oa: "http://www.w3.org/ns/oa#",
+        dc: "http://purl.org/dc/elements/1.1/",
+        dcterms: "http://purl.org/dc/terms/",
+        dctypes: "http://purl.org/dc/dcmitype/",
+        foaf: "http://xmlns.com/foaf/0.1/",
+        rdf: "http://www.w3.org/1999/02/22-rdf-syntax-ns#",
+        rdfs: "http://www.w3.org/2000/01/rdf-schema#",
+        skos: "http://www.w3.org/2004/02/skos/core#",
+        xsd: "http://www.w3.org/2001/XMLSchema#",
+        iana: "http://www.iana.org/assignments/relation/",
+        owl: "http://www.w3.org/2002/07/owl#",
+        as: "http://www.w3.org/ns/activitystreams#",
+        schema: "http://schema.org/",
+
+        id: { "@type": "@id", "@id": "@id" },
+        type: { "@type": "@id", "@id": "@type" },
+
+        Annotation: "oa:Annotation",
+        Dataset: "dctypes:Dataset",
+        Image: "dctypes:StillImage",
+        Video: "dctypes:MovingImage",
+        Audio: "dctypes:Sound",
+        Text: "dctypes:Text",
+        TextualBody: "oa:TextualBody",
+        ResourceSelection: "oa:ResourceSelection",
+        SpecificResource: "oa:SpecificResource",
+        FragmentSelector: "oa:FragmentSelector",
+        CssSelector: "oa:CssSelector",
+        XPathSelector: "oa:XPathSelector",
+        TextQuoteSelector: "oa:TextQuoteSelector",
+        TextPositionSelector: "oa:TextPositionSelector",
+        DataPositionSelector: "oa:DataPositionSelector",
+        SvgSelector: "oa:SvgSelector",
+        RangeSelector: "oa:RangeSelector",
+        TimeState: "oa:TimeState",
+        HttpRequestState: "oa:HttpRequestState",
+        CssStylesheet: "oa:CssStyle",
+        Choice: "oa:Choice",
+        Person: "foaf:Person",
+        Software: "as:Application",
+        Organization: "foaf:Organization",
+        AnnotationCollection: "as:OrderedCollection",
+        AnnotationPage: "as:OrderedCollectionPage",
+        Audience: "schema:Audience",
+
+        Motivation: "oa:Motivation",
+        bookmarking: "oa:bookmarking",
+        classifying: "oa:classifying",
+        commenting: "oa:commenting",
+        describing: "oa:describing",
+        editing: "oa:editing",
+        highlighting: "oa:highlighting",
+        identifying: "oa:identifying",
+        linking: "oa:linking",
+        moderating: "oa:moderating",
+        questioning: "oa:questioning",
+        replying: "oa:replying",
+        reviewing: "oa:reviewing",
+        tagging: "oa:tagging",
+
+        auto: "oa:autoDirection",
+        ltr: "oa:ltrDirection",
+        rtl: "oa:rtlDirection",
+
+        body: { "@type": "@id", "@id": "oa:hasBody" },
+        target: { "@type": "@id", "@id": "oa:hasTarget" },
+        source: { "@type": "@id", "@id": "oa:hasSource" },
+        selector: { "@type": "@id", "@id": "oa:hasSelector" },
+        state: { "@type": "@id", "@id": "oa:hasState" },
+        scope: { "@type": "@id", "@id": "oa:hasScope" },
+        refinedBy: { "@type": "@id", "@id": "oa:refinedBy" },
+        startSelector: { "@type": "@id", "@id": "oa:hasStartSelector" },
+        endSelector: { "@type": "@id", "@id": "oa:hasEndSelector" },
+        renderedVia: { "@type": "@id", "@id": "oa:renderedVia" },
+        creator: { "@type": "@id", "@id": "dcterms:creator" },
+        generator: { "@type": "@id", "@id": "as:generator" },
+        rights: { "@type": "@id", "@id": "dcterms:rights" },
+        homepage: { "@type": "@id", "@id": "foaf:homepage" },
+        via: { "@type": "@id", "@id": "oa:via" },
+        canonical: { "@type": "@id", "@id": "oa:canonical" },
+        stylesheet: { "@type": "@id", "@id": "oa:styledBy" },
+        cached: { "@type": "@id", "@id": "oa:cachedSource" },
+        conformsTo: { "@type": "@id", "@id": "dcterms:conformsTo" },
+        items: { "@type": "@id", "@id": "as:items", "@container": "@list" },
+        partOf: { "@type": "@id", "@id": "as:partOf" },
+        first: { "@type": "@id", "@id": "as:first" },
+        last: { "@type": "@id", "@id": "as:last" },
+        next: { "@type": "@id", "@id": "as:next" },
+        prev: { "@type": "@id", "@id": "as:prev" },
+        audience: { "@type": "@id", "@id": "schema:audience" },
+        motivation: { "@type": "@vocab", "@id": "oa:motivatedBy" },
+        purpose: { "@type": "@vocab", "@id": "oa:hasPurpose" },
+        textDirection: { "@type": "@vocab", "@id": "oa:textDirection" },
+
+        accessibility: "schema:accessibilityFeature",
+        bodyValue: "oa:bodyValue",
+        format: "dc:format",
+        language: "dc:language",
+        processingLanguage: "oa:processingLanguage",
+        value: "rdf:value",
+        exact: "oa:exact",
+        prefix: "oa:prefix",
+        suffix: "oa:suffix",
+        styleClass: "oa:styleClass",
+        name: "foaf:name",
+        email: "foaf:mbox",
+        email_sha1: "foaf:mbox_sha1sum",
+        nickname: "foaf:nick",
+        label: "rdfs:label",
+
+        created: { "@id": "dcterms:created", "@type": "xsd:dateTime" },
+        modified: { "@id": "dcterms:modified", "@type": "xsd:dateTime" },
+        generated: { "@id": "dcterms:issued", "@type": "xsd:dateTime" },
+        sourceDate: { "@id": "oa:sourceDate", "@type": "xsd:dateTime" },
+        sourceDateStart: {
+          "@id": "oa:sourceDateStart",
+          "@type": "xsd:dateTime",
+        },
+        sourceDateEnd: { "@id": "oa:sourceDateEnd", "@type": "xsd:dateTime" },
+
+        start: { "@id": "oa:start", "@type": "xsd:nonNegativeInteger" },
+        end: { "@id": "oa:end", "@type": "xsd:nonNegativeInteger" },
+        total: { "@id": "as:totalItems", "@type": "xsd:nonNegativeInteger" },
+        startIndex: {
+          "@id": "as:startIndex",
+          "@type": "xsd:nonNegativeInteger",
+        },
+      },
+      id: "http://example.org/anno9",
+      type: "Annotation",
+      body: [
+        "http://example.org/description1",
+        {
+          type: "TextualBody",
+          value: "tag1",
+        },
+      ],
+      target: [
+        "http://example.org/image1",
+        "http://example.org/image2",
+        {
+          source: "http://example.org/",
+        },
+      ],
+    },
+  };
+  return fixtures[name];
+};
+
+module.exports.getFixture = getFixture;
+module.exports.getDB = getDB;
diff --git a/test/iri_spec.js b/test1/iri_spec.js
similarity index 100%
rename from test/iri_spec.js
rename to test1/iri_spec.js
diff --git a/test/languagetags_spec.js b/test1/languagetags_spec.js
similarity index 100%
rename from test/languagetags_spec.js
rename to test1/languagetags_spec.js
diff --git a/test/mocha.opts b/test1/mocha.opts
similarity index 100%
rename from test/mocha.opts
rename to test1/mocha.opts
diff --git a/test1/put_spec.js b/test1/put_spec.js
new file mode 100644
index 0000000..207961e
--- /dev/null
+++ b/test1/put_spec.js
@@ -0,0 +1,869 @@
+var expect = require('chai').expect;
+var helper = require('./helper');
+
+describe('jsonld.put', function() {
+
+  var db, manu;
+
+  beforeEach(function() {
+    db = helper.getDB();
+    manu = helper.getFixture('manu.json');
+  });
+
+  afterEach(function(done) {
+    db.close(done);
+  });
+
+  it('should accept a done callback', function(done) {
+    db.jsonld.put(manu, done);
+  });
+
+  it('should store a triple', function(done) {
+    db.jsonld.put(manu, function() {
+      db.get({
+        subject: 'http://manu.sporny.org#person',
+        predicate: 'http://xmlns.com/foaf/0.1/name'
+      }, function(err, triples) {
+        expect(triples).to.have.length(1);
+        done();
+      });
+    });
+  });
+
+  it('should store two triples', function(done) {
+    db.jsonld.put(manu, function() {
+      db.get({
+        subject: 'http://manu.sporny.org#person'
+      }, function(err, triples) {
+        expect(triples).to.have.length(2);
+        done();
+      });
+    });
+  });
+
+  it('should store a JSON file', function(done) {
+    db.jsonld.put(JSON.stringify(manu), function() {
+      db.get({
+        subject: 'http://manu.sporny.org#person'
+      }, function(err, triples) {
+        expect(triples).to.have.length(2);
+        done();
+      });
+    });
+  });
+
+  it('should support a base IRI', function(done) {
+    manu['@id'] = '42'
+    db.jsonld.put(manu, { base: 'http://levelgraph.org/tests/' }, function() {
+      db.get({
+        subject: 'http://levelgraph.org/tests/42',
+        predicate: 'http://xmlns.com/foaf/0.1/name'
+      }, function(err, triples) {
+        expect(triples).to.have.length(1);
+        done();
+      });
+    });
+  });
+
+  it('should generate an @id for unknown objects', function(done) {
+    delete manu['@id'];
+    var baseString = 'http://levelgraph.org/tests/';
+    var baseRegEx = /^_\:/;
+
+    db.jsonld.put(manu, { base: baseString }, function() {
+      db.search({
+        subject: db.v('subject'),
+        predicate: 'http://xmlns.com/foaf/0.1/name'
+      }, function(err, solutions) {
+        expect(solutions[0].subject).to.match(baseRegEx);
+        done();
+      });
+    });
+  });
+
+  it('should generate an @id for all blank nodes in a complex object', function(done) {
+    var tesla = helper.getFixture('tesla.json');
+
+    db.jsonld.put(tesla, { blank_ids: true }, function(err, obj) {
+      expect(obj['gr:hasPriceSpecification']['@id']).to.match(/^_\:/);
+      expect(obj['gr:includes']['@id']).to.match(/^_\:/);
+      done();
+    });
+  });
+
+  it('should generate an @id for all blank nodes in a @list object', function(done) {
+    var listdoc = helper.getFixture('list.json');
+
+    db.jsonld.put(listdoc, { blank_ids: true }, function(err, obj) {
+      expect(obj['https://example.org/list']['@list']).to.have.length(2)
+      obj['https://example.org/list']['@list'].forEach(function (e) {
+        expect(e['@id']).to.match(/^_:/)
+      })
+      db.jsonld.get(obj['@id'], {}, function (err, loaded) {
+        expect(loaded['https://example.org/list']['@list']).to.have.length(2)
+        done();
+      });
+    });
+  });
+
+  it('should pass the generated @id to callback', function(done) {
+    delete manu['@id'];
+    var baseString = 'http://levelgraph.org/tests/';
+    var baseRegEx = /^_\:/;
+
+    db.jsonld.put(manu, { base: baseString, blank_ids: true }, function(err, obj) {
+      expect(obj['@id']).to.match(baseRegEx);
+      done();
+    });
+  });
+
+  it('should convert @type into http://www.w3.org/1999/02/22-rdf-syntax-ns#type', function(done) {
+    db.jsonld.put(helper.getFixture('tesla.json'), function() {
+      db.get({
+        subject: 'http://example.org/cars/for-sale#tesla',
+        predicate: 'http://www.w3.org/1999/02/22-rdf-syntax-ns#type',
+        object: 'http://purl.org/goodrelations/v1#Offering'
+      }, function(err, triples) {
+        expect(triples).to.have.length(1);
+        done();
+      });
+    });
+  });
+
+  it('should update a property', function(done) {
+    db.jsonld.put(manu, function(err, instance) {
+      instance.homepage = 'http://another/website';
+      db.jsonld.put(instance, function() {
+        db.get({
+          subject: 'http://manu.sporny.org#person',
+          predicate: 'http://xmlns.com/foaf/0.1/homepage',
+          object: 'http://another/website'
+        }, function(err, triples) {
+          expect(triples).to.have.length(1);
+          done();
+        });
+      });
+    });
+  });
+
+  it('should add a property', function(done) {
+    db.jsonld.put(manu, function(err, instance) {
+      instance.age = 42;
+      instance['@context'].age = 'http://xmlns.com/foaf/0.1/age';
+
+      db.jsonld.put(instance, function() {
+        db.get({
+          subject: 'http://manu.sporny.org#person',
+          predicate: 'http://xmlns.com/foaf/0.1/age',
+          object: '"42"^^http://www.w3.org/2001/XMLSchema#integer'
+        }, function(err, triples) {
+          expect(triples).to.have.length(1);
+          done();
+        });
+      });
+    });
+  });
+
+  it('should delete a property', function(done) {
+    db.jsonld.put(manu, function(err, instance) {
+      delete instance.homepage
+
+      db.jsonld.put(instance, function() {
+        db.get({
+          subject: 'http://manu.sporny.org#person',
+          predicate: 'http://xmlns.com/foaf/0.1/homepage'
+        }, function(err, triples) {
+          expect(triples).to.have.length(1);
+          done();
+        });
+      });
+    });
+  });
+
+
+  it('should overwrite properties with the overwrite option', function(done) {
+    db.jsonld.put(manu, function(err, instance) {
+      delete instance.homepage
+
+      db.jsonld.put(instance, { overwrite: true }, function() {
+        db.get({
+          subject: 'http://manu.sporny.org#person',
+          predicate: 'http://xmlns.com/foaf/0.1/homepage'
+        }, function(err, triples) {
+          expect(triples).to.have.length(1);
+          done();
+        });
+      });
+    });
+  });
+
+  it('should delete a nested object', function(done) {
+    db.jsonld.put(helper.getFixture('tesla.json'), function(err, instance) {
+      delete instance['gr:hasPriceSpecification'];
+
+      db.jsonld.put(instance, function() {
+        db.get({
+          subject: 'http://example.org/cars/for-sale#tesla',
+          predicate: 'http://purl.org/goodrelations/v1#'
+        }, function(err, triples) {
+          expect(triples).to.be.empty;
+          done();
+        });
+      });
+    });
+  });
+
+  it('should receive error on invalid input', function(done) {
+    var invalid = {
+      "@context": { "@vocab": "http//example.com/" },
+      "test": { "@value": "foo", "bar": "oh yes" }
+    }
+    db.jsonld.put(invalid, function(err) {
+      expect(err && err.name).to.equal('jsonld.SyntaxError');
+      expect(err && err.message).to.equal('Invalid JSON-LD syntax; the value of "@vocab" in a @context must be an absolute IRI.');
+      done();
+    });
+  });
+
+  it('should manage mapped @id', function(done) {
+    var mapped_id = helper.getFixture('mapped_id.json')
+    db.jsonld.put(mapped_id, {preserve: true}, function(err, obj) {
+      expect(err && err.name).to.be.null;
+      db.get({}, function(err, triples) {
+        expect(triples).to.have.length(4);
+        done();
+      });
+    });
+  });
+
+  it('should insert graphs', function(done) {
+    var library = helper.getFixture('library.json');
+
+    db.jsonld.put(library, function() {
+      db.get({}, function(err, triples) {
+        expect(triples).to.have.length(9);
+        done();
+      });
+    });
+  });
+
+});
+
+describe('jsonld.put with default base and overwrite and cut option set to true (backward compatibility)', function() {
+
+  var db, manu;
+
+  beforeEach(function() {
+    db = helper.getDB({ jsonld: { base: 'http://levelgraph.io/ahah/', overwrite: true, cut: true } });
+    manu = helper.getFixture('manu.json');
+  });
+
+  afterEach(function(done) {
+    db.close(done);
+  });
+
+  it('should use it', function(done) {
+    manu['@id'] = '42'
+    db.jsonld.put(manu, function() {
+      db.get({
+        subject: 'http://levelgraph.io/ahah/42',
+        predicate: 'http://xmlns.com/foaf/0.1/name'
+      }, function(err, triples) {
+        expect(triples).to.have.length(1);
+        done();
+      });
+    });
+  });
+
+  it('should correctly generate blank nodes as subjects', function(done) {
+    var tesla = helper.getFixture('tesla.json');
+
+    db.jsonld.put(tesla, function() {
+      db.search([{
+        subject: 'http://example.org/cars/for-sale#tesla',
+        predicate: 'http://purl.org/goodrelations/v1#hasPriceSpecification',
+        object: db.v('bnode')
+      }, {
+        subject: db.v('bnode'),
+        predicate: 'http://purl.org/goodrelations/v1#hasCurrency',
+        object: '"USD"'
+      }], function(err, solutions) {
+        expect(solutions[0].bnode).to.exist;
+        done();
+      });
+    });
+  });
+
+  it('should not store undefined objects', function(done) {
+    var tesla = helper.getFixture('tesla.json');
+
+    db.jsonld.put(tesla, function() {
+      db.get({}, function(err, triples) {
+        triples.forEach(function(triple) {
+          expect(triple.object).to.exist;
+        });
+        done();
+      });
+    });
+  });
+
+  it('should support nested objects', function(done) {
+    var nested = helper.getFixture('nested.json');
+
+    db.jsonld.put(nested, function() {
+      db.get({}, function(err, triples) {
+        expect(triples).to.have.length(5);
+        done();
+      });
+    });
+  });
+
+  it('should break compatibility and not delete existing triples', function(done) {
+    var chapter = helper.getFixture('chapter.json');
+    var description = helper.getFixture('chapterdescription.json');
+
+    db.jsonld.put(chapter, function() {
+      db.jsonld.put(description, function() {
+        db.get({}, function(err, triples) {
+          expect(triples).to.have.length(3);
+          done();
+        });
+      });
+    });
+  });
+
+  it('should not delete existing facts with the cut option set to false', function(done) {
+    var chapter = helper.getFixture('chapter.json');
+    var description = helper.getFixture('chapterdescription.json');
+
+    db.jsonld.put(chapter, function() {
+      db.jsonld.put(description, { cut: false }, function() {
+        db.get({}, function(err, triples) {
+          expect(triples).to.have.length(3);
+          done();
+        });
+      });
+    });
+  });
+
+  it('should insert graphs', function(done) {
+    var library = helper.getFixture('library.json');
+
+    db.jsonld.put(library, function() {
+      db.get({}, function(err, triples) {
+        expect(triples).to.have.length(9);
+        done();
+      });
+    });
+  });
+
+});
+
+describe('jsonld.put with base', function() {
+
+  var db, manu;
+
+  beforeEach(function() {
+    db = helper.getDB({ jsonld: { base: 'http://levelgraph.io/ahah/' } });
+    manu = helper.getFixture('manu.json');
+  });
+
+  afterEach(function(done) {
+    db.close(done);
+  });
+
+
+  it('should accept a done callback', function(done) {
+    db.jsonld.put(manu, done);
+  });
+
+  it('should store a triple', function(done) {
+    db.jsonld.put(manu, function() {
+      db.get({
+        subject: 'http://manu.sporny.org#person',
+        predicate: 'http://xmlns.com/foaf/0.1/name'
+      }, function(err, triples) {
+        expect(triples).to.have.length(1);
+        done();
+      });
+    });
+  });
+
+  it('should store two triples', function(done) {
+    db.jsonld.put(manu, function() {
+      db.get({
+        subject: 'http://manu.sporny.org#person'
+      }, function(err, triples) {
+        expect(triples).to.have.length(2);
+        done();
+      });
+    });
+  });
+
+  it('should store a JSON file', function(done) {
+    db.jsonld.put(JSON.stringify(manu), function() {
+      db.get({
+        subject: 'http://manu.sporny.org#person'
+      }, function(err, triples) {
+        expect(triples).to.have.length(2);
+        done();
+      });
+    });
+  });
+
+  it('should support a base IRI', function(done) {
+    manu['@id'] = '42'
+    db.jsonld.put(manu, { base: 'http://levelgraph.org/tests/' }, function() {
+      db.get({
+        subject: 'http://levelgraph.org/tests/42',
+        predicate: 'http://xmlns.com/foaf/0.1/name'
+      }, function(err, triples) {
+        expect(triples).to.have.length(1);
+        done();
+      });
+    });
+  });
+
+  it('should generate an @id for unknown objects with the blank_ids option', function(done) {
+    delete manu['@id'];
+    var baseString = 'http://levelgraph.org/tests/';
+    var baseRegEx = /^_\:/;
+
+    db.jsonld.put(manu, { base: baseString, blank_ids: true }, function() {
+      db.search({
+        subject: db.v('subject'),
+        predicate: 'http://xmlns.com/foaf/0.1/name'
+      }, function(err, solutions) {
+        expect(solutions[0].subject).to.match(baseRegEx);
+        done();
+      });
+    });
+  });
+
+  it('should pass the generated @id to callback with the blank_ids option', function(done) {
+    delete manu['@id'];
+    var baseString = 'http://levelgraph.org/tests/';
+    var baseRegEx = /^_\:/;
+
+    db.jsonld.put(manu, { base: baseString, blank_ids: true }, function(err, obj) {
+      expect(obj['@id']).to.match(baseRegEx);
+      done();
+    });
+  });
+
+  it('should convert @type into http://www.w3.org/1999/02/22-rdf-syntax-ns#type', function(done) {
+    db.jsonld.put(helper.getFixture('tesla.json'), function() {
+      db.get({
+        subject: 'http://example.org/cars/for-sale#tesla',
+        predicate: 'http://www.w3.org/1999/02/22-rdf-syntax-ns#type',
+        object: 'http://purl.org/goodrelations/v1#Offering'
+      }, function(err, triples) {
+        expect(triples).to.have.length(1);
+        done();
+      });
+    });
+  });
+
+  it('should update a property', function(done) {
+    db.jsonld.put(manu, function(err, instance) {
+      instance.homepage = 'http://another/website';
+      db.jsonld.put(instance, function() {
+        db.get({
+          subject: 'http://manu.sporny.org#person',
+          predicate: 'http://xmlns.com/foaf/0.1/homepage',
+          object: 'http://another/website'
+        }, function(err, triples) {
+          expect(triples).to.have.length(1);
+          done();
+        });
+      });
+    });
+  });
+
+  it('should add a property', function(done) {
+    db.jsonld.put(manu, function(err, instance) {
+      instance.age = 42;
+      instance['@context'].age = 'http://xmlns.com/foaf/0.1/age';
+
+      db.jsonld.put(instance, function() {
+        db.get({
+          subject: 'http://manu.sporny.org#person',
+          predicate: 'http://xmlns.com/foaf/0.1/age',
+          object: '"42"^^http://www.w3.org/2001/XMLSchema#integer'
+        }, function(err, triples) {
+          expect(triples).to.have.length(1);
+          done();
+        });
+      });
+    });
+  });
+
+  it('should delete a property but preserve existing ones', function(done) {
+    db.jsonld.put(manu, function(err, instance) {
+      delete instance.homepage
+
+      db.jsonld.put(instance, function() {
+        db.get({
+          subject: 'http://manu.sporny.org#person',
+          predicate: 'http://xmlns.com/foaf/0.1/homepage'
+        }, function(err, triples) {
+          expect(triples).to.have.length(1);
+          done();
+        });
+      });
+    });
+  });
+
+
+  it('should preserve properties with the preserve option', function(done) {
+    db.jsonld.put(manu, function(err, instance) {
+      delete instance.homepage
+
+      db.jsonld.put(instance, { preserve: true }, function() {
+        db.get({
+          subject: 'http://manu.sporny.org#person',
+          predicate: 'http://xmlns.com/foaf/0.1/homepage'
+        }, function(err, triples) {
+          expect(triples).to.have.length(1);
+          done();
+        });
+      });
+    });
+  });
+
+
+  it('should use the base option', function(done) {
+    manu['@id'] = '42'
+    db.jsonld.put(manu, function() {
+      db.get({
+        subject: 'http://levelgraph.io/ahah/42',
+        predicate: 'http://xmlns.com/foaf/0.1/name'
+      }, function(err, triples) {
+        expect(triples).to.have.length(1);
+        done();
+      });
+    });
+  });
+
+  it('should correctly generate blank nodes as subjects', function(done) {
+    var tesla = helper.getFixture('tesla.json');
+
+    db.jsonld.put(tesla, function() {
+      db.search([{
+        subject: 'http://example.org/cars/for-sale#tesla',
+        predicate: 'http://purl.org/goodrelations/v1#hasPriceSpecification',
+        object: db.v('bnode')
+      }, {
+        subject: db.v('bnode'),
+        predicate: 'http://purl.org/goodrelations/v1#hasCurrency',
+        object: '"USD"'
+      }], function(err, solutions) {
+        expect(solutions[0].bnode).to.exist;
+        done();
+      });
+    });
+  });
+
+  it('should not store undefined objects', function(done) {
+    var tesla = helper.getFixture('tesla.json');
+
+    db.jsonld.put(tesla, function() {
+      db.get({}, function(err, triples) {
+        triples.forEach(function(triple) {
+          expect(triple.object).to.exist;
+        });
+        done();
+      });
+    });
+  });
+
+
+  it('should delete a nested object', function(done) {
+    db.jsonld.put(helper.getFixture('tesla.json'), function(err, instance) {
+      delete instance['gr:hasPriceSpecification'];
+
+      db.jsonld.put(instance, function() {
+        db.get({
+          subject: 'http://example.org/cars/for-sale#tesla',
+          predicate: 'http://purl.org/goodrelations/v1#'
+        }, function(err, triples) {
+          expect(triples).to.be.empty;
+          done();
+        });
+      });
+    });
+  });
+
+  it('should receive error on invalid input', function(done) {
+    var invalid = {
+      "@context": { "@vocab": "http//example.com/" },
+      "test": { "@value": "foo", "bar": "oh yes" }
+    }
+    db.jsonld.put(invalid, function(err) {
+      expect(err && err.name).to.equal('jsonld.SyntaxError');
+      expect(err && err.message).to.equal('Invalid JSON-LD syntax; the value of "@vocab" in a @context must be an absolute IRI.');
+      done();
+    });
+  });
+
+  it('should not overwrite existing facts', function(done) {
+    var chapter = helper.getFixture('chapter.json');
+    var description = helper.getFixture('chapterdescription.json');
+
+    db.jsonld.put(chapter, function() {
+      db.jsonld.put(description, function() {
+        db.get({}, function(err, triples) {
+          expect(triples).to.have.length(3);
+          done();
+        });
+      });
+    });
+  });
+
+  it('should insert graphs', function(done) {
+    var library = helper.getFixture('library.json');
+
+    db.jsonld.put(library, function() {
+      db.get({}, function(err, triples) {
+        expect(triples).to.have.length(9);
+        done();
+      });
+    });
+  });
+
+  describe('jsonld.put with overwrite and cut set to true (backward compatibility)', function() {
+
+    var db, manu;
+
+    beforeEach(function() {
+      db = helper.getDB({ jsonld: { overwrite: false, cut: true } });
+      manu = helper.getFixture('manu.json');
+    });
+
+    afterEach(function(done) {
+      db.close(done);
+    });
+
+    it('should accept a done callback', function(done) {
+      db.jsonld.put(manu, done);
+    });
+
+    it('should store a triple', function(done) {
+      db.jsonld.put(manu, function() {
+        db.get({
+          subject: 'http://manu.sporny.org#person',
+          predicate: 'http://xmlns.com/foaf/0.1/name'
+        }, function(err, triples) {
+          expect(triples).to.have.length(1);
+          done();
+        });
+      });
+    });
+
+    it('should store two triples', function(done) {
+      db.jsonld.put(manu, function() {
+        db.get({
+          subject: 'http://manu.sporny.org#person'
+        }, function(err, triples) {
+          expect(triples).to.have.length(2);
+          done();
+        });
+      });
+    });
+
+    it('should store a JSON file', function(done) {
+      db.jsonld.put(JSON.stringify(manu), function() {
+        db.get({
+          subject: 'http://manu.sporny.org#person'
+        }, function(err, triples) {
+          expect(triples).to.have.length(2);
+          done();
+        });
+      });
+    });
+
+    it('should support a base IRI', function(done) {
+      manu['@id'] = '42'
+      db.jsonld.put(manu, { base: 'http://levelgraph.org/tests/' }, function() {
+        db.get({
+          subject: 'http://levelgraph.org/tests/42',
+          predicate: 'http://xmlns.com/foaf/0.1/name'
+        }, function(err, triples) {
+          expect(triples).to.have.length(1);
+          done();
+        });
+      });
+    });
+
+    it('should generate an @id for unknown objects', function(done) {
+      delete manu['@id'];
+      var baseString = 'http://levelgraph.org/tests/';
+      var baseRegEx = /^_\:/;
+
+      db.jsonld.put(manu, { base: baseString, blank_ids: true  }, function() {
+        db.search({
+          subject: db.v('subject'),
+          predicate: 'http://xmlns.com/foaf/0.1/name'
+        }, function(err, solutions) {
+          expect(solutions[0].subject).to.match(baseRegEx);
+          done();
+        });
+      });
+    });
+
+    it('should generate an @id for all blank nodes in a complex object', function(done) {
+      var tesla = helper.getFixture('tesla.json');
+
+      db.jsonld.put(tesla, { blank_ids: true }, function(err, obj) {
+        expect(obj['gr:hasPriceSpecification']['@id']).to.match(/^_\:/);
+        expect(obj['gr:includes']['@id']).to.match(/^_\:/);
+        done();
+      });
+    });
+
+    it('should pass the generated @id to callback', function(done) {
+      delete manu['@id'];
+      var baseString = 'http://levelgraph.org/tests/';
+      var baseRegEx = /^_\:/;
+
+      db.jsonld.put(manu, { base: baseString, blank_ids: true  }, function(err, obj) {
+        expect(obj['@id']).to.match(baseRegEx);
+        done();
+      });
+    });
+
+    it('should convert @type into http://www.w3.org/1999/02/22-rdf-syntax-ns#type', function(done) {
+      db.jsonld.put(helper.getFixture('tesla.json'), function() {
+        db.get({
+          subject: 'http://example.org/cars/for-sale#tesla',
+          predicate: 'http://www.w3.org/1999/02/22-rdf-syntax-ns#type',
+          object: 'http://purl.org/goodrelations/v1#Offering'
+        }, function(err, triples) {
+          expect(triples).to.have.length(1);
+          done();
+        });
+      });
+    });
+
+    it('should update a property', function(done) {
+      db.jsonld.put(manu, function(err, instance) {
+        instance.homepage = 'http://another/website';
+        db.jsonld.put(instance, function() {
+          db.get({
+            subject: 'http://manu.sporny.org#person',
+            predicate: 'http://xmlns.com/foaf/0.1/homepage',
+            object: 'http://another/website'
+          }, function(err, triples) {
+            expect(triples).to.have.length(1);
+            done();
+          });
+        });
+      });
+    });
+
+    it('should add a property', function(done) {
+      db.jsonld.put(manu, function(err, instance) {
+        instance.age = 42;
+        instance['@context'].age = 'http://xmlns.com/foaf/0.1/age';
+
+        db.jsonld.put(instance, function() {
+          db.get({
+            subject: 'http://manu.sporny.org#person',
+            predicate: 'http://xmlns.com/foaf/0.1/age',
+            object: '"42"^^http://www.w3.org/2001/XMLSchema#integer'
+          }, function(err, triples) {
+            expect(triples).to.have.length(1);
+            done();
+          });
+        });
+      });
+    });
+
+    it('should break compatibility and keep an existing property', function(done) {
+      db.jsonld.put(manu, function(err, instance) {
+        delete instance.homepage
+
+        db.jsonld.put(instance, function() {
+          db.get({
+            subject: 'http://manu.sporny.org#person',
+            predicate: 'http://xmlns.com/foaf/0.1/homepage'
+          }, function(err, triples) {
+            expect(triples).to.have.length(1);
+            done();
+          });
+        });
+      });
+    });
+
+
+    it('should preserve properties with the overwrite option set to false', function(done) {
+      db.jsonld.put(manu, function(err, instance) {
+        delete instance.homepage
+
+        db.jsonld.put(instance, { overwrite: false }, function() {
+          db.get({
+            subject: 'http://manu.sporny.org#person',
+            predicate: 'http://xmlns.com/foaf/0.1/homepage'
+          }, function(err, triples) {
+            expect(triples).to.have.length(1);
+            done();
+          });
+        });
+      });
+    });
+
+    it('should delete a nested object', function(done) {
+      db.jsonld.put(helper.getFixture('tesla.json'), function(err, instance) {
+        delete instance['gr:hasPriceSpecification'];
+
+        db.jsonld.put(instance, function() {
+          db.get({
+            subject: 'http://example.org/cars/for-sale#tesla',
+            predicate: 'http://purl.org/goodrelations/v1#'
+          }, function(err, triples) {
+            expect(triples).to.be.empty;
+            done();
+          });
+        });
+      });
+    });
+
+    it('should receive error on invalid input', function(done) {
+      var invalid = {
+        "@context": { "@vocab": "http//example.com/" },
+        "test": { "@value": "foo", "bar": "oh yes" }
+      }
+      db.jsonld.put(invalid, function(err) {
+        expect(err && err.name).to.equal('jsonld.SyntaxError');
+        expect(err && err.message).to.equal('Invalid JSON-LD syntax; the value of "@vocab" in a @context must be an absolute IRI.');
+        done();
+      });
+    });
+
+    it('should manage mapped @id', function(done) {
+      var mapped_id = helper.getFixture('mapped_id.json')
+      db.jsonld.put(mapped_id, {preserve: true}, function(err) {
+        expect(err && err.name).to.be.null;
+        db.jsonld.get(mapped_id["id"], { "@context": mapped_id["@context"]}, function(err, obj) {
+          db.get({}, function(err, triples) {
+            expect(triples).to.have.length(4);
+            done();
+          });
+        });
+      });
+    });
+
+    it('should insert graphs', function(done) {
+      var library = helper.getFixture('library.json');
+
+      db.jsonld.put(library, function() {
+        db.get({}, function(err, triples) {
+          expect(triples).to.have.length(9);
+          done();
+        });
+      });
+    });
+
+  });
+
+});
diff --git a/test1/search_persist_spec.js b/test1/search_persist_spec.js
new file mode 100644
index 0000000..e0b3404
--- /dev/null
+++ b/test1/search_persist_spec.js
@@ -0,0 +1,68 @@
+var expect = require('chai').expect;
+var helper = require('./helper_persist');
+
+describe('db.search persist', function() {
+
+  var db, gang, manu;
+
+  beforeEach(function() {
+    db = helper.getDB();
+    manu = helper.getFixture('manu.json');
+    manu['@context']['knows'] = { "@type": "@id" };
+    manu['@context']['based_near'] = { "@type": "@id" };
+    manu['knows'] = [
+    {
+      "@id": "https://my-profile.eu/people/deiu/card#me",
+      "name": "Andrei Vlad Sambra",
+      "based_near": "http://dbpedia.org/resource/Paris"
+    }, {
+      "@id": "http://melvincarvalho.com/#me",
+      "name": "Melvin Carvalho",
+      "based_near": "http://dbpedia.org/resource/Honolulu"
+    }, {
+      "@id": "http://bblfish.net/people/henry/card#me",
+      "name": "Henry Story",
+      "based_near": "http://dbpedia.org/resource/Paris"
+    }, {
+      "@id": "http://presbrey.mit.edu/foaf#presbrey",
+      "name": "Joe Presbrey",
+      "based_near": "http://dbpedia.org/resource/Cambridge"
+    }
+    ];
+  });
+
+  afterEach(function(done) {
+    db.close(done);
+  });
+
+  it('should find homies in Paris', function(done) {
+    var paris = 'http://dbpedia.org/resource/Paris';
+    var parisians = [{
+      webid: 'http://bblfish.net/people/henry/card#me',
+      name: '"Henry Story"'
+    }, {
+      webid: 'https://my-profile.eu/people/deiu/card#me',
+      name: '"Andrei Vlad Sambra"'
+    }];
+
+    db.jsonld.put(manu, function(){
+      db.search([{
+        subject: manu['@id'],
+        predicate: 'http://xmlns.com/foaf/0.1/knows',
+        object: db.v('webid')
+      }, {
+        subject: db.v('webid'),
+        predicate: 'http://xmlns.com/foaf/0.1/based_near',
+        object: paris
+      }, {
+        subject: db.v('webid'),
+        predicate: 'http://xmlns.com/foaf/0.1/name',
+        object: db.v('name')
+      }], function(err, solution) {
+        expect(solution).to.eql(parisians);
+        done();
+      });
+    });
+  });
+
+});
diff --git a/test/search_spec.js b/test1/search_spec.js
similarity index 100%
rename from test/search_spec.js
rename to test1/search_spec.js