Add tests on bucket for backward compatibility

spec/bucket_spec.rb

@@ -0,0 +1,37 @@
+# frozen_string_literal: true, encoding: ASCII-8BIT
+
+require File.expand_path("../support", __FILE__)
+
+class BucketTest < CouchbaseOrm::Base
+    attribute :name, :job
+end
+
+describe CouchbaseOrm::Base do
+    it "should return bucket name" do
+        name = BucketTest.bucket.name
+        expect(name).to eq("default")
+    end
+
+    it "should retrieve document from bucket" do
+        base = BucketTest.create!(name: 'joe')
+        resp = BucketTest.bucket.get(base.id, extended: true)
+        expect(resp.key).to eq(base.id)
+    end
+
+    it "should retrieve document from bucket" do
+        base = BucketTest.create!(name: 'joe')
+        resp = BucketTest.bucket.n1ql.select('RAW meta(ui).id').from('default').where('name="joe"').order_by('name DESC')
+        expect(resp.to_s).to eq("SELECT RAW meta(ui).id FROM default WHERE name=\"joe\" ORDER BY name DESC ")
+    end
+
+    it "should expose functions" do
+        functions = [
+            :build_index, :create_index, :drop_index, :create_primary_index,
+            :drop_primary_index, :grant, :on, :to, :infer, :select, :insert_into,
+            :delete_from, :update, :from, :with, :use_keys, :unnest, :join, :where,
+            :group_by,
+        ]
+        resp = BucketTest.bucket.n1ql.methods
+        expect(resp).to include(*functions)
+    end
+end