add test for lib/setcursor.js

Author: etpinard

test/jasmine/tests/lib_test.js

@@ -1,5 +1,11 @@
 var Lib = require('@src/lib');
-var Plots = require('@src/plots/plots');
+var setCursor = require('@src/lib/setcursor');
+
+var d3 = require('d3');
+var PlotlyInternal = require('@src/plotly');
+var createGraphDiv = require('../assets/create_graph_div');
+var destroyGraphDiv = require('../assets/destroy_graph_div');
+var Plots = PlotlyInternal.Plots;
 
 
 describe('Test lib.js:', function() {
@@ -715,4 +721,53 @@ describe('Test lib.js:', function() {
         });
     });
 
+    describe('setCursor', function() {
+
+        beforeEach(function() {
+            this.el3 = d3.select(createGraphDiv());
+        });
+
+        afterEach(destroyGraphDiv);
+
+        it('should assign cursor- class', function() {
+            setCursor(this.el3, 'one');
+
+            expect(this.el3.attr('class')).toEqual('cursor-one');
+        });
+
+        it('should assign cursor- class while present non-cursor- classes', function() {
+            this.el3.classed('one', true);
+            this.el3.classed('two', true);
+            this.el3.classed('three', true);
+            setCursor(this.el3, 'one');
+
+            expect(this.el3.attr('class')).toEqual('one two three cursor-one');
+        });
+
+        it('should update class from one cursor- class to another', function() {
+            this.el3.classed('cursor-one', true);
+            setCursor(this.el3, 'two');
+
+            expect(this.el3.attr('class')).toEqual('cursor-two');
+        });
+
+        it('should update multiple cursor- classes', function() {
+            this.el3.classed('cursor-one', true);
+            this.el3.classed('cursor-two', true);
+            this.el3.classed('cursor-three', true);
+            setCursor(this.el3, 'four');
+
+            expect(this.el3.attr('class')).toEqual('cursor-four');
+        });
+
+        it('should remove cursor- if no new class is given', function() {
+            this.el3.classed('cursor-one', true);
+            this.el3.classed('cursor-two', true);
+            this.el3.classed('cursor-three', true);
+            setCursor(this.el3);
+
+            expect(this.el3.attr('class')).toEqual('');
+        });
+    });
+
 });