add test for Drawing.setClipUrl

Author: etpinard

test/jasmine/tests/drawing_test.js

@@ -0,0 +1,45 @@
+var Drawing = require('@src/components/drawing');
+
+var d3 = require('d3');
+
+
+describe('Drawing.setClipUrl', function() {
+    'use strict';
+
+    beforeEach(function() {
+        this.svg = d3.select('body').append('svg');
+        this.g = this.svg.append('g');
+    });
+
+    it('should set the clip-path attribute', function() {
+        expect(this.g.attr('clip-path')).toBe(null);
+
+        Drawing.setClipUrl(this.g, 'id1');
+
+        expect(this.g.attr('clip-path')).toEqual('url(#id1)');
+    });
+
+    it('should unset the clip-path if arg is falsy', function() {
+        this.g.attr('clip-path', 'url(#id2)');
+
+        Drawing.setClipUrl(this.g, false);
+
+        expect(this.g.attr('clip-path')).toBe(null);
+    });
+
+    it('should append window URL to clip-path if <base> is present', function() {
+
+        // append <base> with href
+        d3.select('body')
+            .append('base')
+            .attr('href', 'https://plot.ly');
+
+        // grab window URL
+        var href = window.location.href;
+
+        Drawing.setClipUrl(this.g, 'id3');
+
+        expect(this.g.attr('clip-path'))
+            .toEqual('url(' + href + '#id3)');
+    });
+});