fix(data): increase coverage for data

js/tests/unit/dom/data.js

@@ -0,0 +1,83 @@
+$(function () {
+  'use strict'
+
+  QUnit.module('data')
+
+  QUnit.test('should be defined', function (assert) {
+    assert.expect(1)
+    assert.ok(Data, 'Data is defined')
+  })
+
+  QUnit.test('should set data in a element', function (assert) {
+    assert.expect(1)
+
+    var $div = $('<div />').appendTo('#qunit-fixture')
+    var data = {
+      test: 'bsData'
+    }
+    Data.setData($div[0], 'test', data)
+
+    assert.ok($div[0].key, 'element have a data key')
+  })
+
+  QUnit.test('should get data from an element', function (assert) {
+    assert.expect(1)
+
+    var $div = $('<div />').appendTo('#qunit-fixture')
+    var data = {
+      test: 'bsData'
+    }
+    Data.setData($div[0], 'test', data)
+
+    assert.strictEqual(Data.getData($div[0], 'test'), data)
+  })
+
+  QUnit.test('should return null if nothing is stored', function (assert) {
+    assert.expect(1)
+    assert.ok(Data.getData(document.body, 'test') === null)
+  })
+
+  QUnit.test('should return null if nothing is stored with an existing key', function (assert) {
+    assert.expect(1)
+
+    var $div = $('<div />').appendTo('#qunit-fixture')
+    $div[0].key = {
+      key: 'test2',
+      data: 'woot woot'
+    }
+
+    assert.ok(Data.getData($div[0], 'test') === null)
+  })
+
+  QUnit.test('should delete data', function (assert) {
+    assert.expect(2)
+
+    var $div = $('<div />').appendTo('#qunit-fixture')
+    var data = {
+      test: 'bsData'
+    }
+    Data.setData($div[0], 'test', data)
+    assert.ok(Data.getData($div[0], 'test') !== null)
+
+    Data.removeData($div[0], 'test')
+    assert.ok(Data.getData($div[0], 'test') === null)
+  })
+
+  QUnit.test('should delete nothing if there are nothing', function (assert) {
+    assert.expect(0)
+
+    Data.removeData(document.body, 'test')
+  })
+
+  QUnit.test('should delete nothing if not the good key', function (assert) {
+    assert.expect(0)
+
+    var $div = $('<div />').appendTo('#qunit-fixture')
+    $div[0].key = {
+      key: 'test2',
+      data: 'woot woot'
+    }
+
+    Data.removeData($div[0], 'test')
+  })
+})