08-27-周三_17-09-29

node_modules/delegate/test/delegate.js

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+var delegate = require('../src/delegate');
+var simulant = require('simulant');
+
+describe('delegate', function() {
+    before(function() {
+        var html = '<ul>' +
+                        '<li><a>Item 1</a></li>' +
+                        '<li><a>Item 2</a></li>' +
+                        '<li><a>Item 3</a></li>' +
+                        '<li><a>Item 4</a></li>' +
+                        '<li><a>Item 5</a></li>' +
+                   '</ul>';
+
+        document.body.innerHTML += html;
+
+        global.container = document.querySelector('ul');
+        global.anchor = document.querySelector('a');
+
+        global.spy = sinon.spy(global.container, 'removeEventListener');
+    });
+
+    after(function() {
+        global.spy.restore();
+        document.body.innerHTML = '';
+    });
+
+    it('should add an event listener', function(done) {
+        delegate(global.container, 'a', 'click', function() {
+            done();
+        });
+
+        simulant.fire(global.anchor, simulant('click'));
+    });
+
+    it('should remove an event listener', function() {
+        var delegation = delegate(global.container, 'a', 'click', function() {});
+
+        delegation.destroy();
+        assert.ok(global.spy.calledOnce);
+    });
+
+    it('should use `document` if the element is unspecified', function(done) {
+        delegate('a', 'click', function() {
+            done();
+        });
+
+        simulant.fire(global.anchor, simulant('click'));
+    });
+
+    it('should remove an event listener the unspecified base (`document`)', function() {
+        var delegation = delegate('a', 'click', function() {});
+        var spy = sinon.spy(document, 'removeEventListener');
+
+        delegation.destroy();
+        assert.ok(spy.calledOnce);
+
+        spy.restore();
+    });
+
+    it('should add event listeners to all the elements in a base selector', function() {
+        var spy = sinon.spy();
+        delegate('li', 'a', 'click', spy);
+
+        var anchors = document.querySelectorAll('a');
+        simulant.fire(anchors[0], simulant('click'));
+        simulant.fire(anchors[1], simulant('click'));
+        assert.ok(spy.calledTwice);
+    });
+
+    it('should remove the event listeners from all the elements in a base selector', function() {
+        var items = document.querySelectorAll('li')
+        var spies = Array.prototype.map.call(items, function (li) {
+            return sinon.spy(li, 'removeEventListener');
+        });
+
+        var delegations = delegate('li', 'a', 'click', function() {});
+        delegations.forEach(function (delegation) {
+            delegation.destroy();
+        });
+
+        spies.every(function (spy) {
+            var success = spy.calledOnce;
+            spy.restore();
+            return success;
+        });
+    });
+
+    it('should add event listeners to all the elements in a base array', function() {
+        var spy = sinon.spy();
+        var items = document.querySelectorAll('li')
+        delegate(items, 'a', 'click', spy);
+
+        var anchors = document.querySelectorAll('a')
+        simulant.fire(anchors[0], simulant('click'));
+        simulant.fire(anchors[1], simulant('click'));
+        assert.ok(spy.calledTwice);
+    });
+
+    it('should remove the event listeners from all the elements in a base array', function() {
+        var items = document.querySelectorAll('li')
+        var spies = Array.prototype.map.call(items, function (li) {
+            return sinon.spy(li, 'removeEventListener');
+        });
+
+        var delegations = delegate(items, 'a', 'click', function() {});
+        delegations.forEach(function (delegation) {
+            delegation.destroy();
+        });
+
+        spies.every(function (spy) {
+            var success = spy.calledOnce;
+            spy.restore();
+            return success;
+        });
+    });
+});