Add unit tests for event.js
BUG=121479
TEST=supplied unit tests
Review URL: https://chromiumcodereview.appspot.com/10383035
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@136200 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/chrome/renderer/extensions/event_unittest.cc b/chrome/renderer/extensions/event_unittest.cc
new file mode 100644
index 0000000..ca1d9b04
--- /dev/null
+++ b/chrome/renderer/extensions/event_unittest.cc
@@ -0,0 +1,89 @@
+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "chrome/test/base/module_system_test.h"
+
+#include "grit/renderer_resources.h"
+
+namespace {
+
+class EventUnittest : public ModuleSystemTest {
+ virtual void SetUp() OVERRIDE {
+ ModuleSystemTest::SetUp();
+ module_system_->RunString("chrome = {};", "setup-chrome");
+
+ RegisterModule("event", IDR_EVENT_BINDINGS_JS);
+
+ // Mock out the native handler for event_bindings. These mocks will fail if
+ // any invariants maintained by the real event_bindings are broken.
+ OverrideNativeHandler("event_bindings",
+ "var assert = requireNative('assert');"
+ "var attachedListeners = exports.attachedListeners = {};"
+ "exports.AttachEvent = function(eventName) {"
+ " assert.AssertFalse(!!attachedListeners[eventName]);"
+ " attachedListeners[eventName] = 1;"
+ "};"
+ "exports.DetachEvent = function(eventName) {"
+ " assert.AssertTrue(!!attachedListeners[eventName]);"
+ " delete attachedListeners[eventName];"
+ "};");
+ OverrideNativeHandler("chrome_hidden",
+ "var chromeHidden = {};"
+ "exports.GetChromeHidden = function() { return chromeHidden; };");
+ }
+};
+
+TEST_F(EventUnittest, TestNothing) {
+ ExpectNoAssertionsMade();
+}
+
+TEST_F(EventUnittest, AddRemoveTwoListeners) {
+ ModuleSystem::NativesEnabledScope natives_enabled_scope(module_system_.get());
+ RegisterModule("test",
+ "var assert = requireNative('assert');"
+ "var event = require('event');"
+ "var eventBindings = requireNative('event_bindings');"
+ "var myEvent = new event.Event('named-event');"
+ "var cb1 = function() {};"
+ "var cb2 = function() {};"
+ "myEvent.addListener(cb1);"
+ "myEvent.addListener(cb2);"
+ "myEvent.removeListener(cb1);"
+ "assert.AssertTrue(!!eventBindings.attachedListeners['named-event']);"
+ "myEvent.removeListener(cb2);"
+ "assert.AssertFalse(!!eventBindings.attachedListeners['named-event']);");
+ module_system_->Require("test");
+}
+
+TEST_F(EventUnittest, EventsThatSupportRulesMustHaveAName) {
+ ModuleSystem::NativesEnabledScope natives_enabled_scope(module_system_.get());
+ RegisterModule("test",
+ "var event = require('event');"
+ "var eventOpts = {supportsRules: true};"
+ "var assert = requireNative('assert');"
+ "var caught = false;"
+ "try {"
+ " var myEvent = new event.Event(undefined, undefined, eventOpts);"
+ "} catch (e) {"
+ " caught = true;"
+ "}"
+ "assert.AssertTrue(caught);");
+ module_system_->Require("test");
+}
+
+TEST_F(EventUnittest, NamedEventDispatch) {
+ ModuleSystem::NativesEnabledScope natives_enabled_scope(module_system_.get());
+ RegisterModule("test",
+ "var event = require('event');"
+ "var chromeHidden = requireNative('chrome_hidden').GetChromeHidden();"
+ "var assert = requireNative('assert');"
+ "var e = new event.Event('myevent');"
+ "var called = false;"
+ "e.addListener(function() { called = true; });"
+ "chromeHidden.Event.dispatch('myevent', []);"
+ "assert.AssertTrue(called);");
+ module_system_->Require("test");
+}
+
+} // namespace
