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-// Copyright 2010 The Closure Library Authors. All Rights Reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-// http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS-IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-/**
- * @fileoverview Defines DeferredTestCase class. By calling waitForDeferred(),
- * tests in DeferredTestCase can wait for a Deferred object to complete its
- * callbacks before continuing to the next test.
- *
- * Example Usage:
- *
- * var deferredTestCase = goog.testing.DeferredTestCase.createAndInstall();
- * // Optionally, set a longer-than-usual step timeout.
- * deferredTestCase.stepTimeout = 15 * 1000; // 15 seconds
- *
- * function testDeferredCallbacks() {
- * var callbackTime = goog.now();
- * var callbacks = new goog.async.Deferred();
- * deferredTestCase.addWaitForAsync('Waiting for 1st callback', callbacks);
- * callbacks.addCallback(
- * function() {
- * assertTrue(
- * 'We\'re going back in time!', goog.now() >= callbackTime);
- * callbackTime = goog.now();
- * });
- * deferredTestCase.addWaitForAsync('Waiting for 2nd callback', callbacks);
- * callbacks.addCallback(
- * function() {
- * assertTrue(
- * 'We\'re going back in time!', goog.now() >= callbackTime);
- * callbackTime = goog.now();
- * });
- * deferredTestCase.addWaitForAsync('Waiting for last callback', callbacks);
- * callbacks.addCallback(
- * function() {
- * assertTrue(
- * 'We\'re going back in time!', goog.now() >= callbackTime);
- * callbackTime = goog.now();
- * });
- *
- * deferredTestCase.waitForDeferred(callbacks);
- * }
- *
- * Note that DeferredTestCase still preserves the functionality of
- * AsyncTestCase.
- *
- * @see.goog.async.Deferred
- * @see goog.testing.AsyncTestCase
- */
-
-goog.provide('goog.testing.DeferredTestCase');
-
-goog.require('goog.async.Deferred');
-goog.require('goog.testing.AsyncTestCase');
-goog.require('goog.testing.TestCase');
-
-
-
-/**
- * A test case that can asynchronously wait on a Deferred object.
- * @param {string=} opt_name A descriptive name for the test case.
- * @constructor
- * @extends {goog.testing.AsyncTestCase}
- */
-goog.testing.DeferredTestCase = function(opt_name) {
- goog.testing.AsyncTestCase.call(this, opt_name);
-};
-goog.inherits(goog.testing.DeferredTestCase, goog.testing.AsyncTestCase);
-
-
-/**
- * Preferred way of creating a DeferredTestCase. Creates one and initializes it
- * with the G_testRunner.
- * @param {string=} opt_name A descriptive name for the test case.
- * @return {goog.testing.DeferredTestCase} The created DeferredTestCase.
- */
-goog.testing.DeferredTestCase.createAndInstall = function(opt_name) {
- var deferredTestCase = new goog.testing.DeferredTestCase(opt_name);
- goog.testing.TestCase.initializeTestRunner(deferredTestCase);
- return deferredTestCase;
-};
-
-
-/**
- * Handler for when the test produces an error.
- * @param {Error|string} err The error object.
- * @protected
- * @throws Always throws a ControlBreakingException.
- */
-goog.testing.DeferredTestCase.prototype.onError = function(err) {
- this.doAsyncError(err);
-};
-
-
-/**
- * Handler for when the test succeeds.
- * @protected
- */
-goog.testing.DeferredTestCase.prototype.onSuccess = function() {
- this.continueTesting();
-};
-
-
-/**
- * Adds a callback to update the wait message of this async test case. Using
- * this method generously also helps to document the test flow.
- * @param {string} msg The update wait status message.
- * @param {goog.async.Deferred} d The deferred object to add the waitForAsync
- * callback to.
- * @see goog.testing.AsyncTestCase#waitForAsync
- */
-goog.testing.DeferredTestCase.prototype.addWaitForAsync = function(msg, d) {
- d.addCallback(goog.bind(this.waitForAsync, this, msg));
-};
-
-
-/**
- * Wires up given Deferred object to the test case, then starts the
- * goog.async.Deferred object's callback.
- * @param {!string|goog.async.Deferred} a The wait status message or the
- * deferred object to wait for.
- * @param {goog.async.Deferred=} opt_b The deferred object to wait for.
- */
-goog.testing.DeferredTestCase.prototype.waitForDeferred = function(a, opt_b) {
- var waitMsg;
- var deferred;
- switch (arguments.length) {
- case 1:
- deferred = a;
- waitMsg = null;
- break;
- case 2:
- deferred = opt_b;
- waitMsg = a;
- break;
- default: // Shouldn't be here in compiled mode
- throw Error('Invalid number of arguments');
- }
- deferred.addCallbacks(this.onSuccess, this.onError, this);
- if (!waitMsg) {
- waitMsg = 'Waiting for deferred in ' + this.getCurrentStepName();
- }
- this.waitForAsync( /** @type {!string} */ (waitMsg));
- deferred.callback(true);
-};