| // 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. |
| |
| goog.provide('goog.testing.recordFunctionTest'); |
| goog.setTestOnly('goog.testing.recordFunctionTest'); |
| |
| goog.require('goog.functions'); |
| goog.require('goog.testing.PropertyReplacer'); |
| goog.require('goog.testing.jsunit'); |
| goog.require('goog.testing.recordConstructor'); |
| goog.require('goog.testing.recordFunction'); |
| |
| var stubs = new goog.testing.PropertyReplacer(); |
| |
| function tearDown() { |
| stubs.reset(); |
| } |
| |
| function testNoCalls() { |
| var f = goog.testing.recordFunction(goog.functions.identity); |
| assertEquals('call count', 0, f.getCallCount()); |
| assertNull('last call', f.getLastCall()); |
| assertArrayEquals('all calls', [], f.getCalls()); |
| } |
| |
| function testWithoutArguments() { |
| var f = goog.testing.recordFunction(); |
| assertUndefined('f(1)', f(1)); |
| assertEquals('call count', 1, f.getCallCount()); |
| var lastCall = f.getLastCall(); |
| assertEquals('original function', goog.nullFunction, lastCall.getFunction()); |
| assertEquals('this context', window, lastCall.getThis()); |
| assertArrayEquals('arguments', [1], lastCall.getArguments()); |
| assertEquals('arguments[0]', 1, lastCall.getArgument(0)); |
| assertUndefined('arguments[1]', lastCall.getArgument(1)); |
| assertUndefined('return value', lastCall.getReturnValue()); |
| } |
| |
| function testWithIdentityFunction() { |
| var f = goog.testing.recordFunction(goog.functions.identity); |
| var dummyThis = {}; |
| assertEquals('f(1)', 1, f(1)); |
| assertEquals('f.call(dummyThis, 2)', 2, f.call(dummyThis, 2)); |
| |
| var calls = f.getCalls(); |
| var firstCall = calls[0]; |
| var lastCall = f.getLastCall(); |
| assertEquals('call count', 2, f.getCallCount()); |
| assertEquals('last call', calls[1], lastCall); |
| assertEquals('original function', goog.functions.identity, |
| lastCall.getFunction()); |
| assertEquals('this context of first call', window, firstCall.getThis()); |
| assertEquals('this context of last call', dummyThis, lastCall.getThis()); |
| assertArrayEquals('arguments of the first call', [1], |
| firstCall.getArguments()); |
| assertArrayEquals('arguments of the last call', [2], lastCall.getArguments()); |
| assertEquals('return value of the first call', 1, firstCall.getReturnValue()); |
| assertEquals('return value of the last call', 2, lastCall.getReturnValue()); |
| assertNull('error thrown by the first call', firstCall.getError()); |
| assertNull('error thrown by the last call', lastCall.getError()); |
| } |
| |
| function testWithErrorFunction() { |
| var f = goog.testing.recordFunction(goog.functions.error('error')); |
| |
| var error = assertThrows('f(1) should throw an error', function() { |
| f(1); |
| }); |
| assertEquals('error message', 'error', error.message); |
| assertEquals('call count', 1, f.getCallCount()); |
| var lastCall = f.getLastCall(); |
| assertEquals('this context', window, lastCall.getThis()); |
| assertArrayEquals('arguments', [1], lastCall.getArguments()); |
| assertUndefined('return value', lastCall.getReturnValue()); |
| assertEquals('recorded error message', 'error', lastCall.getError().message); |
| } |
| |
| function testWithClass() { |
| var ns = {}; |
| /** @constructor */ |
| ns.TestClass = function(num) { |
| this.setX(ns.TestClass.identity(1) + num); |
| }; |
| ns.TestClass.prototype.setX = function(x) { |
| this.x = x; |
| }; |
| ns.TestClass.identity = function(x) { |
| return x; |
| }; |
| var originalNsTestClass = ns.TestClass; |
| |
| stubs.set(ns, 'TestClass', goog.testing.recordConstructor(ns.TestClass)); |
| stubs.set(ns.TestClass.prototype, 'setX', |
| goog.testing.recordFunction(ns.TestClass.prototype.setX)); |
| stubs.set(ns.TestClass, 'identity', |
| goog.testing.recordFunction(ns.TestClass.identity)); |
| |
| var obj = new ns.TestClass(2); |
| assertEquals('constructor is called once', 1, ns.TestClass.getCallCount()); |
| var lastConstructorCall = ns.TestClass.getLastCall(); |
| assertArrayEquals('... with argument 2', [2], |
| lastConstructorCall.getArguments()); |
| assertEquals('the created object', obj, lastConstructorCall.getThis()); |
| assertEquals('type of the created object', originalNsTestClass, |
| obj.constructor); |
| |
| assertEquals('setX is called once', 1, obj.setX.getCallCount()); |
| assertArrayEquals('... with argument 3', [3], |
| obj.setX.getLastCall().getArguments()); |
| assertEquals('The x field is properly set', 3, obj.x); |
| |
| assertEquals('identity is called once', 1, |
| ns.TestClass.identity.getCallCount()); |
| assertArrayEquals('... with argument 1', [1], |
| ns.TestClass.identity.getLastCall().getArguments()); |
| } |
| |
| function testPopLastCall() { |
| var f = goog.testing.recordFunction(); |
| f(0); |
| f(1); |
| |
| var firstCall = f.getCalls()[0]; |
| var lastCall = f.getCalls()[1]; |
| assertEquals('return value of popLastCall', lastCall, f.popLastCall()); |
| assertArrayEquals('1 call remains', [firstCall], f.getCalls()); |
| assertEquals('next return value of popLastCall', firstCall, f.popLastCall()); |
| assertArrayEquals('0 calls remain', [], f.getCalls()); |
| assertNull('no more calls to pop', f.popLastCall()); |
| } |
| |
| function testReset() { |
| var f = goog.testing.recordFunction(); |
| f(0); |
| f(1); |
| |
| assertEquals('Should be two calls.', 2, f.getCallCount()); |
| |
| f.reset(); |
| |
| assertEquals('Call count should reset.', 0, f.getCallCount()); |
| } |
| |
| function testAssertCallCount() { |
| var f = goog.testing.recordFunction(goog.functions.identity); |
| |
| f.assertCallCount(0); |
| |
| f('Poodles'); |
| f.assertCallCount(1); |
| |
| f('Hopscotch'); |
| f.assertCallCount(2); |
| |
| f.reset(); |
| f.assertCallCount(0); |
| |
| f('Bedazzler'); |
| f.assertCallCount(1); |
| |
| assertThrows(function() { |
| f.assertCallCount(11); |
| }); |
| } |