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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 Helper class for recording the calls of a function.
- *
- * Example:
- * <pre>
- * var stubs = new goog.testing.PropertyReplacer();
- *
- * function tearDown() {
- * stubs.reset();
- * }
- *
- * function testShuffle() {
- * stubs.set(Math, 'random', goog.testing.recordFunction(Math.random));
- * var arr = shuffle([1, 2, 3, 4, 5]);
- * assertSameElements([1, 2, 3, 4, 5], arr);
- * assertEquals(4, Math.random.getCallCount());
- * }
- *
- * function testOpenDialog() {
- * stubs.set(goog.ui, 'Dialog',
- * goog.testing.recordConstructor(goog.ui.Dialog));
- * openConfirmDialog();
- * var lastDialogInstance = goog.ui.Dialog.getLastCall().getThis();
- * assertEquals('confirm', lastDialogInstance.getTitle());
- * }
- * </pre>
- *
- */
-
-goog.provide('goog.testing.FunctionCall');
-goog.provide('goog.testing.recordConstructor');
-goog.provide('goog.testing.recordFunction');
-
-
-/**
- * Wraps the function into another one which calls the inner function and
- * records its calls. The recorded function will have 3 static methods:
- * {@code getCallCount}, {@code getCalls} and {@code getLastCall} but won't
- * inherit the original function's prototype and static fields.
- *
- * @param {!Function=} opt_f The function to wrap and record. Defaults to
- * {@link goog.nullFunction}.
- * @return {!Function} The wrapped function.
- */
-goog.testing.recordFunction = function(opt_f) {
- var f = opt_f || goog.nullFunction;
- var calls = [];
-
- function recordedFunction() {
- try {
- var ret = f.apply(this, arguments);
- calls.push(new goog.testing.FunctionCall(f, this, arguments, ret, null));
- return ret;
- } catch (err) {
- calls.push(new goog.testing.FunctionCall(f, this, arguments, undefined,
- err));
- throw err;
- }
- }
-
- /**
- * @return {number} Total number of calls.
- */
- recordedFunction.getCallCount = function() {
- return calls.length;
- };
-
- /**
- * @return {!Array.<!goog.testing.FunctionCall>} All calls of the recorded
- * function.
- */
- recordedFunction.getCalls = function() {
- return calls;
- };
-
- /**
- * @return {goog.testing.FunctionCall} Last call of the recorded function or
- * null if it hasn't been called.
- */
- recordedFunction.getLastCall = function() {
- return calls[calls.length - 1] || null;
- };
-
- /**
- * Returns and removes the last call of the recorded function.
- * @return {goog.testing.FunctionCall} Last call of the recorded function or
- * null if it hasn't been called.
- */
- recordedFunction.popLastCall = function() {
- return calls.pop() || null;
- };
-
- /**
- * Resets the recorded function and removes all calls.
- */
- recordedFunction.reset = function() {
- calls.length = 0;
- };
-
- return recordedFunction;
-};
-
-
-/**
- * Same as {@link goog.testing.recordFunction} but the recorded function will
- * have the same prototype and static fields as the original one. It can be
- * used with constructors.
- *
- * @param {!Function} ctor The function to wrap and record.
- * @return {!Function} The wrapped function.
- */
-goog.testing.recordConstructor = function(ctor) {
- var recordedConstructor = goog.testing.recordFunction(ctor);
- recordedConstructor.prototype = ctor.prototype;
- goog.mixin(recordedConstructor, ctor);
- return recordedConstructor;
-};
-
-
-
-/**
- * Struct for a single function call.
- * @param {!Function} func The called function.
- * @param {!Object} thisContext {@code this} context of called function.
- * @param {!Arguments} args Arguments of the called function.
- * @param {*} ret Return value of the function or undefined in case of error.
- * @param {*} error The error thrown by the function or null if none.
- * @constructor
- */
-goog.testing.FunctionCall = function(func, thisContext, args, ret, error) {
- this.function_ = func;
- this.thisContext_ = thisContext;
- this.arguments_ = Array.prototype.slice.call(args);
- this.returnValue_ = ret;
- this.error_ = error;
-};
-
-
-/**
- * @return {!Function} The called function.
- */
-goog.testing.FunctionCall.prototype.getFunction = function() {
- return this.function_;
-};
-
-
-/**
- * @return {!Object} {@code this} context of called function. It is the same as
- * the created object if the function is a constructor.
- */
-goog.testing.FunctionCall.prototype.getThis = function() {
- return this.thisContext_;
-};
-
-
-/**
- * @return {!Array} Arguments of the called function.
- */
-goog.testing.FunctionCall.prototype.getArguments = function() {
- return this.arguments_;
-};
-
-
-/**
- * Returns the nth argument of the called function.
- * @param {number} index 0-based index of the argument.
- * @return {*} The argument value or undefined if there is no such argument.
- */
-goog.testing.FunctionCall.prototype.getArgument = function(index) {
- return this.arguments_[index];
-};
-
-
-/**
- * @return {*} Return value of the function or undefined in case of error.
- */
-goog.testing.FunctionCall.prototype.getReturnValue = function() {
- return this.returnValue_;
-};
-
-
-/**
- * @return {*} The error thrown by the function or null if none.
- */
-goog.testing.FunctionCall.prototype.getError = function() {
- return this.error_;
-};