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// Copyright 2008 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 This file defines a strict mock implementation.
*/
goog.provide('goog.testing.StrictMock');
goog.require('goog.array');
goog.require('goog.testing.Mock');
/**
* This is a mock that verifies that methods are called in the order that they
* are specified during the recording phase. Since it verifies order, it
* follows 'fail fast' semantics. If it detects a deviation from the
* expectations, it will throw an exception and not wait for verify to be
* called.
* @param {Object} objectToMock The object to mock.
* @param {boolean=} opt_mockStaticMethods An optional argument denoting that
* a mock should be constructed from the static functions of a class.
* @param {boolean=} opt_createProxy An optional argument denoting that
* a proxy for the target mock should be created.
* @constructor
* @extends {goog.testing.Mock}
*/
goog.testing.StrictMock = function(objectToMock, opt_mockStaticMethods,
opt_createProxy) {
goog.testing.Mock.call(this, objectToMock, opt_mockStaticMethods,
opt_createProxy);
/**
* An array of MockExpectations.
* @type {Array.<goog.testing.MockExpectation>}
* @private
*/
this.$expectations_ = [];
};
goog.inherits(goog.testing.StrictMock, goog.testing.Mock);
/** @override */
goog.testing.StrictMock.prototype.$recordExpectation = function() {
this.$expectations_.push(this.$pendingExpectation);
};
/** @override */
goog.testing.StrictMock.prototype.$recordCall = function(name, args) {
if (this.$expectations_.length == 0) {
this.$throwCallException(name, args);
}
// If the current expectation has a different name, make sure it was called
// enough and then discard it. We're through with it.
var currentExpectation = this.$expectations_[0];
while (!this.$verifyCall(currentExpectation, name, args)) {
// This might be an item which has passed its min, and we can now
// look past it, or it might be below its min and generate an error.
if (currentExpectation.actualCalls < currentExpectation.minCalls) {
this.$throwCallException(name, args, currentExpectation);
}
this.$expectations_.shift();
if (this.$expectations_.length < 1) {
// Nothing left, but this may be a failed attempt to call the previous
// item on the list, which may have been between its min and max.
this.$throwCallException(name, args, currentExpectation);
}
currentExpectation = this.$expectations_[0];
}
if (currentExpectation.maxCalls == 0) {
this.$throwCallException(name, args);
}
currentExpectation.actualCalls++;
// If we hit the max number of calls for this expectation, we're finished
// with it.
if (currentExpectation.actualCalls == currentExpectation.maxCalls) {
this.$expectations_.shift();
}
return this.$do(currentExpectation, args);
};
/** @override */
goog.testing.StrictMock.prototype.$reset = function() {
goog.testing.StrictMock.superClass_.$reset.call(this);
goog.array.clear(this.$expectations_);
};
/** @override */
goog.testing.StrictMock.prototype.$verify = function() {
goog.testing.StrictMock.superClass_.$verify.call(this);
while (this.$expectations_.length > 0) {
var expectation = this.$expectations_[0];
if (expectation.actualCalls < expectation.minCalls) {
this.$throwException('Missing a call to ' + expectation.name +
'\nExpected: ' + expectation.minCalls + ' but was: ' +
expectation.actualCalls);
} else {
// Don't need to check max, that's handled when the call is made
this.$expectations_.shift();
}
}
};
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