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// Copyright 2014 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.
/**
* @fileoverview
* Integration module for QUnit tests running in browser tests.
* Specifically it:
* - Sets QUnit.autostart to false, so that the browser test can hook the test
* results callback before the test starts.
* - Implements a text-based test reporter to report test results back to the
* browser test.
*/
(function(QUnit, automationController, exports) {
'use strict';
var TestReporter = function() {
this.errorMessage_ = '';
this.failedTestsCount_ = 0;
this.failedAssertions_ = [];
};
TestReporter.prototype.init = function(qunit) {
qunit.testDone(this.onTestDone_.bind(this));
qunit.log(this.onAssertion_.bind(this));
};
TestReporter.prototype.onTestDone_ = function(details) {
if (this.failedAssertions_.length > 0) {
this.errorMessage_ += ' ' + details.module + '.' + details.name + '\n';
this.errorMessage_ += this.failedAssertions_.map(
function(assertion, index){
return ' ' + (index + 1) + '. ' + assertion.message + '\n' +
' ' + assertion.source;
}).join('\n');
this.failedAssertions_ = [];
this.failedTestsCount_++;
}
};
TestReporter.prototype.onAssertion_ = function(details) {
if (!details.result) {
this.failedAssertions_.push(details);
}
};
TestReporter.prototype.getErrorMessage = function(){
var errorMessage = '';
if (this.failedTestsCount_ > 0) {
var test = (this.failedTestsCount_ > 1) ? 'tests' : 'test';
errorMessage = this.failedTestsCount_ + ' ' + test + ' failed:\n';
errorMessage += this.errorMessage_;
}
return errorMessage;
};
var BrowserTestHarness = function(qunit, domAutomationController, reporter) {
this.qunit_ = qunit;
this.automationController_ = domAutomationController;
this.reporter_ = reporter;
};
BrowserTestHarness.prototype.init = function() {
this.qunit_.config.autostart = false;
};
BrowserTestHarness.prototype.run = function() {
this.reporter_.init(this.qunit_);
this.qunit_.start();
this.qunit_.done(function(details){
this.automationController_.send(JSON.stringify({
passed: details.passed == details.total,
errorMessage: this.reporter_.getErrorMessage()
}));
}.bind(this));
};
// The browser test runs chrome with the flag --dom-automation, which creates
// the window.domAutomationController object. This allows the test suite to
// JS-encoded data back to the browser test.
if (automationController) {
if (!QUnit) {
console.error('browser_test_harness.js must be included after QUnit.js.');
return;
}
var testHarness = new BrowserTestHarness(
QUnit,
automationController,
new TestReporter());
testHarness.init();
exports.browserTestHarness = testHarness;
}
})(window.QUnit, window.domAutomationController, window);
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