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// Copyright 2013 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.
/**
* Tests that an observation matches the expected value.
* @param {Object} expected The expected value.
* @param {Object} observed The actual value.
* @param {string=} opt_message Optional message to include with a test
* failure.
*/
function assertEquals(expected, observed, opt_message) {
if (observed !== expected) {
var message = 'Assertion Failed\n Observed: ' + observed +
'\n Expected: ' + expected;
if (opt_message)
message = message + '\n ' + opt_message;
throw new Error(message);
}
}
/**
* Verifies that a test result is true.
* @param {boolean} observed The observed value.
* @param {string=} opt_message Optional message to include with a test
* failure.
*/
function assertTrue(observed, opt_message) {
assertEquals(true, observed, opt_message);
}
/**
* Verifies that a test result is false.
* @param {boolean} observed The observed value.
* @param {string=} opt_message Optional message to include with a test
* failure.
*/
function assertFalse(observed, opt_message) {
assertEquals(false, observed, opt_message);
}
/**
* Verifies that the observed and reference values differ.
* @param {Object} reference The target value for comparison.
* @param {Object} observed The test result.
* @param {string=} opt_message Optional message to include with a test
* failure.
*/
function assertNotEqual(reference, observed, opt_message) {
if (observed === reference) {
var message = 'Assertion Failed\n Observed: ' + observed +
'\n Reference: ' + reference;
if (opt_message)
message = message + '\n ' + opt_message;
throw new Error(message);
}
}
/**
* Verifies that a test evaluation results in an exception.
* @param {!Function} f The test function.
*/
function assertThrows(f) {
var triggeredError = false;
try {
f();
} catch(err) {
triggeredError = true;
}
if (!triggeredError)
throw new Error('Assertion Failed: throw expected.');
}
/**
* Verifies that the contents of the expected and observed arrays match.
* @param {!Array} expected The expected result.
* @param {!Array} observed The actual result.
*/
function assertArrayEquals(expected, observed) {
var v1 = Array.prototype.slice.call(expected);
var v2 = Array.prototype.slice.call(observed);
var equal = v1.length == v2.length;
if (equal) {
for (var i = 0; i < v1.length; i++) {
if (v1[i] !== v2[i]) {
equal = false;
break;
}
}
}
if (!equal) {
var message =
['Assertion Failed', 'Observed: ' + v2, 'Expected: ' + v1].join('\n ');
throw new Error(message);
}
}
/**
* Verifies that the expected and observed result have the same content.
* @param {*} expected The expected result.
* @param {*} observed The actual result.
*/
function assertDeepEquals(expected, observed, opt_message) {
if (typeof expected == 'object' && expected != null) {
assertNotEqual(null, observed);
for (var key in expected) {
assertTrue(key in observed, opt_message);
assertDeepEquals(expected[key], observed[key], opt_message);
}
for (var key in observed) {
assertTrue(key in expected, opt_message);
}
} else {
assertEquals(expected, observed, opt_message);
}
}
/**
* Defines runTests.
*/
(function(exports) {
/**
* List of test cases.
* @type {Array.<string>} List of function names for tests to run.
*/
var testCases = [];
/**
* Indicates if all tests have run successfully.
* @type {boolean}
*/
var cleanTestRun = true;
/**
* Armed during setup of a test to call the matching tear down code.
* @type {Function}
*/
var pendingTearDown = null;
/**
* Runs all functions starting with test and reports success or
* failure of the test suite.
*/
function runTests() {
for (var name in window) {
if (typeof window[name] == 'function' && /^test/.test(name))
testCases.push(name);
}
if (!testCases.length) {
console.error('Failed to find test cases.');
cleanTestRun = false;
}
continueTesting();
}
/**
* Runs the next test in the queue. Reports the test results if the queue is
* empty.
* @param {boolean=} opt_asyncTestFailure Optional parameter indicated if the
* last asynchronous test failed.
*/
function continueTesting(opt_asyncTestFailure) {
if (opt_asyncTestFailure)
cleanTestRun = false;
var done = false;
if (pendingTearDown) {
pendingTearDown();
pendingTearDown = null;
}
if (testCases.length > 0) {
var fn = testCases.pop();
var isAsyncTest = window[fn].length;
try {
if (window.setUp)
window.setUp();
pendingTearDown = window.tearDown;
window[fn](continueTesting);
} catch(err) {
console.error('Failure in test ' + fn + '\n' + err);
console.log(err.stack);
cleanTestRun = false;
}
// Asynchronous tests must manually call continueTesting when complete.
if (!isAsyncTest)
continueTesting();
} else {
done = true;
endTests(cleanTestRun);
}
if (!done) {
domAutomationController.setAutomationId(1);
domAutomationController.send('PENDING');
}
};
exports.runTests = runTests;
})(this);
/**
* Signals completion of a test.
* @param {boolean} success Indicates if the test completed successfully.
*/
function endTests(success) {
domAutomationController.setAutomationId(1);
domAutomationController.send(success ? 'SUCCESS' : 'FAILURE');
}
window.onerror = function() {
endTests(false);
};
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