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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.
/**
* Asserts that a given argument's value is undefined.
* @param {object} a The argument to check.
*/
function assertUndefined(a) {
if (a !== undefined) {
throw new Error('Assertion failed: expected undefined');
}
}
/**
* Asserts that the argument is neither null nor undefined.
* @param {object} obj The argument to check.
* @param {string=} opt_message Error message if the condition is not met.
*/
function assertNotNullNorUndefined(obj, opt_message) {
if (obj === undefined || obj === null) {
throw new Error('Can\'t be null or undefined: ' + (opt_message || '') +
'\n' + 'Actual: ' + a);
}
}
/**
* Asserts that a given function call throws an exception.
* @param {string} msg Message to print if exception not thrown.
* @param {Function} fn The function to call.
* @param {string} error The name of the exception we expect {@code fn} to
* throw.
*/
function assertException(msg, fn, error) {
try {
fn();
} catch (e) {
if (error && e.name != error) {
throw new Error('Expected to throw ' + error + ' but threw ' + e.name +
' - ' + msg);
}
return;
}
throw new Error('Expected to throw exception ' + error + ' - ' + msg);
}
/**
* Asserts that two arrays of strings are equal.
* @param {Array<string>} array1 The expected array.
* @param {Array<string>} array2 The test array.
*/
function assertEqualStringArrays(array1, array2) {
var same = true;
if (array1.length != array2.length) {
same = false;
}
for (var i = 0; i < Math.min(array1.length, array2.length); i++) {
if (array1[i].trim() != array2[i].trim()) {
same = false;
}
}
if (!same) {
throw new Error('Expected ' + JSON.stringify(array1) +
', got ' + JSON.stringify(array2));
}
}
/**
* Asserts that two objects have the same JSON serialization.
* @param {Object} expected The expected object.
* @param {Object} actual The actual object.
* @param {string=} opt_message Message used for errors.
*/
function assertEqualsJSON(expected, actual, opt_message) {
if (JSON.stringify(actual) !== JSON.stringify(expected)) {
throw new Error((opt_message ? opt_message + '\n' : '') +
'Expected ' + JSON.stringify(expected) + '\n' +
'Got ' + JSON.stringify(actual));
}
}
assertSame = assertEquals;
assertNotSame = assertNotEquals;
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