v8/test/mjsunit/mjsunit.js

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// Copyright 2008 the V8 project authors. All rights reserved.
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following
// disclaimer in the documentation and/or other materials provided
// with the distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived
// from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
function MjsUnitAssertionError(message) {
this.message = message;
// This allows fetching the stack trace using TryCatch::StackTrace.
this.stack = new Error("").stack;
}
MjsUnitAssertionError.prototype.toString = function () {
return this.message;
}
/*
* This file is included in all mini jsunit test cases. The test
* framework expects lines that signal failed tests to start with
* the f-word and ignore all other lines.
*/
function fail(expected, found, name_opt) {
var start;
if (name_opt) {
// Fix this when we ditch the old test runner.
start = "Fail" + "ure (" + name_opt + "): ";
} else {
start = "Fail" + "ure:";
}
throw new MjsUnitAssertionError(start + " expected <" + expected + "> found <" + found + ">");
}
function deepObjectEquals(a, b) {
var aProps = [];
for (var key in a)
aProps.push(key);
var bProps = [];
for (var key in b)
bProps.push(key);
aProps.sort();
bProps.sort();
if (!deepEquals(aProps, bProps))
return false;
for (var i = 0; i < aProps.length; i++) {
if (!deepEquals(a[aProps[i]], b[aProps[i]]))
return false;
}
return true;
}
function deepEquals(a, b) {
if (a == b) return true;
if (typeof a == "number" && typeof b == "number" && isNaN(a) && isNaN(b)) {
return true;
}
if (a == null || b == null) return false;
if (a.constructor === RegExp || b.constructor === RegExp) {
return (a.constructor === b.constructor) && (a.toString === b.toString);
}
if ((typeof a) !== 'object' || (typeof b) !== 'object' ||
(a === null) || (b === null))
return false;
if (a.constructor === Array) {
if (b.constructor !== Array)
return false;
if (a.length != b.length)
return false;
for (var i = 0; i < a.length; i++) {
if (i in a) {
if (!(i in b) || !(deepEquals(a[i], b[i])))
return false;
} else if (i in b) {
return false;
}
}
return true;
} else {
return deepObjectEquals(a, b);
}
}
function assertEquals(expected, found, name_opt) {
if (!deepEquals(found, expected)) {
fail(expected, found, name_opt);
}
}
function assertArrayEquals(expected, found, name_opt) {
var start = "";
if (name_opt) {
start = name_opt + " - ";
}
assertEquals(expected.length, found.length, start + "array length");
if (expected.length == found.length) {
for (var i = 0; i < expected.length; ++i) {
assertEquals(expected[i], found[i], start + "array element at index " + i);
}
}
}
function assertTrue(value, name_opt) {
assertEquals(true, value, name_opt);
}
function assertFalse(value, name_opt) {
assertEquals(false, value, name_opt);
}
function assertNaN(value, name_opt) {
if (!isNaN(value)) {
fail("NaN", value, name_opt);
}
}
function assertNull(value, name_opt) {
if (value !== null) {
fail("null", value, name_opt);
}
}
function assertNotNull(value, name_opt) {
if (value === null) {
fail("not null", value, name_opt);
}
}
function assertThrows(code, type_opt, cause_opt) {
var threwException = true;
try {
if (typeof code == 'function') {
code();
} else {
eval(code);
}
threwException = false;
} catch (e) {
if (typeof type_opt == 'function')
assertInstanceof(e, type_opt);
if (arguments.length >= 3)
assertEquals(e.type, cause_opt);
// Do nothing.
}
if (!threwException) assertTrue(false, "did not throw exception");
}
function assertInstanceof(obj, type) {
if (!(obj instanceof type)) {
assertTrue(false, "Object <" + obj + "> is not an instance of <" + type + ">");
}
}
function assertDoesNotThrow(code) {
try {
if (typeof code == 'function') {
code();
} else {
eval(code);
}
} catch (e) {
assertTrue(false, "threw an exception: " + (e.message || e));
}
}
function assertUnreachable(name_opt) {
// Fix this when we ditch the old test runner.
var message = "Fail" + "ure: unreachable"
if (name_opt) {
message += " - " + name_opt;
}
throw new MjsUnitAssertionError(message);
}