v8/test/promises-aplus/lib/mocha.js
rossberg@chromium.org dbb7f982d3 Add Promises/A+ Compliance Test Suite.
This CL introduces Promises/A+ tests[1].
This CL doesn't contain the test itself: it will be downloaded by test cfg.py.
This CL includes some helper JS functions to run the test in d8 shell.

[1]: https://github.com/promises-aplus/promises-tests

BUG=347095
LOG=Y
R=rossberg@chromium.org

Review URL: https://codereview.chromium.org/196733002

Patch from Yutaka Hirano <yhirano@chromium.org>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19973 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2014-03-17 10:03:01 +00:00

265 lines
7.1 KiB
JavaScript

// Copyright 2014 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.
// This file emulates Mocha test framework used in promises-aplus tests.
var describe;
var it;
var specify;
var before;
var after;
var beforeEach;
var afterEach;
var RunAllTests;
var assert = require('assert');
(function() {
var TIMEOUT = 1000;
function PostMicrotask(fn) {
var o = {};
Object.observe(o, function() {
fn();
});
// Change something to enqueue a microtask.
o.x = 'hello';
}
var context = {
beingDescribed: undefined,
currentSuiteIndex: 0,
suites: []
};
function Run() {
function current() {
while (context.currentSuiteIndex < context.suites.length &&
context.suites[context.currentSuiteIndex].hasRun) {
++context.currentSuiteIndex;
}
if (context.suites.length == context.currentSuiteIndex) {
return undefined;
}
return context.suites[context.currentSuiteIndex];
}
var suite = current();
if (!suite) {
// done
print('All tests have run.');
return;
}
suite.Run();
}
RunAllTests = function() {
context.currentSuiteIndex = 0;
var numRegularTestCases = 0;
for (var i = 0; i < context.suites.length; ++i) {
numRegularTestCases += context.suites[i].numRegularTestCases();
}
print(context.suites.length + ' suites and ' + numRegularTestCases +
' test cases are found');
Run();
};
function TestCase(name, before, fn, after, isRegular) {
this.name = name;
this.before = before;
this.fn = fn;
this.after = after;
this.isRegular = isRegular;
this.hasDone = false;
}
TestCase.prototype.RunFunction = function(suite, fn, postAction) {
if (!fn) {
postAction();
return;
}
try {
if (fn.length === 0) {
// synchronous
fn();
postAction();
} else {
// asynchronous
fn(postAction);
}
} catch (e) {
suite.ReportError(this, e);
}
}
TestCase.prototype.MarkAsDone = function() {
this.hasDone = true;
clearTimeout(this.timer);
}
TestCase.prototype.Run = function(suite, postAction) {
print('Running ' + suite.description + '#' + this.name + ' ...');
assert.clear();
this.timer = setTimeout(function() {
suite.ReportError(this, Error('timeout'));
}.bind(this), TIMEOUT);
this.RunFunction(suite, this.before, function(e) {
if (this.hasDone) {
return;
}
if (e instanceof Error) {
return suite.ReportError(this, e);
}
if (assert.fails.length > 0) {
return suite.ReportError(this, assert.fails[0]);
}
this.RunFunction(suite, this.fn, function(e) {
if (this.hasDone) {
return;
}
if (e instanceof Error) {
return suite.ReportError(this, e);
}
if (assert.fails.length > 0) {
return suite.ReportError(this, assert.fails[0]);
}
this.RunFunction(suite, this.after, function(e) {
if (this.hasDone) {
return;
}
if (e instanceof Error) {
return suite.ReportError(this, e);
}
if (assert.fails.length > 0) {
return suite.ReportError(this, assert.fails[0]);
}
this.MarkAsDone();
if (this.isRegular) {
print('PASS: ' + suite.description + '#' + this.name);
}
PostMicrotask(postAction);
}.bind(this));
}.bind(this));
}.bind(this));
};
function TestSuite(described) {
this.description = described.description;
this.cases = [];
this.currentIndex = 0;
this.hasRun = false;
if (described.before) {
this.cases.push(new TestCase(this.description + ' :before', undefined,
described.before, undefined, false));
}
for (var i = 0; i < described.cases.length; ++i) {
this.cases.push(new TestCase(described.cases[i].description,
described.beforeEach,
described.cases[i].fn,
described.afterEach,
true));
}
if (described.after) {
this.cases.push(new TestCase(this.description + ' :after',
undefined, described.after, undefined, false));
}
}
TestSuite.prototype.Run = function() {
this.hasRun = this.currentIndex === this.cases.length;
if (this.hasRun) {
PostMicrotask(Run);
return;
}
// TestCase.prototype.Run cannot throw an exception.
this.cases[this.currentIndex].Run(this, function() {
++this.currentIndex;
PostMicrotask(Run);
}.bind(this));
};
TestSuite.prototype.numRegularTestCases = function() {
var n = 0;
for (var i = 0; i < this.cases.length; ++i) {
if (this.cases[i].isRegular) {
++n;
}
}
return n;
}
TestSuite.prototype.ReportError = function(testCase, e) {
if (testCase.hasDone) {
return;
}
testCase.MarkAsDone();
this.hasRun = this.currentIndex === this.cases.length;
print('FAIL: ' + this.description + '#' + testCase.name + ': ' +
e.name + ' (' + e.message + ')');
++this.currentIndex;
PostMicrotask(Run);
};
describe = function(description, fn) {
var parent = context.beingDescribed;
var incomplete = {
cases: [],
description: parent ? parent.description + ' ' + description : description,
parent: parent,
};
context.beingDescribed = incomplete;
fn();
context.beingDescribed = parent;
context.suites.push(new TestSuite(incomplete));
}
specify = it = function(description, fn) {
context.beingDescribed.cases.push({description: description, fn: fn});
}
before = function(fn) {
context.beingDescribed.before = fn;
}
after = function(fn) {
context.beingDescribed.after = fn;
}
beforeEach = function(fn) {
context.beingDescribed.beforeEach = fn;
}
afterEach = function(fn) {
context.beingDescribed.afterEach = fn;
}
}());