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/* vim:ts=2:sts=2:sw=2:
* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is Jetpack.
*
* The Initial Developer of the Original Code is Mozilla.
* Portions created by the Initial Developer are Copyright (C) 2010
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Irakli Gozalishvili <gozala@mozilla.com> (Original Author)
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
"use strict";
const BaseAssert = require("./test/assert").Assert;
const { isFunction, isObject } = require("./type");
function extend(target) {
let descriptor = {}
Array.slice(arguments, 1).forEach(function(source) {
Object.getOwnPropertyNames(source).forEach(function onEach(name) {
descriptor[name] = Object.getOwnPropertyDescriptor(source, name);
});
});
return Object.create(target, descriptor);
}
/**
* Function takes test `suite` object in CommonJS format and defines all of the
* tests from that suite and nested suites in a jetpack format on a given
* `target` object. Optionally third argument `prefix` can be passed to prefix
* all the test names.
*/
function defineTestSuite(target, suite, prefix) {
prefix = prefix || "";
// If suite defines `Assert` that's what `assert` object have to be created
// from and passed to a test function (This allows custom assertion functions)
// See for details: http://wiki.commonjs.org/wiki/Unit_Testing/1.1
let Assert = suite.Assert || BaseAssert;
// Going through each item in the test suite and wrapping it into a
// Jetpack test format.
Object.keys(suite).forEach(function(key) {
// If name starts with test then it's a test function or suite.
if (key.indexOf("test") === 0) {
let test = suite[key];
// For each test function so we create a wrapper test function in a
// jetpack format and copy that to a `target` exports.
if (isFunction(test)) {
// Since names of the test may match across suites we use full object
// path as a name to avoid overriding same function.
target[prefix + key] = function(options) {
// Creating `assert` functions for this test.
let assert = Assert(options);
// If CommonJS test function expects more than one argument
// it means that test is async and second argument is a callback
// to notify that test is finished.
if (1 < test.length) {
// Letting test runner know that test is executed async and
// creating a callback function that CommonJS tests will call
// once it's done.
options.waitUntilDone();
test(assert, function() {
options.done();
});
}
// Otherwise CommonJS test is synchronous so we call it only with
// one argument.
else {
test(assert);
}
}
}
// If it's an object then it's a test suite containing test function
// and / or nested test suites. In that case we just extend prefix used
// and call this function to copy and wrap tests from nested suite.
else if (isObject(test)) {
// We need to clone `tests` instead of modifying it, since it's very
// likely that it is frozen (usually test suites imported modules).
test = extend(Object.prototype, test, {
Assert: test.Assert || Assert
});
defineTestSuite(target, test, prefix + key + ".");
}
}
});
}
/**
* This function is a CommonJS test runner function, but since Jetpack test
* runner and test format is different from CommonJS this function shims given
* `exports` with all its tests into a Jetpack test format so that the built-in
* test runner will be able to run CommonJS test without manual changes.
*/
exports.run = function run(exports) {
// We can't leave old properties on exports since those are test in a CommonJS
// format that why we move everything to a new `suite` object.
let suite = {};
Object.keys(exports).forEach(function(key) {
suite[key] = exports[key];
delete exports[key];
});
// Now we wrap all the CommonJS tests to a Jetpack format and define
// those to a given `exports` object since that where jetpack test runner
// will look for them.
defineTestSuite(exports, suite);
};
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