gecko-dev/mobile/android/base/tests/robocop_testharness.js

75 lines
3.0 KiB
JavaScript

// -*- indent-tabs-mode: nil; js-indent-level: 2 -*-
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
function sendMessageToJava(message) {
SpecialPowers.Services.androidBridge.handleGeckoMessage(message);
}
function _evalURI(uri, sandbox) {
// We explicitly allow Cross-Origin requests, since it is useful for
// testing, but we allow relative URLs by maintaining our baseURI.
let req = SpecialPowers.Cc["@mozilla.org/xmlextras/xmlhttprequest;1"]
.createInstance();
let baseURI = SpecialPowers.Services.io
.newURI(window.document.baseURI, window.document.characterSet, null);
let theURI = SpecialPowers.Services.io
.newURI(uri, window.document.characterSet, baseURI);
// We append a random slug to avoid caching: see
// https://developer.mozilla.org/en-US/docs/Web/API/XMLHttpRequest/Using_XMLHttpRequest#Bypassing_the_cache.
req.open('GET', theURI.spec + ((/\?/).test(theURI.spec) ? "&slug=" : "?slug=") + (new Date()).getTime(), false);
req.setRequestHeader('Cache-Control', 'no-cache');
req.setRequestHeader('Pragma', 'no-cache');
req.send();
return SpecialPowers.Cu.evalInSandbox(req.responseText, sandbox, "1.8", uri, 1);
}
/**
* Execute the Javascript file at `uri` in a testing sandbox populated
* with the Javascript test harness.
*
* `uri` should be a String, relative (to window.document.baseURI) or
* absolute.
*
* The Javascript test harness sends all output to Java via
* Robocop:JS messages.
*/
function testOneFile(uri) {
let HEAD_JS = "robocop_head.js";
// System principal. This is dangerous, but this is test code that
// should only run on developer and build farm machines, and the
// test harness needs access to a lot of the Components API,
// including Components.stack. Wrapping Components.stack in
// SpecialPowers magic obfuscates stack traces wonderfully,
// defeating much of the point of the test harness.
let principal = SpecialPowers.Cc["@mozilla.org/systemprincipal;1"]
.createInstance(SpecialPowers.Ci.nsIPrincipal);
let testScope = SpecialPowers.Cu.Sandbox(principal);
// Populate test environment with test harness prerequisites.
testScope.Components = SpecialPowers.Components;
testScope._TEST_FILE = uri;
// Output from head.js is fed, line by line, to this function. We
// send any such output back to the Java Robocop harness.
testScope.dump = function (str) {
let message = { type: "Robocop:JS",
innerType: "progress",
message: str,
};
sendMessageToJava(message);
};
// Populate test environment with test harness. The symbols defined
// above must be present before executing the test harness.
_evalURI(HEAD_JS, testScope);
return _evalURI(uri, testScope);
}