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|
<!DOCTYPE html>
<!--
Copyright (c) 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.
-->
<link rel="import" href="/tracing/base/event.html">
<link rel="import" href="/tracing/base/event_target.html">
<link rel="import" href="/tracing/base/unittest/test_suite.html">
<link rel="import" href="/tracing/base/utils.html">
<link rel="import" href="/tracing/base/xhr.html">
<script>
'use strict';
tr.exportTo('tr.b.unittest', function() {
function HTMLImportsModuleLoader() {
}
HTMLImportsModuleLoader.prototype = {
loadModule(testRelpath, moduleName) {
return new Promise(function(resolve, reject) {
const importEl = document.createElement('link');
importEl.moduleName = moduleName;
Polymer.dom(importEl).setAttribute('rel', 'import');
Polymer.dom(importEl).setAttribute('href', testRelpath);
importEl.addEventListener('load', function() {
resolve({testRelpath,
moduleName});
});
importEl.addEventListener('error', function(e) {
reject('Error loading <link rel="import" href="' +
testRelpath + '"');
});
Polymer.dom(tr.doc.head).appendChild(importEl);
});
},
getCurrentlyExecutingModuleName() {
if (!document.currentScript) {
throw new Error('Cannot call testSuite except during load.');
}
try {
throw new Error('');
} catch (e) {
const stack = e.stack.split('\n');
let url = stack[stack.length - 1].slice(7);
url = url.slice(0, url.lastIndexOf(':'));
url = url.slice(0, url.lastIndexOf(':')); // Yes, again.
return this.guessModuleNameFromURL_(url);
}
},
guessModuleNameFromURL_(url) {
const m = /.+?:\/\/.+?(\/.+)/.exec(url);
if (!m) {
throw new Error('Guessing module name failed');
}
const path = m[1];
if (path[0] !== '/') {
throw new Error('malformed path');
}
const i = path.indexOf('.html');
if (i < 0) {
throw new Error('Cannot define testSuites outside html imports');
}
return path.substring(1, i).split('/').join('.');
}
};
function HeadlessModuleLoader() {
this.currentlyExecutingModuleInfo_ = undefined;
}
HeadlessModuleLoader.prototype = {
loadModule(testRelpath, moduleName) {
return Promise.resolve().then(function() {
const moduleInfo = {
testRelpath,
moduleName
};
if (this.currentlyExecutingModuleInfo_ !== undefined) {
throw new Error('WAT');
}
this.currentlyExecutingModuleInfo_ = moduleInfo;
try {
loadHTML(testRelpath);
} catch (e) {
e.message = 'While loading ' + moduleName + ', ' + e.message;
e.stack = 'While loading ' + moduleName + ', ' + e.stack;
throw e;
} finally {
this.currentlyExecutingModuleInfo_ = undefined;
}
return moduleInfo;
}.bind(this));
},
getCurrentlyExecutingModuleName() {
if (this.currentlyExecutingModuleInfo_ === undefined) {
throw new Error('No currently loading module');
}
return this.currentlyExecutingModuleInfo_.moduleName;
}
};
function SuiteLoader(suiteRelpathsToLoad) {
tr.b.EventTarget.call(this);
this.currentModuleLoader_ = undefined;
this.testSuites = [];
if (tr.isHeadless) {
this.currentModuleLoader_ = new HeadlessModuleLoader();
} else {
this.currentModuleLoader_ = new HTMLImportsModuleLoader();
}
this.allSuitesLoadedPromise = this.beginLoadingModules_(
suiteRelpathsToLoad);
}
SuiteLoader.prototype = {
__proto__: tr.b.EventTarget.prototype,
beginLoadingModules_(testRelpaths) {
// Hooks!
this.bindGlobalHooks_();
// Load the modules.
const modulePromises = [];
for (let i = 0; i < testRelpaths.length; i++) {
const testRelpath = testRelpaths[i];
const moduleName = testRelpath.split('/').slice(-1)[0];
const p = this.currentModuleLoader_.loadModule(testRelpath, moduleName);
modulePromises.push(p);
}
const allModulesLoadedPromise = new Promise(function(resolve, reject) {
let remaining = modulePromises.length;
let resolved = false;
function oneMoreLoaded() {
if (resolved) return;
remaining--;
if (remaining > 0) return;
resolved = true;
resolve();
}
function oneRejected(e) {
if (resolved) return;
resolved = true;
reject(e);
}
modulePromises.forEach(function(modulePromise) {
modulePromise.then(oneMoreLoaded, oneRejected);
});
});
// Script errors errors abort load;
const scriptErrorPromise = new Promise(function(xresolve, xreject) {
this.scriptErrorPromiseResolver_ = {
resolve: xresolve,
reject: xreject
};
}.bind(this));
const donePromise = Promise.race([
allModulesLoadedPromise,
scriptErrorPromise
]);
// Cleanup.
return donePromise.then(
function() {
this.scriptErrorPromiseResolver_ = undefined;
this.unbindGlobalHooks_();
}.bind(this),
function(e) {
this.scriptErrorPromiseResolver_ = undefined;
this.unbindGlobalHooks_();
throw e;
}.bind(this));
},
bindGlobalHooks_() {
if (global._currentSuiteLoader !== undefined) {
throw new Error('A suite loader exists already');
}
global._currentSuiteLoader = this;
this.oldGlobalOnError_ = global.onerror;
global.onerror = function(errorMsg, url, lineNumber) {
this.scriptErrorPromiseResolver_.reject(
new Error(errorMsg + '\n' + url + ':' + lineNumber));
if (this.oldGlobalOnError_) {
return this.oldGlobalOnError_(errorMsg, url, lineNumber);
}
return false;
}.bind(this);
},
unbindGlobalHooks_() {
global._currentSuiteLoader = undefined;
global.onerror = this.oldGlobalOnError_;
this.oldGlobalOnError_ = undefined;
},
constructAndRegisterTestSuite(suiteConstructor) {
const name = this.currentModuleLoader_.getCurrentlyExecutingModuleName();
const testSuite = new tr.b.unittest.TestSuite(
name, suiteConstructor);
this.testSuites.push(testSuite);
const e = new tr.b.Event('suite-loaded');
e.testSuite = testSuite;
this.dispatchEvent(e);
},
getAllTests() {
const tests = [];
this.testSuites.forEach(function(suite) {
tests.push.apply(tests, suite.tests);
});
return tests;
},
findTestWithFullyQualifiedName(fullyQualifiedName) {
for (let i = 0; i < this.testSuites.length; i++) {
const suite = this.testSuites[i];
for (let j = 0; j < suite.tests.length; j++) {
const test = suite.tests[j];
if (test.fullyQualifiedName === fullyQualifiedName) return test;
}
}
throw new Error('Test ' + fullyQualifiedName +
'not found amongst ' + this.testSuites.length);
}
};
return {
SuiteLoader,
};
});
</script>
|
