playwright/test/utils.js
2019-12-10 13:28:50 -08:00

263 lines
9.1 KiB
JavaScript

/**
* Copyright 2017 Google Inc. All rights reserved.
* Modifications copyright (c) Microsoft Corporation.
*
* Licensed under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
const fs = require('fs');
const path = require('path');
const {FlakinessDashboard} = require('../utils/flakiness-dashboard');
const PROJECT_ROOT = fs.existsSync(path.join(__dirname, '..', 'package.json')) ? path.join(__dirname, '..') : path.join(__dirname, '..', '..');
const COVERAGE_TESTSUITE_NAME = '**API COVERAGE**';
/**
* @param {Map<string, boolean>} apiCoverage
* @param {Object} events
* @param {string} className
* @param {!Object} classType
*/
function traceAPICoverage(apiCoverage, events, className, classType) {
className = className.substring(0, 1).toLowerCase() + className.substring(1);
for (const methodName of Reflect.ownKeys(classType.prototype)) {
const method = Reflect.get(classType.prototype, methodName);
if (methodName === 'constructor' || typeof methodName !== 'string' || methodName.startsWith('_') || typeof method !== 'function')
continue;
apiCoverage.set(`${className}.${methodName}`, false);
Reflect.set(classType.prototype, methodName, function(...args) {
apiCoverage.set(`${className}.${methodName}`, true);
return method.call(this, ...args);
});
}
if (events[classType.name]) {
for (const event of Object.values(events[classType.name])) {
if (typeof event !== 'symbol')
apiCoverage.set(`${className}.emit(${JSON.stringify(event)})`, false);
}
const method = Reflect.get(classType.prototype, 'emit');
Reflect.set(classType.prototype, 'emit', function(event, ...args) {
if (typeof event !== 'symbol' && this.listenerCount(event))
apiCoverage.set(`${className}.emit(${JSON.stringify(event)})`, true);
return method.call(this, event, ...args);
});
}
}
const utils = module.exports = {
recordAPICoverage: function(testRunner, api, events) {
const coverage = new Map();
for (const [className, classType] of Object.entries(api))
traceAPICoverage(coverage, events, className, classType);
testRunner.describe(COVERAGE_TESTSUITE_NAME, () => {
testRunner.it('should call all API methods', () => {
const missingMethods = [];
for (const method of coverage.keys()) {
if (!coverage.get(method))
missingMethods.push(method);
}
if (missingMethods.length)
throw new Error('Certain API Methods are not called: ' + missingMethods.join(', '));
});
});
},
/**
* @return {string}
*/
projectRoot: function() {
return PROJECT_ROOT;
},
/**
* @param {!Page} page
* @param {string} frameId
* @param {string} url
* @return {!Playwright.Frame}
*/
attachFrame: async function(page, frameId, url) {
const frames = new Set(page.frames());
const handle = await page.evaluateHandle(attachFrame, frameId, url);
try {
return await handle.asElement().contentFrame();
} catch(e) {
// we might not support contentFrame, but this can still work ok.
for (const frame of page.frames()) {
if (!frames.has(frame))
return frame;
}
}
return null;
async function attachFrame(frameId, url) {
const frame = document.createElement('iframe');
frame.src = url;
frame.id = frameId;
document.body.appendChild(frame);
// TODO(einbinder) do this right
// Access a scriptable global object to ensure JS context is
// initialized. WebKit will create it lazily only as need be.
frame.contentWindow;
await new Promise(x => frame.onload = x);
return frame;
}
},
isFavicon: function(request) {
return request.url().includes('favicon.ico');
},
/**
* @param {!Page} page
* @param {string} frameId
*/
detachFrame: async function(page, frameId) {
await page.evaluate(detachFrame, frameId);
function detachFrame(frameId) {
const frame = document.getElementById(frameId);
frame.remove();
}
},
/**
* @param {!Page} page
* @param {string} frameId
* @param {string} url
*/
navigateFrame: async function(page, frameId, url) {
await page.evaluate(navigateFrame, frameId, url);
function navigateFrame(frameId, url) {
const frame = document.getElementById(frameId);
frame.src = url;
return new Promise(x => frame.onload = x);
}
},
/**
* @param {!Frame} frame
* @param {string=} indentation
* @return {Array<string>}
*/
dumpFrames: function(frame, indentation) {
indentation = indentation || '';
let description = frame.url().replace(/:\d{4}\//, ':<PORT>/');
if (frame.name())
description += ' (' + frame.name() + ')';
const result = [indentation + description];
const childFrames = frame.childFrames();
childFrames.sort((a, b) => {
if (a.url() !== b.url())
return a.url() < b.url() ? -1 : 1;
return a.name() < b.name() ? -1 : 1;
});
for (const child of childFrames)
result.push(...utils.dumpFrames(child, ' ' + indentation));
return result;
},
/**
* @param {!EventEmitter} emitter
* @param {string} eventName
* @return {!Promise<!Object>}
*/
waitEvent: function(emitter, eventName, predicate = () => true) {
return new Promise(fulfill => {
emitter.on(eventName, function listener(event) {
if (!predicate(event))
return;
emitter.removeListener(eventName, listener);
fulfill(event);
});
});
},
initializeFlakinessDashboardIfNeeded: async function(testRunner) {
// Generate testIDs for all tests and verify they don't clash.
// This will add |test.testId| for every test.
//
// NOTE: we do this on CI's so that problems arise on PR trybots.
if (process.env.CI)
generateTestIDs(testRunner);
// FLAKINESS_DASHBOARD_PASSWORD is an encrypted/secured variable.
// Encrypted variables get a special treatment in CI's when handling PRs so that
// secrets are not leaked to untrusted code.
// - AppVeyor DOES NOT decrypt secured variables for PRs
// - Travis DOES NOT decrypt encrypted variables for PRs
// - Cirrus CI DOES NOT decrypt encrypted variables for PRs *unless* PR is sent
// from someone who has WRITE ACCESS to the repo.
//
// Since we don't want to run flakiness dashboard for PRs on all CIs, we
// check existance of FLAKINESS_DASHBOARD_PASSWORD and absense of
// CIRRUS_BASE_SHA env variables.
if (!process.env.FLAKINESS_DASHBOARD_PASSWORD || process.env.CIRRUS_BASE_SHA)
return;
const {sha, timestamp} = await FlakinessDashboard.getCommitDetails(__dirname, 'HEAD');
const dashboard = new FlakinessDashboard({
commit: {
sha,
timestamp,
url: `https://github.com/Microsoft/playwright/commit/${sha}`,
},
build: {
url: process.env.FLAKINESS_DASHBOARD_BUILD_URL,
},
dashboardRepo: {
url: 'https://github.com/aslushnikov/playwright-flakiness-dashboard.git',
username: 'playwright-flakiness',
email: 'aslushnikov+playwrightflakiness@gmail.com',
password: process.env.FLAKINESS_DASHBOARD_PASSWORD,
branch: process.env.FLAKINESS_DASHBOARD_NAME,
},
});
testRunner.on('testfinished', test => {
// Do not report tests from COVERAGE testsuite.
// They don't bring much value to us.
if (test.fullName.includes(COVERAGE_TESTSUITE_NAME))
return;
const testpath = test.location.filePath.substring(utils.projectRoot().length);
const url = `https://github.com/Microsoft/playwright/blob/${sha}/${testpath}#L${test.location.lineNumber}`;
dashboard.reportTestResult({
testId: test.testId,
name: test.location.fileName + ':' + test.location.lineNumber,
description: test.fullName,
url,
result: test.result,
});
});
testRunner.on('finished', async({result}) => {
dashboard.setBuildResult(result);
await dashboard.uploadAndCleanup();
});
function generateTestIDs(testRunner) {
const testIds = new Map();
for (const test of testRunner.tests()) {
const testIdComponents = [test.name];
for (let suite = test.suite; !!suite.parentSuite; suite = suite.parentSuite)
testIdComponents.push(suite.name);
testIdComponents.reverse();
const testId = testIdComponents.join('>');
const clashingTest = testIds.get(testId);
if (clashingTest)
throw new Error(`Two tests with clashing IDs: ${test.location.fileName}:${test.location.lineNumber} and ${clashingTest.location.fileName}:${clashingTest.location.lineNumber}`);
testIds.set(testId, test);
test.testId = testId;
}
}
},
};