angular-cn/aio/scripts/test-preview.js

123 lines
3.8 KiB
JavaScript

#!/usr/bin/env node
/**
* Usage:
* node scripts/test-preview <pr-number> <pr-last-sha> <min-pwa-score>
*
* Checks whether a PR will (eventually) have a (public) preview, waits for the preview to be
* available, and runs PWA tests against the preview.
*
* For PRs that are expected to have a preview, this script will fail if the preview is still not
* available after a pre-defined waiting period or if the PWA tests fail.
*/
// Imports
const {spawn} = require('child_process');
const {get: httpsGet} = require('https');
const {relative} = require('path');
// Input
const [prNumber, prLastSha, minPwaScore] = validateArgs(process.argv.slice(2));
// Variables
const aioBuildsDomain = 'ngbuilds.io';
const previewCheckInterval = 30000;
const previewCheckAttempts = 10;
const shortSha = prLastSha && prLastSha.slice(0, 7);
const previewabilityCheckUrl = `https://${aioBuildsDomain}/can-have-public-preview/${prNumber}`;
const previewUrl = `https://pr${prNumber}-${shortSha}.${aioBuildsDomain}/`;
// Check whether the PR can have a (public) preview.
get(previewabilityCheckUrl).
then(response => JSON.parse(response)).
then(({canHavePublicPreview, reason}) => {
// Nothing to do, if this PR can have no (public) preview.
if (canHavePublicPreview === false) {
reportNoPreview(reason);
return;
}
// There should be a preview. Wait for it to be available.
return poll(previewCheckInterval, previewCheckAttempts, () => get(previewUrl)).
// The preview is still not available after the specified waiting period.
catch(() => {
const totalSecs = Math.round((previewCheckInterval * previewCheckAttempts) / 1000);
throw new Error(`Preview still not available after ${totalSecs}s.`);
}).
// The preview is now available. Run the tests.
then(() => yarnRun('smoke-tests', previewUrl)).
then(() => yarnRun('test-pwa-score', previewUrl, minPwaScore));
}).
catch(onError);
// Helpers
function get(url) {
console.log(`GET ${url}`);
return new Promise((resolve, reject) => {
const onResponse = res => {
const statusCode = res.statusCode || -1;
const isSuccess = (200 <= statusCode) && (statusCode < 400);
let responseText = '';
res.
on('error', reject).
on('data', d => responseText += d).
on('end', () => isSuccess ?
resolve(responseText) :
reject(`Request to '${url}' failed (status: ${statusCode}): ${responseText}`));
};
httpsGet(url, onResponse).
on('error', reject);
});
}
function onError(err) {
console.error(err);
process.exit(1);
}
function poll(interval, attempts, checkCondition) {
return new Promise((resolve, reject) => {
if (!attempts) return reject();
checkCondition().
then(() => resolve()).
catch(() => wait(interval).
then(() => poll(interval, attempts - 1, checkCondition)).
then(resolve, reject));
});
}
function reportNoPreview(reason) {
console.log(`No (public) preview available. (Reason: ${reason})`);
}
function validateArgs(args) {
if (args.length !== 3) {
const relativeScriptPath = relative('.', __filename.replace(/\.js$/, ''));
const usageCmd = `node ${relativeScriptPath} <pr-number> <pr-last-sha> <min-pwa-score>`;
return onError(
`Invalid number of arguments (expected 3, found ${args.length}).\n` +
`Usage: ${usageCmd}`);
}
return args;
}
function wait(delay) {
console.log(`Waiting ${delay}ms...`);
return new Promise(resolve => setTimeout(resolve, delay));
}
function yarnRun(script, ...args) {
return new Promise((resolve, reject) => {
const spawnOptions = {cwd: __dirname, stdio: 'inherit'};
spawn('yarn', [script, ...args], spawnOptions).
on('error', reject).
on('exit', code => (code === 0 ? resolve : reject)());
});
}