wallet-core/node_modules/ava/profile.js
2017-05-28 00:40:43 +02:00

162 lines
3.7 KiB
JavaScript

'use strict';
// Iron-node does not work with forked processes
// This cli command will run a single file in the current process.
// Intended to be used with iron-node for profiling purposes.
const path = require('path');
const EventEmitter = require('events');
const meow = require('meow');
const Promise = require('bluebird');
const pkgConf = require('pkg-conf');
const findCacheDir = require('find-cache-dir');
const uniqueTempDir = require('unique-temp-dir');
const arrify = require('arrify');
const resolveCwd = require('resolve-cwd');
const babelConfigHelper = require('./lib/babel-config');
const CachingPrecompiler = require('./lib/caching-precompiler');
const globals = require('./lib/globals');
function resolveModules(modules) {
return arrify(modules).map(name => {
const modulePath = resolveCwd(name);
if (modulePath === null) {
throw new Error(`Could not resolve required module '${name}'`);
}
return modulePath;
});
}
// Chrome gets upset when the `this` value is non-null for these functions
globals.setTimeout = setTimeout.bind(null);
globals.clearTimeout = clearTimeout.bind(null);
Promise.longStackTraces();
const conf = pkgConf.sync('ava', {
defaults: {
babel: 'default'
}
});
// Define a minimal set of options from the main CLI
const cli = meow(`
Usage
$ iron-node node_modules/ava/profile.js <test-file>
Options
--fail-fast Stop after first test failure
--serial, -s Run tests serially
`, {
string: [
'_'
],
boolean: [
'fail-fast',
'verbose',
'serial',
'tap'
],
default: conf,
alias: {
s: 'serial'
}
});
if (cli.input.length !== 1) {
throw new Error('Specify a test file');
}
const file = path.resolve(cli.input[0]);
const cacheDir = findCacheDir({
name: 'ava',
files: [file]
}) || uniqueTempDir();
babelConfigHelper.build(process.cwd(), cacheDir, conf.babel, true)
.then(result => {
const precompiler = new CachingPrecompiler({
path: cacheDir,
getBabelOptions: result.getOptions,
babelCacheKeys: result.cacheKeys
});
const precompiled = {};
precompiled[file] = precompiler.precompileFile(file);
const opts = {
file,
failFast: cli.flags.failFast,
serial: cli.flags.serial,
tty: false,
cacheDir,
precompiled,
require: resolveModules(conf.require)
};
const events = new EventEmitter();
let uncaughtExceptionCount = 0;
// Mock the behavior of a parent process
process.channel = {ref() {}, unref() {}};
process.send = data => {
if (data && data.ava) {
const name = data.name.replace(/^ava-/, '');
if (events.listeners(name).length > 0) {
events.emit(name, data.data);
} else {
console.log('UNHANDLED AVA EVENT:', name, data.data);
}
return;
}
console.log('NON AVA EVENT:', data);
};
events.on('test', data => {
console.log('TEST:', data.title, data.error);
});
events.on('results', data => {
if (console.profileEnd) {
console.profileEnd();
}
console.log('RESULTS:', data.stats);
if (process.exit) {
process.exit(data.stats.failCount + uncaughtExceptionCount); // eslint-disable-line unicorn/no-process-exit
}
});
events.on('stats', () => {
setImmediate(() => {
process.emit('ava-run', {});
});
});
events.on('uncaughtException', data => {
uncaughtExceptionCount++;
let stack = data && data.exception && data.exception.stack;
stack = stack || data;
console.log(stack);
});
// `test-worker` will read process.argv[2] for options
process.argv[2] = JSON.stringify(opts);
process.argv.length = 3;
if (console.profile) {
console.profile('AVA test-worker process');
}
setImmediate(() => {
require('./lib/test-worker'); // eslint-disable-line import/no-unassigned-import
});
});