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profile.js
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profile.js
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'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.
var path = require('path');
var EventEmitter = require('events').EventEmitter;
var meow = require('meow');
var Promise = require('bluebird');
var pkgConf = require('pkg-conf');
var arrify = require('arrify');
var findCacheDir = require('find-cache-dir');
var uniqueTempDir = require('unique-temp-dir');
var CachingPrecompiler = require('./lib/caching-precompiler');
var globals = require('./lib/globals');
// 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();
var conf = pkgConf.sync('ava', {
defaults: {
babel: 'default'
}
});
// Define a minimal set of options from the main CLI.
var 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',
' --require, -r Module to preload (Can be repeated)',
''
], {
string: [
'_',
'require'
],
boolean: [
'fail-fast',
'verbose',
'serial',
'tap'
],
default: conf,
alias: {
r: 'require',
s: 'serial'
}
});
if (cli.input.length !== 1) {
throw new Error('Specify a test file');
}
var file = path.resolve(cli.input[0]);
var cacheDir = findCacheDir({
name: 'ava',
files: [file]
}) || uniqueTempDir();
var precompiled = {};
precompiled[file] = new CachingPrecompiler(cacheDir, conf.babel).precompileFile(file);
var opts = {
file: file,
failFast: cli.flags.failFast,
serial: cli.flags.serial,
require: arrify(cli.flags.require),
tty: false,
cacheDir: cacheDir,
precompiled: precompiled
};
var events = new EventEmitter();
var uncaughtExceptionCount = 0;
// Mock the behavior of a parent process.
process.send = function (data) {
if (data && data.ava) {
var 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', function (data) {
console.log('TEST:', data.title, data.error);
});
events.on('results', function (data) {
if (console.profileEnd) {
console.profileEnd();
}
console.log('RESULTS:', data.stats);
if (process.exit) {
// Delay is For Node 0.10 which emits uncaughtExceptions async.
setTimeout(function () {
process.exit(data.stats.failCount + uncaughtExceptionCount); // eslint-disable-line xo/no-process-exit
}, 20);
}
});
events.on('stats', function () {
setImmediate(function () {
process.emit('ava-run', {});
});
});
events.on('uncaughtException', function (data) {
uncaughtExceptionCount++;
var 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(function () {
require('./lib/test-worker');
});