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test: fix test-sync-io-option

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This test was failing occasionally both locally and on CI. Switched
from using spawn to execFile for a more reliable test.

Fixes: https://github.com/nodejs/io.js/issues/1837
PR-URL: https://github.com/nodejs/io.js/pull/1840
Reviewed-By: Roman Reiss <me@silverwind.io>
Reviewed-By: Trevor Norris <trev.norris@gmail.com>
This commit is contained in:
Evan Lucas 2015-05-29 15:08:16 -05:00
parent 4ed25f664d
commit 43a82f8a71
1 changed files with 14 additions and 26 deletions
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40
test/parallel/test-sync-io-option.js
View File

@ -1,8 +1,7 @@
'use strict';
const assert = require('assert');
const spawn = require('child_process').spawn;
const execFile = require('child_process').execFile;
if (process.argv[2] === 'child') {
setImmediate(function() {
@ -14,34 +13,23 @@ if (process.argv[2] === 'child') {
(function runTest(flags) {
var execArgv = [flags.pop()];
var args = [__filename, 'child'];
var child = spawn(process.execPath, execArgv.concat(args));
var stderr = '';
child.stdout.on('data', function(chunk) {
throw new Error('UNREACHABLE');
});
child.stderr.on('data', function(chunk) {
stderr += chunk.toString();
});
child.on('close', function() {
var cntr1 = (stderr.match(/WARNING/g) || []).length;
var cntr2 = (stderr.match(/fs\.readFileSync/g) || []).length;
assert.equal(cntr1, cntr2);
if (execArgv[0] === '--trace-sync-io') {
// Prints 4 WARNINGS for --trace-sync-io. 1 for each sync call
// inside readFileSync
assert.equal(cntr1, 4);
} else if (execArgv[0] === ' ') {
assert.equal(cntr1, 0);
var cntr = 0;
args = execArgv.concat(args);
if (!args[0]) args.shift();
execFile(process.execPath, args, function(err, stdout, stderr) {
assert.equal(err, null);
assert.equal(stdout, '');
if (/^WARNING[\s\S]*fs\.readFileSync/.test(stderr))
cntr++;
if (args[0] === '--trace-sync-io') {
assert.equal(cntr, 1);
} else if (args[0] === __filename) {
assert.equal(cntr, 0);
} else {
throw new Error('UNREACHABLE');
}
if (flags.length > 0)
setImmediate(runTest, flags);
});
}(['--trace-sync-io', ' ']));
}(['--trace-sync-io', '']));
}