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var common = require('../common');
14 years ago
var assert = require('assert');
var assert = require('assert');
var spawn = require('child_process').spawn;
var path = require('path');
var fs = require('fs');
function fixtPath(p) {
return path.join(common.fixturesDir, p);
}
var expected = 'hello world';
// Test the equivalent of:
// $ /bin/echo 'hello world' > hello.txt
var helloPath = fixtPath('hello.txt');
function test1(next) {
console.log('Test 1...');
fs.open(helloPath, 'w', 400, function(err, fd) {
if (err) throw err;
var child = spawn('/bin/echo', [expected], {customFds: [-1, fd]});
assert.notEqual(child.stdin, null);
assert.equal(child.stdout, null);
assert.notEqual(child.stderr, null);
child.addListener('exit', function(err) {
if (err) throw err;
fs.close(fd, function(error) {
if (error) throw error;
fs.readFile(helloPath, function(err, data) {
if (err) throw err;
assert.equal(data.toString(), expected + '\n');
console.log(' File was written.');
next(test3);
});
});
});
});
}
// Test the equivalent of:
// $ node ../fixture/stdio-filter.js < hello.txt
function test2(next) {
console.log('Test 2...');
fs.open(helloPath, 'r', undefined, function(err, fd) {
var child = spawn(process.argv[0],
[fixtPath('stdio-filter.js'), 'o', 'a'],
{customFds: [fd, -1, -1]});
assert.equal(child.stdin, null);
var actualData = '';
child.stdout.addListener('data', function(data) {
actualData += data.toString();
});
child.addListener('exit', function(code) {
if (err) throw err;
assert.equal(actualData, 'hella warld\n');
console.log(' File was filtered successfully');
fs.close(fd, function() {
next(test3);
});
});
});
}
// Test the equivalent of:
// $ /bin/echo 'hello world' | ../stdio-filter.js a o
function test3(next) {
console.log('Test 3...');
var filter = spawn(process.argv[0], [fixtPath('stdio-filter.js'), 'o', 'a']);
var echo = spawn('/bin/echo', [expected], {customFds: [-1, filter.fds[0]]});
var actualData = '';
filter.stdout.addListener('data', function(data) {
console.log(' Got data --> ' + data);
actualData += data;
});
filter.addListener('exit', function(code) {
if (code) throw 'Return code was ' + code;
assert.equal(actualData, 'hella warld\n');
console.log(' Talked to another process successfully');
});
echo.addListener('exit', function(code) {
if (code) throw 'Return code was ' + code;
filter.stdin.end();
fs.unlinkSync(helloPath);
});
}
test1(test2);