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require("../common");
var assert = require('assert');
var spawn = require('child_process').spawn;
var path = require('path');
var fs = require('fs');
var sys = require('sys');
function fixtPath(p) {
return path.join(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], undefined, [-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']
, undefined, [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], undefined, [-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);
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