Adding test for bug in stdio.

http://groups.google.com/group/nodejs/browse_thread/thread/10fda8eaf7276642/e5d5147f2b666abd

test/mjsunit/fixtures/echo.js

@@ -0,0 +1,5 @@
+process.mixin(require("../common"));
+process.stdio.open();
+process.stdio.addListener("data", function (data) {
+  puts(data);
+});

test/mjsunit/test-readdir.js

@@ -7,9 +7,18 @@ puts("readdir " + fixturesDir);
 
 promise.addCallback(function (files) {
   p(files);
-  assert.deepEqual(["a.js", "b","cycles", "multipart.js",
-    "nested-index","test_ca.pem",
-    "test_cert.pem", "test_key.pem", "throws_error.js", "x.txt"], files.sort());
+  assert.deepEqual(['a.js'
+                   , 'b'
+                   , 'cycles'
+                   , 'echo.js'
+                   , 'multipart.js'
+                   , 'nested-index'
+                   , 'test_ca.pem'
+                   , 'test_cert.pem'
+                   , 'test_key.pem'
+                   , 'throws_error.js'
+                   , 'x.txt'
+                   ], files.sort());
 });
 
 promise.addErrback(function () {

test/mjsunit/test-stdio.js

@@ -0,0 +1,21 @@
+process.mixin(require("./common"));
+
+var sub = path.join(fixturesDir, 'echo.js');
+
+var result = false;
+ 
+var child = process.createChildProcess(path.join(libDir, "../bin/node"), [sub]);
+child.addListener("error", function (data){
+  puts("parent stderr: " + data);
+});
+child.addListener("output", function (data){
+  if (data && data[0] == 't') {
+    result = true;
+  }
+});
+setTimeout(function () {
+  child.write('t\r\n');
+}, 100);
+setTimeout(function (){
+  assert.ok(result);
+}, 500)