test: add stdin writable regression test

Make sure that `process.stdin.write()`, and in particular ending the stream, works.
nodejs · addaleax · Sep 24, 2018 · Sep 24, 2018 · Sep 24, 2018 · Sep 24, 2018
commit c39c8ac8cb5afd8320e50424c6f40dddef4e9555
diff --git a/test/pseudo-tty/test-stdin-write.js b/test/pseudo-tty/test-stdin-write.js
@@ -0,0 +1,3 @@
+'use strict';
+require('../common');
+process.stdin.end('foobar\n');
diff --git a/test/pseudo-tty/test-stdin-write.out b/test/pseudo-tty/test-stdin-write.out
@@ -0,0 +1 @@
+foobar