cmd: add a -i / --interactive flag to force the REPL

This is the only way to spawn a node child process in REPL mode, and will
also be needed to be able to use the REPL in MinTTY.

1 files changed, 44 insertions, 0 deletions

diff --git a/test/simple/test-force-repl.js b/test/simple/test-force-repl.js
new file mode 100644
index 0000000000..60ba3485bb
--- /dev/null
+++ b/test/simple/test-force-repl.js
@@ -0,0 +1,44 @@
+// Copyright Joyent, Inc. and other Node contributors.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a
+// copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to permit
+// persons to whom the Software is furnished to do so, subject to the
+// following conditions:
+//
+// The above copyright notice and this permission notice shall be included
+// in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
+// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+// USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+var common = require('../common');
+var assert = require('assert');
+var spawn = require('child_process').spawn;
+
+// spawn a node child process in "interactive" mode (force the repl)
+var cp = spawn(process.execPath, ['-i']);
+var gotToEnd = false;
+var timeoutId = setTimeout(function() {
+  throw new Error('timeout!');
+}, 1000); // give node + the repl 1 second to boot up
+
+cp.stdout.setEncoding('utf8');
+
+cp.stdout.once('data', function(b) {
+  clearTimeout(timeoutId);
+  assert.equal(b, '> ');
+  gotToEnd = true;
+  cp.kill();
+});
+
+process.on('exit', function() {
+  assert(gotToEnd);
+});