cmd: support dash as stdin alias

PR-URL: https://github.com/nodejs/node/pull/13012
Reviewed-By: Jeremiah Senkpiel <fishrock123@rocketmail.com>
Reviewed-By: Refael Ackermann <refack@gmail.com>
Reviewed-By: Gibson Fahnestock <gibfahn@gmail.com>

1 files changed, 25 insertions, 24 deletions

diff --git a/test/parallel/test-stdin-script-child.js b/test/parallel/test-stdin-script-child.js
index 81eb3ea5b4..d3d22a9a82 100644
--- a/test/parallel/test-stdin-script-child.js
+++ b/test/parallel/test-stdin-script-child.js
@@ -2,31 +2,32 @@
 const common = require('../common');
 const assert = require('assert');
 
-const spawn = require('child_process').spawn;
-const child = spawn(process.execPath, [], {
-  env: Object.assign(process.env, {
-    NODE_DEBUG: process.argv[2]
-  })
-});
-const wanted = `${child.pid}\n`;
-let found = '';
+const { spawn } = require('child_process');
+for (const args of [[], ['-']]) {
+  const child = spawn(process.execPath, args, {
+    env: Object.assign(process.env, {
+      NODE_DEBUG: process.argv[2]
+    })
+  });
+  const wanted = `${child.pid}\n`;
+  let found = '';
 
-child.stdout.setEncoding('utf8');
-child.stdout.on('data', function(c) {
-  found += c;
-});
+  child.stdout.setEncoding('utf8');
+  child.stdout.on('data', function(c) {
+    found += c;
+  });
 
-child.stderr.setEncoding('utf8');
-child.stderr.on('data', function(c) {
-  console.error(`> ${c.trim().split(/\n/).join('\n> ')}`);
-});
+  child.stderr.setEncoding('utf8');
+  child.stderr.on('data', function(c) {
+    console.error(`> ${c.trim().split(/\n/).join('\n> ')}`);
+  });
 
-child.on('close', common.mustCall(function(c) {
-  assert.strictEqual(c, 0);
-  assert.strictEqual(found, wanted);
-  console.log('ok');
-}));
+  child.on('close', common.mustCall(function(c) {
+    assert.strictEqual(c, 0);
+    assert.strictEqual(found, wanted);
+  }));
 
-setTimeout(function() {
-  child.stdin.end('console.log(process.pid)');
-}, 1);
+  setTimeout(function() {
+    child.stdin.end('console.log(process.pid)');
+  }, 1);
+}