1 files changed, 69 insertions, 0 deletions
diff --git a/test/parallel/test-debugger-util-regression.js b/test/parallel/test-debugger-util-regression.js
new file mode 100644
index 00000000000..cf32ec3fa66
--- /dev/null
+++ b/test/parallel/test-debugger-util-regression.js
@@ -0,0 +1,69 @@
+'use strict';
+const path = require('path');
+const spawn = require('child_process').spawn;
+const assert = require('assert');
+
+const common = require('../common');
+
+const fixture = path.join(
+  common.fixturesDir,
+  'debugger-util-regression-fixture.js'
+);
+
+const args = [
+  'debug',
+  fixture
+];
+
+const proc = spawn(process.execPath, args, { stdio: 'pipe' });
+proc.stdout.setEncoding('utf8');
+proc.stderr.setEncoding('utf8');
+
+function fail() {
+  common.fail('the program should not hang');
+}
+
+const timer = setTimeout(fail, common.platformTimeout(4000));
+
+let stdout = '';
+let stderr = '';
+
+let nextCount = 0;
+
+proc.stdout.on('data', (data) => {
+  stdout += data;
+  if (stdout.includes('> 1') && nextCount < 1 ||
+      stdout.includes('> 2') && nextCount < 2 ||
+      stdout.includes('> 3') && nextCount < 3 ||
+      stdout.includes('> 4') && nextCount < 4) {
+    nextCount++;
+    proc.stdin.write('n\n');
+  }
+  else if (stdout.includes('{ a: \'b\' }')) {
+    clearTimeout(timer);
+    proc.stdin.write('.exit\n');
+  }
+  else if (stdout.includes('program terminated')) {
+    // Catch edge case present in v4.x
+    // process will terminate after call to util.inspect
+    common.fail('the program should not terminate');
+  }
+});
+
+proc.stderr.on('data', (data) => stderr += data);
+
+// FIXME
+// This test has been periodically failing on certain systems due to
+// uncaught errors on proc.stdin. This will stop the process from
+// exploding but is still not an elegant solution. Likely a deeper bug
+// causing this problem.
+proc.stdin.on('error', (err) => {
+  console.error(err);
+});
+
+process.on('exit', (code) => {
+  assert.equal(code, 0, 'the program should exit cleanly');
+  assert.equal(stdout.includes('{ a: \'b\' }'), true,
+      'the debugger should print the result of util.inspect');
+  assert.equal(stderr, '', 'stderr should be empty');
+});