test: refactor test-child-process-send-type-error

Trott · MylesBorins · commit bd8574cceefc · 2017-08-15T20:57:32.000-07:00
* Add exit listener to child process to check return code. Previously, child process faiilure would not cause the test to fail. * Use common.mustNotCall() to guarantee callback is not invoked. * Insert blank line per test writing guide. PR-URL: #13904 Reviewed-By: Colin Ihrig <cjihrig@gmail.com> Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Refael Ackermann <refack@gmail.com>
diff --git a/test/parallel/test-child-process-send-type-error.js b/test/parallel/test-child-process-send-type-error.js
@@ -1,10 +1,9 @@
 'use strict';
-require('../common');
+const common = require('../common');
+
 const assert = require('assert');
 const cp = require('child_process');
 
-function noop() {}
-
 function fail(proc, args) {
   assert.throws(() => {
     proc.send.apply(proc, args);
@@ -13,13 +12,18 @@ function fail(proc, args) {
 
 let target = process;
 
-if (process.argv[2] !== 'child')
+if (process.argv[2] !== 'child') {
   target = cp.fork(__filename, ['child']);
+  target.on('exit', common.mustCall((code, signal) => {
+    assert.strictEqual(code, 0);
+    assert.strictEqual(signal, null);
+  }));
+}
 
 fail(target, ['msg', null, null]);
 fail(target, ['msg', null, '']);
 fail(target, ['msg', null, 'foo']);
 fail(target, ['msg', null, 0]);
 fail(target, ['msg', null, NaN]);
 fail(target, ['msg', null, 1]);
-fail(target, ['msg', null, null, noop]);
+fail(target, ['msg', null, null, common.mustNotCall()]);
