add test cases for shell option to exec/execSync

test/parallel/test-child-process-exec-enforce-shell.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.
+
+'use strict';
+const common = require('../common');
+const assert = require('assert');
+const { exec, execSync } = require('child_process');
+
+const invalidArgTypeError = {
+  code: 'ERR_INVALID_ARG_TYPE',
+  name: 'TypeError'
+};
+
+exec('echo should-be-passed-as-argument', { shell: '' }, common.mustSucceed((stdout, stderr) => {
+  assert.ok(stdout.contains('should-be-passed-as-argument'));
+  assert.ok(!stderr);
+}));
+
+{
+  const ret = execSync('echo should-be-passed-as-argument', { encoding: 'utf-8', shell: '' });
+  assert.ok(ret.contains('should-be-passed-as-argument'));
+}
+
+for (const fn of [exec, execSync]) {
+  assert.throws(() => fn('should-throw-on-boolean-shell-option', { shell: false }), invalidArgTypeError);
+}