1 files changed, 62 insertions, 0 deletions
diff --git a/js/src/tests/test262/harness/nativeFunctionMatcher.js b/js/src/tests/test262/harness/nativeFunctionMatcher.js
new file mode 100644
index 0000000000..f5903aa710
--- /dev/null
+++ b/js/src/tests/test262/harness/nativeFunctionMatcher.js
@@ -0,0 +1,62 @@
+// Copyright (C) 2016 Michael Ficarra. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+description: >
+    Ensure that the regular expression generally distinguishes between valid
+    and invalid forms of the NativeFunction grammar production.
+includes: [nativeFunctionMatcher.js]
+---*/
+
+[
+  'function(){[native code]}',
+  'function(){ [native code] }',
+  'function ( ) { [ native code ] }',
+  'function a(){ [native code] }',
+  'function a(){ /* } */ [native code] }',
+  `function a() {
+    // test
+    [native code]
+    /* test */
+  }`,
+  'function(a, b = function() { []; }) { [native code] }',
+  'function [Symbol.xyz]() { [native code] }',
+  'function [x[y][z[d]()]]() { [native code] }',
+  'function ["]"] () { [native code] }',
+  'function [\']\'] () { [native code] }',
+  '/* test */ function() { [native code] }',
+  'function() { [native code] } /* test */',
+  'function() { [native code] } // test',
+].forEach((s) => {
+  try {
+    validateNativeFunctionSource(s);
+  } catch (unused) {
+    throw new Error(`${JSON.stringify(s)} should pass`);
+  }
+});
+
+[
+  'native code',
+  'function() {}',
+  'function(){ "native code" }',
+  'function(){ [] native code }',
+  'function()) { [native code] }',
+  'function(() { [native code] }',
+  'function []] () { [native code] }',
+  'function [[] () { [native code] }',
+  'function ["]] () { [native code] }',
+  'function [\']] () { [native code] }',
+  'function() { [native code] /* }',
+  '// function() { [native code] }',
+].forEach((s) => {
+  let fail = false;
+  try {
+    validateNativeFunctionSource(s);
+    fail = true;
+  } catch (unused) {}
+  if (fail) {
+    throw new Error(`${JSON.stringify(s)} should fail`);
+  }
+});
+
+reportCompare(0, 0);