From fc160c78ad3bb92996e73aca8e39b37daca0296d Mon Sep 17 00:00:00 2001
From: Leonardo Balter <leonardo.balter@gmail.com>
Date: Mon, 11 Jan 2016 15:22:36 -0500
Subject: [PATCH] Add tests for Subclassing the built-in RegExp Objects
---
test/language/subclassing/RegExp/lastIndex.js | 26 +++++++++++++++
.../subclassing/RegExp/regular-subclassing.js | 23 +++++++++++++
.../RegExp/super-must-be-called.js | 32 +++++++++++++++++++
3 files changed, 81 insertions(+)
create mode 100644 test/language/subclassing/RegExp/lastIndex.js
create mode 100644 test/language/subclassing/RegExp/regular-subclassing.js
create mode 100644 test/language/subclassing/RegExp/super-must-be-called.js
diff --git a/test/language/subclassing/RegExp/lastIndex.js b/test/language/subclassing/RegExp/lastIndex.js
new file mode 100644
index 0000000000..2e2a05e4c8
--- /dev/null
+++ b/test/language/subclassing/RegExp/lastIndex.js
@@ -0,0 +1,26 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+es6id: 21.2.6.1
+description: Instances has the own property lastIndex
+info: >
+ 21.2.6.1 lastIndex
+
+ The value of the lastIndex property specifies the String index at which to
+ start the next match. It is coerced to an integer when used (see 21.2.5.2.2).
+ This property shall have the attributes { [[Writable]]: true, [[Enumerable]]:
+ false, [[Configurable]]: false }.
+includes: [propertyHelper.js]
+---*/
+
+class RE extends RegExp {}
+
+var re = new RE('39?');
+
+re.exec('TC39');
+
+assert.sameValue(re.lastIndex, 0);
+
+verifyWritable(re, 'lastIndex');
+verifyNotEnumerable(re, 'lastIndex');
+verifyNotConfigurable(re, 'lastIndex');
\ No newline at end of file
diff --git a/test/language/subclassing/RegExp/regular-subclassing.js b/test/language/subclassing/RegExp/regular-subclassing.js
new file mode 100644
index 0000000000..37245ba966
--- /dev/null
+++ b/test/language/subclassing/RegExp/regular-subclassing.js
@@ -0,0 +1,23 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+es6id: 21.2.3
+description: Subclassing the RegExp object
+info: >
+ 21.2.3 The RegExp Constructor
+
+ ...
+
+ The RegExp constructor is designed to be subclassable. It may be used as the
+ value of an extends clause of a class definition. Subclass constructors that
+ intend to inherit the specified RegExp behaviour must include a super call to
+ the RegExp constructor to create and initialize subclass instances with the
+ necessary internal slots.
+---*/
+
+class RE extends RegExp {}
+
+var re = new RE(39);
+
+assert.sameValue(re.test('TC39'), true);
+assert.sameValue(re.test('42'), false);
diff --git a/test/language/subclassing/RegExp/super-must-be-called.js b/test/language/subclassing/RegExp/super-must-be-called.js
new file mode 100644
index 0000000000..30c067d91d
--- /dev/null
+++ b/test/language/subclassing/RegExp/super-must-be-called.js
@@ -0,0 +1,32 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+es6id: 21.2.3
+description: Super need to be called to initialize internals
+info: >
+ 21.2.3 The RegExp Constructor
+
+ ...
+
+ The RegExp constructor is designed to be subclassable. It may be used as the
+ value of an extends clause of a class definition. Subclass constructors that
+ intend to inherit the specified RegExp behaviour must include a super call to
+ the RegExp constructor to create and initialize subclass instances with the
+ necessary internal slots.
+---*/
+
+class RE1 extends RegExp {
+ constructor() {}
+}
+
+assert.throws(ReferenceError, function() {
+ new RE1();
+});
+
+class RE2 extends RegExp {
+ constructor() {
+ super();
+ }
+}
+
+new RE2();
--
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