From 705940d205ebe8e796b85373b949c5f6bf300c6d Mon Sep 17 00:00:00 2001
From: Leonardo Balter <leonardo.balter@gmail.com>
Date: Tue, 12 Jan 2016 16:40:19 -0500
Subject: [PATCH] Add tests for Subclassing the built-in Proxy Object
---
.../subclassing/Proxy/no-prototype-throws.js | 32 +++++++++++++++++++
1 file changed, 32 insertions(+)
create mode 100644 test/language/subclassing/Proxy/no-prototype-throws.js
diff --git a/test/language/subclassing/Proxy/no-prototype-throws.js b/test/language/subclassing/Proxy/no-prototype-throws.js
new file mode 100644
index 0000000000..44859ca000
--- /dev/null
+++ b/test/language/subclassing/Proxy/no-prototype-throws.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: 14.5.14
+description: The Proxy Object is not subclasseable without a prototype
+info: >
+ 14.5.14 Runtime Semantics: ClassDefinitionEvaluation
+
+ 5. If ClassHeritageopt is not present, then
+ ...
+ 6. Else
+ ...
+ e. If superclass is null, then
+ ...
+ f. Else if IsConstructor(superclass) is false, throw a TypeError exception.
+ g. Else
+ ...
+ ii. Let protoParent be Get(superclass, "prototype").
+ iii. ReturnIfAbrupt(protoParent).
+ iv. If Type(protoParent) is neither Object nor Null, throw a TypeError exception.
+
+ 26.2.1 The Proxy Constructor
+
+ The Proxy constructor is the %Proxy% intrinsic object and the initial value of
+ the Proxy property of the global object. When called as a constructor it
+ creates and initializes a new proxy exotic object. Proxy is not intended to be
+ called as a function and will throw an exception when called in that manner.
+---*/
+
+assert.throws(TypeError, function() {
+ class P extends Proxy {}
+});
--
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