Migrated several tests from blink to V8 repository.

test/webkit/function-prototype-descriptor.js

Index: test/webkit/function-prototype-descriptor.js
diff --git a/test/webkit/concat-while-having-a-bad-time.js b/test/webkit/function-prototype-descriptor.js
similarity index 64%
copy from test/webkit/concat-while-having-a-bad-time.js
copy to test/webkit/function-prototype-descriptor.js
index dfda1e08a0b36194b787a44ee12a9693acd8aeaf..89a19e98bd21c544502da892002013f38173ec27 100644
--- a/test/webkit/concat-while-having-a-bad-time.js
+++ b/test/webkit/function-prototype-descriptor.js
@@ -22,10 +22,28 @@
 // SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 description(
-"Tests the behavior of Array.prototype.concat while the array is having a bad time due to one of the elements we are concatenating."
+'Test for function.prototype\'s property descriptor.'
 );
 
-Object.defineProperty(Array.prototype, 0, { writable: false });
-shouldBe("[42].concat()", "[42]");
+function test(func)
+{
+    // test function.prototype has the correct attributes - writable, enumerable, non-configurable.
+    descriptor = Object.getOwnPropertyDescriptor(func, 'prototype');
+    shouldBeTrue("descriptor['writable']");
+    shouldBeFalse("descriptor['enumerable']");
+    shouldBeFalse("descriptor['configurable']");
+}
 
+// Test prototype's attributes are correct.
+function a() {}
+test(a);
 
+// Test prototype's attributes are correct, if assigned without first having being accessed.
+function b() {}
+b.prototype = {};
+test(b);
+
+// Given that prototype is non-configurable, defineProperty should not be able to assign a getter to it.
+function c() {}
+shouldThrow("Object.defineProperty(c, 'prototype', { get: function(){} })");
+test(c);