Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

42 files changed, 861 insertions, 0 deletions

diff --git a/js/src/tests/test262/built-ins/Object/preventExtensions/15.2.3.10-0-1.js b/js/src/tests/test262/built-ins/Object/preventExtensions/15.2.3.10-0-1.js
new file mode 100644
index 0000000000..c01efa70d6
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Object/preventExtensions/15.2.3.10-0-1.js
@@ -0,0 +1,13 @@
+// Copyright (c) 2012 Ecma International.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+es5id: 15.2.3.10-0-1
+description: Object.preventExtensions must exist as a function
+---*/
+
+var f = Object.preventExtensions;
+
+assert.sameValue(typeof(f), "function", 'typeof(f)');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/preventExtensions/15.2.3.10-0-2.js b/js/src/tests/test262/built-ins/Object/preventExtensions/15.2.3.10-0-2.js
new file mode 100644
index 0000000000..f1dbaa35ea
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Object/preventExtensions/15.2.3.10-0-2.js
@@ -0,0 +1,13 @@
+// Copyright (c) 2012 Ecma International.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+es5id: 15.2.3.10-0-2
+description: >
+    Object.preventExtensions must exist as a function taking 1
+    parameter
+---*/
+
+assert.sameValue(Object.preventExtensions.length, 1, 'Object.preventExtensions.length');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/preventExtensions/15.2.3.10-1-1.js b/js/src/tests/test262/built-ins/Object/preventExtensions/15.2.3.10-1-1.js
new file mode 100644
index 0000000000..25426b1b88
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Object/preventExtensions/15.2.3.10-1-1.js
@@ -0,0 +1,13 @@
+// Copyright (c) 2012 Ecma International.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+es5id: 15.2.3.10-1-1
+description: >
+    Object.preventExtensions does not throw TypeError if 'O' is
+    undefined
+---*/
+
+Object.preventExtensions(undefined);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/preventExtensions/15.2.3.10-1-2.js b/js/src/tests/test262/built-ins/Object/preventExtensions/15.2.3.10-1-2.js
new file mode 100644
index 0000000000..bac4c4e914
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Object/preventExtensions/15.2.3.10-1-2.js
@@ -0,0 +1,11 @@
+// Copyright (c) 2012 Ecma International.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+es5id: 15.2.3.10-1-2
+description: Object.preventExtensions does not throw TypeError if 'O' is null
+---*/
+
+Object.preventExtensions(null);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/preventExtensions/15.2.3.10-1-3.js b/js/src/tests/test262/built-ins/Object/preventExtensions/15.2.3.10-1-3.js
new file mode 100644
index 0000000000..d765ba8cf7
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Object/preventExtensions/15.2.3.10-1-3.js
@@ -0,0 +1,13 @@
+// Copyright (c) 2012 Ecma International.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+es5id: 15.2.3.10-1-3
+description: >
+    Object.preventExtensions does not throw TypeError if 'O' is a
+    boolean primitive value
+---*/
+
+Object.preventExtensions(true);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/preventExtensions/15.2.3.10-1-4.js b/js/src/tests/test262/built-ins/Object/preventExtensions/15.2.3.10-1-4.js
new file mode 100644
index 0000000000..1ffbf1e9be
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Object/preventExtensions/15.2.3.10-1-4.js
@@ -0,0 +1,13 @@
+// Copyright (c) 2012 Ecma International.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+es5id: 15.2.3.10-1-4
+description: >
+    Object.preventExtensions does not throw TypeError if 'O' is a
+    string primitive value
+---*/
+
+Object.preventExtensions("abc");
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/preventExtensions/15.2.3.10-1.js b/js/src/tests/test262/built-ins/Object/preventExtensions/15.2.3.10-1.js
new file mode 100644
index 0000000000..64f566f7dd
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Object/preventExtensions/15.2.3.10-1.js
@@ -0,0 +1,13 @@
+// Copyright (c) 2012 Ecma International.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+es5id: 15.2.3.10-1
+description: >
+    Object.preventExtensions does not throw TypeError if type of first
+    param is not Object
+---*/
+
+Object.preventExtensions(0);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/preventExtensions/15.2.3.10-2-1.js b/js/src/tests/test262/built-ins/Object/preventExtensions/15.2.3.10-2-1.js
new file mode 100644
index 0000000000..b0d64ba6e1
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Object/preventExtensions/15.2.3.10-2-1.js
@@ -0,0 +1,26 @@
+// Copyright (c) 2012 Ecma International.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+es5id: 15.2.3.10-2-1
+description: >
+    Object.preventExtensions - repeated calls to preventExtensions
+    have no side effects
+---*/
+
+var obj = {};
+var testResult1 = true;
+var testResult2 = true;
+
+var preCheck = Object.isExtensible(obj);
+
+Object.preventExtensions(obj);
+testResult1 = Object.isExtensible(obj);
+Object.preventExtensions(obj);
+testResult2 = Object.isExtensible(obj);
+
+assert(preCheck, 'preCheck !== true');
+assert.sameValue(testResult1, false, 'testResult1');
+assert.sameValue(testResult2, false, 'testResult2');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/preventExtensions/15.2.3.10-2.js b/js/src/tests/test262/built-ins/Object/preventExtensions/15.2.3.10-2.js
new file mode 100644
index 0000000000..7b76d2c18a
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Object/preventExtensions/15.2.3.10-2.js
@@ -0,0 +1,20 @@
+// Copyright (c) 2012 Ecma International.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The effect of preventExtentions must be testable by calling isExtensible
+es5id: 15.2.3.10-2
+description: >
+    Object.preventExtensions returns its arguments after setting its
+    extensible property to false
+---*/
+
+var o = {};
+var o2 = undefined;
+
+o2 = Object.preventExtensions(o);
+
+assert.sameValue(o2, o, 'o2');
+assert.sameValue(Object.isExtensible(o2), false, 'Object.isExtensible(o2)');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/preventExtensions/15.2.3.10-3-1.js b/js/src/tests/test262/built-ins/Object/preventExtensions/15.2.3.10-3-1.js
new file mode 100644
index 0000000000..0b743f2b1c
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Object/preventExtensions/15.2.3.10-3-1.js
@@ -0,0 +1,18 @@
+// Copyright (c) 2012 Ecma International.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+es5id: 15.2.3.10-3-1
+description: >
+    Object.preventExtensions - Object.isExtensible(arg) returns false
+    if arg is the returned object
+---*/
+
+var obj = {};
+var preCheck = Object.isExtensible(obj);
+Object.preventExtensions(obj);
+
+assert(preCheck, 'preCheck !== true');
+assert.sameValue(Object.isExtensible(obj), false, 'Object.isExtensible(obj)');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/preventExtensions/15.2.3.10-3-10.js b/js/src/tests/test262/built-ins/Object/preventExtensions/15.2.3.10-3-10.js
new file mode 100644
index 0000000000..dee7f3deb7
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Object/preventExtensions/15.2.3.10-3-10.js
@@ -0,0 +1,22 @@
+// Copyright (c) 2012 Ecma International.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+es5id: 15.2.3.10-3-10
+description: >
+    Object.preventExtensions - indexed properties cannot be added into
+    an Error object
+includes: [propertyHelper.js]
+---*/
+
+var errObj = new Error();
+
+assert(Object.isExtensible(errObj));
+Object.preventExtensions(errObj);
+assert(!Object.isExtensible(errObj));
+
+verifyNotWritable(errObj, "0", "nocheck");
+
+assert(!errObj.hasOwnProperty("0"));
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/preventExtensions/15.2.3.10-3-11.js b/js/src/tests/test262/built-ins/Object/preventExtensions/15.2.3.10-3-11.js
new file mode 100644
index 0000000000..1c42839aee
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Object/preventExtensions/15.2.3.10-3-11.js
@@ -0,0 +1,25 @@
+// Copyright (c) 2012 Ecma International.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+es5id: 15.2.3.10-3-11
+description: >
+    Object.preventExtensions - indexed properties cannot be added into
+    an Arguments object
+includes: [propertyHelper.js]
+---*/
+
+var argObj;
+(function() {
+  argObj = arguments;
+}());
+
+assert(Object.isExtensible(argObj));
+Object.preventExtensions(argObj);
+assert(!Object.isExtensible(argObj));
+
+verifyNotWritable(argObj, "0", "nocheck");
+
+assert(!argObj.hasOwnProperty("0"));
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/preventExtensions/15.2.3.10-3-12.js b/js/src/tests/test262/built-ins/Object/preventExtensions/15.2.3.10-3-12.js
new file mode 100644
index 0000000000..7b14a19bf1
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Object/preventExtensions/15.2.3.10-3-12.js
@@ -0,0 +1,22 @@
+// Copyright (c) 2012 Ecma International.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+es5id: 15.2.3.10-3-12
+description: >
+    Object.preventExtensions - named properties cannot be added into
+    the returned object
+includes: [propertyHelper.js]
+---*/
+
+var obj = {};
+
+assert(Object.isExtensible(obj));
+Object.preventExtensions(obj);
+assert(!Object.isExtensible(obj));
+
+verifyNotWritable(obj, "exName", "nocheck");
+
+assert(!obj.hasOwnProperty("exName"));
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/preventExtensions/15.2.3.10-3-13.js b/js/src/tests/test262/built-ins/Object/preventExtensions/15.2.3.10-3-13.js
new file mode 100644
index 0000000000..5080aace99
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Object/preventExtensions/15.2.3.10-3-13.js
@@ -0,0 +1,22 @@
+// Copyright (c) 2012 Ecma International.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+es5id: 15.2.3.10-3-13
+description: >
+    Object.preventExtensions - named properties cannot be added into a
+    Function object
+includes: [propertyHelper.js]
+---*/
+
+var obj = function() {};
+
+assert(Object.isExtensible(obj));
+Object.preventExtensions(obj);
+assert(!Object.isExtensible(obj));
+
+verifyNotWritable(obj, "exName", "nocheck");
+
+assert(!obj.hasOwnProperty("exName"));
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/preventExtensions/15.2.3.10-3-14.js b/js/src/tests/test262/built-ins/Object/preventExtensions/15.2.3.10-3-14.js
new file mode 100644
index 0000000000..1b3215f02c
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Object/preventExtensions/15.2.3.10-3-14.js
@@ -0,0 +1,22 @@
+// Copyright (c) 2012 Ecma International.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+es5id: 15.2.3.10-3-14
+description: >
+    Object.preventExtensions - named properties cannot be added into
+    an Array object
+includes: [propertyHelper.js]
+---*/
+
+var obj = [];
+
+assert(Object.isExtensible(obj));
+Object.preventExtensions(obj);
+assert(!Object.isExtensible(obj));
+
+verifyNotWritable(obj, "exName", "nocheck");
+
+assert(!obj.hasOwnProperty("exName"));
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/preventExtensions/15.2.3.10-3-15.js b/js/src/tests/test262/built-ins/Object/preventExtensions/15.2.3.10-3-15.js
new file mode 100644
index 0000000000..61ebf986b9
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Object/preventExtensions/15.2.3.10-3-15.js
@@ -0,0 +1,22 @@
+// Copyright (c) 2012 Ecma International.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+es5id: 15.2.3.10-3-15
+description: >
+    Object.preventExtensions - named properties cannot be added into a
+    String object
+includes: [propertyHelper.js]
+---*/
+
+var obj = new String("bbq");
+
+assert(Object.isExtensible(obj));
+Object.preventExtensions(obj);
+assert(!Object.isExtensible(obj));
+
+verifyNotWritable(obj, "exName", "nocheck");
+
+assert(!obj.hasOwnProperty("exName"));
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/preventExtensions/15.2.3.10-3-16.js b/js/src/tests/test262/built-ins/Object/preventExtensions/15.2.3.10-3-16.js
new file mode 100644
index 0000000000..56209edb33
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Object/preventExtensions/15.2.3.10-3-16.js
@@ -0,0 +1,22 @@
+// Copyright (c) 2012 Ecma International.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+es5id: 15.2.3.10-3-16
+description: >
+    Object.preventExtensions - named properties cannot be added into a
+    Boolean object
+includes: [propertyHelper.js]
+---*/
+
+var obj = new Boolean(true);
+
+assert(Object.isExtensible(obj));
+Object.preventExtensions(obj);
+assert(!Object.isExtensible(obj));
+
+verifyNotWritable(obj, "exName", "nocheck");
+
+assert(!obj.hasOwnProperty("exName"));
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/preventExtensions/15.2.3.10-3-17.js b/js/src/tests/test262/built-ins/Object/preventExtensions/15.2.3.10-3-17.js
new file mode 100644
index 0000000000..49162ee573
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Object/preventExtensions/15.2.3.10-3-17.js
@@ -0,0 +1,22 @@
+// Copyright (c) 2012 Ecma International.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+es5id: 15.2.3.10-3-17
+description: >
+    Object.preventExtensions - named properties cannot be added into a
+    Number object
+includes: [propertyHelper.js]
+---*/
+
+var obj = new Number(123);
+
+assert(Object.isExtensible(obj));
+Object.preventExtensions(obj);
+assert(!Object.isExtensible(obj));
+
+verifyNotWritable(obj, "exName", "nocheck");
+
+assert(!obj.hasOwnProperty("exName"));
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/preventExtensions/15.2.3.10-3-18.js b/js/src/tests/test262/built-ins/Object/preventExtensions/15.2.3.10-3-18.js
new file mode 100644
index 0000000000..44c410f8b1
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Object/preventExtensions/15.2.3.10-3-18.js
@@ -0,0 +1,22 @@
+// Copyright (c) 2012 Ecma International.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+es5id: 15.2.3.10-3-18
+description: >
+    Object.preventExtensions - named properties cannot be added into a
+    Date object
+includes: [propertyHelper.js]
+---*/
+
+var obj = new Date();
+
+assert(Object.isExtensible(obj));
+Object.preventExtensions(obj);
+assert(!Object.isExtensible(obj));
+
+verifyNotWritable(obj, "exName", "nocheck");
+
+assert(!obj.hasOwnProperty("exName"));
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/preventExtensions/15.2.3.10-3-19.js b/js/src/tests/test262/built-ins/Object/preventExtensions/15.2.3.10-3-19.js
new file mode 100644
index 0000000000..5c9440afd2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Object/preventExtensions/15.2.3.10-3-19.js
@@ -0,0 +1,22 @@
+// Copyright (c) 2012 Ecma International.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+es5id: 15.2.3.10-3-19
+description: >
+    Object.preventExtensions - named properties cannot be added into a
+    RegExp object
+includes: [propertyHelper.js]
+---*/
+
+var obj = new RegExp();
+
+assert(Object.isExtensible(obj));
+Object.preventExtensions(obj);
+assert(!Object.isExtensible(obj));
+
+verifyNotWritable(obj, "exName", "nocheck");
+
+assert(!obj.hasOwnProperty("exName"));
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/preventExtensions/15.2.3.10-3-2.js b/js/src/tests/test262/built-ins/Object/preventExtensions/15.2.3.10-3-2.js
new file mode 100644
index 0000000000..ea15fa3fbf
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Object/preventExtensions/15.2.3.10-3-2.js
@@ -0,0 +1,22 @@
+// Copyright (c) 2012 Ecma International.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+es5id: 15.2.3.10-3-2
+description: >
+    Object.preventExtensions - indexed properties cannot be added into
+    the returned object
+includes: [propertyHelper.js]
+---*/
+
+var obj = {};
+
+assert(Object.isExtensible(obj));
+Object.preventExtensions(obj);
+assert(!Object.isExtensible(obj));
+
+verifyNotWritable(obj, "0", "nocheck");
+
+assert(!obj.hasOwnProperty("0"));
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/preventExtensions/15.2.3.10-3-20.js b/js/src/tests/test262/built-ins/Object/preventExtensions/15.2.3.10-3-20.js
new file mode 100644
index 0000000000..f1bc6393e2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Object/preventExtensions/15.2.3.10-3-20.js
@@ -0,0 +1,22 @@
+// Copyright (c) 2012 Ecma International.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+es5id: 15.2.3.10-3-20
+description: >
+    Object.preventExtensions - named properties cannot be added into
+    an Error object
+includes: [propertyHelper.js]
+---*/
+
+var obj = new Error();
+
+assert(Object.isExtensible(obj));
+Object.preventExtensions(obj);
+assert(!Object.isExtensible(obj));
+
+verifyNotWritable(obj, "exName", "nocheck");
+
+assert(!obj.hasOwnProperty("exName"));
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/preventExtensions/15.2.3.10-3-21.js b/js/src/tests/test262/built-ins/Object/preventExtensions/15.2.3.10-3-21.js
new file mode 100644
index 0000000000..524f4f64f2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Object/preventExtensions/15.2.3.10-3-21.js
@@ -0,0 +1,25 @@
+// Copyright (c) 2012 Ecma International.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+es5id: 15.2.3.10-3-21
+description: >
+    Object.preventExtensions - named properties cannot be added into
+    an Arguments object
+includes: [propertyHelper.js]
+---*/
+
+var obj;
+(function() {
+  obj = arguments;
+}());
+
+assert(Object.isExtensible(obj));
+Object.preventExtensions(obj);
+assert(!Object.isExtensible(obj));
+
+verifyNotWritable(obj, "exName", "nocheck");
+
+assert(!obj.hasOwnProperty("exName"));
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/preventExtensions/15.2.3.10-3-22.js b/js/src/tests/test262/built-ins/Object/preventExtensions/15.2.3.10-3-22.js
new file mode 100644
index 0000000000..58d9a2ab18
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Object/preventExtensions/15.2.3.10-3-22.js
@@ -0,0 +1,22 @@
+// Copyright (c) 2012 Ecma International.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+es5id: 15.2.3.10-3-22
+description: >
+    Object.preventExtensions - properties can still be deleted after
+    extensions have been prevented
+---*/
+
+var obj = {
+  prop: 12
+};
+var preCheck = Object.isExtensible(obj);
+Object.preventExtensions(obj);
+
+delete obj.prop;
+
+assert(preCheck, 'preCheck !== true');
+assert.sameValue(obj.hasOwnProperty("prop"), false, 'obj.hasOwnProperty("prop")');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/preventExtensions/15.2.3.10-3-23.js b/js/src/tests/test262/built-ins/Object/preventExtensions/15.2.3.10-3-23.js
new file mode 100644
index 0000000000..1d0ff17f80
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Object/preventExtensions/15.2.3.10-3-23.js
@@ -0,0 +1,22 @@
+// Copyright (c) 2012 Ecma International.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+es5id: 15.2.3.10-3-23
+description: >
+    Object.preventExtensions - properties can still be reassigned
+    after extensions have been prevented
+---*/
+
+var obj = {
+  prop: 12
+};
+var preCheck = Object.isExtensible(obj);
+Object.preventExtensions(obj);
+
+obj.prop = -1;
+
+assert(preCheck, 'preCheck !== true');
+assert.sameValue(obj.prop, -1, 'obj.prop');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/preventExtensions/15.2.3.10-3-24.js b/js/src/tests/test262/built-ins/Object/preventExtensions/15.2.3.10-3-24.js
new file mode 100644
index 0000000000..d5299f2afa
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Object/preventExtensions/15.2.3.10-3-24.js
@@ -0,0 +1,25 @@
+// Copyright (c) 2012 Ecma International.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+es5id: 15.2.3.10-3-24
+description: >
+    Object.preventExtensions - [[Extensible]]: false on a prototype
+    doesn't prevent adding properties to an instance that inherits
+    from that prototype
+---*/
+
+var proto = {};
+var preCheck = Object.isExtensible(proto);
+Object.preventExtensions(proto);
+
+var ConstructFun = function() {};
+ConstructFun.prototype = proto;
+var child = new ConstructFun();
+
+child.prop = 10;
+
+assert(preCheck, 'preCheck !== true');
+assert(child.hasOwnProperty("prop"), 'child.hasOwnProperty("prop") !== true');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/preventExtensions/15.2.3.10-3-3.js b/js/src/tests/test262/built-ins/Object/preventExtensions/15.2.3.10-3-3.js
new file mode 100644
index 0000000000..0e82ad9285
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Object/preventExtensions/15.2.3.10-3-3.js
@@ -0,0 +1,22 @@
+// Copyright (c) 2012 Ecma International.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+es5id: 15.2.3.10-3-3
+description: >
+    Object.preventExtensions - indexed properties cannot be added into
+    a Function object
+includes: [propertyHelper.js]
+---*/
+
+var obj = function() {};
+
+assert(Object.isExtensible(obj));
+Object.preventExtensions(obj);
+assert(!Object.isExtensible(obj));
+
+verifyNotWritable(obj, "0", "nocheck");
+
+assert(!obj.hasOwnProperty("0"));
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/preventExtensions/15.2.3.10-3-4.js b/js/src/tests/test262/built-ins/Object/preventExtensions/15.2.3.10-3-4.js
new file mode 100644
index 0000000000..4d79be6486
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Object/preventExtensions/15.2.3.10-3-4.js
@@ -0,0 +1,22 @@
+// Copyright (c) 2012 Ecma International.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+es5id: 15.2.3.10-3-4
+description: >
+    Object.preventExtensions - indexed properties cannot be added into
+    an Array object
+includes: [propertyHelper.js]
+---*/
+
+var obj = [];
+
+assert(Object.isExtensible(obj));
+Object.preventExtensions(obj);
+assert(!Object.isExtensible(obj));
+
+verifyNotWritable(obj, "0", "nocheck");
+
+assert(!obj.hasOwnProperty("0"));
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/preventExtensions/15.2.3.10-3-5-1.js b/js/src/tests/test262/built-ins/Object/preventExtensions/15.2.3.10-3-5-1.js
new file mode 100644
index 0000000000..a35d2ab8e5
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Object/preventExtensions/15.2.3.10-3-5-1.js
@@ -0,0 +1,22 @@
+// Copyright (c) 2012 Ecma International.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+es5id: 15.2.3.10-3-5-1
+description: >
+    Object.preventExtensions - indexed properties cannot be added into
+    a String object
+includes: [propertyHelper.js]
+---*/
+
+var obj = new String("bbq");
+
+assert(Object.isExtensible(obj));
+Object.preventExtensions(obj);
+assert(!Object.isExtensible(obj));
+
+verifyNotWritable(obj, "10", "nocheck");
+
+assert(!obj.hasOwnProperty("10"));
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/preventExtensions/15.2.3.10-3-5.js b/js/src/tests/test262/built-ins/Object/preventExtensions/15.2.3.10-3-5.js
new file mode 100644
index 0000000000..c234615332
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Object/preventExtensions/15.2.3.10-3-5.js
@@ -0,0 +1,23 @@
+// Copyright (c) 2012 Ecma International.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+es5id: 15.2.3.10-3-5
+description: >
+    Object.preventExtensions - indexed properties cannot be added into
+    a String object
+---*/
+
+var strObj = new String();
+var preCheck = Object.isExtensible(strObj);
+Object.preventExtensions(strObj);
+assert.throws(TypeError, function() {
+  Object.defineProperty(strObj, "0", {
+    value: "c"
+  });
+});
+assert(preCheck, 'preCheck !== true');
+assert.sameValue(strObj.hasOwnProperty("0"), false, 'strObj.hasOwnProperty("0")');
+assert.sameValue(typeof strObj[0], "undefined", 'typeof strObj[0]');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/preventExtensions/15.2.3.10-3-6.js b/js/src/tests/test262/built-ins/Object/preventExtensions/15.2.3.10-3-6.js
new file mode 100644
index 0000000000..1f556adb97
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Object/preventExtensions/15.2.3.10-3-6.js
@@ -0,0 +1,22 @@
+// Copyright (c) 2012 Ecma International.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+es5id: 15.2.3.10-3-6
+description: >
+    Object.preventExtensions - indexed properties cannot be added into
+    a Boolean object
+includes: [propertyHelper.js]
+---*/
+
+var obj = new Boolean(true);
+
+assert(Object.isExtensible(obj));
+Object.preventExtensions(obj);
+assert(!Object.isExtensible(obj));
+
+verifyNotWritable(obj, "0", "nocheck");
+
+assert(!obj.hasOwnProperty("0"));
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/preventExtensions/15.2.3.10-3-7.js b/js/src/tests/test262/built-ins/Object/preventExtensions/15.2.3.10-3-7.js
new file mode 100644
index 0000000000..35f92e2a9e
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Object/preventExtensions/15.2.3.10-3-7.js
@@ -0,0 +1,22 @@
+// Copyright (c) 2012 Ecma International.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+es5id: 15.2.3.10-3-7
+description: >
+    Object.preventExtensions - indexed properties cannot be added into
+    a Number object
+includes: [propertyHelper.js]
+---*/
+
+var obj = new Number(123);
+
+assert(Object.isExtensible(obj));
+Object.preventExtensions(obj);
+assert(!Object.isExtensible(obj));
+
+verifyNotWritable(obj, "0", "nocheck");
+
+assert(!obj.hasOwnProperty("0"));
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/preventExtensions/15.2.3.10-3-8.js b/js/src/tests/test262/built-ins/Object/preventExtensions/15.2.3.10-3-8.js
new file mode 100644
index 0000000000..3fd880b2d6
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Object/preventExtensions/15.2.3.10-3-8.js
@@ -0,0 +1,22 @@
+// Copyright (c) 2012 Ecma International.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+es5id: 15.2.3.10-3-8
+description: >
+    Object.preventExtensions - indexed properties cannot be added into
+    a Date object
+includes: [propertyHelper.js]
+---*/
+
+var obj = new Date();
+
+assert(Object.isExtensible(obj));
+Object.preventExtensions(obj);
+assert(!Object.isExtensible(obj));
+
+verifyNotWritable(obj, "0", "nocheck");
+
+assert(!obj.hasOwnProperty("0"));
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/preventExtensions/15.2.3.10-3-9.js b/js/src/tests/test262/built-ins/Object/preventExtensions/15.2.3.10-3-9.js
new file mode 100644
index 0000000000..f98d113553
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Object/preventExtensions/15.2.3.10-3-9.js
@@ -0,0 +1,22 @@
+// Copyright (c) 2012 Ecma International.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+es5id: 15.2.3.10-3-9
+description: >
+    Object.preventExtensions - indexed properties cannot be added into
+    a RegExp object
+includes: [propertyHelper.js]
+---*/
+
+var obj = new RegExp();
+
+assert(Object.isExtensible(obj));
+Object.preventExtensions(obj);
+assert(!Object.isExtensible(obj));
+
+verifyNotWritable(obj, "0", "nocheck");
+
+assert(!obj.hasOwnProperty("0"));
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/preventExtensions/abrupt-completion.js b/js/src/tests/test262/built-ins/Object/preventExtensions/abrupt-completion.js
new file mode 100644
index 0000000000..9a2f60e01f
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Object/preventExtensions/abrupt-completion.js
@@ -0,0 +1,26 @@
+// Copyright (C) 2019 Alexey Shvayka. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-object.preventextensions
+description: >
+  O.[[PreventExtensions]]() returns abrupt completion.
+info: |
+  Object.preventExtensions ( O )
+
+  ...
+  2. Let status be ? O.[[PreventExtensions]]().
+features: [Proxy]
+---*/
+
+var p = new Proxy({}, {
+  preventExtensions: function() {
+    throw new Test262Error();
+  },
+});
+
+assert.throws(Test262Error, function() {
+  Object.preventExtensions(p);
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/preventExtensions/browser.js b/js/src/tests/test262/built-ins/Object/preventExtensions/browser.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Object/preventExtensions/browser.js
diff --git a/js/src/tests/test262/built-ins/Object/preventExtensions/name.js b/js/src/tests/test262/built-ins/Object/preventExtensions/name.js
new file mode 100644
index 0000000000..09e9f7130d
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Object/preventExtensions/name.js
@@ -0,0 +1,28 @@
+// Copyright (C) 2015 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+es6id: 19.1.2.15
+description: >
+  Object.preventExtensions.name is "preventExtensions".
+info: |
+  Object.preventExtensions ( O )
+
+  17 ECMAScript Standard Built-in Objects:
+    Every built-in Function object, including constructors, that is not
+    identified as an anonymous function has a name property whose value
+    is a String.
+
+    Unless otherwise specified, the name property of a built-in Function
+    object, if it exists, has the attributes { [[Writable]]: false,
+    [[Enumerable]]: false, [[Configurable]]: true }.
+includes: [propertyHelper.js]
+---*/
+
+assert.sameValue(Object.preventExtensions.name, "preventExtensions");
+
+verifyNotEnumerable(Object.preventExtensions, "name");
+verifyNotWritable(Object.preventExtensions, "name");
+verifyConfigurable(Object.preventExtensions, "name");
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/preventExtensions/not-a-constructor.js b/js/src/tests/test262/built-ins/Object/preventExtensions/not-a-constructor.js
new file mode 100644
index 0000000000..dac8c6ee18
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Object/preventExtensions/not-a-constructor.js
@@ -0,0 +1,35 @@
+// Copyright (C) 2020 Rick Waldron. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-ecmascript-standard-built-in-objects
+description: >
+  Object.preventExtensions does not implement [[Construct]], is not new-able
+info: |
+  ECMAScript Function Objects
+
+  Built-in function objects that are not identified as constructors do not
+  implement the [[Construct]] internal method unless otherwise specified in
+  the description of a particular function.
+
+  sec-evaluatenew
+
+  ...
+  7. If IsConstructor(constructor) is false, throw a TypeError exception.
+  ...
+includes: [isConstructor.js]
+features: [Reflect.construct, arrow-function]
+---*/
+
+assert.sameValue(
+  isConstructor(Object.preventExtensions),
+  false,
+  'isConstructor(Object.preventExtensions) must return false'
+);
+
+assert.throws(TypeError, () => {
+  new Object.preventExtensions({});
+}, '`new Object.preventExtensions({})` throws TypeError');
+
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/preventExtensions/shell.js b/js/src/tests/test262/built-ins/Object/preventExtensions/shell.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Object/preventExtensions/shell.js
diff --git a/js/src/tests/test262/built-ins/Object/preventExtensions/symbol-object-contains-symbol-properties-non-strict.js b/js/src/tests/test262/built-ins/Object/preventExtensions/symbol-object-contains-symbol-properties-non-strict.js
new file mode 100644
index 0000000000..3f45211187
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Object/preventExtensions/symbol-object-contains-symbol-properties-non-strict.js
@@ -0,0 +1,22 @@
+// Copyright (C) 2013 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+es6id: 19.4
+description: >
+    Object.preventExtensions(obj) where obj contains symbol properties.
+flags: [noStrict]
+features: [Symbol]
+---*/
+var symA = Symbol("A");
+var symB = Symbol("B");
+var obj = {};
+obj[symA] = 1;
+Object.preventExtensions(obj);
+obj[symA] = 2;
+obj[symB] = 1;
+
+assert.sameValue(obj[symA], 2, "The value of `obj[symA]` is `2`");
+assert.sameValue(delete obj[symA], true, "`delete obj[symA]` is `true`");
+assert.sameValue(obj[symB], undefined, "The value of `obj[symB]` is `undefined`");
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/preventExtensions/symbol-object-contains-symbol-properties-strict-strict.js b/js/src/tests/test262/built-ins/Object/preventExtensions/symbol-object-contains-symbol-properties-strict-strict.js
new file mode 100644
index 0000000000..31aebc0bc6
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Object/preventExtensions/symbol-object-contains-symbol-properties-strict-strict.js
@@ -0,0 +1,34 @@
+'use strict';
+// Copyright (C) 2013 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+es6id: 19.4
+description: >
+    Object.preventExtensions(obj) where obj contains symbol properties.
+flags: [onlyStrict]
+features: [Symbol]
+---*/
+var symA = Symbol("A");
+var symB = Symbol("B");
+var symC = Symbol("C");
+var obj = {};
+obj[symA] = 1;
+Object.preventExtensions(obj);
+obj[symA] = 2;
+
+assert.throws(TypeError, function() {
+  obj[symB] = 1;
+});
+
+assert.throws(TypeError, function() {
+  Object.defineProperty(obj, symC, {
+    value: 1
+  });
+});
+
+assert.sameValue(obj[symA], 2, "The value of `obj[symA]` is `2`");
+assert.sameValue(delete obj[symA], true, "`delete obj[symA]` is `true`");
+assert.sameValue(obj[symB], undefined, "The value of `obj[symB]` is `undefined`");
+assert.sameValue(obj[symC], undefined, "The value of `obj[symC]` is `undefined`");
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Object/preventExtensions/throws-when-false.js b/js/src/tests/test262/built-ins/Object/preventExtensions/throws-when-false.js
new file mode 100644
index 0000000000..f77a15f63c
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Object/preventExtensions/throws-when-false.js
@@ -0,0 +1,25 @@
+// Copyright (C) 2019 Ecma International. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-object.preventextensions
+description: >
+  Object.preventExtensions throws if O.[[PreventExtensions]]() returns false.
+info: |
+  Object.preventExtensions ( O )
+  ...
+  2. Let status be ? O.[[PreventExtensions]]().
+  3. If status is false, throw a TypeError exception.
+---*/
+
+const p = new Proxy({}, {
+  preventExtensions() {
+    return false;
+  },
+});
+
+assert.throws(TypeError, () => {
+  Object.preventExtensions(p);
+});
+
+reportCompare(0, 0);