From e108e876cd850562385259195413e50f0e11fb82 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Andr=C3=A9=20Bargull?= <andre.bargull@gmail.com>
Date: Thu, 28 Sep 2023 15:15:42 +0200
Subject: [PATCH] Update built-ins/Object/{create,freeze,seal} to use
 verifyProperty

---
 .../built-ins/Object/create/15.2.3.5-4-100.js |  5 ++-
 .../built-ins/Object/create/15.2.3.5-4-101.js |  5 ++-
 .../built-ins/Object/create/15.2.3.5-4-103.js |  5 ++-
 .../built-ins/Object/create/15.2.3.5-4-104.js |  5 ++-
 .../built-ins/Object/create/15.2.3.5-4-107.js |  5 ++-
 .../built-ins/Object/create/15.2.3.5-4-108.js |  5 ++-
 .../built-ins/Object/create/15.2.3.5-4-109.js |  5 ++-
 .../built-ins/Object/create/15.2.3.5-4-110.js |  5 ++-
 .../built-ins/Object/create/15.2.3.5-4-111.js |  5 ++-
 .../built-ins/Object/create/15.2.3.5-4-125.js |  6 +--
 .../built-ins/Object/create/15.2.3.5-4-126.js |  5 ++-
 .../built-ins/Object/create/15.2.3.5-4-128.js |  5 ++-
 .../built-ins/Object/create/15.2.3.5-4-129.js |  5 ++-
 .../built-ins/Object/create/15.2.3.5-4-130.js |  6 +--
 .../built-ins/Object/create/15.2.3.5-4-131.js |  5 ++-
 .../built-ins/Object/create/15.2.3.5-4-132.js |  5 ++-
 .../built-ins/Object/create/15.2.3.5-4-135.js |  5 ++-
 .../built-ins/Object/create/15.2.3.5-4-179.js |  6 ++-
 .../built-ins/Object/create/15.2.3.5-4-188.js |  6 ++-
 .../built-ins/Object/create/15.2.3.5-4-189.js |  7 +--
 .../built-ins/Object/create/15.2.3.5-4-190.js |  6 ++-
 .../built-ins/Object/create/15.2.3.5-4-204.js |  7 +--
 .../built-ins/Object/create/15.2.3.5-4-205.js |  7 +--
 .../built-ins/Object/create/15.2.3.5-4-207.js |  7 +--
 .../built-ins/Object/create/15.2.3.5-4-208.js |  7 +--
 .../built-ins/Object/create/15.2.3.5-4-209.js |  7 +--
 .../built-ins/Object/create/15.2.3.5-4-210.js |  7 +--
 .../built-ins/Object/create/15.2.3.5-4-211.js |  7 +--
 .../built-ins/Object/create/15.2.3.5-4-214.js |  7 +--
 .../built-ins/Object/create/15.2.3.5-4-307.js |  5 ++-
 .../built-ins/Object/create/15.2.3.5-4-309.js |  5 ++-
 .../built-ins/Object/create/15.2.3.5-4-311.js | 20 +++------
 .../built-ins/Object/create/15.2.3.5-4-313.js |  5 ++-
 .../built-ins/Object/create/15.2.3.5-4-315.js | 20 ++++-----
 test/built-ins/Object/create/name.js          | 11 ++---
 test/built-ins/Object/freeze/15.2.3.9-2-4.js  |  7 +--
 .../built-ins/Object/freeze/15.2.3.9-2-a-1.js |  9 ++--
 .../Object/freeze/15.2.3.9-2-a-10.js          |  9 ++--
 .../Object/freeze/15.2.3.9-2-a-11.js          | 10 ++---
 .../Object/freeze/15.2.3.9-2-a-12.js          |  9 ++--
 .../Object/freeze/15.2.3.9-2-a-13.js          |  9 ++--
 .../Object/freeze/15.2.3.9-2-a-14.js          |  8 ++--
 .../built-ins/Object/freeze/15.2.3.9-2-a-2.js |  9 ++--
 .../built-ins/Object/freeze/15.2.3.9-2-a-3.js |  8 ++--
 .../built-ins/Object/freeze/15.2.3.9-2-a-4.js |  5 ++-
 .../built-ins/Object/freeze/15.2.3.9-2-a-5.js |  5 ++-
 .../built-ins/Object/freeze/15.2.3.9-2-a-6.js |  5 ++-
 .../built-ins/Object/freeze/15.2.3.9-2-a-7.js |  8 ++--
 .../built-ins/Object/freeze/15.2.3.9-2-a-8.js |  8 ++--
 .../built-ins/Object/freeze/15.2.3.9-2-a-9.js |  9 ++--
 .../Object/freeze/15.2.3.9-2-b-i-1.js         | 22 +++------
 .../Object/freeze/15.2.3.9-2-b-i-2.js         | 45 +++++--------------
 .../built-ins/Object/freeze/15.2.3.9-2-c-1.js | 22 +++------
 .../built-ins/Object/freeze/15.2.3.9-2-c-2.js | 13 +++---
 .../built-ins/Object/freeze/15.2.3.9-2-c-3.js | 32 +++++++------
 .../built-ins/Object/freeze/15.2.3.9-2-c-4.js | 29 ++++++------
 test/built-ins/Object/freeze/name.js          | 11 ++---
 ...om-true-to-false-property-are-unaltered.js | 21 +++++----
 ...om-true-to-false-property-are-unaltered.js |  7 +--
 test/built-ins/Object/seal/length.js          | 11 ++---
 test/built-ins/Object/seal/name.js            | 11 ++---
 ...rties-of-o-are-already-non-configurable.js | 19 ++++----
 ...ttributes-of-the-property-are-unaltered.js | 13 +++---
 ...-enumerable-own-property-of-o-is-sealed.js |  5 ++-
 ...verrides-an-inherited-accessor-property.js |  5 ++-
 ...at-overrides-an-inherited-data-property.js |  5 ++-
 .../object-seal-p-is-own-accessor-property.js |  5 ++-
 ...verrides-an-inherited-accessor-property.js |  6 ++-
 ...at-overrides-an-inherited-data-property.js |  6 ++-
 .../object-seal-p-is-own-data-property.js     |  6 ++-
 ...ect-that-uses-object-s-get-own-property.js |  6 ++-
 ...ect-that-uses-object-s-get-own-property.js |  6 ++-
 ...ect-that-uses-object-s-get-own-property.js |  6 ++-
 ...ect-that-uses-object-s-get-own-property.js |  6 ++-
 ...ect-that-uses-object-s-get-own-property.js |  6 ++-
 ...ich-implements-its-own-get-own-property.js |  6 ++-
 ...ich-implements-its-own-get-own-property.js |  6 ++-
 ...ect-that-uses-object-s-get-own-property.js |  6 ++-
 ...ect-that-uses-object-s-get-own-property.js |  6 ++-
 79 files changed, 372 insertions(+), 328 deletions(-)

diff --git a/test/built-ins/Object/create/15.2.3.5-4-100.js b/test/built-ins/Object/create/15.2.3.5-4-100.js
index d219852c9f..9df41abaa9 100644
--- a/test/built-ins/Object/create/15.2.3.5-4-100.js
+++ b/test/built-ins/Object/create/15.2.3.5-4-100.js
@@ -15,5 +15,6 @@ var newObj = Object.create({}, {
   }
 });
 
-assert(newObj.hasOwnProperty("prop"), "expected newObj to have 'prop'");
-verifyNotConfigurable(newObj, "prop");
+verifyProperty(newObj, "prop", {
+  configurable: false,
+});
diff --git a/test/built-ins/Object/create/15.2.3.5-4-101.js b/test/built-ins/Object/create/15.2.3.5-4-101.js
index 84bcf29eb5..d4bd1ad67a 100644
--- a/test/built-ins/Object/create/15.2.3.5-4-101.js
+++ b/test/built-ins/Object/create/15.2.3.5-4-101.js
@@ -15,5 +15,6 @@ var newObj = Object.create({}, {
   }
 });
 
-assert(newObj.hasOwnProperty("prop"));
-verifyNotConfigurable(newObj, "prop");
+verifyProperty(newObj, "prop", {
+  configurable: false,
+});
diff --git a/test/built-ins/Object/create/15.2.3.5-4-103.js b/test/built-ins/Object/create/15.2.3.5-4-103.js
index cd95c4308e..c49aa2cd20 100644
--- a/test/built-ins/Object/create/15.2.3.5-4-103.js
+++ b/test/built-ins/Object/create/15.2.3.5-4-103.js
@@ -26,5 +26,6 @@ var newObj = Object.create({}, {
   prop: descObj
 });
 
-assert(newObj.hasOwnProperty("prop"));
-verifyNotConfigurable(newObj, "prop");
+verifyProperty(newObj, "prop", {
+  configurable: false,
+});
diff --git a/test/built-ins/Object/create/15.2.3.5-4-104.js b/test/built-ins/Object/create/15.2.3.5-4-104.js
index 1d9346fd8e..48542bca4d 100644
--- a/test/built-ins/Object/create/15.2.3.5-4-104.js
+++ b/test/built-ins/Object/create/15.2.3.5-4-104.js
@@ -29,5 +29,6 @@ var newObj = Object.create({}, {
   prop: descObj
 });
 
-assert(newObj.hasOwnProperty("prop"));
-verifyNotConfigurable(newObj, "prop");
+verifyProperty(newObj, "prop", {
+  configurable: false,
+});
diff --git a/test/built-ins/Object/create/15.2.3.5-4-107.js b/test/built-ins/Object/create/15.2.3.5-4-107.js
index 0f1b7c6465..6317a1dc8f 100644
--- a/test/built-ins/Object/create/15.2.3.5-4-107.js
+++ b/test/built-ins/Object/create/15.2.3.5-4-107.js
@@ -28,5 +28,6 @@ var newObj = Object.create({}, {
   prop: descObj
 });
 
-assert(newObj.hasOwnProperty("prop"));
-verifyNotConfigurable(newObj, "prop");
+verifyProperty(newObj, "prop", {
+  configurable: false,
+});
diff --git a/test/built-ins/Object/create/15.2.3.5-4-108.js b/test/built-ins/Object/create/15.2.3.5-4-108.js
index bd69f790ef..7169d8a440 100644
--- a/test/built-ins/Object/create/15.2.3.5-4-108.js
+++ b/test/built-ins/Object/create/15.2.3.5-4-108.js
@@ -31,5 +31,6 @@ var newObj = Object.create({}, {
   prop: descObj
 });
 
-assert(newObj.hasOwnProperty("prop"));
-verifyNotConfigurable(newObj, "prop");
+verifyProperty(newObj, "prop", {
+  configurable: false,
+});
diff --git a/test/built-ins/Object/create/15.2.3.5-4-109.js b/test/built-ins/Object/create/15.2.3.5-4-109.js
index c8e9df1d83..136d2bb065 100644
--- a/test/built-ins/Object/create/15.2.3.5-4-109.js
+++ b/test/built-ins/Object/create/15.2.3.5-4-109.js
@@ -19,5 +19,6 @@ var newObj = Object.create({}, {
   prop: descObj
 });
 
-assert(newObj.hasOwnProperty("prop"));
-verifyNotConfigurable(newObj, "prop");
+verifyProperty(newObj, "prop", {
+  configurable: false,
+});
diff --git a/test/built-ins/Object/create/15.2.3.5-4-110.js b/test/built-ins/Object/create/15.2.3.5-4-110.js
index 0f45922d8a..7056799067 100644
--- a/test/built-ins/Object/create/15.2.3.5-4-110.js
+++ b/test/built-ins/Object/create/15.2.3.5-4-110.js
@@ -29,5 +29,6 @@ var newObj = Object.create({}, {
   prop: descObj
 });
 
-assert(newObj.hasOwnProperty("prop"));
-verifyNotConfigurable(newObj, "prop");
+verifyProperty(newObj, "prop", {
+  configurable: false,
+});
diff --git a/test/built-ins/Object/create/15.2.3.5-4-111.js b/test/built-ins/Object/create/15.2.3.5-4-111.js
index 523c329b87..4e682e6cdd 100644
--- a/test/built-ins/Object/create/15.2.3.5-4-111.js
+++ b/test/built-ins/Object/create/15.2.3.5-4-111.js
@@ -24,5 +24,6 @@ var newObj = Object.create({}, {
   prop: descObj
 });
 
-assert(newObj.hasOwnProperty("prop"));
-verifyNotConfigurable(newObj, "prop");
+verifyProperty(newObj, "prop", {
+  configurable: false,
+});
diff --git a/test/built-ins/Object/create/15.2.3.5-4-125.js b/test/built-ins/Object/create/15.2.3.5-4-125.js
index 1ea05541e9..530f6ddcf5 100644
--- a/test/built-ins/Object/create/15.2.3.5-4-125.js
+++ b/test/built-ins/Object/create/15.2.3.5-4-125.js
@@ -15,6 +15,6 @@ var newObj = Object.create({}, {
   }
 });
 
-
-assert(newObj.hasOwnProperty("prop"));
-verifyNotConfigurable(newObj, "prop");
+verifyProperty(newObj, "prop", {
+  configurable: false,
+});
diff --git a/test/built-ins/Object/create/15.2.3.5-4-126.js b/test/built-ins/Object/create/15.2.3.5-4-126.js
index 4e100ce381..e5de241967 100644
--- a/test/built-ins/Object/create/15.2.3.5-4-126.js
+++ b/test/built-ins/Object/create/15.2.3.5-4-126.js
@@ -15,5 +15,6 @@ var newObj = Object.create({}, {
   }
 });
 
-assert(newObj.hasOwnProperty("prop"));
-verifyNotConfigurable(newObj, "prop");
+verifyProperty(newObj, "prop", {
+  configurable: false,
+});
diff --git a/test/built-ins/Object/create/15.2.3.5-4-128.js b/test/built-ins/Object/create/15.2.3.5-4-128.js
index c8a10125c5..7ecc2637da 100644
--- a/test/built-ins/Object/create/15.2.3.5-4-128.js
+++ b/test/built-ins/Object/create/15.2.3.5-4-128.js
@@ -15,5 +15,6 @@ var newObj = Object.create({}, {
   }
 });
 
-assert(newObj.hasOwnProperty("prop"));
-verifyNotConfigurable(newObj, "prop");
+verifyProperty(newObj, "prop", {
+  configurable: false,
+});
diff --git a/test/built-ins/Object/create/15.2.3.5-4-129.js b/test/built-ins/Object/create/15.2.3.5-4-129.js
index 14c74b0473..0f21154c1e 100644
--- a/test/built-ins/Object/create/15.2.3.5-4-129.js
+++ b/test/built-ins/Object/create/15.2.3.5-4-129.js
@@ -15,5 +15,6 @@ var newObj = Object.create({}, {
   }
 });
 
-assert(newObj.hasOwnProperty("prop"));
-verifyNotConfigurable(newObj, "prop");
+verifyProperty(newObj, "prop", {
+  configurable: false,
+});
diff --git a/test/built-ins/Object/create/15.2.3.5-4-130.js b/test/built-ins/Object/create/15.2.3.5-4-130.js
index 83769b6caa..cb80a33814 100644
--- a/test/built-ins/Object/create/15.2.3.5-4-130.js
+++ b/test/built-ins/Object/create/15.2.3.5-4-130.js
@@ -15,6 +15,6 @@ var newObj = Object.create({}, {
   }
 });
 
-
-assert(newObj.hasOwnProperty("prop"));
-verifyNotConfigurable(newObj, "prop");
+verifyProperty(newObj, "prop", {
+  configurable: false,
+});
diff --git a/test/built-ins/Object/create/15.2.3.5-4-131.js b/test/built-ins/Object/create/15.2.3.5-4-131.js
index e855085d7c..9ecd0d5eb6 100644
--- a/test/built-ins/Object/create/15.2.3.5-4-131.js
+++ b/test/built-ins/Object/create/15.2.3.5-4-131.js
@@ -15,5 +15,6 @@ var newObj = Object.create({}, {
   }
 });
 
-assert(newObj.hasOwnProperty("prop"));
-verifyNotConfigurable(newObj, "prop");
+verifyProperty(newObj, "prop", {
+  configurable: false,
+});
diff --git a/test/built-ins/Object/create/15.2.3.5-4-132.js b/test/built-ins/Object/create/15.2.3.5-4-132.js
index 15f8487974..214af762e0 100644
--- a/test/built-ins/Object/create/15.2.3.5-4-132.js
+++ b/test/built-ins/Object/create/15.2.3.5-4-132.js
@@ -15,5 +15,6 @@ var newObj = Object.create({}, {
   }
 });
 
-assert(newObj.hasOwnProperty("prop"));
-verifyNotConfigurable(newObj, "prop");
+verifyProperty(newObj, "prop", {
+  configurable: false,
+});
diff --git a/test/built-ins/Object/create/15.2.3.5-4-135.js b/test/built-ins/Object/create/15.2.3.5-4-135.js
index d675ebc245..4c0729ec85 100644
--- a/test/built-ins/Object/create/15.2.3.5-4-135.js
+++ b/test/built-ins/Object/create/15.2.3.5-4-135.js
@@ -15,5 +15,6 @@ var newObj = Object.create({}, {
   }
 });
 
-assert(newObj.hasOwnProperty("prop"));
-verifyNotConfigurable(newObj, "prop");
+verifyProperty(newObj, "prop", {
+  configurable: false,
+});
diff --git a/test/built-ins/Object/create/15.2.3.5-4-179.js b/test/built-ins/Object/create/15.2.3.5-4-179.js
index 1c71b6ebc8..c5d71576d4 100644
--- a/test/built-ins/Object/create/15.2.3.5-4-179.js
+++ b/test/built-ins/Object/create/15.2.3.5-4-179.js
@@ -15,5 +15,7 @@ var newObj = Object.create({}, {
   }
 });
 
-assert.sameValue(newObj.prop, 100);
-verifyNotWritable(newObj, "prop");
+verifyProperty(newObj, "prop", {
+  value: 100,
+  writable: false,
+});
diff --git a/test/built-ins/Object/create/15.2.3.5-4-188.js b/test/built-ins/Object/create/15.2.3.5-4-188.js
index 25ae2dfc30..e446e87175 100644
--- a/test/built-ins/Object/create/15.2.3.5-4-188.js
+++ b/test/built-ins/Object/create/15.2.3.5-4-188.js
@@ -22,5 +22,7 @@ var newObj = Object.create({}, {
   prop: descObj
 });
 
-assert.sameValue(newObj.prop, 100);
-verifyNotWritable(newObj, "prop");
+verifyProperty(newObj, "prop", {
+  value: 100,
+  writable: false,
+});
diff --git a/test/built-ins/Object/create/15.2.3.5-4-189.js b/test/built-ins/Object/create/15.2.3.5-4-189.js
index 1f4ef0c787..6159bb0d28 100644
--- a/test/built-ins/Object/create/15.2.3.5-4-189.js
+++ b/test/built-ins/Object/create/15.2.3.5-4-189.js
@@ -31,6 +31,7 @@ var newObj = Object.create({}, {
   prop: descObj
 });
 
-assert(newObj.hasOwnProperty("prop"))
-assert.sameValue(typeof(newObj.prop), "undefined");
-verifyNotWritable(newObj, "prop");
+verifyProperty(newObj, "prop", {
+  value: undefined,
+  writable: false,
+});
diff --git a/test/built-ins/Object/create/15.2.3.5-4-190.js b/test/built-ins/Object/create/15.2.3.5-4-190.js
index a2d96068e9..90295605ea 100644
--- a/test/built-ins/Object/create/15.2.3.5-4-190.js
+++ b/test/built-ins/Object/create/15.2.3.5-4-190.js
@@ -27,5 +27,7 @@ var newObj = Object.create({}, {
   prop: descObj
 });
 
-assert.sameValue(newObj.prop, 100);
-verifyNotWritable(newObj, "prop");
+verifyProperty(newObj, "prop", {
+  value: 100,
+  writable: false,
+});
diff --git a/test/built-ins/Object/create/15.2.3.5-4-204.js b/test/built-ins/Object/create/15.2.3.5-4-204.js
index 26bd33b2fc..554b982d98 100644
--- a/test/built-ins/Object/create/15.2.3.5-4-204.js
+++ b/test/built-ins/Object/create/15.2.3.5-4-204.js
@@ -15,6 +15,7 @@ var newObj = Object.create({}, {
   }
 });
 
-assert(newObj.hasOwnProperty("prop"));
-assert.sameValue(typeof newObj.prop, "undefined");
-verifyNotWritable(newObj, "prop");
+verifyProperty(newObj, "prop", {
+  value: undefined,
+  writable: false,
+});
diff --git a/test/built-ins/Object/create/15.2.3.5-4-205.js b/test/built-ins/Object/create/15.2.3.5-4-205.js
index 62ef931158..a6faaf9cab 100644
--- a/test/built-ins/Object/create/15.2.3.5-4-205.js
+++ b/test/built-ins/Object/create/15.2.3.5-4-205.js
@@ -15,6 +15,7 @@ var newObj = Object.create({}, {
   }
 });
 
-assert(newObj.hasOwnProperty("prop"));
-assert.sameValue(typeof newObj.prop, "undefined");
-verifyNotWritable(newObj, "prop");
+verifyProperty(newObj, "prop", {
+  value: undefined,
+  writable: false,
+});
diff --git a/test/built-ins/Object/create/15.2.3.5-4-207.js b/test/built-ins/Object/create/15.2.3.5-4-207.js
index e7b26dcb0c..5ed581bf3b 100644
--- a/test/built-ins/Object/create/15.2.3.5-4-207.js
+++ b/test/built-ins/Object/create/15.2.3.5-4-207.js
@@ -15,6 +15,7 @@ var newObj = Object.create({}, {
   }
 });
 
-assert(newObj.hasOwnProperty("prop"));
-assert.sameValue(typeof newObj.prop, "undefined");
-verifyNotWritable(newObj, "prop");
+verifyProperty(newObj, "prop", {
+  value: undefined,
+  writable: false,
+});
diff --git a/test/built-ins/Object/create/15.2.3.5-4-208.js b/test/built-ins/Object/create/15.2.3.5-4-208.js
index 3934339394..7cfd558203 100644
--- a/test/built-ins/Object/create/15.2.3.5-4-208.js
+++ b/test/built-ins/Object/create/15.2.3.5-4-208.js
@@ -15,6 +15,7 @@ var newObj = Object.create({}, {
   }
 });
 
-assert(newObj.hasOwnProperty("prop"));
-assert.sameValue(typeof newObj.prop, "undefined");
-verifyNotWritable(newObj, "prop");
+verifyProperty(newObj, "prop", {
+  value: undefined,
+  writable: false,
+});
diff --git a/test/built-ins/Object/create/15.2.3.5-4-209.js b/test/built-ins/Object/create/15.2.3.5-4-209.js
index c7f0534ccc..29496e527c 100644
--- a/test/built-ins/Object/create/15.2.3.5-4-209.js
+++ b/test/built-ins/Object/create/15.2.3.5-4-209.js
@@ -15,6 +15,7 @@ var newObj = Object.create({}, {
   }
 });
 
-assert(newObj.hasOwnProperty("prop"));
-assert.sameValue(typeof newObj.prop, "undefined");
-verifyNotWritable(newObj, "prop");
+verifyProperty(newObj, "prop", {
+  value: undefined,
+  writable: false,
+});
diff --git a/test/built-ins/Object/create/15.2.3.5-4-210.js b/test/built-ins/Object/create/15.2.3.5-4-210.js
index dd792fb506..61c75df0ba 100644
--- a/test/built-ins/Object/create/15.2.3.5-4-210.js
+++ b/test/built-ins/Object/create/15.2.3.5-4-210.js
@@ -15,6 +15,7 @@ var newObj = Object.create({}, {
   }
 });
 
-assert(newObj.hasOwnProperty("prop"))
-assert.sameValue(typeof newObj.prop, "undefined");
-verifyNotWritable(newObj, "prop");
+verifyProperty(newObj, "prop", {
+  value: undefined,
+  writable: false,
+});
diff --git a/test/built-ins/Object/create/15.2.3.5-4-211.js b/test/built-ins/Object/create/15.2.3.5-4-211.js
index 859704cac2..851ccaa473 100644
--- a/test/built-ins/Object/create/15.2.3.5-4-211.js
+++ b/test/built-ins/Object/create/15.2.3.5-4-211.js
@@ -15,6 +15,7 @@ var newObj = Object.create({}, {
   }
 });
 
-assert(newObj.hasOwnProperty("prop"));
-assert.sameValue(typeof newObj.prop, "undefined")
-verifyNotWritable(newObj, "prop");
+verifyProperty(newObj, "prop", {
+  value: undefined,
+  writable: false,
+});
diff --git a/test/built-ins/Object/create/15.2.3.5-4-214.js b/test/built-ins/Object/create/15.2.3.5-4-214.js
index 1e18925d27..8226fe588f 100644
--- a/test/built-ins/Object/create/15.2.3.5-4-214.js
+++ b/test/built-ins/Object/create/15.2.3.5-4-214.js
@@ -17,6 +17,7 @@ var newObj = Object.create({}, {
   prop: descObj
 });
 
-assert(newObj.hasOwnProperty("prop"))
-assert.sameValue(typeof newObj.prop, "undefined");
-verifyNotWritable(newObj, "prop");
+verifyProperty(newObj, "prop", {
+  value: undefined,
+  writable: false,
+});
diff --git a/test/built-ins/Object/create/15.2.3.5-4-307.js b/test/built-ins/Object/create/15.2.3.5-4-307.js
index fd79b1d4ad..52bcfe9b91 100644
--- a/test/built-ins/Object/create/15.2.3.5-4-307.js
+++ b/test/built-ins/Object/create/15.2.3.5-4-307.js
@@ -17,5 +17,6 @@ var newObj = Object.create({}, {
   }
 });
 
-assert(newObj.hasOwnProperty("prop"));
-verifyNotWritable(newObj, "prop");
+verifyProperty(newObj, "prop", {
+  writable: false,
+});
diff --git a/test/built-ins/Object/create/15.2.3.5-4-309.js b/test/built-ins/Object/create/15.2.3.5-4-309.js
index a9143455b0..f226172d64 100644
--- a/test/built-ins/Object/create/15.2.3.5-4-309.js
+++ b/test/built-ins/Object/create/15.2.3.5-4-309.js
@@ -18,5 +18,6 @@ var newObj = Object.create({}, {
   }
 });
 
-assert(newObj.hasOwnProperty("prop"));
-verifyNotConfigurable(newObj, "prop");
+verifyProperty(newObj, "prop", {
+  configurable: false,
+});
diff --git a/test/built-ins/Object/create/15.2.3.5-4-311.js b/test/built-ins/Object/create/15.2.3.5-4-311.js
index fa6f42a1ed..bce659433d 100644
--- a/test/built-ins/Object/create/15.2.3.5-4-311.js
+++ b/test/built-ins/Object/create/15.2.3.5-4-311.js
@@ -7,6 +7,7 @@ description: >
     Object.create - [[Set]] is set as undefined if it is absent in
     accessor descriptor of one property in 'Properties' (8.12.9 step
     4.b)
+includes: [propertyHelper.js]
 ---*/
 
 var newObj = Object.create({}, {
@@ -27,19 +28,10 @@ if (newObj.prop === "verifyCreate") {
   verifyGet = true;
 }
 
-var verifyEnumerable = false;
-for (var p in newObj) {
-  if (p === "prop") {
-    verifyEnumerable = true;
-  }
-}
-
-var verifyConfigurable = false;
-var hasProperty = newObj.hasOwnProperty("prop");
-delete newObj.prop;
-verifyConfigurable = !newObj.hasOwnProperty("prop") && hasProperty;
-
 assert(verifySet, 'verifySet !== true');
 assert(verifyGet, 'verifyGet !== true');
-assert(verifyEnumerable, 'verifyEnumerable !== true');
-assert(verifyConfigurable, 'verifyConfigurable !== true');
+
+verifyProperty(newObj, "prop", {
+  enumerable: true,
+  configurable: true,
+});
diff --git a/test/built-ins/Object/create/15.2.3.5-4-313.js b/test/built-ins/Object/create/15.2.3.5-4-313.js
index 9ab55313b8..00c97033d3 100644
--- a/test/built-ins/Object/create/15.2.3.5-4-313.js
+++ b/test/built-ins/Object/create/15.2.3.5-4-313.js
@@ -18,5 +18,6 @@ var newObj = Object.create({}, {
   }
 });
 
-assert(newObj.hasOwnProperty("prop"));
-verifyNotConfigurable(newObj, "prop");
+verifyProperty(newObj, "prop", {
+  configurable: false,
+});
diff --git a/test/built-ins/Object/create/15.2.3.5-4-315.js b/test/built-ins/Object/create/15.2.3.5-4-315.js
index d4bfc58cf3..19d3ed023c 100644
--- a/test/built-ins/Object/create/15.2.3.5-4-315.js
+++ b/test/built-ins/Object/create/15.2.3.5-4-315.js
@@ -34,18 +34,18 @@ newObj = Object.create({}, {
   }
 });
 
-verifyEqualTo(newObj, "foo1", 200);
-
-verifyWritable(newObj, "foo1");
-
-verifyEnumerable(newObj, "foo1");
-
-verifyConfigurable(newObj, "foo1");
+verifyProperty(newObj, "foo1", {
+  value: 200,
+  writable: true,
+  enumerable: true,
+  configurable: true,
+});
 
 verifyEqualTo(newObj, "foo2", getFunc());
 
 verifyWritable(newObj, "foo2", "setVerifyHelpProp");
 
-verifyEnumerable(newObj, "foo2");
-
-verifyConfigurable(newObj, "foo2");
+verifyProperty(newObj, "foo2", {
+  enumerable: true,
+  configurable: true,
+});
diff --git a/test/built-ins/Object/create/name.js b/test/built-ins/Object/create/name.js
index 0e144913b7..39d370fad3 100644
--- a/test/built-ins/Object/create/name.js
+++ b/test/built-ins/Object/create/name.js
@@ -19,8 +19,9 @@ info: |
 includes: [propertyHelper.js]
 ---*/
 
-assert.sameValue(Object.create.name, "create");
-
-verifyNotEnumerable(Object.create, "name");
-verifyNotWritable(Object.create, "name");
-verifyConfigurable(Object.create, "name");
+verifyProperty(Object.create, "name", {
+  value: "create",
+  writable: false,
+  enumerable: false,
+  configurable: true,
+});
diff --git a/test/built-ins/Object/freeze/15.2.3.9-2-4.js b/test/built-ins/Object/freeze/15.2.3.9-2-4.js
index ba3d34bae3..af09940ac4 100644
--- a/test/built-ins/Object/freeze/15.2.3.9-2-4.js
+++ b/test/built-ins/Object/freeze/15.2.3.9-2-4.js
@@ -17,6 +17,7 @@ Object.defineProperty(obj, "foo", {
 
 Object.freeze(obj);
 
-assert(obj.hasOwnProperty("foo"));
-verifyNotWritable(obj, "foo");
-verifyNotConfigurable(obj, "foo");
+verifyProperty(obj, "foo", {
+  writable: false,
+  configurable: false,
+});
diff --git a/test/built-ins/Object/freeze/15.2.3.9-2-a-1.js b/test/built-ins/Object/freeze/15.2.3.9-2-a-1.js
index b63d6ce339..9464fdb302 100644
--- a/test/built-ins/Object/freeze/15.2.3.9-2-a-1.js
+++ b/test/built-ins/Object/freeze/15.2.3.9-2-a-1.js
@@ -13,7 +13,8 @@ obj.foo = 10; // default [[Configurable]] attribute value of foo: true
 
 Object.freeze(obj);
 
-verifyNotWritable(obj, "foo");
-verifyNotConfigurable(obj, "foo");
-
-assert.sameValue(obj.foo, 10);
+verifyProperty(obj, "foo", {
+  value: 10,
+  writable: false,
+  configurable: false,
+});
diff --git a/test/built-ins/Object/freeze/15.2.3.9-2-a-10.js b/test/built-ins/Object/freeze/15.2.3.9-2-a-10.js
index fc408cffb9..41d0db5612 100644
--- a/test/built-ins/Object/freeze/15.2.3.9-2-a-10.js
+++ b/test/built-ins/Object/freeze/15.2.3.9-2-a-10.js
@@ -15,7 +15,8 @@ arrObj.foo = 10; // default [[Configurable]] attribute value of foo: true
 
 Object.freeze(arrObj);
 
-verifyNotWritable(arrObj, "foo");
-verifyNotConfigurable(arrObj, "foo");
-
-assert.sameValue(arrObj.foo, 10);
+verifyProperty(arrObj, "foo", {
+  value: 10,
+  writable: false,
+  configurable: false,
+});
diff --git a/test/built-ins/Object/freeze/15.2.3.9-2-a-11.js b/test/built-ins/Object/freeze/15.2.3.9-2-a-11.js
index 9148948646..aae9885444 100644
--- a/test/built-ins/Object/freeze/15.2.3.9-2-a-11.js
+++ b/test/built-ins/Object/freeze/15.2.3.9-2-a-11.js
@@ -17,8 +17,8 @@ var argObj = (function() {
 
 Object.freeze(argObj);
 
-var desc = Object.getOwnPropertyDescriptor(argObj, "0");
-
-verifyNotWritable(argObj, "0");
-verifyNotConfigurable(argObj, "0");
-assert.sameValue(argObj[0], 1);
+verifyProperty(argObj, "0", {
+  value: 1,
+  writable: false,
+  configurable: false,
+});
diff --git a/test/built-ins/Object/freeze/15.2.3.9-2-a-12.js b/test/built-ins/Object/freeze/15.2.3.9-2-a-12.js
index e6f8d02e51..520dc902cd 100644
--- a/test/built-ins/Object/freeze/15.2.3.9-2-a-12.js
+++ b/test/built-ins/Object/freeze/15.2.3.9-2-a-12.js
@@ -15,7 +15,8 @@ var strObj = new String("abc");
 
 Object.freeze(strObj);
 
-verifyNotWritable(strObj, "0");
-verifyNotConfigurable(strObj, "0");
-
-assert.sameValue(strObj[0], "a");
+verifyProperty(strObj, "0", {
+  value: "a",
+  writable: false,
+  configurable: false,
+});
diff --git a/test/built-ins/Object/freeze/15.2.3.9-2-a-13.js b/test/built-ins/Object/freeze/15.2.3.9-2-a-13.js
index ed8efa0fd6..1b36c91c1d 100644
--- a/test/built-ins/Object/freeze/15.2.3.9-2-a-13.js
+++ b/test/built-ins/Object/freeze/15.2.3.9-2-a-13.js
@@ -17,7 +17,8 @@ var obj = {
 
 Object.freeze(obj);
 
-verifyNotWritable(obj, "0");
-verifyNotConfigurable(obj, "0");
-
-assert.sameValue(obj[0], 0);
+verifyProperty(obj, "0", {
+  value: 0,
+  writable: false,
+  configurable: false,
+});
diff --git a/test/built-ins/Object/freeze/15.2.3.9-2-a-14.js b/test/built-ins/Object/freeze/15.2.3.9-2-a-14.js
index da9173b9ce..ea1567b5da 100644
--- a/test/built-ins/Object/freeze/15.2.3.9-2-a-14.js
+++ b/test/built-ins/Object/freeze/15.2.3.9-2-a-14.js
@@ -14,6 +14,8 @@ var arrObj = [0, 1, 2];
 
 Object.freeze(arrObj);
 
-verifyNotWritable(arrObj, "0");
-verifyNotConfigurable(arrObj, "0");
-assert.sameValue(arrObj[0], 0);
+verifyProperty(arrObj, "0", {
+  value: 0,
+  writable: false,
+  configurable: false,
+});
diff --git a/test/built-ins/Object/freeze/15.2.3.9-2-a-2.js b/test/built-ins/Object/freeze/15.2.3.9-2-a-2.js
index 23e20c4256..753ba092a7 100644
--- a/test/built-ins/Object/freeze/15.2.3.9-2-a-2.js
+++ b/test/built-ins/Object/freeze/15.2.3.9-2-a-2.js
@@ -23,7 +23,8 @@ child.foo = 10; // default [[Configurable]] attribute value of foo: true
 
 Object.freeze(child);
 
-verifyNotWritable(child, "foo");
-verifyNotConfigurable(child, "foo");
-
-assert.sameValue(child.foo, 10);
+verifyProperty(child, "foo", {
+  value: 10,
+  writable: false,
+  configurable: false,
+});
diff --git a/test/built-ins/Object/freeze/15.2.3.9-2-a-3.js b/test/built-ins/Object/freeze/15.2.3.9-2-a-3.js
index f84894b00e..58d4e1b8bb 100644
--- a/test/built-ins/Object/freeze/15.2.3.9-2-a-3.js
+++ b/test/built-ins/Object/freeze/15.2.3.9-2-a-3.js
@@ -29,6 +29,8 @@ Object.defineProperty(child, "foo", {
 
 Object.freeze(child);
 
-verifyNotWritable(child, "foo");
-verifyNotConfigurable(child, "foo");
-assert.sameValue(child.foo, 10);
+verifyProperty(child, "foo", {
+  value: 10,
+  writable: false,
+  configurable: false,
+});
diff --git a/test/built-ins/Object/freeze/15.2.3.9-2-a-4.js b/test/built-ins/Object/freeze/15.2.3.9-2-a-4.js
index e8d22fca04..bbedf457ff 100644
--- a/test/built-ins/Object/freeze/15.2.3.9-2-a-4.js
+++ b/test/built-ins/Object/freeze/15.2.3.9-2-a-4.js
@@ -18,5 +18,8 @@ Object.defineProperty(obj, "foo", {
 
 Object.freeze(obj);
 
-verifyNotConfigurable(obj, "foo");
+verifyProperty(obj, "foo", {
+  configurable: false,
+});
+
 assert.sameValue(obj.foo, 10);
diff --git a/test/built-ins/Object/freeze/15.2.3.9-2-a-5.js b/test/built-ins/Object/freeze/15.2.3.9-2-a-5.js
index 598187ff97..cb1944b2d1 100644
--- a/test/built-ins/Object/freeze/15.2.3.9-2-a-5.js
+++ b/test/built-ins/Object/freeze/15.2.3.9-2-a-5.js
@@ -28,5 +28,8 @@ Object.defineProperty(child, "foo", {
 
 Object.freeze(child);
 
-verifyNotConfigurable(child, "foo");
+verifyProperty(child, "foo", {
+  configurable: false,
+});
+
 assert.sameValue(child.foo, 10);
diff --git a/test/built-ins/Object/freeze/15.2.3.9-2-a-6.js b/test/built-ins/Object/freeze/15.2.3.9-2-a-6.js
index 6295b1f087..6692942aff 100644
--- a/test/built-ins/Object/freeze/15.2.3.9-2-a-6.js
+++ b/test/built-ins/Object/freeze/15.2.3.9-2-a-6.js
@@ -32,5 +32,8 @@ Object.defineProperty(child, "foo", {
 
 Object.freeze(child);
 
-verifyNotConfigurable(child, "foo");
+verifyProperty(child, "foo", {
+  configurable: false,
+});
+
 assert.sameValue(child.foo, 10);
diff --git a/test/built-ins/Object/freeze/15.2.3.9-2-a-7.js b/test/built-ins/Object/freeze/15.2.3.9-2-a-7.js
index 75024a84bc..527e996d21 100644
--- a/test/built-ins/Object/freeze/15.2.3.9-2-a-7.js
+++ b/test/built-ins/Object/freeze/15.2.3.9-2-a-7.js
@@ -17,6 +17,8 @@ argObj.foo = 10; // default [[Configurable]] attribute value of foo: true
 
 Object.freeze(argObj);
 
-verifyNotWritable(argObj, "foo");
-verifyNotConfigurable(argObj, "foo");
-assert.sameValue(argObj.foo, 10);
+verifyProperty(argObj, "foo", {
+  value: 10,
+  writable: false,
+  configurable: false,
+});
diff --git a/test/built-ins/Object/freeze/15.2.3.9-2-a-8.js b/test/built-ins/Object/freeze/15.2.3.9-2-a-8.js
index 972fb0263a..0517260ec3 100644
--- a/test/built-ins/Object/freeze/15.2.3.9-2-a-8.js
+++ b/test/built-ins/Object/freeze/15.2.3.9-2-a-8.js
@@ -15,6 +15,8 @@ strObj.foo = 10; // default [[Configurable]] attribute value of foo: true
 
 Object.freeze(strObj);
 
-verifyNotWritable(strObj, "foo");
-verifyNotConfigurable(strObj, "foo");
-assert.sameValue(strObj.foo, 10);
+verifyProperty(strObj, "foo", {
+  value: 10,
+  writable: false,
+  configurable: false,
+});
diff --git a/test/built-ins/Object/freeze/15.2.3.9-2-a-9.js b/test/built-ins/Object/freeze/15.2.3.9-2-a-9.js
index e4b21256b0..3d156bdb35 100644
--- a/test/built-ins/Object/freeze/15.2.3.9-2-a-9.js
+++ b/test/built-ins/Object/freeze/15.2.3.9-2-a-9.js
@@ -15,7 +15,8 @@ funObj.foo = 10; // default [[Configurable]] attribute value of foo: true
 
 Object.freeze(funObj);
 
-verifyNotWritable(funObj, "foo");
-verifyNotConfigurable(funObj, "foo");
-
-assert.sameValue(funObj.foo, 10);
+verifyProperty(funObj, "foo", {
+  value: 10,
+  writable: false,
+  configurable: false,
+});
diff --git a/test/built-ins/Object/freeze/15.2.3.9-2-b-i-1.js b/test/built-ins/Object/freeze/15.2.3.9-2-b-i-1.js
index 3ee9e83aaa..a4d772e4fc 100644
--- a/test/built-ins/Object/freeze/15.2.3.9-2-b-i-1.js
+++ b/test/built-ins/Object/freeze/15.2.3.9-2-b-i-1.js
@@ -19,20 +19,10 @@ Object.defineProperty(obj, "foo", {
 });
 
 Object.freeze(obj);
-var desc = Object.getOwnPropertyDescriptor(obj, "foo");
 
-verifyEqualTo(obj, "foo", 10);
-
-verifyNotWritable(obj, "foo");
-
-verifyEnumerable(obj, "foo");
-
-verifyNotConfigurable(obj, "foo");
-
-if (desc.writable !== false) {
-  throw new Test262Error('Expected desc.writable === false, actually ' + desc.writable);
-}
-
-if (desc.configurable !== false) {
-  throw new Test262Error('Expected desc.configurable === false, actually ' + desc.configurable);
-}
+verifyProperty(obj, "foo", {
+  value: 10,
+  writable: false,
+  enumerable: true,
+  configurable: false,
+});
diff --git a/test/built-ins/Object/freeze/15.2.3.9-2-b-i-2.js b/test/built-ins/Object/freeze/15.2.3.9-2-b-i-2.js
index 41077c8f93..3e107b60ec 100644
--- a/test/built-ins/Object/freeze/15.2.3.9-2-b-i-2.js
+++ b/test/built-ins/Object/freeze/15.2.3.9-2-b-i-2.js
@@ -28,37 +28,16 @@ Object.defineProperty(obj, "foo2", {
 
 Object.freeze(obj);
 
-var desc1 = Object.getOwnPropertyDescriptor(obj, "foo1");
-var desc2 = Object.getOwnPropertyDescriptor(obj, "foo2");
+verifyProperty(obj, "foo1", {
+  value: 10,
+  writable: false,
+  enumerable: true,
+  configurable: false,
+});
 
-verifyEqualTo(obj, "foo1", 10);
-
-verifyNotWritable(obj, "foo1");
-
-verifyEnumerable(obj, "foo1");
-
-verifyNotConfigurable(obj, "foo1");
-
-verifyEqualTo(obj, "foo2", 20);
-
-verifyNotWritable(obj, "foo2");
-
-verifyNotEnumerable(obj, "foo2");
-
-verifyNotConfigurable(obj, "foo2");
-
-if (desc1.configurable !== false) {
-  throw new Test262Error('Expected desc1.configurable === false, actually ' + desc1.configurable);
-}
-
-if (desc1.writable !== false) {
-  throw new Test262Error('Expected desc1.writable === false, actually ' + desc1.writable);
-}
-
-if (desc2.configurable !== false) {
-  throw new Test262Error('Expected desc2.configurable === false, actually ' + desc2.configurable);
-}
-
-if (desc2.writable !== false) {
-  throw new Test262Error('Expected desc2.writable === false, actually ' + desc2.writable);
-}
+verifyProperty(obj, "foo2", {
+  value: 20,
+  writable: false,
+  enumerable: false,
+  configurable: false,
+});
diff --git a/test/built-ins/Object/freeze/15.2.3.9-2-c-1.js b/test/built-ins/Object/freeze/15.2.3.9-2-c-1.js
index 7fc4aba3f7..c1bbff7925 100644
--- a/test/built-ins/Object/freeze/15.2.3.9-2-c-1.js
+++ b/test/built-ins/Object/freeze/15.2.3.9-2-c-1.js
@@ -21,19 +21,9 @@ Object.defineProperty(obj, "foo", {
 
 Object.freeze(obj);
 
-var desc = Object.getOwnPropertyDescriptor(obj, "foo");
-
-if (desc.configurable !== false) {
-  throw new Test262Error("Expected desc.configurable to be false, actually " + desc.configurable);
-}
-if (desc.writable !== false) {
-  throw new Test262Error("Expected desc.writable to be false, actually " + desc.writable);
-}
-
-verifyEqualTo(obj, "foo", 10);
-
-verifyNotWritable(obj, "foo");
-
-verifyEnumerable(obj, "foo");
-
-verifyNotConfigurable(obj, "foo");
+verifyProperty(obj, "foo", {
+  value: 10,
+  writable: false,
+  enumerable: true,
+  configurable: false,
+});
diff --git a/test/built-ins/Object/freeze/15.2.3.9-2-c-2.js b/test/built-ins/Object/freeze/15.2.3.9-2-c-2.js
index 59bdbad51b..f60b31c1f7 100644
--- a/test/built-ins/Object/freeze/15.2.3.9-2-c-2.js
+++ b/test/built-ins/Object/freeze/15.2.3.9-2-c-2.js
@@ -31,15 +31,16 @@ Object.defineProperty(obj, "foo", {
 
 Object.freeze(obj);
 
-assert(obj.hasOwnProperty("foo"));
-verifyNotConfigurable(obj, "foo");
+verifyProperty(obj, "foo", {
+  configurable: false,
+});
 
 assert.sameValue(obj.foo, 10);
 
 obj.foo = 12;
 assert(set_funcCalled);
 
-verifyEnumerable(obj, "foo");
-
-var desc = Object.getOwnPropertyDescriptor(obj, "foo");
-assert.sameValue(desc.configurable, false);
+verifyProperty(obj, "foo", {
+  enumerable: true,
+  configurable: false,
+});
diff --git a/test/built-ins/Object/freeze/15.2.3.9-2-c-3.js b/test/built-ins/Object/freeze/15.2.3.9-2-c-3.js
index 63b16a5087..3b6737bc03 100644
--- a/test/built-ins/Object/freeze/15.2.3.9-2-c-3.js
+++ b/test/built-ins/Object/freeze/15.2.3.9-2-c-3.js
@@ -37,7 +37,10 @@ Object.defineProperty(obj, "foo2", {
 
 Object.freeze(obj);
 
-verifyNotConfigurable(obj, "foo2");
+verifyProperty(obj, "foo2", {
+  configurable: false,
+});
+
 verifyEqualTo(obj, "foo2", 10);
 
 obj.foo2 = 12;
@@ -45,24 +48,19 @@ if (!resultSetFun) {
   throw new Test262Error('Expected obj["foo2"] set() to be called, but was not.');
 }
 
-if (!isEnumerable(obj, "foo2")) {
-  throw new Test262Error('Expected obj["foo2"] to be enumerable.');
-}
-
-var desc1 = Object.getOwnPropertyDescriptor(obj, "foo1");
-if (desc1.configurable || desc1.writable) {
-  throw new Test262Error('Expected obj["foo1"] to be non-writable, non-configurable; actually ' + JSON.stringify(desc1));
-}
+verifyProperty(obj, "foo2", {
+  enumerable: true,
+  configurable: false,
+});
 
 var desc2 = Object.getOwnPropertyDescriptor(obj, "foo2");
-if (desc2.configurable || desc2.writable) {
+if (desc2.writable) {
   throw new Test262Error('Expected obj["foo2"] to be non-writable, non-configurable; actually ' + JSON.stringify(desc2));
 }
 
-verifyEqualTo(obj, "foo1", 10);
-
-verifyNotWritable(obj, "foo1");
-
-verifyEnumerable(obj, "foo1");
-
-verifyNotConfigurable(obj, "foo1");
+verifyProperty(obj, "foo1", {
+  value: 10,
+  writable: false,
+  enumerable: true,
+  configurable: false,
+});
diff --git a/test/built-ins/Object/freeze/15.2.3.9-2-c-4.js b/test/built-ins/Object/freeze/15.2.3.9-2-c-4.js
index eb08e41d48..baa25e46c3 100644
--- a/test/built-ins/Object/freeze/15.2.3.9-2-c-4.js
+++ b/test/built-ins/Object/freeze/15.2.3.9-2-c-4.js
@@ -38,29 +38,28 @@ Object.freeze(obj);
 
 verifyEqualTo(obj, "foo2", 10);
 
-verifyNotConfigurable(obj, "foo2");
+verifyProperty(obj, "foo2", {
+  configurable: false,
+});
 
 obj.foo2 = 12;
 if (!resultSetFun) {
   throw new Test262Error('Expected obj["foo2"] set() to be called, but was not.');
 }
 
-verifyEnumerable(obj, "foo2");
-
-var desc1 = Object.getOwnPropertyDescriptor(obj, "foo1");
-if (desc1.configurable || desc1.writable) {
-  throw new Test262Error('Expected obj["foo1"] to be non-writable, non-configurable; actually ' + JSON.stringify(desc1));
-}
+verifyProperty(obj, "foo2", {
+  enumerable: true,
+  configurable: false,
+});
 
 var desc2 = Object.getOwnPropertyDescriptor(obj, "foo2");
-if (desc2.configurable || desc2.writable) {
+if (desc2.writable) {
   throw new Test262Error('Expected obj["foo2"] to be non-writable, non-configurable; actually ' + JSON.stringify(desc2));
 }
 
-verifyEqualTo(obj, "foo1", 10);
-
-verifyNotWritable(obj, "foo1");
-
-verifyEnumerable(obj, "foo1");
-
-verifyNotConfigurable(obj, "foo1");
+verifyProperty(obj, "foo1", {
+  value: 10,
+  writable: false,
+  enumerable: true,
+  configurable: false,
+});
diff --git a/test/built-ins/Object/freeze/name.js b/test/built-ins/Object/freeze/name.js
index be1ab47720..d39441e837 100644
--- a/test/built-ins/Object/freeze/name.js
+++ b/test/built-ins/Object/freeze/name.js
@@ -19,8 +19,9 @@ info: |
 includes: [propertyHelper.js]
 ---*/
 
-assert.sameValue(Object.freeze.name, "freeze");
-
-verifyNotEnumerable(Object.freeze, "name");
-verifyNotWritable(Object.freeze, "name");
-verifyConfigurable(Object.freeze, "name");
+verifyProperty(Object.freeze, "name", {
+  value: "freeze",
+  writable: false,
+  enumerable: false,
+  configurable: true,
+});
diff --git a/test/built-ins/Object/seal/configurable-attribute-all-own-properties-set-from-true-to-false-property-are-unaltered.js b/test/built-ins/Object/seal/configurable-attribute-all-own-properties-set-from-true-to-false-property-are-unaltered.js
index 2434aa78fb..13cc3a1d9f 100644
--- a/test/built-ins/Object/seal/configurable-attribute-all-own-properties-set-from-true-to-false-property-are-unaltered.js
+++ b/test/built-ins/Object/seal/configurable-attribute-all-own-properties-set-from-true-to-false-property-are-unaltered.js
@@ -40,19 +40,18 @@ if (!preCheck) {
   throw new Test262Error('Expected preCheck to be true, actually ' + preCheck);
 }
 
-
-verifyEqualTo(obj, "foo1", 10);
-
-verifyWritable(obj, "foo1");
-
-verifyEnumerable(obj, "foo1");
-
-verifyNotConfigurable(obj, "foo1");
+verifyProperty(obj, "foo1", {
+  value: 10,
+  writable: true,
+  enumerable: true,
+  configurable: false,
+});
 
 verifyEqualTo(obj, "foo2", get_func());
 
 verifyWritable(obj, "foo2", "variableForHelpVerify");
 
-verifyEnumerable(obj, "foo2");
-
-verifyNotConfigurable(obj, "foo2");
+verifyProperty(obj, "foo2", {
+  enumerable: true,
+  configurable: false,
+});
diff --git a/test/built-ins/Object/seal/configurable-attribute-own-accessor-property-set-from-true-to-false-property-are-unaltered.js b/test/built-ins/Object/seal/configurable-attribute-own-accessor-property-set-from-true-to-false-property-are-unaltered.js
index 6c1f428277..750474b64d 100644
--- a/test/built-ins/Object/seal/configurable-attribute-own-accessor-property-set-from-true-to-false-property-are-unaltered.js
+++ b/test/built-ins/Object/seal/configurable-attribute-own-accessor-property-set-from-true-to-false-property-are-unaltered.js
@@ -37,6 +37,7 @@ verifyEqualTo(obj, "foo", getFunc());
 
 verifyWritable(obj, "foo", "variableForHelpVerify");
 
-verifyEnumerable(obj, "foo");
-
-verifyNotConfigurable(obj, "foo");
+verifyProperty(obj, "foo", {
+  enumerable: true,
+  configurable: false,
+});
diff --git a/test/built-ins/Object/seal/length.js b/test/built-ins/Object/seal/length.js
index 4f7233f0d8..0ea257006a 100644
--- a/test/built-ins/Object/seal/length.js
+++ b/test/built-ins/Object/seal/length.js
@@ -14,8 +14,9 @@ info: |
 includes: [propertyHelper.js]
 ---*/
 
-assert.sameValue(Object.seal.length, 1);
-
-verifyNotEnumerable(Object.seal, "length");
-verifyNotWritable(Object.seal, "length");
-verifyConfigurable(Object.seal, "length");
+verifyProperty(Object.seal, "length", {
+  value: 1,
+  writable: false,
+  enumerable: false,
+  configurable: true,
+});
diff --git a/test/built-ins/Object/seal/name.js b/test/built-ins/Object/seal/name.js
index 0da5795642..71da6cbfd8 100644
--- a/test/built-ins/Object/seal/name.js
+++ b/test/built-ins/Object/seal/name.js
@@ -19,8 +19,9 @@ info: |
 includes: [propertyHelper.js]
 ---*/
 
-assert.sameValue(Object.seal.name, "seal");
-
-verifyNotEnumerable(Object.seal, "name");
-verifyNotWritable(Object.seal, "name");
-verifyConfigurable(Object.seal, "name");
+verifyProperty(Object.seal, "name", {
+  value: "seal",
+  writable: false,
+  enumerable: false,
+  configurable: true,
+});
diff --git a/test/built-ins/Object/seal/object-seal-all-own-properties-of-o-are-already-non-configurable.js b/test/built-ins/Object/seal/object-seal-all-own-properties-of-o-are-already-non-configurable.js
index 819cc0c762..90812ec1db 100644
--- a/test/built-ins/Object/seal/object-seal-all-own-properties-of-o-are-already-non-configurable.js
+++ b/test/built-ins/Object/seal/object-seal-all-own-properties-of-o-are-already-non-configurable.js
@@ -43,17 +43,18 @@ if (Object.isExtensible(obj)) {
   throw new Test262Error('Expected obj NOT to be extensible, actually ' + Object.isExtensible(obj));
 }
 
-verifyEqualTo(obj, "foo1", 10);
+verifyProperty(obj, "foo1", {
+  value: 10,
+  writable: true,
+  enumerable: true,
+  configurable: false,
+});
 
-verifyWritable(obj, "foo1");
-
-verifyEnumerable(obj, "foo1");
-
-verifyNotConfigurable(obj, "foo1");
 verifyEqualTo(obj, "foo2", get_func());
 
 verifyWritable(obj, "foo2", "variableForHelpVerify");
 
-verifyEnumerable(obj, "foo2");
-
-verifyNotConfigurable(obj, "foo2");
+verifyProperty(obj, "foo2", {
+  enumerable: true,
+  configurable: false,
+});
diff --git a/test/built-ins/Object/seal/object-seal-configurable-attribute-of-own-data-property-of-o-is-set-from-true-to-false-and-other-attributes-of-the-property-are-unaltered.js b/test/built-ins/Object/seal/object-seal-configurable-attribute-of-own-data-property-of-o-is-set-from-true-to-false-and-other-attributes-of-the-property-are-unaltered.js
index 17f53602f9..adbe4085ab 100644
--- a/test/built-ins/Object/seal/object-seal-configurable-attribute-of-own-data-property-of-o-is-set-from-true-to-false-and-other-attributes-of-the-property-are-unaltered.js
+++ b/test/built-ins/Object/seal/object-seal-configurable-attribute-of-own-data-property-of-o-is-set-from-true-to-false-and-other-attributes-of-the-property-are-unaltered.js
@@ -25,10 +25,9 @@ if (!preCheck) {
   throw new Test262Error('Expected preCheck to be true, actually ' + preCheck);
 }
 
-verifyEqualTo(obj, "foo", 10);
-
-verifyWritable(obj, "foo");
-
-verifyEnumerable(obj, "foo");
-
-verifyNotConfigurable(obj, "foo");
+verifyProperty(obj, "foo", {
+  value: 10,
+  writable: true,
+  enumerable: true,
+  configurable: false,
+});
diff --git a/test/built-ins/Object/seal/object-seal-non-enumerable-own-property-of-o-is-sealed.js b/test/built-ins/Object/seal/object-seal-non-enumerable-own-property-of-o-is-sealed.js
index 7f28c892b7..80790dd0f4 100644
--- a/test/built-ins/Object/seal/object-seal-non-enumerable-own-property-of-o-is-sealed.js
+++ b/test/built-ins/Object/seal/object-seal-non-enumerable-own-property-of-o-is-sealed.js
@@ -18,5 +18,6 @@ Object.defineProperty(obj, "foo", {
 assert(Object.isExtensible(obj));
 Object.seal(obj);
 
-assert(obj.hasOwnProperty("foo"));
-verifyNotConfigurable(obj, "foo");
+verifyProperty(obj, "foo", {
+  configurable: false,
+});
diff --git a/test/built-ins/Object/seal/object-seal-p-is-own-accessor-property-that-overrides-an-inherited-accessor-property.js b/test/built-ins/Object/seal/object-seal-p-is-own-accessor-property-that-overrides-an-inherited-accessor-property.js
index 95378480cd..5869950f5b 100644
--- a/test/built-ins/Object/seal/object-seal-p-is-own-accessor-property-that-overrides-an-inherited-accessor-property.js
+++ b/test/built-ins/Object/seal/object-seal-p-is-own-accessor-property-that-overrides-an-inherited-accessor-property.js
@@ -33,5 +33,8 @@ Object.defineProperty(obj, "foo", {
 assert(Object.isExtensible(obj));
 Object.seal(obj);
 
-verifyNotConfigurable(obj, "foo");
+verifyProperty(obj, "foo", {
+  configurable: false,
+});
+
 assert.sameValue(obj.foo, 10);
diff --git a/test/built-ins/Object/seal/object-seal-p-is-own-accessor-property-that-overrides-an-inherited-data-property.js b/test/built-ins/Object/seal/object-seal-p-is-own-accessor-property-that-overrides-an-inherited-data-property.js
index d64d205998..c52fca8d4b 100644
--- a/test/built-ins/Object/seal/object-seal-p-is-own-accessor-property-that-overrides-an-inherited-data-property.js
+++ b/test/built-ins/Object/seal/object-seal-p-is-own-accessor-property-that-overrides-an-inherited-data-property.js
@@ -31,5 +31,8 @@ Object.defineProperty(obj, "foo", {
 assert(Object.isExtensible(obj));
 Object.seal(obj);
 
-verifyNotConfigurable(obj, "foo");
+verifyProperty(obj, "foo", {
+  configurable: false,
+});
+
 assert.sameValue(obj.foo, 10);
diff --git a/test/built-ins/Object/seal/object-seal-p-is-own-accessor-property.js b/test/built-ins/Object/seal/object-seal-p-is-own-accessor-property.js
index f0c6fe77e0..ff5ad5131f 100644
--- a/test/built-ins/Object/seal/object-seal-p-is-own-accessor-property.js
+++ b/test/built-ins/Object/seal/object-seal-p-is-own-accessor-property.js
@@ -19,5 +19,8 @@ Object.defineProperty(obj, "foo", {
 assert(Object.isExtensible(obj));
 Object.seal(obj);
 
-verifyNotConfigurable(obj, "foo");
+verifyProperty(obj, "foo", {
+  configurable: false,
+});
+
 assert.sameValue(obj.foo, 10);
diff --git a/test/built-ins/Object/seal/object-seal-p-is-own-data-property-that-overrides-an-inherited-accessor-property.js b/test/built-ins/Object/seal/object-seal-p-is-own-data-property-that-overrides-an-inherited-accessor-property.js
index 7e9a4df12b..c8132f5277 100644
--- a/test/built-ins/Object/seal/object-seal-p-is-own-data-property-that-overrides-an-inherited-accessor-property.js
+++ b/test/built-ins/Object/seal/object-seal-p-is-own-data-property-that-overrides-an-inherited-accessor-property.js
@@ -30,5 +30,7 @@ Object.defineProperty(obj, "foo", {
 assert(Object.isExtensible(obj));
 Object.seal(obj);
 
-verifyNotConfigurable(obj, "foo");
-assert.sameValue(obj.foo, 10);
+verifyProperty(obj, "foo", {
+  value: 10,
+  configurable: false,
+});
diff --git a/test/built-ins/Object/seal/object-seal-p-is-own-data-property-that-overrides-an-inherited-data-property.js b/test/built-ins/Object/seal/object-seal-p-is-own-data-property-that-overrides-an-inherited-data-property.js
index 2810f976c7..960a565f7c 100644
--- a/test/built-ins/Object/seal/object-seal-p-is-own-data-property-that-overrides-an-inherited-data-property.js
+++ b/test/built-ins/Object/seal/object-seal-p-is-own-data-property-that-overrides-an-inherited-data-property.js
@@ -25,5 +25,7 @@ Object.defineProperty(obj, "foo", {
 assert(Object.isExtensible(obj));
 Object.seal(obj);
 
-verifyNotConfigurable(obj, "foo");
-assert.sameValue(obj.foo, 10);
+verifyProperty(obj, "foo", {
+  value: 10,
+  configurable: false,
+});
diff --git a/test/built-ins/Object/seal/object-seal-p-is-own-data-property.js b/test/built-ins/Object/seal/object-seal-p-is-own-data-property.js
index d4277df307..f838179798 100644
--- a/test/built-ins/Object/seal/object-seal-p-is-own-data-property.js
+++ b/test/built-ins/Object/seal/object-seal-p-is-own-data-property.js
@@ -14,5 +14,7 @@ obj.foo = 10; // default [[Configurable]] attribute value of foo: true
 assert(Object.isExtensible(obj));
 Object.seal(obj);
 
-verifyNotConfigurable(obj, "foo");
-assert.sameValue(obj.foo, 10);
+verifyProperty(obj, "foo", {
+  value: 10,
+  configurable: false,
+});
diff --git a/test/built-ins/Object/seal/object-seal-p-is-own-property-of-a-boolean-object-that-uses-object-s-get-own-property.js b/test/built-ins/Object/seal/object-seal-p-is-own-property-of-a-boolean-object-that-uses-object-s-get-own-property.js
index 153a874a5b..30dc9ef22f 100644
--- a/test/built-ins/Object/seal/object-seal-p-is-own-property-of-a-boolean-object-that-uses-object-s-get-own-property.js
+++ b/test/built-ins/Object/seal/object-seal-p-is-own-property-of-a-boolean-object-that-uses-object-s-get-own-property.js
@@ -16,5 +16,7 @@ obj.foo = 10;
 assert(Object.isExtensible(obj));
 Object.seal(obj);
 
-verifyNotConfigurable(obj, "foo");
-assert.sameValue(obj.foo, 10);
+verifyProperty(obj, "foo", {
+  value: 10,
+  configurable: false,
+});
diff --git a/test/built-ins/Object/seal/object-seal-p-is-own-property-of-a-date-object-that-uses-object-s-get-own-property.js b/test/built-ins/Object/seal/object-seal-p-is-own-property-of-a-date-object-that-uses-object-s-get-own-property.js
index 23c9a59e5a..57824620c0 100644
--- a/test/built-ins/Object/seal/object-seal-p-is-own-property-of-a-date-object-that-uses-object-s-get-own-property.js
+++ b/test/built-ins/Object/seal/object-seal-p-is-own-property-of-a-date-object-that-uses-object-s-get-own-property.js
@@ -16,5 +16,7 @@ obj.foo = 10;
 assert(Object.isExtensible(obj));
 Object.seal(obj);
 
-verifyNotConfigurable(obj, "foo");
-assert.sameValue(obj.foo, 10);
+verifyProperty(obj, "foo", {
+  value: 10,
+  configurable: false,
+});
diff --git a/test/built-ins/Object/seal/object-seal-p-is-own-property-of-a-function-object-that-uses-object-s-get-own-property.js b/test/built-ins/Object/seal/object-seal-p-is-own-property-of-a-function-object-that-uses-object-s-get-own-property.js
index d62223c33c..dc9a94aa51 100644
--- a/test/built-ins/Object/seal/object-seal-p-is-own-property-of-a-function-object-that-uses-object-s-get-own-property.js
+++ b/test/built-ins/Object/seal/object-seal-p-is-own-property-of-a-function-object-that-uses-object-s-get-own-property.js
@@ -16,5 +16,7 @@ obj.foo = 10;
 assert(Object.isExtensible(obj));
 Object.seal(obj);
 
-verifyNotConfigurable(obj, "foo");
-assert.sameValue(obj.foo, 10);
+verifyProperty(obj, "foo", {
+  value: 10,
+  configurable: false,
+});
diff --git a/test/built-ins/Object/seal/object-seal-p-is-own-property-of-a-number-object-that-uses-object-s-get-own-property.js b/test/built-ins/Object/seal/object-seal-p-is-own-property-of-a-number-object-that-uses-object-s-get-own-property.js
index 1f306fd409..9334bd7f75 100644
--- a/test/built-ins/Object/seal/object-seal-p-is-own-property-of-a-number-object-that-uses-object-s-get-own-property.js
+++ b/test/built-ins/Object/seal/object-seal-p-is-own-property-of-a-number-object-that-uses-object-s-get-own-property.js
@@ -16,5 +16,7 @@ obj.foo = 10;
 assert(Object.isExtensible(obj));
 Object.seal(obj);
 
-verifyNotConfigurable(obj, "foo");
-assert.sameValue(obj.foo, 10);
+verifyProperty(obj, "foo", {
+  value: 10,
+  configurable: false,
+});
diff --git a/test/built-ins/Object/seal/object-seal-p-is-own-property-of-a-reg-exp-object-that-uses-object-s-get-own-property.js b/test/built-ins/Object/seal/object-seal-p-is-own-property-of-a-reg-exp-object-that-uses-object-s-get-own-property.js
index 64e909185b..5c66aa4a07 100644
--- a/test/built-ins/Object/seal/object-seal-p-is-own-property-of-a-reg-exp-object-that-uses-object-s-get-own-property.js
+++ b/test/built-ins/Object/seal/object-seal-p-is-own-property-of-a-reg-exp-object-that-uses-object-s-get-own-property.js
@@ -16,5 +16,7 @@ obj.foo = 10;
 assert(Object.isExtensible(obj));
 Object.seal(obj);
 
-verifyNotConfigurable(obj, "foo");
-assert.sameValue(obj.foo, 10);
+verifyProperty(obj, "foo", {
+  value: 10,
+  configurable: false,
+});
diff --git a/test/built-ins/Object/seal/object-seal-p-is-own-property-of-a-string-object-which-implements-its-own-get-own-property.js b/test/built-ins/Object/seal/object-seal-p-is-own-property-of-a-string-object-which-implements-its-own-get-own-property.js
index fce6ad9534..47da25a42b 100644
--- a/test/built-ins/Object/seal/object-seal-p-is-own-property-of-a-string-object-which-implements-its-own-get-own-property.js
+++ b/test/built-ins/Object/seal/object-seal-p-is-own-property-of-a-string-object-which-implements-its-own-get-own-property.js
@@ -16,5 +16,7 @@ obj.foo = 10;
 assert(Object.isExtensible(obj));
 Object.seal(obj);
 
-verifyNotConfigurable(obj, "foo");
-assert.sameValue(obj.foo, 10);
+verifyProperty(obj, "foo", {
+  value: 10,
+  configurable: false,
+});
diff --git a/test/built-ins/Object/seal/object-seal-p-is-own-property-of-an-arguments-object-which-implements-its-own-get-own-property.js b/test/built-ins/Object/seal/object-seal-p-is-own-property-of-an-arguments-object-which-implements-its-own-get-own-property.js
index e12b8aebfc..863a5566cf 100644
--- a/test/built-ins/Object/seal/object-seal-p-is-own-property-of-an-arguments-object-which-implements-its-own-get-own-property.js
+++ b/test/built-ins/Object/seal/object-seal-p-is-own-property-of-an-arguments-object-which-implements-its-own-get-own-property.js
@@ -18,5 +18,7 @@ obj.foo = 10;
 assert(Object.isExtensible(obj));
 Object.seal(obj);
 
-verifyNotConfigurable(obj, "foo");
-assert.sameValue(obj.foo, 10);
+verifyProperty(obj, "foo", {
+  value: 10,
+  configurable: false,
+});
diff --git a/test/built-ins/Object/seal/object-seal-p-is-own-property-of-an-array-object-that-uses-object-s-get-own-property.js b/test/built-ins/Object/seal/object-seal-p-is-own-property-of-an-array-object-that-uses-object-s-get-own-property.js
index 8be909d3fe..7cf1658174 100644
--- a/test/built-ins/Object/seal/object-seal-p-is-own-property-of-an-array-object-that-uses-object-s-get-own-property.js
+++ b/test/built-ins/Object/seal/object-seal-p-is-own-property-of-an-array-object-that-uses-object-s-get-own-property.js
@@ -16,5 +16,7 @@ obj.foo = 10;
 assert(Object.isExtensible(obj));
 Object.seal(obj);
 
-verifyNotConfigurable(obj, "foo");
-assert.sameValue(obj.foo, 10);
+verifyProperty(obj, "foo", {
+  value: 10,
+  configurable: false,
+});
diff --git a/test/built-ins/Object/seal/object-seal-p-is-own-property-of-an-error-object-that-uses-object-s-get-own-property.js b/test/built-ins/Object/seal/object-seal-p-is-own-property-of-an-error-object-that-uses-object-s-get-own-property.js
index baeb4a18d1..54291f4b62 100644
--- a/test/built-ins/Object/seal/object-seal-p-is-own-property-of-an-error-object-that-uses-object-s-get-own-property.js
+++ b/test/built-ins/Object/seal/object-seal-p-is-own-property-of-an-error-object-that-uses-object-s-get-own-property.js
@@ -16,5 +16,7 @@ obj.foo = 10;
 assert(Object.isExtensible(obj));
 Object.seal(obj);
 
-verifyNotConfigurable(obj, "foo");
-assert.sameValue(obj.foo, 10);
+verifyProperty(obj, "foo", {
+  value: 10,
+  configurable: false,
+});