diff --git a/test/built-ins/Object/seal/seal-aggregateerror-object.js b/test/built-ins/Object/seal/seal-aggregateerror.js
similarity index 96%
rename from test/built-ins/Object/seal/seal-aggregateerror-object.js
rename to test/built-ins/Object/seal/seal-aggregateerror.js
index 168bd2b6c8..4587e8adf9 100644
--- a/test/built-ins/Object/seal/seal-aggregateerror-object.js
+++ b/test/built-ins/Object/seal/seal-aggregateerror.js
@@ -4,7 +4,7 @@
 /*---
 esid: sec-object.seal
 description: >
-    Object.seal an AggregateError object
+    Object.seal AggregateError
 info: |
   If Type(O) is not Object, return O.
   Let status be ? SetIntegrityLevel(O, sealed).
diff --git a/test/built-ins/Object/seal/seal-arraybuffer-object.js b/test/built-ins/Object/seal/seal-arraybuffer.js
similarity index 96%
rename from test/built-ins/Object/seal/seal-arraybuffer-object.js
rename to test/built-ins/Object/seal/seal-arraybuffer.js
index 8bd93342e0..a3f4c05e77 100644
--- a/test/built-ins/Object/seal/seal-arraybuffer-object.js
+++ b/test/built-ins/Object/seal/seal-arraybuffer.js
@@ -4,7 +4,7 @@
 /*---
 esid: sec-object.seal
 description: >
-    Object.seal an ArrayBuffer object
+    Object.seal ArrayBuffer
 info: |
   If Type(O) is not Object, return O.
   Let status be ? SetIntegrityLevel(O, sealed).
diff --git a/test/built-ins/Object/seal/seal-arrowfunction-object.js b/test/built-ins/Object/seal/seal-arrowfunction.js
similarity index 96%
rename from test/built-ins/Object/seal/seal-arrowfunction-object.js
rename to test/built-ins/Object/seal/seal-arrowfunction.js
index 23ab204328..2d173c287a 100644
--- a/test/built-ins/Object/seal/seal-arrowfunction-object.js
+++ b/test/built-ins/Object/seal/seal-arrowfunction.js
@@ -4,7 +4,7 @@
 /*---
 esid: sec-object.seal
 description: >
-    Object.seal an ArrowFunction object
+    Object.seal ArrowFunction
 info: |
   If Type(O) is not Object, return O.
   Let status be ? SetIntegrityLevel(O, sealed).
diff --git a/test/built-ins/Object/seal/seal-asyncarrowfunction-object.js b/test/built-ins/Object/seal/seal-asyncarrowfunction.js
similarity index 96%
rename from test/built-ins/Object/seal/seal-asyncarrowfunction-object.js
rename to test/built-ins/Object/seal/seal-asyncarrowfunction.js
index 6b0778e0a1..05e00e8b29 100644
--- a/test/built-ins/Object/seal/seal-asyncarrowfunction-object.js
+++ b/test/built-ins/Object/seal/seal-asyncarrowfunction.js
@@ -4,7 +4,7 @@
 /*---
 esid: sec-object.seal
 description: >
-    Object.seal an AsyncArrowFunction object
+    Object.seal AsyncArrowFunction
 info: |
   If Type(O) is not Object, return O.
   Let status be ? SetIntegrityLevel(O, sealed).
diff --git a/test/built-ins/Object/seal/seal-asyncfunction-object.js b/test/built-ins/Object/seal/seal-asyncfunction.js
similarity index 96%
rename from test/built-ins/Object/seal/seal-asyncfunction-object.js
rename to test/built-ins/Object/seal/seal-asyncfunction.js
index ce9dcff51b..3523a812e6 100644
--- a/test/built-ins/Object/seal/seal-asyncfunction-object.js
+++ b/test/built-ins/Object/seal/seal-asyncfunction.js
@@ -4,7 +4,7 @@
 /*---
 esid: sec-object.seal
 description: >
-    Object.seal an AsyncFunction object
+    Object.seal AsyncFunction
 info: |
   If Type(O) is not Object, return O.
   Let status be ? SetIntegrityLevel(O, sealed).
diff --git a/test/built-ins/Object/seal/seal-asyncgeneratorfunction-object.js b/test/built-ins/Object/seal/seal-asyncgeneratorfunction.js
similarity index 96%
rename from test/built-ins/Object/seal/seal-asyncgeneratorfunction-object.js
rename to test/built-ins/Object/seal/seal-asyncgeneratorfunction.js
index c8a5439dcb..75f7dfc785 100644
--- a/test/built-ins/Object/seal/seal-asyncgeneratorfunction-object.js
+++ b/test/built-ins/Object/seal/seal-asyncgeneratorfunction.js
@@ -4,7 +4,7 @@
 /*---
 esid: sec-object.seal
 description: >
-    Object.seal an AsyncGeneratorFunction object
+    Object.seal AsyncGeneratorFunction
 info: |
   If Type(O) is not Object, return O.
   Let status be ? SetIntegrityLevel(O, sealed).
diff --git a/test/built-ins/Object/seal/seal-bigint64array-object.js b/test/built-ins/Object/seal/seal-bigint64array.js
similarity index 96%
rename from test/built-ins/Object/seal/seal-bigint64array-object.js
rename to test/built-ins/Object/seal/seal-bigint64array.js
index 858a0609aa..af759788b5 100644
--- a/test/built-ins/Object/seal/seal-bigint64array-object.js
+++ b/test/built-ins/Object/seal/seal-bigint64array.js
@@ -4,7 +4,7 @@
 /*---
 esid: sec-object.seal
 description: >
-    Object.seal a BigInt64Array object
+    Object.seal BigInt64Array
 info: |
   If Type(O) is not Object, return O.
   Let status be ? SetIntegrityLevel(O, sealed).
diff --git a/test/built-ins/Object/seal/seal-biguint64array-object.js b/test/built-ins/Object/seal/seal-biguint64array.js
similarity index 96%
rename from test/built-ins/Object/seal/seal-biguint64array-object.js
rename to test/built-ins/Object/seal/seal-biguint64array.js
index 5baa2d36f0..ce6de0b063 100644
--- a/test/built-ins/Object/seal/seal-biguint64array-object.js
+++ b/test/built-ins/Object/seal/seal-biguint64array.js
@@ -4,7 +4,7 @@
 /*---
 esid: sec-object.seal
 description: >
-    Object.seal a BigUint64Array object
+    Object.seal BigUint64Array
 info: |
   If Type(O) is not Object, return O.
   Let status be ? SetIntegrityLevel(O, sealed).
diff --git a/test/built-ins/Object/seal/seal-boolean-literal.js b/test/built-ins/Object/seal/seal-boolean-literal.js
new file mode 100644
index 0000000000..3a7fdcee49
--- /dev/null
+++ b/test/built-ins/Object/seal/seal-boolean-literal.js
@@ -0,0 +1,36 @@
+// Copyright (C) 2020 Rick Waldron. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-object.seal
+description: >
+    Object.seal boolean literal
+info: |
+  If Type(O) is not Object, return O.
+  Let status be ? SetIntegrityLevel(O, sealed).
+
+  SetIntegrityLevel ( O, level )
+
+  Assert: Type(O) is Object.
+  Assert: level is either sealed or frozen.
+  Let status be ? O.[[PreventExtensions]]().
+  If status is false, return false.
+  Let keys be ? O.[[OwnPropertyKeys]]().
+  If level is sealed, then
+    For each element k of keys, do
+      Perform ? DefinePropertyOrThrow(O, k, PropertyDescriptor { [[Configurable]]: false }).
+  Else,
+    Assert: level is frozen.
+    For each element k of keys, do
+      Let currentDesc be ? O.[[GetOwnProperty]](k).
+      If currentDesc is not undefined, then
+        If IsAccessorDescriptor(currentDesc) is true, then
+          Let desc be the PropertyDescriptor { [[Configurable]]: false }.
+        Else,
+          Let desc be the PropertyDescriptor { [[Configurable]]: false, [[Writable]]: false }.
+        Perform ? DefinePropertyOrThrow(O, k, desc).
+  Return true.
+
+---*/
+
+Object.seal(true);
diff --git a/test/built-ins/Object/seal/seal-boolean-object.js b/test/built-ins/Object/seal/seal-boolean.js
similarity index 97%
rename from test/built-ins/Object/seal/seal-boolean-object.js
rename to test/built-ins/Object/seal/seal-boolean.js
index 6dc93bea68..99ff41ffe0 100644
--- a/test/built-ins/Object/seal/seal-boolean-object.js
+++ b/test/built-ins/Object/seal/seal-boolean.js
@@ -4,7 +4,7 @@
 /*---
 esid: sec-object.seal
 description: >
-    Object.seal a Boolean object
+    Object.seal Boolean
 info: |
   If Type(O) is not Object, return O.
   Let status be ? SetIntegrityLevel(O, sealed).
diff --git a/test/built-ins/Object/seal/seal-dataview-object.js b/test/built-ins/Object/seal/seal-dataview.js
similarity index 97%
rename from test/built-ins/Object/seal/seal-dataview-object.js
rename to test/built-ins/Object/seal/seal-dataview.js
index 59fe4050d5..2af959d37b 100644
--- a/test/built-ins/Object/seal/seal-dataview-object.js
+++ b/test/built-ins/Object/seal/seal-dataview.js
@@ -4,7 +4,7 @@
 /*---
 esid: sec-object.seal
 description: >
-    Object.seal a DataView object
+    Object.seal DataView
 info: |
   If Type(O) is not Object, return O.
   Let status be ? SetIntegrityLevel(O, sealed).
diff --git a/test/built-ins/Object/seal/seal-date-object.js b/test/built-ins/Object/seal/seal-date.js
similarity index 97%
rename from test/built-ins/Object/seal/seal-date-object.js
rename to test/built-ins/Object/seal/seal-date.js
index 9ff70aceb3..e4ccbc9bc8 100644
--- a/test/built-ins/Object/seal/seal-date-object.js
+++ b/test/built-ins/Object/seal/seal-date.js
@@ -4,7 +4,7 @@
 /*---
 esid: sec-object.seal
 description: >
-    Object.seal a Date object
+    Object.seal Date
 info: |
   If Type(O) is not Object, return O.
   Let status be ? SetIntegrityLevel(O, sealed).
diff --git a/test/built-ins/Object/seal/seal-error-object.js b/test/built-ins/Object/seal/seal-error.js
similarity index 97%
rename from test/built-ins/Object/seal/seal-error-object.js
rename to test/built-ins/Object/seal/seal-error.js
index 32379eeb9d..4df2297f50 100644
--- a/test/built-ins/Object/seal/seal-error-object.js
+++ b/test/built-ins/Object/seal/seal-error.js
@@ -4,7 +4,7 @@
 /*---
 esid: sec-object.seal
 description: >
-    Object.seal an Error object
+    Object.seal Error
 info: |
   If Type(O) is not Object, return O.
   Let status be ? SetIntegrityLevel(O, sealed).
diff --git a/test/built-ins/Object/seal/seal-evalerror-object.js b/test/built-ins/Object/seal/seal-evalerror.js
similarity index 97%
rename from test/built-ins/Object/seal/seal-evalerror-object.js
rename to test/built-ins/Object/seal/seal-evalerror.js
index 0fbc4f8c45..1568808dde 100644
--- a/test/built-ins/Object/seal/seal-evalerror-object.js
+++ b/test/built-ins/Object/seal/seal-evalerror.js
@@ -4,7 +4,7 @@
 /*---
 esid: sec-object.seal
 description: >
-    Object.seal an EvalError object
+    Object.seal EvalError
 info: |
   If Type(O) is not Object, return O.
   Let status be ? SetIntegrityLevel(O, sealed).
diff --git a/test/built-ins/Object/seal/seal-finalizationregistry-object.js b/test/built-ins/Object/seal/seal-finalizationregistry.js
similarity index 96%
rename from test/built-ins/Object/seal/seal-finalizationregistry-object.js
rename to test/built-ins/Object/seal/seal-finalizationregistry.js
index a91a5d42a9..49f84dc614 100644
--- a/test/built-ins/Object/seal/seal-finalizationregistry-object.js
+++ b/test/built-ins/Object/seal/seal-finalizationregistry.js
@@ -4,7 +4,7 @@
 /*---
 esid: sec-object.seal
 description: >
-    Object.seal a FinalizationRegistry object
+    Object.seal FinalizationRegistry
 info: |
   If Type(O) is not Object, return O.
   Let status be ? SetIntegrityLevel(O, sealed).
diff --git a/test/built-ins/Object/seal/seal-float32array-object.js b/test/built-ins/Object/seal/seal-float32array.js
similarity index 96%
rename from test/built-ins/Object/seal/seal-float32array-object.js
rename to test/built-ins/Object/seal/seal-float32array.js
index b0fdd7762a..e2438eccd8 100644
--- a/test/built-ins/Object/seal/seal-float32array-object.js
+++ b/test/built-ins/Object/seal/seal-float32array.js
@@ -4,7 +4,7 @@
 /*---
 esid: sec-object.seal
 description: >
-    Object.seal a Float32Array object
+    Object.seal Float32Array
 info: |
   If Type(O) is not Object, return O.
   Let status be ? SetIntegrityLevel(O, sealed).
diff --git a/test/built-ins/Object/seal/seal-float64array-object.js b/test/built-ins/Object/seal/seal-float64array.js
similarity index 96%
rename from test/built-ins/Object/seal/seal-float64array-object.js
rename to test/built-ins/Object/seal/seal-float64array.js
index 1ab039e468..9bd8d2de4e 100644
--- a/test/built-ins/Object/seal/seal-float64array-object.js
+++ b/test/built-ins/Object/seal/seal-float64array.js
@@ -4,7 +4,7 @@
 /*---
 esid: sec-object.seal
 description: >
-    Object.seal a Float64Array object
+    Object.seal Float64Array
 info: |
   If Type(O) is not Object, return O.
   Let status be ? SetIntegrityLevel(O, sealed).
diff --git a/test/built-ins/Object/seal/seal-function-object.js b/test/built-ins/Object/seal/seal-function.js
similarity index 97%
rename from test/built-ins/Object/seal/seal-function-object.js
rename to test/built-ins/Object/seal/seal-function.js
index 8875de6c1b..6096e1a58d 100644
--- a/test/built-ins/Object/seal/seal-function-object.js
+++ b/test/built-ins/Object/seal/seal-function.js
@@ -4,7 +4,7 @@
 /*---
 esid: sec-object.seal
 description: >
-    Object.seal a Function object
+    Object.seal Function
 info: |
   If Type(O) is not Object, return O.
   Let status be ? SetIntegrityLevel(O, sealed).
diff --git a/test/built-ins/Object/seal/seal-generatorfunction-object.js b/test/built-ins/Object/seal/seal-generatorfunction.js
similarity index 96%
rename from test/built-ins/Object/seal/seal-generatorfunction-object.js
rename to test/built-ins/Object/seal/seal-generatorfunction.js
index c14d0301f1..9dfa36b882 100644
--- a/test/built-ins/Object/seal/seal-generatorfunction-object.js
+++ b/test/built-ins/Object/seal/seal-generatorfunction.js
@@ -4,7 +4,7 @@
 /*---
 esid: sec-object.seal
 description: >
-    Object.seal a GeneratorFunction object
+    Object.seal GeneratorFunction
 info: |
   If Type(O) is not Object, return O.
   Let status be ? SetIntegrityLevel(O, sealed).
diff --git a/test/built-ins/Object/seal/seal-infinity.js b/test/built-ins/Object/seal/seal-infinity.js
new file mode 100644
index 0000000000..aa2bd6735c
--- /dev/null
+++ b/test/built-ins/Object/seal/seal-infinity.js
@@ -0,0 +1,36 @@
+// Copyright (C) 2020 Rick Waldron. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-object.seal
+description: >
+    Object.seal Infinity
+info: |
+  If Type(O) is not Object, return O.
+  Let status be ? SetIntegrityLevel(O, sealed).
+
+  SetIntegrityLevel ( O, level )
+
+  Assert: Type(O) is Object.
+  Assert: level is either sealed or frozen.
+  Let status be ? O.[[PreventExtensions]]().
+  If status is false, return false.
+  Let keys be ? O.[[OwnPropertyKeys]]().
+  If level is sealed, then
+    For each element k of keys, do
+      Perform ? DefinePropertyOrThrow(O, k, PropertyDescriptor { [[Configurable]]: false }).
+  Else,
+    Assert: level is frozen.
+    For each element k of keys, do
+      Let currentDesc be ? O.[[GetOwnProperty]](k).
+      If currentDesc is not undefined, then
+        If IsAccessorDescriptor(currentDesc) is true, then
+          Let desc be the PropertyDescriptor { [[Configurable]]: false }.
+        Else,
+          Let desc be the PropertyDescriptor { [[Configurable]]: false, [[Writable]]: false }.
+        Perform ? DefinePropertyOrThrow(O, k, desc).
+  Return true.
+
+---*/
+
+Object.seal(Infinity);
diff --git a/test/built-ins/Object/seal/seal-int16array-object.js b/test/built-ins/Object/seal/seal-int16array.js
similarity index 96%
rename from test/built-ins/Object/seal/seal-int16array-object.js
rename to test/built-ins/Object/seal/seal-int16array.js
index b4177e9d3a..b46245923b 100644
--- a/test/built-ins/Object/seal/seal-int16array-object.js
+++ b/test/built-ins/Object/seal/seal-int16array.js
@@ -4,7 +4,7 @@
 /*---
 esid: sec-object.seal
 description: >
-    Object.seal an Int16Array object
+    Object.seal Int16Array
 info: |
   If Type(O) is not Object, return O.
   Let status be ? SetIntegrityLevel(O, sealed).
diff --git a/test/built-ins/Object/seal/seal-int32array-object.js b/test/built-ins/Object/seal/seal-int32array.js
similarity index 96%
rename from test/built-ins/Object/seal/seal-int32array-object.js
rename to test/built-ins/Object/seal/seal-int32array.js
index a9ecdb491a..2ec07224bd 100644
--- a/test/built-ins/Object/seal/seal-int32array-object.js
+++ b/test/built-ins/Object/seal/seal-int32array.js
@@ -4,7 +4,7 @@
 /*---
 esid: sec-object.seal
 description: >
-    Object.seal an Int32Array object
+    Object.seal Int32Array
 info: |
   If Type(O) is not Object, return O.
   Let status be ? SetIntegrityLevel(O, sealed).
diff --git a/test/built-ins/Object/seal/seal-int8array-object.js b/test/built-ins/Object/seal/seal-int8array.js
similarity index 97%
rename from test/built-ins/Object/seal/seal-int8array-object.js
rename to test/built-ins/Object/seal/seal-int8array.js
index d9054c93fa..03d74bebcf 100644
--- a/test/built-ins/Object/seal/seal-int8array-object.js
+++ b/test/built-ins/Object/seal/seal-int8array.js
@@ -4,7 +4,7 @@
 /*---
 esid: sec-object.seal
 description: >
-    Object.seal an Int8Array object
+    Object.seal Int8Array
 info: |
   If Type(O) is not Object, return O.
   Let status be ? SetIntegrityLevel(O, sealed).
diff --git a/test/built-ins/Object/seal/seal-map-object.js b/test/built-ins/Object/seal/seal-map.js
similarity index 97%
rename from test/built-ins/Object/seal/seal-map-object.js
rename to test/built-ins/Object/seal/seal-map.js
index d04b731bd3..fb248eb5bb 100644
--- a/test/built-ins/Object/seal/seal-map-object.js
+++ b/test/built-ins/Object/seal/seal-map.js
@@ -4,7 +4,7 @@
 /*---
 esid: sec-object.seal
 description: >
-    Object.seal a Map object
+    Object.seal Map
 info: |
   If Type(O) is not Object, return O.
   Let status be ? SetIntegrityLevel(O, sealed).
diff --git a/test/built-ins/Object/seal/seal-nan.js b/test/built-ins/Object/seal/seal-nan.js
new file mode 100644
index 0000000000..52edbfb460
--- /dev/null
+++ b/test/built-ins/Object/seal/seal-nan.js
@@ -0,0 +1,36 @@
+// Copyright (C) 2020 Rick Waldron. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-object.seal
+description: >
+    Object.seal NaN
+info: |
+  If Type(O) is not Object, return O.
+  Let status be ? SetIntegrityLevel(O, sealed).
+
+  SetIntegrityLevel ( O, level )
+
+  Assert: Type(O) is Object.
+  Assert: level is either sealed or frozen.
+  Let status be ? O.[[PreventExtensions]]().
+  If status is false, return false.
+  Let keys be ? O.[[OwnPropertyKeys]]().
+  If level is sealed, then
+    For each element k of keys, do
+      Perform ? DefinePropertyOrThrow(O, k, PropertyDescriptor { [[Configurable]]: false }).
+  Else,
+    Assert: level is frozen.
+    For each element k of keys, do
+      Let currentDesc be ? O.[[GetOwnProperty]](k).
+      If currentDesc is not undefined, then
+        If IsAccessorDescriptor(currentDesc) is true, then
+          Let desc be the PropertyDescriptor { [[Configurable]]: false }.
+        Else,
+          Let desc be the PropertyDescriptor { [[Configurable]]: false, [[Writable]]: false }.
+        Perform ? DefinePropertyOrThrow(O, k, desc).
+  Return true.
+
+---*/
+
+Object.seal(NaN);
diff --git a/test/built-ins/Object/seal/seal-null.js b/test/built-ins/Object/seal/seal-null.js
new file mode 100644
index 0000000000..2478bf2d33
--- /dev/null
+++ b/test/built-ins/Object/seal/seal-null.js
@@ -0,0 +1,36 @@
+// Copyright (C) 2020 Rick Waldron. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-object.seal
+description: >
+    Object.seal null
+info: |
+  If Type(O) is not Object, return O.
+  Let status be ? SetIntegrityLevel(O, sealed).
+
+  SetIntegrityLevel ( O, level )
+
+  Assert: Type(O) is Object.
+  Assert: level is either sealed or frozen.
+  Let status be ? O.[[PreventExtensions]]().
+  If status is false, return false.
+  Let keys be ? O.[[OwnPropertyKeys]]().
+  If level is sealed, then
+    For each element k of keys, do
+      Perform ? DefinePropertyOrThrow(O, k, PropertyDescriptor { [[Configurable]]: false }).
+  Else,
+    Assert: level is frozen.
+    For each element k of keys, do
+      Let currentDesc be ? O.[[GetOwnProperty]](k).
+      If currentDesc is not undefined, then
+        If IsAccessorDescriptor(currentDesc) is true, then
+          Let desc be the PropertyDescriptor { [[Configurable]]: false }.
+        Else,
+          Let desc be the PropertyDescriptor { [[Configurable]]: false, [[Writable]]: false }.
+        Perform ? DefinePropertyOrThrow(O, k, desc).
+  Return true.
+
+---*/
+
+Object.seal(null);
diff --git a/test/built-ins/Object/seal/seal-number-object.js b/test/built-ins/Object/seal/seal-number.js
similarity index 97%
rename from test/built-ins/Object/seal/seal-number-object.js
rename to test/built-ins/Object/seal/seal-number.js
index fb2051af67..3321ab3665 100644
--- a/test/built-ins/Object/seal/seal-number-object.js
+++ b/test/built-ins/Object/seal/seal-number.js
@@ -4,7 +4,7 @@
 /*---
 esid: sec-object.seal
 description: >
-    Object.seal a Number object
+    Object.seal Number
 info: |
   If Type(O) is not Object, return O.
   Let status be ? SetIntegrityLevel(O, sealed).
diff --git a/test/built-ins/Object/seal/seal-object-object.js b/test/built-ins/Object/seal/seal-object.js
similarity index 97%
rename from test/built-ins/Object/seal/seal-object-object.js
rename to test/built-ins/Object/seal/seal-object.js
index 52200fa0db..1a9d49c2d2 100644
--- a/test/built-ins/Object/seal/seal-object-object.js
+++ b/test/built-ins/Object/seal/seal-object.js
@@ -4,7 +4,7 @@
 /*---
 esid: sec-object.seal
 description: >
-    Object.seal an Object object
+    Object.seal Object
 info: |
   If Type(O) is not Object, return O.
   Let status be ? SetIntegrityLevel(O, sealed).
diff --git a/test/built-ins/Object/seal/seal-promise-object.js b/test/built-ins/Object/seal/seal-promise.js
similarity index 97%
rename from test/built-ins/Object/seal/seal-promise-object.js
rename to test/built-ins/Object/seal/seal-promise.js
index b088811c07..487f34ced7 100644
--- a/test/built-ins/Object/seal/seal-promise-object.js
+++ b/test/built-ins/Object/seal/seal-promise.js
@@ -4,7 +4,7 @@
 /*---
 esid: sec-object.seal
 description: >
-    Object.seal a Promise object
+    Object.seal Promise
 info: |
   If Type(O) is not Object, return O.
   Let status be ? SetIntegrityLevel(O, sealed).
diff --git a/test/built-ins/Object/seal/seal-proxy-object.js b/test/built-ins/Object/seal/seal-proxy.js
similarity index 97%
rename from test/built-ins/Object/seal/seal-proxy-object.js
rename to test/built-ins/Object/seal/seal-proxy.js
index 80f3b843bb..674926861a 100644
--- a/test/built-ins/Object/seal/seal-proxy-object.js
+++ b/test/built-ins/Object/seal/seal-proxy.js
@@ -4,7 +4,7 @@
 /*---
 esid: sec-object.seal
 description: >
-    Object.seal a Proxy object
+    Object.seal Proxy
 info: |
   If Type(O) is not Object, return O.
   Let status be ? SetIntegrityLevel(O, sealed).
diff --git a/test/built-ins/Object/seal/seal-rangeerror-object.js b/test/built-ins/Object/seal/seal-rangeerror.js
similarity index 97%
rename from test/built-ins/Object/seal/seal-rangeerror-object.js
rename to test/built-ins/Object/seal/seal-rangeerror.js
index 168af6cae3..e8ad29b57c 100644
--- a/test/built-ins/Object/seal/seal-rangeerror-object.js
+++ b/test/built-ins/Object/seal/seal-rangeerror.js
@@ -4,7 +4,7 @@
 /*---
 esid: sec-object.seal
 description: >
-    Object.seal a RangeError object
+    Object.seal RangeError
 info: |
   If Type(O) is not Object, return O.
   Let status be ? SetIntegrityLevel(O, sealed).
diff --git a/test/built-ins/Object/seal/seal-referenceerror-object.js b/test/built-ins/Object/seal/seal-referenceerror.js
similarity index 96%
rename from test/built-ins/Object/seal/seal-referenceerror-object.js
rename to test/built-ins/Object/seal/seal-referenceerror.js
index 179b62f26a..ae0be532bd 100644
--- a/test/built-ins/Object/seal/seal-referenceerror-object.js
+++ b/test/built-ins/Object/seal/seal-referenceerror.js
@@ -4,7 +4,7 @@
 /*---
 esid: sec-object.seal
 description: >
-    Object.seal a ReferenceError object
+    Object.seal ReferenceError
 info: |
   If Type(O) is not Object, return O.
   Let status be ? SetIntegrityLevel(O, sealed).
diff --git a/test/built-ins/Object/seal/seal-regexp-object.js b/test/built-ins/Object/seal/seal-regexp.js
similarity index 97%
rename from test/built-ins/Object/seal/seal-regexp-object.js
rename to test/built-ins/Object/seal/seal-regexp.js
index e3fcc1da49..bb5b0449d6 100644
--- a/test/built-ins/Object/seal/seal-regexp-object.js
+++ b/test/built-ins/Object/seal/seal-regexp.js
@@ -4,7 +4,7 @@
 /*---
 esid: sec-object.seal
 description: >
-    Object.seal a RegExp object
+    Object.seal RegExp
 info: |
   If Type(O) is not Object, return O.
   Let status be ? SetIntegrityLevel(O, sealed).
diff --git a/test/built-ins/Object/seal/seal-set-object.js b/test/built-ins/Object/seal/seal-set.js
similarity index 97%
rename from test/built-ins/Object/seal/seal-set-object.js
rename to test/built-ins/Object/seal/seal-set.js
index ee19406fe6..b8e1afa0d6 100644
--- a/test/built-ins/Object/seal/seal-set-object.js
+++ b/test/built-ins/Object/seal/seal-set.js
@@ -4,7 +4,7 @@
 /*---
 esid: sec-object.seal
 description: >
-    Object.seal a Set object
+    Object.seal Set
 info: |
   If Type(O) is not Object, return O.
   Let status be ? SetIntegrityLevel(O, sealed).
diff --git a/test/built-ins/Object/seal/seal-sharedarraybuffer-object.js b/test/built-ins/Object/seal/seal-sharedarraybuffer.js
similarity index 96%
rename from test/built-ins/Object/seal/seal-sharedarraybuffer-object.js
rename to test/built-ins/Object/seal/seal-sharedarraybuffer.js
index 2d0f819927..8bd43e470e 100644
--- a/test/built-ins/Object/seal/seal-sharedarraybuffer-object.js
+++ b/test/built-ins/Object/seal/seal-sharedarraybuffer.js
@@ -4,7 +4,7 @@
 /*---
 esid: sec-object.seal
 description: >
-    Object.seal a SharedArrayBuffer object
+    Object.seal SharedArrayBuffer
 info: |
   If Type(O) is not Object, return O.
   Let status be ? SetIntegrityLevel(O, sealed).
diff --git a/test/built-ins/Object/seal/seal-string-object.js b/test/built-ins/Object/seal/seal-string.js
similarity index 97%
rename from test/built-ins/Object/seal/seal-string-object.js
rename to test/built-ins/Object/seal/seal-string.js
index 7ed7b6c950..e65b5cebe2 100644
--- a/test/built-ins/Object/seal/seal-string-object.js
+++ b/test/built-ins/Object/seal/seal-string.js
@@ -4,7 +4,7 @@
 /*---
 esid: sec-object.seal
 description: >
-    Object.seal a String object
+    Object.seal String
 info: |
   If Type(O) is not Object, return O.
   Let status be ? SetIntegrityLevel(O, sealed).
diff --git a/test/built-ins/Object/seal/seal-symbol-object.js b/test/built-ins/Object/seal/seal-symbol.js
similarity index 97%
rename from test/built-ins/Object/seal/seal-symbol-object.js
rename to test/built-ins/Object/seal/seal-symbol.js
index 5253413002..ad4c896e04 100644
--- a/test/built-ins/Object/seal/seal-symbol-object.js
+++ b/test/built-ins/Object/seal/seal-symbol.js
@@ -4,7 +4,7 @@
 /*---
 esid: sec-object.seal
 description: >
-    Object.seal a Symbol object
+    Object.seal Symbol
 info: |
   If Type(O) is not Object, return O.
   Let status be ? SetIntegrityLevel(O, sealed).
diff --git a/test/built-ins/Object/seal/seal-syntaxerror-object.js b/test/built-ins/Object/seal/seal-syntaxerror.js
similarity index 96%
rename from test/built-ins/Object/seal/seal-syntaxerror-object.js
rename to test/built-ins/Object/seal/seal-syntaxerror.js
index 8be18a6655..c834e15b83 100644
--- a/test/built-ins/Object/seal/seal-syntaxerror-object.js
+++ b/test/built-ins/Object/seal/seal-syntaxerror.js
@@ -4,7 +4,7 @@
 /*---
 esid: sec-object.seal
 description: >
-    Object.seal a SyntaxError object
+    Object.seal SyntaxError
 info: |
   If Type(O) is not Object, return O.
   Let status be ? SetIntegrityLevel(O, sealed).
diff --git a/test/built-ins/Object/seal/seal-typeerror-object.js b/test/built-ins/Object/seal/seal-typeerror.js
similarity index 97%
rename from test/built-ins/Object/seal/seal-typeerror-object.js
rename to test/built-ins/Object/seal/seal-typeerror.js
index 68e6710614..75ff572032 100644
--- a/test/built-ins/Object/seal/seal-typeerror-object.js
+++ b/test/built-ins/Object/seal/seal-typeerror.js
@@ -4,7 +4,7 @@
 /*---
 esid: sec-object.seal
 description: >
-    Object.seal a TypeError object
+    Object.seal TypeError
 info: |
   If Type(O) is not Object, return O.
   Let status be ? SetIntegrityLevel(O, sealed).
diff --git a/test/built-ins/Object/seal/seal-uint16array-object.js b/test/built-ins/Object/seal/seal-uint16array.js
similarity index 96%
rename from test/built-ins/Object/seal/seal-uint16array-object.js
rename to test/built-ins/Object/seal/seal-uint16array.js
index 463045b883..aa77593f99 100644
--- a/test/built-ins/Object/seal/seal-uint16array-object.js
+++ b/test/built-ins/Object/seal/seal-uint16array.js
@@ -4,7 +4,7 @@
 /*---
 esid: sec-object.seal
 description: >
-    Object.seal an Uint16Array object
+    Object.seal Uint16Array
 info: |
   If Type(O) is not Object, return O.
   Let status be ? SetIntegrityLevel(O, sealed).
diff --git a/test/built-ins/Object/seal/seal-uint32array-object.js b/test/built-ins/Object/seal/seal-uint32array.js
similarity index 96%
rename from test/built-ins/Object/seal/seal-uint32array-object.js
rename to test/built-ins/Object/seal/seal-uint32array.js
index 4fc1d70acc..abbce14e3a 100644
--- a/test/built-ins/Object/seal/seal-uint32array-object.js
+++ b/test/built-ins/Object/seal/seal-uint32array.js
@@ -4,7 +4,7 @@
 /*---
 esid: sec-object.seal
 description: >
-    Object.seal an Uint32Array object
+    Object.seal Uint32Array
 info: |
   If Type(O) is not Object, return O.
   Let status be ? SetIntegrityLevel(O, sealed).
diff --git a/test/built-ins/Object/seal/seal-uint8array-object.js b/test/built-ins/Object/seal/seal-uint8array.js
similarity index 96%
rename from test/built-ins/Object/seal/seal-uint8array-object.js
rename to test/built-ins/Object/seal/seal-uint8array.js
index 416c04eae5..59c77d6628 100644
--- a/test/built-ins/Object/seal/seal-uint8array-object.js
+++ b/test/built-ins/Object/seal/seal-uint8array.js
@@ -4,7 +4,7 @@
 /*---
 esid: sec-object.seal
 description: >
-    Object.seal an Uint8Array object
+    Object.seal Uint8Array
 info: |
   If Type(O) is not Object, return O.
   Let status be ? SetIntegrityLevel(O, sealed).
diff --git a/test/built-ins/Object/seal/seal-uint8clampedarray-object.js b/test/built-ins/Object/seal/seal-uint8clampedarray.js
similarity index 96%
rename from test/built-ins/Object/seal/seal-uint8clampedarray-object.js
rename to test/built-ins/Object/seal/seal-uint8clampedarray.js
index 119207baec..025930e893 100644
--- a/test/built-ins/Object/seal/seal-uint8clampedarray-object.js
+++ b/test/built-ins/Object/seal/seal-uint8clampedarray.js
@@ -4,7 +4,7 @@
 /*---
 esid: sec-object.seal
 description: >
-    Object.seal an Uint8ClampedArray object
+    Object.seal Uint8ClampedArray
 info: |
   If Type(O) is not Object, return O.
   Let status be ? SetIntegrityLevel(O, sealed).
diff --git a/test/built-ins/Object/seal/seal-undefined.js b/test/built-ins/Object/seal/seal-undefined.js
new file mode 100644
index 0000000000..0971231eff
--- /dev/null
+++ b/test/built-ins/Object/seal/seal-undefined.js
@@ -0,0 +1,36 @@
+// Copyright (C) 2020 Rick Waldron. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-object.seal
+description: >
+    Object.seal undefined
+info: |
+  If Type(O) is not Object, return O.
+  Let status be ? SetIntegrityLevel(O, sealed).
+
+  SetIntegrityLevel ( O, level )
+
+  Assert: Type(O) is Object.
+  Assert: level is either sealed or frozen.
+  Let status be ? O.[[PreventExtensions]]().
+  If status is false, return false.
+  Let keys be ? O.[[OwnPropertyKeys]]().
+  If level is sealed, then
+    For each element k of keys, do
+      Perform ? DefinePropertyOrThrow(O, k, PropertyDescriptor { [[Configurable]]: false }).
+  Else,
+    Assert: level is frozen.
+    For each element k of keys, do
+      Let currentDesc be ? O.[[GetOwnProperty]](k).
+      If currentDesc is not undefined, then
+        If IsAccessorDescriptor(currentDesc) is true, then
+          Let desc be the PropertyDescriptor { [[Configurable]]: false }.
+        Else,
+          Let desc be the PropertyDescriptor { [[Configurable]]: false, [[Writable]]: false }.
+        Perform ? DefinePropertyOrThrow(O, k, desc).
+  Return true.
+
+---*/
+
+Object.seal(undefined);
diff --git a/test/built-ins/Object/seal/seal-urierror-object.js b/test/built-ins/Object/seal/seal-urierror.js
similarity index 97%
rename from test/built-ins/Object/seal/seal-urierror-object.js
rename to test/built-ins/Object/seal/seal-urierror.js
index 88bd2f046a..b69c3faa5b 100644
--- a/test/built-ins/Object/seal/seal-urierror-object.js
+++ b/test/built-ins/Object/seal/seal-urierror.js
@@ -4,7 +4,7 @@
 /*---
 esid: sec-object.seal
 description: >
-    Object.seal an URIError object
+    Object.seal URIError
 info: |
   If Type(O) is not Object, return O.
   Let status be ? SetIntegrityLevel(O, sealed).
diff --git a/test/built-ins/Object/seal/seal-weakmap-object.js b/test/built-ins/Object/seal/seal-weakmap.js
similarity index 97%
rename from test/built-ins/Object/seal/seal-weakmap-object.js
rename to test/built-ins/Object/seal/seal-weakmap.js
index 89d08e0749..34a9dfc3ac 100644
--- a/test/built-ins/Object/seal/seal-weakmap-object.js
+++ b/test/built-ins/Object/seal/seal-weakmap.js
@@ -4,7 +4,7 @@
 /*---
 esid: sec-object.seal
 description: >
-    Object.seal a WeakMap object
+    Object.seal WeakMap
 info: |
   If Type(O) is not Object, return O.
   Let status be ? SetIntegrityLevel(O, sealed).
diff --git a/test/built-ins/Object/seal/seal-weakref-object.js b/test/built-ins/Object/seal/seal-weakref.js
similarity index 97%
rename from test/built-ins/Object/seal/seal-weakref-object.js
rename to test/built-ins/Object/seal/seal-weakref.js
index 435d11f14e..0022162498 100644
--- a/test/built-ins/Object/seal/seal-weakref-object.js
+++ b/test/built-ins/Object/seal/seal-weakref.js
@@ -4,7 +4,7 @@
 /*---
 esid: sec-object.seal
 description: >
-    Object.seal a WeakRef object
+    Object.seal WeakRef
 info: |
   If Type(O) is not Object, return O.
   Let status be ? SetIntegrityLevel(O, sealed).
diff --git a/test/built-ins/Object/seal/seal-weakset-object.js b/test/built-ins/Object/seal/seal-weakset.js
similarity index 97%
rename from test/built-ins/Object/seal/seal-weakset-object.js
rename to test/built-ins/Object/seal/seal-weakset.js
index 3c2626d33a..f81e0c9531 100644
--- a/test/built-ins/Object/seal/seal-weakset-object.js
+++ b/test/built-ins/Object/seal/seal-weakset.js
@@ -4,7 +4,7 @@
 /*---
 esid: sec-object.seal
 description: >
-    Object.seal a WeakSet object
+    Object.seal WeakSet
 info: |
   If Type(O) is not Object, return O.
   Let status be ? SetIntegrityLevel(O, sealed).