diff --git a/test/language/function-code/10.4.3-1-1-s.js b/test/language/function-code/10.4.3-1-1-s.js
index 1ad2ea81f7..b7223ac668 100644
--- a/test/language/function-code/10.4.3-1-1-s.js
+++ b/test/language/function-code/10.4.3-1-1-s.js
@@ -5,11 +5,8 @@
 es5id: 10.4.3-1-1-s
 description: this is not coerced to an object in strict mode (Number)
 flags: [noStrict]
-includes: [runTestCase.js]
 ---*/
 
-function testcase() {
-
   function foo()
   {
     'use strict';
@@ -22,6 +19,5 @@ function testcase() {
   }
 
 
-  return foo.call(1) === 'number' && bar.call(1) === 'object';
- }
-runTestCase(testcase);
+assert.sameValue(foo.call(1), 'number', 'foo.call(1)');
+assert.sameValue(bar.call(1), 'object', 'bar.call(1)');
diff --git a/test/language/function-code/10.4.3-1-10-s.js b/test/language/function-code/10.4.3-1-10-s.js
index 85ad2cd075..98f9af6c68 100644
--- a/test/language/function-code/10.4.3-1-10-s.js
+++ b/test/language/function-code/10.4.3-1-10-s.js
@@ -7,14 +7,11 @@ description: >
     Strict Mode - checking 'this' (FunctionExpression includes strict
     directive prologue)
 flags: [noStrict]
-includes: [runTestCase.js]
 ---*/
 
-function testcase() {
 var f = function () {
     "use strict";
     return typeof this;
 }
-return f() === "undefined";
-}
-runTestCase(testcase);
+
+assert.sameValue(f(), "undefined", 'f()');
diff --git a/test/language/function-code/10.4.3-1-100-s.js b/test/language/function-code/10.4.3-1-100-s.js
index 7613d4ed41..94d6a7ccf1 100644
--- a/test/language/function-code/10.4.3-1-100-s.js
+++ b/test/language/function-code/10.4.3-1-100-s.js
@@ -6,10 +6,8 @@ es5id: 10.4.3-1-100-s
 description: >
     Strict Mode - checking 'this' (strict function passed as arg to
     String.prototype.replace)
-includes: [runTestCase.js]
 ---*/
 
-function testcase() {
 var x = 3;
 
 function f() {
@@ -17,6 +15,6 @@ function f() {
     x = this;
     return "a";
 }
-return ("ab".replace("b", f)==="aa") && (x===undefined);
-}
-runTestCase(testcase);
+
+assert.sameValue("ab".replace("b", f), "aa", '"ab".replace("b", f)');
+assert.sameValue(x, undefined, 'x');
diff --git a/test/language/function-code/10.4.3-1-13-s.js b/test/language/function-code/10.4.3-1-13-s.js
index 13201b2b7f..2234d56bb7 100644
--- a/test/language/function-code/10.4.3-1-13-s.js
+++ b/test/language/function-code/10.4.3-1-13-s.js
@@ -7,11 +7,8 @@ description: >
     Strict Mode - checking 'this' (Function constructor defined within
     strict mode)
 flags: [onlyStrict]
-includes: [runTestCase.js]
 ---*/
 
-function testcase() {
 var f = Function("return typeof this;");
-return f() !== "undefined";
-}
-runTestCase(testcase);
+
+assert.notSameValue(f(), "undefined", 'f()');
diff --git a/test/language/function-code/10.4.3-1-14-s.js b/test/language/function-code/10.4.3-1-14-s.js
index 97a2de70aa..4290d4cb92 100644
--- a/test/language/function-code/10.4.3-1-14-s.js
+++ b/test/language/function-code/10.4.3-1-14-s.js
@@ -7,11 +7,8 @@ description: >
     Strict Mode - checking 'this' (Function constructor includes
     strict directive prologue)
 flags: [noStrict]
-includes: [runTestCase.js]
 ---*/
 
-function testcase() {
 var f = Function("\"use strict\";\nreturn typeof this;");
-return f() === "undefined";
-}
-runTestCase(testcase);
+
+assert.sameValue(f(), "undefined", 'f()');
diff --git a/test/language/function-code/10.4.3-1-15-s.js b/test/language/function-code/10.4.3-1-15-s.js
index 0564197cf3..4908200cd5 100644
--- a/test/language/function-code/10.4.3-1-15-s.js
+++ b/test/language/function-code/10.4.3-1-15-s.js
@@ -7,11 +7,8 @@ description: >
     Strict Mode - checking 'this' (New'ed Function constructor defined
     within strict mode)
 flags: [onlyStrict]
-includes: [runTestCase.js]
 ---*/
 
-function testcase() {
 var f = new Function("return typeof this;");
-return f() !== "undefined";
-}
-runTestCase(testcase);
+
+assert.notSameValue(f(), "undefined", 'f()');
diff --git a/test/language/function-code/10.4.3-1-16-s.js b/test/language/function-code/10.4.3-1-16-s.js
index a443e6370a..0aa10ebcf9 100644
--- a/test/language/function-code/10.4.3-1-16-s.js
+++ b/test/language/function-code/10.4.3-1-16-s.js
@@ -7,11 +7,8 @@ description: >
     Strict Mode - checking 'this' (New'ed Function constructor
     includes strict directive prologue)
 flags: [noStrict]
-includes: [runTestCase.js]
 ---*/
 
-function testcase() {
 var f = new Function("\"use strict\";\nreturn typeof this;");
-return f() === "undefined";
-}
-runTestCase(testcase);
+
+assert.sameValue(f(), "undefined", 'f()');
diff --git a/test/language/function-code/10.4.3-1-2-s.js b/test/language/function-code/10.4.3-1-2-s.js
index ad0bfe1d3e..fea410f049 100644
--- a/test/language/function-code/10.4.3-1-2-s.js
+++ b/test/language/function-code/10.4.3-1-2-s.js
@@ -5,11 +5,8 @@
 es5id: 10.4.3-1-2-s
 description: this is not coerced to an object in strict mode (string)
 flags: [noStrict]
-includes: [runTestCase.js]
 ---*/
 
-function testcase() {
-
   function foo()
   {
     'use strict';
@@ -22,6 +19,5 @@ function testcase() {
   }
 
 
-  return foo.call('1') === 'string' && bar.call('1') === 'object';
- }
-runTestCase(testcase);
+assert.sameValue(foo.call('1'), 'string', 'foo.call("1")');
+assert.sameValue(bar.call('1'), 'object', 'bar.call("1")');
diff --git a/test/language/function-code/10.4.3-1-21-s.js b/test/language/function-code/10.4.3-1-21-s.js
index 78d622a857..5182c995dd 100644
--- a/test/language/function-code/10.4.3-1-21-s.js
+++ b/test/language/function-code/10.4.3-1-21-s.js
@@ -7,15 +7,12 @@ description: >
     Strict Mode - checking 'this' (New'ed object from
     FunctionDeclaration defined within strict mode)
 flags: [onlyStrict]
-includes:
-    - runTestCase.js
-    - fnGlobalObject.js
+includes: [fnGlobalObject.js]
 ---*/
 
-function testcase() {
 function f() {
     return this;
 }
-return ( (new f())!==fnGlobalObject()) && (typeof (new f()) !== "undefined");
-}
-runTestCase(testcase);
+
+assert.notSameValue((new f()), fnGlobalObject(), '(new f())');
+assert.notSameValue(typeof (new f()), "undefined", 'typeof (new f())');
diff --git a/test/language/function-code/10.4.3-1-22-s.js b/test/language/function-code/10.4.3-1-22-s.js
index 8a2e772b7a..2e836e2ecf 100644
--- a/test/language/function-code/10.4.3-1-22-s.js
+++ b/test/language/function-code/10.4.3-1-22-s.js
@@ -7,17 +7,13 @@ description: >
     Strict Mode - checking 'this' (New'ed object from
     FunctionDeclaration includes strict directive prologue)
 flags: [noStrict]
-includes:
-    - runTestCase.js
-    - fnGlobalObject.js
+includes: [fnGlobalObject.js]
 ---*/
 
-function testcase() {
 function f() {
     "use strict";
     return this;
 }
-return ( (new f())!==fnGlobalObject()) && (typeof (new f()) !== "undefined");
 
-}
-runTestCase(testcase);
+assert.notSameValue((new f()), fnGlobalObject(), '(new f())');
+assert.notSameValue(typeof (new f()), "undefined", 'typeof (new f())');
diff --git a/test/language/function-code/10.4.3-1-23-s.js b/test/language/function-code/10.4.3-1-23-s.js
index bf909a8ff9..68ca1f1597 100644
--- a/test/language/function-code/10.4.3-1-23-s.js
+++ b/test/language/function-code/10.4.3-1-23-s.js
@@ -7,16 +7,12 @@ description: >
     Strict Mode - checking 'this' (New'ed object from
     FunctionExpression defined within strict mode)
 flags: [onlyStrict]
-includes:
-    - runTestCase.js
-    - fnGlobalObject.js
+includes: [fnGlobalObject.js]
 ---*/
 
-function testcase() {
 var f = function () {
     return this;
 }
-return ( (new f())!==fnGlobalObject()) && (typeof (new f()) !== "undefined");
 
-}
-runTestCase(testcase);
+assert.notSameValue((new f()), fnGlobalObject(), '(new f())');
+assert.notSameValue(typeof (new f()), "undefined", 'typeof (new f())');
diff --git a/test/language/function-code/10.4.3-1-24-s.js b/test/language/function-code/10.4.3-1-24-s.js
index a30f3bd310..1f42d08f8e 100644
--- a/test/language/function-code/10.4.3-1-24-s.js
+++ b/test/language/function-code/10.4.3-1-24-s.js
@@ -7,16 +7,13 @@ description: >
     Strict Mode - checking 'this' (New'ed object from
     FunctionExpression includes strict directive prologue)
 flags: [noStrict]
-includes:
-    - runTestCase.js
-    - fnGlobalObject.js
+includes: [fnGlobalObject.js]
 ---*/
 
-function testcase() {
 var f = function () {
     "use strict";
     return this;
 }
-return ( (new f())!==fnGlobalObject()) && (typeof (new f()) !== "undefined");
-}
-runTestCase(testcase);
+
+assert.notSameValue((new f()), fnGlobalObject(), '(new f())');
+assert.notSameValue(typeof (new f()), "undefined", 'typeof (new f())');
diff --git a/test/language/function-code/10.4.3-1-25-s.js b/test/language/function-code/10.4.3-1-25-s.js
index 2b92f82ac6..7159330441 100644
--- a/test/language/function-code/10.4.3-1-25-s.js
+++ b/test/language/function-code/10.4.3-1-25-s.js
@@ -7,15 +7,12 @@ description: >
     Strict Mode - checking 'this' (New'ed object from Anonymous
     FunctionExpression defined within strict mode)
 flags: [onlyStrict]
-includes:
-    - runTestCase.js
-    - fnGlobalObject.js
+includes: [fnGlobalObject.js]
 ---*/
 
-function testcase() {
 var obj = new (function () {
     return this;
 });
-return (obj !== fnGlobalObject()) && ((typeof obj) !== "undefined");
-}
-runTestCase(testcase);
+
+assert.notSameValue(obj, fnGlobalObject(), 'obj');
+assert.notSameValue((typeof obj), "undefined", '(typeof obj)');
diff --git a/test/language/function-code/10.4.3-1-26-s.js b/test/language/function-code/10.4.3-1-26-s.js
index 12533e37ea..fd7135282a 100644
--- a/test/language/function-code/10.4.3-1-26-s.js
+++ b/test/language/function-code/10.4.3-1-26-s.js
@@ -7,16 +7,13 @@ description: >
     Strict Mode - checking 'this' (New'ed object from Anonymous
     FunctionExpression includes strict directive prologue)
 flags: [noStrict]
-includes:
-    - runTestCase.js
-    - fnGlobalObject.js
+includes: [fnGlobalObject.js]
 ---*/
 
-function testcase() {
 var obj = new (function () {
     "use strict";
     return this;
 });
-return (obj !== fnGlobalObject()) && ((typeof obj) !== "undefined");
-}
-runTestCase(testcase);
+
+assert.notSameValue(obj, fnGlobalObject(), 'obj');
+assert.notSameValue((typeof obj), "undefined", '(typeof obj)');
diff --git a/test/language/function-code/10.4.3-1-27-s.js b/test/language/function-code/10.4.3-1-27-s.js
index 41b6c29fa8..1e23f0e6b7 100644
--- a/test/language/function-code/10.4.3-1-27-s.js
+++ b/test/language/function-code/10.4.3-1-27-s.js
@@ -7,16 +7,13 @@ description: >
     Strict Mode - checking 'this' (FunctionDeclaration defined within
     a FunctionDeclaration inside strict mode)
 flags: [onlyStrict]
-includes: [runTestCase.js]
 ---*/
 
-function testcase() {
 function f1() {
     function f() {
         return typeof this;
     }
     return (f()==="undefined") && ((typeof this)==="undefined");
 }
-return f1();
-}
-runTestCase(testcase);
+
+assert(f1(), 'f1() !== true');
diff --git a/test/language/function-code/10.4.3-1-28-s.js b/test/language/function-code/10.4.3-1-28-s.js
index 3dd3e80e40..d75ddd6d17 100644
--- a/test/language/function-code/10.4.3-1-28-s.js
+++ b/test/language/function-code/10.4.3-1-28-s.js
@@ -7,16 +7,13 @@ description: >
     Strict Mode - checking 'this' (FunctionExpression defined within a
     FunctionDeclaration inside strict mode)
 flags: [onlyStrict]
-includes: [runTestCase.js]
 ---*/
 
-function testcase() {
 function f1() {
     var f = function () {
         return typeof this;
     }
     return (f()==="undefined") && ((typeof this)==="undefined");
 }
-return f1();
-}
-runTestCase(testcase);
+
+assert(f1(), 'f1() !== true');
diff --git a/test/language/function-code/10.4.3-1-29-s.js b/test/language/function-code/10.4.3-1-29-s.js
index d975eb41fa..0204d703b0 100644
--- a/test/language/function-code/10.4.3-1-29-s.js
+++ b/test/language/function-code/10.4.3-1-29-s.js
@@ -7,15 +7,12 @@ description: >
     Strict Mode - checking 'this' (Anonymous FunctionExpression
     defined within a FunctionDeclaration inside strict mode)
 flags: [onlyStrict]
-includes: [runTestCase.js]
 ---*/
 
-function testcase() {
 function f1() {
     return ((function () {
         return typeof this;
     })()==="undefined") && ((typeof this)==="undefined");
 }
-return f1();
-}
-runTestCase(testcase);
+
+assert(f1(), 'f1() !== true');
diff --git a/test/language/function-code/10.4.3-1-3-s.js b/test/language/function-code/10.4.3-1-3-s.js
index a3c6a42c24..e832c4a4d6 100644
--- a/test/language/function-code/10.4.3-1-3-s.js
+++ b/test/language/function-code/10.4.3-1-3-s.js
@@ -5,11 +5,8 @@
 es5id: 10.4.3-1-3-s
 description: this is not coerced to an object in strict mode (undefined)
 flags: [noStrict]
-includes: [runTestCase.js]
 ---*/
 
-function testcase() {
-
   function foo()
   {
     'use strict';
@@ -20,6 +17,6 @@ function testcase() {
   {
     return typeof(this);
   }
-  return foo.call(undefined) === 'undefined' && bar.call() === 'object';
- }
-runTestCase(testcase);
+
+assert.sameValue(foo.call(undefined), 'undefined', 'foo.call(undefined)');
+assert.sameValue(bar.call(), 'object', 'bar.call()');
diff --git a/test/language/function-code/10.4.3-1-30-s.js b/test/language/function-code/10.4.3-1-30-s.js
index 5969bd109c..1ff3d68353 100644
--- a/test/language/function-code/10.4.3-1-30-s.js
+++ b/test/language/function-code/10.4.3-1-30-s.js
@@ -7,16 +7,13 @@ description: >
     Strict Mode - checking 'this' (FunctionDeclaration defined within
     a FunctionExpression inside strict mode)
 flags: [onlyStrict]
-includes: [runTestCase.js]
 ---*/
 
-function testcase() {
 var f1 = function () {
     function f() {
         return typeof this;
     }
     return (f()==="undefined") && ((typeof this)==="undefined");
 }
-return f1();
-}
-runTestCase(testcase);
+
+assert(f1(), 'f1() !== true');
diff --git a/test/language/function-code/10.4.3-1-31-s.js b/test/language/function-code/10.4.3-1-31-s.js
index 6bd24e99c3..5b8a33cd68 100644
--- a/test/language/function-code/10.4.3-1-31-s.js
+++ b/test/language/function-code/10.4.3-1-31-s.js
@@ -7,16 +7,13 @@ description: >
     Strict Mode - checking 'this' (FunctionExpression defined within a
     FunctionExpression inside strict mode)
 flags: [onlyStrict]
-includes: [runTestCase.js]
 ---*/
 
-function testcase() {
 var f1 = function () {
     var f = function () {
         return typeof this;
     }
     return (f()==="undefined") && ((typeof this)==="undefined");
 }
-return f1();
-}
-runTestCase(testcase);
+
+assert(f1(), 'f1() !== true');
diff --git a/test/language/function-code/10.4.3-1-32-s.js b/test/language/function-code/10.4.3-1-32-s.js
index d095b0a2f9..eb64609462 100644
--- a/test/language/function-code/10.4.3-1-32-s.js
+++ b/test/language/function-code/10.4.3-1-32-s.js
@@ -7,15 +7,12 @@ description: >
     Strict Mode - checking 'this' (Anonymous FunctionExpression
     defined within a FunctionExpression inside strict mode)
 flags: [onlyStrict]
-includes: [runTestCase.js]
 ---*/
 
-function testcase() {
 var f1 = function () {
     return ((function () {
         return typeof this;
     })()==="undefined") && ((typeof this)==="undefined");
 }
-return f1();
-}
-runTestCase(testcase);
+
+assert(f1(), 'f1() !== true');
diff --git a/test/language/function-code/10.4.3-1-36-s.js b/test/language/function-code/10.4.3-1-36-s.js
index d50999a594..c58db747cc 100644
--- a/test/language/function-code/10.4.3-1-36-s.js
+++ b/test/language/function-code/10.4.3-1-36-s.js
@@ -7,10 +7,8 @@ description: >
     Strict Mode - checking 'this' (FunctionDeclaration defined within
     a FunctionDeclaration with a strict directive prologue)
 flags: [noStrict]
-includes: [runTestCase.js]
 ---*/
 
-function testcase() {
 function f1() {
     "use strict";
     function f() {
@@ -18,6 +16,5 @@ function f1() {
     }
     return (f()==="undefined") && ((typeof this)==="undefined");
 }
-return f1();
-}
-runTestCase(testcase);
+
+assert(f1(), 'f1() !== true');
diff --git a/test/language/function-code/10.4.3-1-37-s.js b/test/language/function-code/10.4.3-1-37-s.js
index 79e2a3e484..539d7aa436 100644
--- a/test/language/function-code/10.4.3-1-37-s.js
+++ b/test/language/function-code/10.4.3-1-37-s.js
@@ -7,10 +7,8 @@ description: >
     Strict Mode - checking 'this' (FunctionExpression defined within a
     FunctionDeclaration with a strict directive prologue)
 flags: [noStrict]
-includes: [runTestCase.js]
 ---*/
 
-function testcase() {
 function f1() {
     "use strict";
     var f = function () {
@@ -18,6 +16,5 @@ function f1() {
     }
     return (f()==="undefined") && ((typeof this)==="undefined");
 }
-return f1();
-}
-runTestCase(testcase);
+
+assert(f1(), 'f1() !== true');
diff --git a/test/language/function-code/10.4.3-1-38-s.js b/test/language/function-code/10.4.3-1-38-s.js
index 80bab409ab..4d4cac2f7d 100644
--- a/test/language/function-code/10.4.3-1-38-s.js
+++ b/test/language/function-code/10.4.3-1-38-s.js
@@ -8,16 +8,13 @@ description: >
     defined within a FunctionDeclaration with a strict directive
     prologue)
 flags: [noStrict]
-includes: [runTestCase.js]
 ---*/
 
-function testcase() {
 function f1() {
     "use strict";
     return ((function () {
         return typeof this;
     })()==="undefined") && ((typeof this)==="undefined");
 }
-return f1();
-}
-runTestCase(testcase);
+
+assert(f1(), 'f1() !== true');
diff --git a/test/language/function-code/10.4.3-1-39-s.js b/test/language/function-code/10.4.3-1-39-s.js
index 2b886d01e4..90dfb50f27 100644
--- a/test/language/function-code/10.4.3-1-39-s.js
+++ b/test/language/function-code/10.4.3-1-39-s.js
@@ -7,10 +7,8 @@ description: >
     Strict Mode - checking 'this' (FunctionDeclaration defined within
     a FunctionExpression with a strict directive prologue)
 flags: [noStrict]
-includes: [runTestCase.js]
 ---*/
 
-function testcase() {
 var f1 = function () {
     "use strict";
     function f() {
@@ -18,6 +16,5 @@ var f1 = function () {
     }
     return (f()==="undefined") && ((typeof this)==="undefined");
 }
-return f1();
-}
-runTestCase(testcase);
+
+assert(f1(), 'f1() !== true');
diff --git a/test/language/function-code/10.4.3-1-4-s.js b/test/language/function-code/10.4.3-1-4-s.js
index 6de018f5c4..e942576a01 100644
--- a/test/language/function-code/10.4.3-1-4-s.js
+++ b/test/language/function-code/10.4.3-1-4-s.js
@@ -5,11 +5,8 @@
 es5id: 10.4.3-1-4-s
 description: this is not coerced to an object in strict mode (boolean)
 flags: [noStrict]
-includes: [runTestCase.js]
 ---*/
 
-function testcase() {
-
   function foo()
   {
     'use strict';
@@ -22,6 +19,5 @@ function testcase() {
   }
 
 
-  return foo.call(true) === 'boolean' && bar.call(true) === 'object';
- }
-runTestCase(testcase);
+assert.sameValue(foo.call(true), 'boolean', 'foo.call(true)');
+assert.sameValue(bar.call(true), 'object', 'bar.call(true)');
diff --git a/test/language/function-code/10.4.3-1-40-s.js b/test/language/function-code/10.4.3-1-40-s.js
index d71e43b5ab..2eac1d7859 100644
--- a/test/language/function-code/10.4.3-1-40-s.js
+++ b/test/language/function-code/10.4.3-1-40-s.js
@@ -7,10 +7,8 @@ description: >
     Strict Mode - checking 'this' (FunctionExpression defined within a
     FunctionExpression with a strict directive prologue)
 flags: [noStrict]
-includes: [runTestCase.js]
 ---*/
 
-function testcase() {
 var f1 = function () {
     "use strict";
     var f = function () {
@@ -18,6 +16,5 @@ var f1 = function () {
     }
     return (f()==="undefined") && ((typeof this)==="undefined");
 }
-return f1();
-}
-runTestCase(testcase);
+
+assert(f1(), 'f1() !== true');
diff --git a/test/language/function-code/10.4.3-1-41-s.js b/test/language/function-code/10.4.3-1-41-s.js
index 4a9b9386f9..16ca1bb7ee 100644
--- a/test/language/function-code/10.4.3-1-41-s.js
+++ b/test/language/function-code/10.4.3-1-41-s.js
@@ -8,16 +8,13 @@ description: >
     defined within a FunctionExpression with a strict directive
     prologue)
 flags: [noStrict]
-includes: [runTestCase.js]
 ---*/
 
-function testcase() {
 var f1 = function () {
     "use strict";
     return ((function () {
         return typeof this;
     })()==="undefined") && ((typeof this)==="undefined");
 }
-return f1();
-}
-runTestCase(testcase);
+
+assert(f1(), 'f1() !== true');
diff --git a/test/language/function-code/10.4.3-1-45-s.js b/test/language/function-code/10.4.3-1-45-s.js
index 3e46e67e80..5d8577b93e 100644
--- a/test/language/function-code/10.4.3-1-45-s.js
+++ b/test/language/function-code/10.4.3-1-45-s.js
@@ -7,12 +7,9 @@ description: >
     Strict Mode - checking 'this' (FunctionDeclaration with a strict
     directive prologue defined within a FunctionDeclaration)
 flags: [noStrict]
-includes:
-    - runTestCase.js
-    - fnGlobalObject.js
+includes: [fnGlobalObject.js]
 ---*/
 
-function testcase() {
 function f1() {
     function f() {
         "use strict";
@@ -20,6 +17,5 @@ function f1() {
     }
     return (f()==="undefined") && (this===fnGlobalObject());
 }
-return f1();
-}
-runTestCase(testcase);
+
+assert(f1(), 'f1() !== true');
diff --git a/test/language/function-code/10.4.3-1-46-s.js b/test/language/function-code/10.4.3-1-46-s.js
index af4a06c4b5..a1b41beec9 100644
--- a/test/language/function-code/10.4.3-1-46-s.js
+++ b/test/language/function-code/10.4.3-1-46-s.js
@@ -7,12 +7,9 @@ description: >
     Strict Mode - checking 'this' (FunctionExpression with a strict
     directive prologue defined within a FunctionDeclaration)
 flags: [noStrict]
-includes:
-    - runTestCase.js
-    - fnGlobalObject.js
+includes: [fnGlobalObject.js]
 ---*/
 
-function testcase() {
 function f1() {
     var f = function () {
         "use strict";
@@ -20,6 +17,5 @@ function f1() {
     }
     return (f()==="undefined") && (this===fnGlobalObject());
 }
-return f1();
-}
-runTestCase(testcase);
+
+assert(f1(), 'f1() !== true');
diff --git a/test/language/function-code/10.4.3-1-47-s.js b/test/language/function-code/10.4.3-1-47-s.js
index 10f6b26268..190a71b4b8 100644
--- a/test/language/function-code/10.4.3-1-47-s.js
+++ b/test/language/function-code/10.4.3-1-47-s.js
@@ -7,18 +7,14 @@ description: >
     Strict Mode - checking 'this' (Anonymous FunctionExpression with a
     strict directive prologue defined within a FunctionDeclaration)
 flags: [noStrict]
-includes:
-    - runTestCase.js
-    - fnGlobalObject.js
+includes: [fnGlobalObject.js]
 ---*/
 
-function testcase() {
 function f1() {
     return ((function () {
         "use strict";
         return typeof this;
     })()==="undefined") && (this===fnGlobalObject());
 }
-return f1();
-}
-runTestCase(testcase);
+
+assert(f1(), 'f1() !== true');
diff --git a/test/language/function-code/10.4.3-1-48-s.js b/test/language/function-code/10.4.3-1-48-s.js
index 9fe714908e..d71463da11 100644
--- a/test/language/function-code/10.4.3-1-48-s.js
+++ b/test/language/function-code/10.4.3-1-48-s.js
@@ -7,12 +7,9 @@ description: >
     Strict Mode - checking 'this' (FunctionDeclaration with a strict
     directive prologue defined within a FunctionExpression)
 flags: [noStrict]
-includes:
-    - runTestCase.js
-    - fnGlobalObject.js
+includes: [fnGlobalObject.js]
 ---*/
 
-function testcase() {
 var f1 = function () {
     function f() {
         "use strict";
@@ -20,6 +17,5 @@ var f1 = function () {
     }
     return (f()==="undefined") && (this===fnGlobalObject());
 }
-return f1();
-}
-runTestCase(testcase);
+
+assert(f1(), 'f1() !== true');
diff --git a/test/language/function-code/10.4.3-1-49-s.js b/test/language/function-code/10.4.3-1-49-s.js
index ed3e398417..ecd6d827e4 100644
--- a/test/language/function-code/10.4.3-1-49-s.js
+++ b/test/language/function-code/10.4.3-1-49-s.js
@@ -7,12 +7,9 @@ description: >
     Strict Mode - checking 'this' (FunctionExpression with a strict
     directive prologue defined within a FunctionExpression)
 flags: [noStrict]
-includes:
-    - runTestCase.js
-    - fnGlobalObject.js
+includes: [fnGlobalObject.js]
 ---*/
 
-function testcase() {
 var f1 = function () {
     var f = function () {
         "use strict";
@@ -20,6 +17,5 @@ var f1 = function () {
     }
     return (f()==="undefined") && (this===fnGlobalObject());
 }
-return f1();
-}
-runTestCase(testcase);
+
+assert(f1(), 'f1() !== true');
diff --git a/test/language/function-code/10.4.3-1-5-s.js b/test/language/function-code/10.4.3-1-5-s.js
index 37b40c7d21..d3ea4d11be 100644
--- a/test/language/function-code/10.4.3-1-5-s.js
+++ b/test/language/function-code/10.4.3-1-5-s.js
@@ -4,11 +4,8 @@
 /*---
 es5id: 10.4.3-1-5-s
 description: this is not coerced to an object (function)
-includes: [runTestCase.js]
 ---*/
 
-function testcase() {
-
   function foo()
   {
     'use strict';
@@ -24,6 +21,5 @@ function testcase() {
   {
   }
 
-  return foo.call(foobar) === 'function' && bar.call(foobar) === 'function';
- }
-runTestCase(testcase);
+assert.sameValue(foo.call(foobar), 'function', 'foo.call(foobar)');
+assert.sameValue(bar.call(foobar), 'function', 'bar.call(foobar)');
diff --git a/test/language/function-code/10.4.3-1-50-s.js b/test/language/function-code/10.4.3-1-50-s.js
index 96e85d984d..f7e864c20a 100644
--- a/test/language/function-code/10.4.3-1-50-s.js
+++ b/test/language/function-code/10.4.3-1-50-s.js
@@ -7,18 +7,14 @@ description: >
     Strict Mode - checking 'this' (Anonymous FunctionExpression with a
     strict directive prologue defined within a FunctionExpression)
 flags: [noStrict]
-includes:
-    - runTestCase.js
-    - fnGlobalObject.js
+includes: [fnGlobalObject.js]
 ---*/
 
-function testcase() {
 var f1 = function () {
     return ((function () {
         "use strict";
         return typeof this;
     })()==="undefined") && (this===fnGlobalObject());
 }
-return f1();
-}
-runTestCase(testcase);
+
+assert(f1(), 'f1() !== true');
diff --git a/test/language/function-code/10.4.3-1-54-s.js b/test/language/function-code/10.4.3-1-54-s.js
index d1b47bdefe..592f5ef35d 100644
--- a/test/language/function-code/10.4.3-1-54-s.js
+++ b/test/language/function-code/10.4.3-1-54-s.js
@@ -5,11 +5,8 @@
 es5id: 10.4.3-1-54-s
 description: >
     checking 'this' (Literal getter)
-includes: [runTestCase.js]
 ---*/
 
-function testcase() {
 var o = { get foo() { return this; } }
-return o.foo===o;
-}
-runTestCase(testcase);
+
+assert.sameValue(o.foo, o, 'o.foo');
diff --git a/test/language/function-code/10.4.3-1-55-s.js b/test/language/function-code/10.4.3-1-55-s.js
index b5039b1ec7..79cc24c61e 100644
--- a/test/language/function-code/10.4.3-1-55-s.js
+++ b/test/language/function-code/10.4.3-1-55-s.js
@@ -6,11 +6,8 @@ es5id: 10.4.3-1-55-s
 description: >
     Strict Mode - checking 'this' (Literal getter includes strict
     directive prologue)
-includes: [runTestCase.js]
 ---*/
 
-function testcase() {
 var o = { get foo() { "use strict"; return this; } }
-return o.foo===o;
-}
-runTestCase(testcase);
+
+assert.sameValue(o.foo, o, 'o.foo');
diff --git a/test/language/function-code/10.4.3-1-56-s.js b/test/language/function-code/10.4.3-1-56-s.js
index 358b6a23bd..c70fde0960 100644
--- a/test/language/function-code/10.4.3-1-56-s.js
+++ b/test/language/function-code/10.4.3-1-56-s.js
@@ -5,13 +5,10 @@
 es5id: 10.4.3-1-56-s
 description: >
     checking 'this' (Literal setter)
-includes: [runTestCase.js]
 ---*/
 
-function testcase() {
 var x = 2;
 var o = { set foo(stuff) { x=this; } }
 o.foo = 3;
-return x===o;
-}
-runTestCase(testcase);
+
+assert.sameValue(x, o, 'x');
diff --git a/test/language/function-code/10.4.3-1-57-s.js b/test/language/function-code/10.4.3-1-57-s.js
index 3ead0e7afc..8bae8e218b 100644
--- a/test/language/function-code/10.4.3-1-57-s.js
+++ b/test/language/function-code/10.4.3-1-57-s.js
@@ -5,13 +5,10 @@
 es5id: 10.4.3-1-57-s
 description: >
     checking 'this' (Literal setter includes strict directive prologue)
-includes: [runTestCase.js]
 ---*/
 
-function testcase() {
 var x = 2;
 var o = { set foo(stuff) { "use strict"; x=this;  } }
 o.foo = 3;
-return x===o;
-}
-runTestCase(testcase);
+
+assert.sameValue(x, o, 'x');
diff --git a/test/language/function-code/10.4.3-1-58-s.js b/test/language/function-code/10.4.3-1-58-s.js
index 8b9811dcde..f4be2ff9bd 100644
--- a/test/language/function-code/10.4.3-1-58-s.js
+++ b/test/language/function-code/10.4.3-1-58-s.js
@@ -5,12 +5,9 @@
 es5id: 10.4.3-1-58-s
 description: >
     checking 'this' (Injected getter)
-includes: [runTestCase.js]
 ---*/
 
-function testcase() {
 var o = {};
 Object.defineProperty(o, "foo",  { get: function() { return this; } });
-return o.foo===o;
-}
-runTestCase(testcase);
+
+assert.sameValue(o.foo, o, 'o.foo');
diff --git a/test/language/function-code/10.4.3-1-59-s.js b/test/language/function-code/10.4.3-1-59-s.js
index 94cb74ea58..8814d38a52 100644
--- a/test/language/function-code/10.4.3-1-59-s.js
+++ b/test/language/function-code/10.4.3-1-59-s.js
@@ -5,12 +5,9 @@
 es5id: 10.4.3-1-59-s
 description: >
     checking 'this' (Injected getter includes strict directive prologue)
-includes: [runTestCase.js]
 ---*/
 
-function testcase() {
 var o = {};
 Object.defineProperty(o, "foo", { get: function() { "use strict"; return this; } });
-return o.foo===o;
-}
-runTestCase(testcase);
+
+assert.sameValue(o.foo, o, 'o.foo');
diff --git a/test/language/function-code/10.4.3-1-60-s.js b/test/language/function-code/10.4.3-1-60-s.js
index 29814cf29b..4555c31fbe 100644
--- a/test/language/function-code/10.4.3-1-60-s.js
+++ b/test/language/function-code/10.4.3-1-60-s.js
@@ -5,14 +5,11 @@
 es5id: 10.4.3-1-60-s
 description: >
     checking 'this' (Injected setter)
-includes: [runTestCase.js]
 ---*/
 
-function testcase() {
 var o = {};
 var x = 2;
 Object.defineProperty(o, "foo", { set: function(stuff) { x=this; } });
 o.foo = 3;
-return x===o;
-}
-runTestCase(testcase);
+
+assert.sameValue(x, o, 'x');
diff --git a/test/language/function-code/10.4.3-1-61-s.js b/test/language/function-code/10.4.3-1-61-s.js
index fe3c948505..c579bf3cb2 100644
--- a/test/language/function-code/10.4.3-1-61-s.js
+++ b/test/language/function-code/10.4.3-1-61-s.js
@@ -5,14 +5,11 @@
 es5id: 10.4.3-1-61-s
 description: >
     checking 'this' (Injected setter includes strict directive prologue)
-includes: [runTestCase.js]
 ---*/
 
-function testcase() {
 var o = {};
 var x = 2;
 Object.defineProperty(o, "foo", { set: function(stuff) { "use strict"; x=this; } });
 o.foo = 3;
-return x===o;
-}
-runTestCase(testcase);
+
+assert.sameValue(x, o, 'x');
diff --git a/test/language/function-code/10.4.3-1-62-s.js b/test/language/function-code/10.4.3-1-62-s.js
index 564a630840..d67b262822 100644
--- a/test/language/function-code/10.4.3-1-62-s.js
+++ b/test/language/function-code/10.4.3-1-62-s.js
@@ -6,12 +6,9 @@ es5id: 10.4.3-1-62-s
 description: >
     checking 'this' (strict function declaration called by non-strict function
     declaration)
-includes: [runTestCase.js]
 ---*/
 
-function testcase() {
 function f() { "use strict"; return this;};
 function foo() { return f();}
-return foo()===undefined;
-}
-runTestCase(testcase);
+
+assert.sameValue(foo(), undefined, 'foo()');
diff --git a/test/language/function-code/10.4.3-1-66-s.js b/test/language/function-code/10.4.3-1-66-s.js
index 7da2d21f75..cb49b60ac4 100644
--- a/test/language/function-code/10.4.3-1-66-s.js
+++ b/test/language/function-code/10.4.3-1-66-s.js
@@ -6,11 +6,8 @@ es5id: 10.4.3-1-66-s
 description: >
     checking 'this' (strict function declaration called by
     Function.prototype.apply())
-includes: [runTestCase.js]
 ---*/
 
-function testcase() {
 function f() { "use strict"; return this===undefined;};
-return f.apply();
-}
-runTestCase(testcase);
+
+assert(f.apply(), 'f.apply() !== true');
diff --git a/test/language/function-code/10.4.3-1-67-s.js b/test/language/function-code/10.4.3-1-67-s.js
index 32b1fab38e..64df9085a5 100644
--- a/test/language/function-code/10.4.3-1-67-s.js
+++ b/test/language/function-code/10.4.3-1-67-s.js
@@ -6,11 +6,8 @@ es5id: 10.4.3-1-67-s
 description: >
     checking 'this' (strict function declaration called by
     Function.prototype.apply(null))
-includes: [runTestCase.js]
 ---*/
 
-function testcase() {
 function f() { "use strict"; return this===null;};
-return f.apply(null);
-}
-runTestCase(testcase);
+
+assert(f.apply(null), 'f.apply(null) !== true');
diff --git a/test/language/function-code/10.4.3-1-68-s.js b/test/language/function-code/10.4.3-1-68-s.js
index 1eb1e93b25..73e1ff59c1 100644
--- a/test/language/function-code/10.4.3-1-68-s.js
+++ b/test/language/function-code/10.4.3-1-68-s.js
@@ -6,11 +6,8 @@ es5id: 10.4.3-1-68-s
 description: >
     checking 'this' (strict function declaration called by
     Function.prototype.apply(undefined))
-includes: [runTestCase.js]
 ---*/
 
-function testcase() {
 function f() { "use strict"; return this===undefined;};
-return f.apply(undefined);
-}
-runTestCase(testcase);
+
+assert(f.apply(undefined), 'f.apply(undefined) !== true');
diff --git a/test/language/function-code/10.4.3-1-69-s.js b/test/language/function-code/10.4.3-1-69-s.js
index 4b65b33774..48d20a8676 100644
--- a/test/language/function-code/10.4.3-1-69-s.js
+++ b/test/language/function-code/10.4.3-1-69-s.js
@@ -6,12 +6,9 @@ es5id: 10.4.3-1-69-s
 description: >
     checking 'this' (strict function declaration called by
     Function.prototype.apply(someObject))
-includes: [runTestCase.js]
 ---*/
 
-function testcase() {
 var o = {};
 function f() { "use strict"; return this===o;};
-return f.apply(o);
-}
-runTestCase(testcase);
+
+assert(f.apply(o), 'f.apply(o) !== true');
diff --git a/test/language/function-code/10.4.3-1-7-s.js b/test/language/function-code/10.4.3-1-7-s.js
index 2c9d796076..10de10be61 100644
--- a/test/language/function-code/10.4.3-1-7-s.js
+++ b/test/language/function-code/10.4.3-1-7-s.js
@@ -7,13 +7,10 @@ description: >
     Strict Mode - checking 'this' (FunctionDeclaration defined within
     strict mode)
 flags: [onlyStrict]
-includes: [runTestCase.js]
 ---*/
 
-function testcase() {
 function f() {
     return typeof this;
 }
-return f() === "undefined";
-}
-runTestCase(testcase);
+
+assert.sameValue(f(), "undefined", 'f()');
diff --git a/test/language/function-code/10.4.3-1-70-s.js b/test/language/function-code/10.4.3-1-70-s.js
index 8a73071cc0..b989b66f11 100644
--- a/test/language/function-code/10.4.3-1-70-s.js
+++ b/test/language/function-code/10.4.3-1-70-s.js
@@ -6,13 +6,9 @@ es5id: 10.4.3-1-70-s
 description: >
     checking 'this' (strict function declaration called by
     Function.prototype.apply(globalObject))
-includes:
-    - runTestCase.js
-    - fnGlobalObject.js
+includes: [fnGlobalObject.js]
 ---*/
 
-function testcase() {
 function f() { "use strict"; return this;};
-return f.apply(fnGlobalObject()) === fnGlobalObject();
-}
-runTestCase(testcase);
+
+assert.sameValue(f.apply(fnGlobalObject()), fnGlobalObject(), 'f.apply(fnGlobalObject())');
diff --git a/test/language/function-code/10.4.3-1-71-s.js b/test/language/function-code/10.4.3-1-71-s.js
index 60e9486f82..1ffccd0dcf 100644
--- a/test/language/function-code/10.4.3-1-71-s.js
+++ b/test/language/function-code/10.4.3-1-71-s.js
@@ -6,11 +6,8 @@ es5id: 10.4.3-1-71-s
 description: >
     checking 'this' (strict function declaration called by
     Function.prototype.call())
-includes: [runTestCase.js]
 ---*/
 
-function testcase() {
 function f() { "use strict"; return this===undefined;};
-return f.call();
-}
-runTestCase(testcase);
+
+assert(f.call(), 'f.call() !== true');
diff --git a/test/language/function-code/10.4.3-1-72-s.js b/test/language/function-code/10.4.3-1-72-s.js
index b22169d494..7155daf6fb 100644
--- a/test/language/function-code/10.4.3-1-72-s.js
+++ b/test/language/function-code/10.4.3-1-72-s.js
@@ -6,11 +6,8 @@ es5id: 10.4.3-1-72-s
 description: >
     checking 'this' (strict function declaration called by
     Function.prototype.call(null))
-includes: [runTestCase.js]
 ---*/
 
-function testcase() {
 function f() { "use strict"; return this===null;};
-return f.call(null);
-}
-runTestCase(testcase);
+
+assert(f.call(null), 'f.call(null) !== true');
diff --git a/test/language/function-code/10.4.3-1-73-s.js b/test/language/function-code/10.4.3-1-73-s.js
index 9e0e41e81b..d4ed860330 100644
--- a/test/language/function-code/10.4.3-1-73-s.js
+++ b/test/language/function-code/10.4.3-1-73-s.js
@@ -6,11 +6,8 @@ es5id: 10.4.3-1-73-s
 description: >
     checking 'this' (strict function declaration called by
     Function.prototype.call(undefined))
-includes: [runTestCase.js]
 ---*/
 
-function testcase() {
 function f() { "use strict"; return this===undefined;};
-return f.call(undefined);
-}
-runTestCase(testcase);
+
+assert(f.call(undefined), 'f.call(undefined) !== true');
diff --git a/test/language/function-code/10.4.3-1-74-s.js b/test/language/function-code/10.4.3-1-74-s.js
index 8f6e3e58bb..4b66dddc51 100644
--- a/test/language/function-code/10.4.3-1-74-s.js
+++ b/test/language/function-code/10.4.3-1-74-s.js
@@ -6,12 +6,9 @@ es5id: 10.4.3-1-74-s
 description: >
     checking 'this' (strict function declaration called by
     Function.prototype.call(someObject))
-includes: [runTestCase.js]
 ---*/
 
-function testcase() {
 var o = {};
 function f() { "use strict"; return this===o;};
-return f.call(o);
-}
-runTestCase(testcase);
+
+assert(f.call(o), 'f.call(o) !== true');
diff --git a/test/language/function-code/10.4.3-1-75-s.js b/test/language/function-code/10.4.3-1-75-s.js
index a8d7d36544..255480d520 100644
--- a/test/language/function-code/10.4.3-1-75-s.js
+++ b/test/language/function-code/10.4.3-1-75-s.js
@@ -6,13 +6,9 @@ es5id: 10.4.3-1-75-s
 description: >
     checking 'this' (strict function declaration called by
     Function.prototype.call(globalObject))
-includes:
-    - runTestCase.js
-    - fnGlobalObject.js
+includes: [fnGlobalObject.js]
 ---*/
 
-function testcase() {
 function f() { "use strict"; return this;};
-return f.call(fnGlobalObject()) === fnGlobalObject();
-}
-runTestCase(testcase);
+
+assert.sameValue(f.call(fnGlobalObject()), fnGlobalObject(), 'f.call(fnGlobalObject())');
diff --git a/test/language/function-code/10.4.3-1-76-s.js b/test/language/function-code/10.4.3-1-76-s.js
index 988056566a..a685de24fd 100644
--- a/test/language/function-code/10.4.3-1-76-s.js
+++ b/test/language/function-code/10.4.3-1-76-s.js
@@ -6,11 +6,8 @@ es5id: 10.4.3-1-76-s
 description: >
     checking 'this' (strict function declaration called by
     Function.prototype.bind()())
-includes: [runTestCase.js]
 ---*/
 
-function testcase() {
 function f() { "use strict"; return this===undefined;};
-return f.bind()();
-}
-runTestCase(testcase);
+
+assert(f.bind()(), 'f.bind()() !== true');
diff --git a/test/language/function-code/10.4.3-1-77-s.js b/test/language/function-code/10.4.3-1-77-s.js
index 3476c23916..59e640b0ad 100644
--- a/test/language/function-code/10.4.3-1-77-s.js
+++ b/test/language/function-code/10.4.3-1-77-s.js
@@ -6,11 +6,8 @@ es5id: 10.4.3-1-77-s
 description: >
     checking 'this' (strict function declaration called by
     Function.prototype.bind(null)())
-includes: [runTestCase.js]
 ---*/
 
-function testcase() {
 function f() { "use strict"; return this===null;};
-return f.bind(null)();
-}
-runTestCase(testcase);
+
+assert(f.bind(null)(), 'f.bind(null)() !== true');
diff --git a/test/language/function-code/10.4.3-1-78-s.js b/test/language/function-code/10.4.3-1-78-s.js
index ea1b18ef38..7ac9171a70 100644
--- a/test/language/function-code/10.4.3-1-78-s.js
+++ b/test/language/function-code/10.4.3-1-78-s.js
@@ -6,11 +6,8 @@ es5id: 10.4.3-1-78-s
 description: >
     checking 'this' (strict function declaration called by
     Function.prototype.bind(undefined)())
-includes: [runTestCase.js]
 ---*/
 
-function testcase() {
 function f() { "use strict"; return this===undefined;};
-return f.bind(undefined)();
-}
-runTestCase(testcase);
+
+assert(f.bind(undefined)(), 'f.bind(undefined)() !== true');
diff --git a/test/language/function-code/10.4.3-1-79-s.js b/test/language/function-code/10.4.3-1-79-s.js
index eb76175554..a6fba00cac 100644
--- a/test/language/function-code/10.4.3-1-79-s.js
+++ b/test/language/function-code/10.4.3-1-79-s.js
@@ -6,12 +6,9 @@ es5id: 10.4.3-1-79-s
 description: >
     checking 'this' (strict function declaration called by
     Function.prototype.bind(someObject)())
-includes: [runTestCase.js]
 ---*/
 
-function testcase() {
 var o = {};
 function f() { "use strict"; return this===o;};
-return f.bind(o)();
-}
-runTestCase(testcase);
+
+assert(f.bind(o)(), 'f.bind(o)() !== true');
diff --git a/test/language/function-code/10.4.3-1-8-s.js b/test/language/function-code/10.4.3-1-8-s.js
index 27f652b597..e0079a0408 100644
--- a/test/language/function-code/10.4.3-1-8-s.js
+++ b/test/language/function-code/10.4.3-1-8-s.js
@@ -7,14 +7,11 @@ description: >
     Strict Mode - checking 'this' (FunctionDeclaration includes strict
     directive prologue)
 flags: [noStrict]
-includes: [runTestCase.js]
 ---*/
 
-function testcase() {
 function f() {
     "use strict";
     return typeof this;
 }
-return f() === "undefined";
-}
-runTestCase(testcase);
+
+assert.sameValue(f(), "undefined", 'f()');
diff --git a/test/language/function-code/10.4.3-1-80-s.js b/test/language/function-code/10.4.3-1-80-s.js
index 2ba8d02c2f..9d1335707b 100644
--- a/test/language/function-code/10.4.3-1-80-s.js
+++ b/test/language/function-code/10.4.3-1-80-s.js
@@ -7,13 +7,9 @@ description: >
     Strict Mode - checking 'this' (strict function declaration called
     by Function.prototype.bind(globalObject)())
 flags: [noStrict]
-includes:
-    - runTestCase.js
-    - fnGlobalObject.js
+includes: [fnGlobalObject.js]
 ---*/
 
-function testcase() {
 function f() { "use strict"; return this;};
-return f.bind(fnGlobalObject())() === fnGlobalObject();
-}
-runTestCase(testcase);
+
+assert.sameValue(f.bind(fnGlobalObject())(), fnGlobalObject(), 'f.bind(fnGlobalObject())()');
diff --git a/test/language/function-code/10.4.3-1-81-s.js b/test/language/function-code/10.4.3-1-81-s.js
index e9626d6663..b8eb15e01b 100644
--- a/test/language/function-code/10.4.3-1-81-s.js
+++ b/test/language/function-code/10.4.3-1-81-s.js
@@ -7,12 +7,9 @@ description: >
     Strict Mode - checking 'this' (non-strict function declaration
     called by strict function declaration)
 flags: [noStrict]
-includes: [runTestCase.js]
 ---*/
 
-function testcase() {
 function f() { return this!==undefined;};
 function foo() { "use strict"; return f();}
-return foo();
-}
-runTestCase(testcase);
+
+assert(foo(), 'foo() !== true');
diff --git a/test/language/function-code/10.4.3-1-9-s.js b/test/language/function-code/10.4.3-1-9-s.js
index 15ad701541..ebaf07ab2f 100644
--- a/test/language/function-code/10.4.3-1-9-s.js
+++ b/test/language/function-code/10.4.3-1-9-s.js
@@ -7,13 +7,10 @@ description: >
     Strict Mode - checking 'this' (FunctionExpression defined within
     strict mode)
 flags: [onlyStrict]
-includes: [runTestCase.js]
 ---*/
 
-function testcase() {
 var f = function () {
     return typeof this;
 }
-return f() === "undefined";
-}
-runTestCase(testcase);
+
+assert.sameValue(f(), "undefined", 'f()');