diff --git a/test/built-ins/RegExp/prototype/15.10.6.js b/test/built-ins/RegExp/prototype/15.10.6.js
index 8fa049a919..a1d12241f2 100644
--- a/test/built-ins/RegExp/prototype/15.10.6.js
+++ b/test/built-ins/RegExp/prototype/15.10.6.js
@@ -4,11 +4,8 @@
 /*---
 es5id: 15.10.6
 description: RegExp.prototype is itself a not RegExp
-includes: [runTestCase.js]
 ---*/
 
-function testcase() {
   var s = Object.prototype.toString.call(RegExp.prototype);
-  return s === '[object Object]';
- }
-runTestCase(testcase);
+
+assert.sameValue(s, '[object Object]', 's');
diff --git a/test/built-ins/RegExp/prototype/exec/15.10.6.2-9-e-1.js b/test/built-ins/RegExp/prototype/exec/15.10.6.2-9-e-1.js
index 4d3e152317..ab93d95a8a 100644
--- a/test/built-ins/RegExp/prototype/exec/15.10.6.2-9-e-1.js
+++ b/test/built-ins/RegExp/prototype/exec/15.10.6.2-9-e-1.js
@@ -6,14 +6,11 @@ es5id: 15.10.6.2-9-e-1
 description: >
     RegExp.prototype.exec - the removed step 9.e won't affected
     current algorithm
-includes: [runTestCase.js]
 ---*/
 
-function testcase() {
         var str = "Hello World!";
         var regObj = new RegExp("World");
         var result = false;
         result = regObj.exec(str).toString() === "World";
-        return result;
-    }
-runTestCase(testcase);
+
+assert(result, 'result !== true');
diff --git a/test/built-ins/RegExp/prototype/global/15.10.7.2-2.js b/test/built-ins/RegExp/prototype/global/15.10.7.2-2.js
index a30fa4da8e..bc00e211fd 100644
--- a/test/built-ins/RegExp/prototype/global/15.10.7.2-2.js
+++ b/test/built-ins/RegExp/prototype/global/15.10.7.2-2.js
@@ -6,17 +6,12 @@ es5id: 15.10.7.2-2
 description: >
     RegExp.prototype.global is an accessor property whose set accessor
     function is undefined
-includes: [runTestCase.js]
 ---*/
 
-function testcase() {
   var desc = Object.getOwnPropertyDescriptor(RegExp.prototype, 'global');
   
-  if (typeof desc.get === 'function' &&
-      desc.set === undefined &&
-      desc.enumerable === false &&
-      desc.configurable === true) {
-    return true;
-  }
- }
-runTestCase(testcase);
+
+assert.sameValue(typeof desc.get, 'function', 'typeof desc.get');
+assert.sameValue(desc.set, undefined, 'desc.set');
+assert.sameValue(desc.enumerable, false, 'desc.enumerable');
+assert.sameValue(desc.configurable, true, 'desc.configurable');
diff --git a/test/built-ins/RegExp/prototype/ignoreCase/15.10.7.3-2.js b/test/built-ins/RegExp/prototype/ignoreCase/15.10.7.3-2.js
index abf7079533..60fecfef54 100644
--- a/test/built-ins/RegExp/prototype/ignoreCase/15.10.7.3-2.js
+++ b/test/built-ins/RegExp/prototype/ignoreCase/15.10.7.3-2.js
@@ -6,17 +6,12 @@ es5id: 15.10.7.3-2
 description: >
     RegExp.prototype.ignoreCase is an accessor property whose set
     accessor function is undefined
-includes: [runTestCase.js]
 ---*/
 
-function testcase() {
   var d = Object.getOwnPropertyDescriptor(RegExp.prototype, 'ignoreCase');
   
-  if (typeof d.get === 'function' &&
-      d.set === undefined &&
-      d.enumerable === false &&
-      d.configurable === true) {
-    return true;
-  }
- }
-runTestCase(testcase);
+
+assert.sameValue(typeof d.get, 'function', 'typeof d.get');
+assert.sameValue(d.set, undefined, 'd.set');
+assert.sameValue(d.enumerable, false, 'd.enumerable');
+assert.sameValue(d.configurable, true, 'd.configurable');
diff --git a/test/built-ins/RegExp/prototype/lastIndex/15.10.7.5-2.js b/test/built-ins/RegExp/prototype/lastIndex/15.10.7.5-2.js
index a96fc0ebff..a9a7e73c84 100644
--- a/test/built-ins/RegExp/prototype/lastIndex/15.10.7.5-2.js
+++ b/test/built-ins/RegExp/prototype/lastIndex/15.10.7.5-2.js
@@ -4,11 +4,8 @@
 /*---
 es5id: 15.10.7.5-2
 description: RegExp.prototype.lastIndex is not present
-includes: [runTestCase.js]
 ---*/
 
-function testcase() {
   var d = Object.getOwnPropertyDescriptor(RegExp.prototype, 'lastIndex');
-  return d === undefined;
- }
-runTestCase(testcase);
+
+assert.sameValue(d, undefined, 'd');
diff --git a/test/built-ins/RegExp/prototype/multiline/15.10.7.4-2.js b/test/built-ins/RegExp/prototype/multiline/15.10.7.4-2.js
index 69e6a65c0c..3b0ca4ddea 100644
--- a/test/built-ins/RegExp/prototype/multiline/15.10.7.4-2.js
+++ b/test/built-ins/RegExp/prototype/multiline/15.10.7.4-2.js
@@ -6,17 +6,12 @@ es5id: 15.10.7.4-2
 description: >
     RegExp.prototype.multiline is an accessor property whose set
     accessor function is undefined
-includes: [runTestCase.js]
 ---*/
 
-function testcase() {
   var d = Object.getOwnPropertyDescriptor(RegExp.prototype, 'multiline');
   
-  if (typeof d.get === 'function' &&
-      d.set === undefined &&
-      d.enumerable === false &&
-      d.configurable === true) {
-    return true;
-  }
- }
-runTestCase(testcase);
+
+assert.sameValue(typeof d.get, 'function', 'typeof d.get');
+assert.sameValue(d.set, undefined, 'd.set');
+assert.sameValue(d.enumerable, false, 'd.enumerable');
+assert.sameValue(d.configurable, true, 'd.configurable');
diff --git a/test/built-ins/RegExp/prototype/source/15.10.7.1-2.js b/test/built-ins/RegExp/prototype/source/15.10.7.1-2.js
index eebeb495d4..2af0b47a2a 100644
--- a/test/built-ins/RegExp/prototype/source/15.10.7.1-2.js
+++ b/test/built-ins/RegExp/prototype/source/15.10.7.1-2.js
@@ -6,17 +6,12 @@ es5id: 15.10.7.1-2
 description: >
     RegExp.prototype.source is an accessor property whose set accessor
     function is undefined
-includes: [runTestCase.js]
 ---*/
 
-function testcase() {
   var d = Object.getOwnPropertyDescriptor(RegExp.prototype, 'source');
   
-  if (typeof d.get === 'function' &&
-      d.set === undefined &&
-      d.enumerable === false &&
-      d.configurable === true) {
-    return true;
-  }
- }
-runTestCase(testcase);
+
+assert.sameValue(typeof d.get, 'function', 'typeof d.get');
+assert.sameValue(d.set, undefined, 'd.set');
+assert.sameValue(d.enumerable, false, 'd.enumerable');
+assert.sameValue(d.configurable, true, 'd.configurable');