Correct test assertion (Fixes issue#61)

Changed Number.isNaN_Boolean.js, String.prototype.endsWith_Fail.js and String.prototype.endsWith_Fail_2.js to test for the correct result. Also removed implicit coercion in a couple of other test files.

test/suite/es6/Number.isNaN/Number.isNaN_Boolean.js

@@ -13,6 +13,6 @@ includes: [runTestCase.js]
 ---*/
 
 function testcase() {
-  return Number.isNaN(true);
+  return Number.isNaN(true) === false;
  }
 runTestCase(testcase);

test/suite/es6/Number.isNaN/Number.isNaN_NaN.js

@@ -13,6 +13,6 @@ includes: [runTestCase.js]
 ---*/
 
 function testcase() {
-  return Number.isNaN(NaN);
+  return Number.isNaN(NaN) === true;
  }
 runTestCase(testcase);

test/suite/es6/Number.isNaN/Number.isNaN_Object.js

@@ -15,6 +15,6 @@ includes: [runTestCase.js]
 ---*/
 
 function testcase() {
-  return !Number.isNaN(new Object());
+  return Number.isNaN(new Object()) === false;
  }
 runTestCase(testcase);

test/suite/es6/Number.isNaN/Number.isNaN_String.js

@@ -13,6 +13,6 @@ includes: [runTestCase.js]
 ---*/
 
 function testcase() {
-  return !Number.isNaN('string');
+  return Number.isNaN('string') === false;
  }
 runTestCase(testcase);

test/suite/es6/String.prototype.contains/String.prototype.contains_Success.js

@@ -15,7 +15,7 @@ includes: [runTestCase.js]
 ---*/
 
 function testcase() {
-  if('word'.contains('w', 0)) {
+  if('word'.contains('w', 0) === true) {
   	return true;
   }
  }

test/suite/es6/String.prototype.contains/String.prototype.contains_SuccessNoLocation.js

@@ -15,7 +15,7 @@ includes: [runTestCase.js]
 ---*/
 
 function testcase() {
-  if('word'.contains('w')) {
+  if('word'.contains('w') === true) {
   	return true;
   }
  }

test/suite/es6/String.prototype.endsWith/String.prototype.endsWith_Fail.js

@@ -13,7 +13,7 @@ includes: [runTestCase.js]
 ---*/
 
 function testcase() {
-  if('word'.endsWith('r')) {
+  if('word'.endsWith('r') === false) {
   	return true;
   }
  }

test/suite/es6/String.prototype.endsWith/String.prototype.endsWith_Fail_2.js

@@ -15,7 +15,7 @@ includes: [runTestCase.js]
 ---*/
 
 function testcase() {
-  if('word'.endsWith('d',3)) {
+  if('word'.endsWith('d', 3) === false) {
   	return true;
   }
  }

test/suite/es6/String.prototype.endsWith/String.prototype.endsWith_Success.js

@@ -15,7 +15,7 @@ includes: [runTestCase.js]
 ---*/
 
 function testcase() {
-  if('word'.endsWith('d')) {
+  if('word'.endsWith('d') === true) {
   	return true;
   }
  }

test/suite/es6/String.prototype.endsWith/String.prototype.endsWith_Success_2.js

@@ -15,7 +15,7 @@ includes: [runTestCase.js]
 ---*/
 
 function testcase() {
-  if('word'.endsWith('d', 4)) {
+  if('word'.endsWith('d', 4) === true) {
   	return true;
   }
  }

test/suite/es6/String.prototype.endsWith/String.prototype.endsWith_Success_3.js

@@ -15,7 +15,7 @@ includes: [runTestCase.js]
 ---*/
 
 function testcase() {
-  if('word'.endsWith('d', 25)) {
+  if('word'.endsWith('d', 25) === true) {
   	return true;
   }
  }

test/suite/es6/String.prototype.endsWith/String.prototype.endsWith_Success_4.js

@@ -15,7 +15,7 @@ includes: [runTestCase.js]
 ---*/
 
 function testcase() {
-  if('word'.endsWith('r',3)) {
+  if('word'.endsWith('r', 3) === true) {
   	return true;
   }
  }