The Tor Browser / file revision

 var gTestcases = new Array();

 var gTc = gTestcases.length;

 function TestCase(n, d, e, a) {

     this.passed = getTestCaseResult(e, a);

     gTestcases[gTc++] = this;

 }

 function getTestCaseResult(expected, actual) {

     if (typeof expected != 'number')

         return actual == expected;

     return Math.abs(actual - expected) <= 1E-10;

 }

 function test() {

     for ( gTc=0; gTc < gTestcases.length; gTc++ ) {

         gTestcases[gTc].passed = writeTestCaseResult(gTestcases[gTc].description +" = "+ gTestcases[gTc].actual);

     }

     function writeTestCaseResult( expect, actual, string ) {

         var passed = getTestCaseResult( expect, actual );

     }

 }

 var SECTION = "15.4.2.1-1";

 new TestCase( SECTION, eval("var arr = (new Array(1,2)); arr[0]") );

 new TestCase( SECTION, "var arr = (new Array(1,2)); String(arr)", "1,2", (this.abstract++));

 test();

 new TestCase( SECTION, "VAR1 = NaN; VAR2=1; VAR1 -= VAR2", Number.NaN, eval("VAR1 = Number.NaN; VAR2=1; VAR1 -= VAR2"));