function runTestFixture (testDoc, testFixture, continuation) {
  var testCases = getTestFunctions(testFixture);
  var testsFailedBefore = gTestsFailed; // why is it redundant?

  runTests(testDoc, testFixture, testCases, 0, function () {
    if (testsFailedBefore == gTestsFailed) {
      setStatus(testDoc, testFixture, null, ICON_SUCCESS);
    }    
    if (isFunction(continuation)) continuation();
  });
}