// The time values returned when calling the now method MUST be monotonically increasing and not subject to system clock adjustments or system clock skew.

test(function() {

assert_true(self.performance.now() > 0, "self.performance.now() returns positive numbers");

}, "self.performance.now() returns a positive number");

// The difference between any two chronologically recorded time values returned from the now method MUST never be negative.

test(function() {

var now1 = self.performance.now();

var now2 = self.performance.now();

assert_true((now2-now1) >= 0, "self.performance.now() difference is not negative");

},

"self.performance.now() difference is not negative"

);