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Test Info:

// 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"
);