How to use elapsedNanos method of org.mockitoutil.Stopwatch class

Best Mockito code snippet using org.mockitoutil.Stopwatch.elapsedNanos

Source:Stopwatch.java

...32            throw new IllegalStateException("This stop watch is already started!");33        startNanos = nanoTime();34    }35    public void assertElapsedTimeIsMoreThan(long expected, TimeUnit unit) {36        long elapsedNanos = elapsedNanos();37        long expectedNanos = unit.toNanos(expected);38        if (elapsedNanos <= expectedNanos)39            fail("Expected that more than %dms elapsed! But was: %dms", expectedNanos, elapsedNanos);40    }41    public void assertElapsedTimeIsLessThan(long expected, TimeUnit unit) {42        long elapsedNanos = elapsedNanos();43        long expectedNanos = unit.toNanos(expected);44        if (elapsedNanos >= expectedNanos)45            fail("Expected that less than %dms elapsed! But was: %dms", expectedNanos, elapsedNanos);46    }47    private long elapsedNanos() {48        if (startNanos == null)49            throw new IllegalStateException("This stop watch is not started!");50        return nanoTime() - startNanos;51    }52    private static void fail(String message, long expectedNanos, long elapsedNanos) {53        throw new MockitoAssertionError(format(message, NANOSECONDS.toMillis(expectedNanos), NANOSECONDS.toMillis(elapsedNanos)));54    }55}...

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