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import pytest
import dartpy as dart
def test_basics():
sw = dart.common.Stopwatch()
# Stopwatch is started by default
assert sw.isStarted()
assert dart.common.Stopwatch(True).isStarted()
assert not dart.common.Stopwatch(False).isStarted()
# Stop the stopwatch
sw.stop()
assert not sw.isStarted()
# Elapsed time should be the same
elapsed1 = sw.elapsedS()
assert elapsed1 == sw.elapsedS()
assert elapsed1 == sw.elapsedS()
# Elapsed time monotonically increase while the stopwatch is running
sw.start()
assert sw.elapsedS() >= elapsed1
assert sw.elapsedS() >= elapsed1
# Starting a stopwatch already started doesn't have any effect
sw.start()
assert sw.isStarted()
# Restting a started stopwatch resets the elapsed time but doesn't stop the
# stopwatch
sw.start()
sw.reset()
assert sw.isStarted()
assert sw.elapsedS() >= 0.0
assert sw.elapsedS() >= 0.0
# Restting a stopped stopwatch resets the elapsed time but doesn't start the
# stopwatch
sw.stop()
sw.reset()
assert not sw.isStarted()
assert sw.elapsedS() == pytest.approx(0.0)
sw.print()
if __name__ == "__main__":
pytest.main()
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