def test_empty_histogram():
tree = IntervalTree()
expectedResult = [
Interval(0.0, 0.25, 0.0),
Interval(0.25, 0.5, 0.0),
Interval(0.5, 0.75, 0.0),
Interval(0.75, 1.0, 0.0)
]
assert tree.computeCountHistogram(4) == expectedResult
assert tree.computeUtilizationHistogram(4) == expectedResult
