27 lines
838 B
Python
27 lines
838 B
Python
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import numpy as np
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from pandas import (
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Series,
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date_range,
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)
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class TestIsMonotonic:
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def test_is_monotonic_numeric(self):
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ser = Series(np.random.default_rng(2).integers(0, 10, size=1000))
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assert not ser.is_monotonic_increasing
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ser = Series(np.arange(1000))
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assert ser.is_monotonic_increasing is True
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assert ser.is_monotonic_increasing is True
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ser = Series(np.arange(1000, 0, -1))
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assert ser.is_monotonic_decreasing is True
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def test_is_monotonic_dt64(self):
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ser = Series(date_range("20130101", periods=10))
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assert ser.is_monotonic_increasing is True
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assert ser.is_monotonic_increasing is True
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ser = Series(list(reversed(ser)))
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assert ser.is_monotonic_increasing is False
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assert ser.is_monotonic_decreasing is True
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