89 lines
3.5 KiB
Python
89 lines
3.5 KiB
Python
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import pytest
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import numpy as np
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from datetime import timedelta
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import pandas as pd
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import pandas.util.testing as tm
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from pandas import TimedeltaIndex, timedelta_range, to_timedelta
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class TestTimedeltaIndex(object):
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def test_construction_base_constructor(self):
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arr = [pd.Timedelta('1 days'), pd.NaT, pd.Timedelta('3 days')]
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tm.assert_index_equal(pd.Index(arr), pd.TimedeltaIndex(arr))
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tm.assert_index_equal(pd.Index(np.array(arr)),
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pd.TimedeltaIndex(np.array(arr)))
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arr = [np.nan, pd.NaT, pd.Timedelta('1 days')]
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tm.assert_index_equal(pd.Index(arr), pd.TimedeltaIndex(arr))
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tm.assert_index_equal(pd.Index(np.array(arr)),
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pd.TimedeltaIndex(np.array(arr)))
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def test_constructor(self):
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expected = TimedeltaIndex(['1 days', '1 days 00:00:05', '2 days',
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'2 days 00:00:02', '0 days 00:00:03'])
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result = TimedeltaIndex(['1 days', '1 days, 00:00:05', np.timedelta64(
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2, 'D'), timedelta(days=2, seconds=2), pd.offsets.Second(3)])
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tm.assert_index_equal(result, expected)
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# unicode
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result = TimedeltaIndex([u'1 days', '1 days, 00:00:05', np.timedelta64(
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2, 'D'), timedelta(days=2, seconds=2), pd.offsets.Second(3)])
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expected = TimedeltaIndex(['0 days 00:00:00', '0 days 00:00:01',
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'0 days 00:00:02'])
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tm.assert_index_equal(TimedeltaIndex(range(3), unit='s'), expected)
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expected = TimedeltaIndex(['0 days 00:00:00', '0 days 00:00:05',
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'0 days 00:00:09'])
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tm.assert_index_equal(TimedeltaIndex([0, 5, 9], unit='s'), expected)
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expected = TimedeltaIndex(
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['0 days 00:00:00.400', '0 days 00:00:00.450',
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'0 days 00:00:01.200'])
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tm.assert_index_equal(TimedeltaIndex([400, 450, 1200], unit='ms'),
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expected)
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def test_constructor_coverage(self):
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rng = timedelta_range('1 days', periods=10.5)
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exp = timedelta_range('1 days', periods=10)
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tm.assert_index_equal(rng, exp)
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msg = 'periods must be a number, got foo'
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with tm.assert_raises_regex(TypeError, msg):
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TimedeltaIndex(start='1 days', periods='foo', freq='D')
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pytest.raises(ValueError, TimedeltaIndex, start='1 days',
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end='10 days')
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pytest.raises(ValueError, TimedeltaIndex, '1 days')
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# generator expression
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gen = (timedelta(i) for i in range(10))
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result = TimedeltaIndex(gen)
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expected = TimedeltaIndex([timedelta(i) for i in range(10)])
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tm.assert_index_equal(result, expected)
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# NumPy string array
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strings = np.array(['1 days', '2 days', '3 days'])
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result = TimedeltaIndex(strings)
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expected = to_timedelta([1, 2, 3], unit='d')
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tm.assert_index_equal(result, expected)
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from_ints = TimedeltaIndex(expected.asi8)
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tm.assert_index_equal(from_ints, expected)
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# non-conforming freq
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pytest.raises(ValueError, TimedeltaIndex,
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['1 days', '2 days', '4 days'], freq='D')
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pytest.raises(ValueError, TimedeltaIndex, periods=10, freq='D')
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def test_constructor_name(self):
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idx = TimedeltaIndex(start='1 days', periods=1, freq='D', name='TEST')
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assert idx.name == 'TEST'
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# GH10025
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idx2 = TimedeltaIndex(idx, name='something else')
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assert idx2.name == 'something else'
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