TST: split up pandas/tests/indexing/test_multiindex.py (#23912)

Author: simonjayhawkins

pandas/tests/indexing/multiindex/__init__.py

@@ -0,0 +1,32 @@
+import numpy as np
+import pytest
+
+from pandas import DataFrame, Index, MultiIndex
+from pandas.util import testing as tm
+
+
+@pytest.fixture
+def multiindex_dataframe_random_data():
+    """DataFrame with 2 level MultiIndex with random data"""
+    index = MultiIndex(levels=[['foo', 'bar', 'baz', 'qux'], ['one', 'two',
+                                                              'three']],
+                       labels=[[0, 0, 0, 1, 1, 2, 2, 3, 3, 3],
+                               [0, 1, 2, 0, 1, 1, 2, 0, 1, 2]],
+                       names=['first', 'second'])
+    return DataFrame(np.random.randn(10, 3), index=index,
+                     columns=Index(['A', 'B', 'C'], name='exp'))
+
+
+@pytest.fixture
+def multiindex_year_month_day_dataframe_random_data():
+    """DataFrame with 3 level MultiIndex (year, month, day) covering
+    first 100 business days from 2000-01-01 with random data"""
+    tm.N = 100
+    tdf = tm.makeTimeDataFrame()
+    ymd = tdf.groupby([lambda x: x.year, lambda x: x.month,
+                       lambda x: x.day]).sum()
+    # use Int64Index, to make sure things work
+    ymd.index.set_levels([lev.astype('i8') for lev in ymd.index.levels],
+                         inplace=True)
+    ymd.index.set_names(['year', 'month', 'day'], inplace=True)
+    return ymd

pandas/tests/indexing/multiindex/conftest.py

@@ -0,0 +1,22 @@
+from datetime import datetime
+
+import numpy as np
+
+from pandas import Index, Period, Series, period_range
+
+
+def test_multiindex_period_datetime():
+    # GH4861, using datetime in period of multiindex raises exception
+
+    idx1 = Index(['a', 'a', 'a', 'b', 'b'])
+    idx2 = period_range('2012-01', periods=len(idx1), freq='M')
+    s = Series(np.random.randn(len(idx1)), [idx1, idx2])
+
+    # try Period as index
+    expected = s.iloc[0]
+    result = s.loc['a', Period('2012-01')]
+    assert result == expected
+
+    # try datetime as index
+    result = s.loc['a', datetime(2012, 1, 1)]
+    assert result == expected