TST: split test_groupby.py

pandas/tests/groupby/aggregate/test_aggregate.py

@@ -15,51 +15,6 @@
 import pandas.util.testing as tm
 
 
-@pytest.fixture
-def ts():
-    return tm.makeTimeSeries()
-
-
-@pytest.fixture
-def tsframe():
-    return DataFrame(tm.getTimeSeriesData())
-
-
-@pytest.fixture
-def df():
-    return DataFrame(
-        {'A': ['foo', 'bar', 'foo', 'bar', 'foo', 'bar', 'foo', 'foo'],
-         'B': ['one', 'one', 'two', 'three', 'two', 'two', 'one', 'three'],
-         'C': np.random.randn(8),
-         'D': np.random.randn(8)})
-
-
-@pytest.fixture
-def mframe():
-    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=['A', 'B', 'C'])
-
-
-@pytest.fixture
-def three_group():
-    return DataFrame(
-        {'A': ['foo', 'foo', 'foo', 'foo', 'bar', 'bar',
-               'bar', 'bar', 'foo', 'foo', 'foo'],
-         'B': ['one', 'one', 'one', 'two', 'one', 'one',
-               'one', 'two', 'two', 'two', 'one'],
-         'C': ['dull', 'dull', 'shiny', 'dull', 'dull', 'shiny',
-               'shiny', 'dull', 'shiny', 'shiny', 'shiny'],
-         'D': np.random.randn(11),
-         'E': np.random.randn(11),
-         'F': np.random.randn(11)})
-
-
 def test_agg_regression1(tsframe):
     grouped = tsframe.groupby([lambda x: x.year, lambda x: x.month])
     result = grouped.agg(np.mean)
@@ -87,6 +42,32 @@ def test_agg_ser_multi_key(df):
     tm.assert_series_equal(results, expected)
 
 
+def test_groupby_aggregation_mixed_dtype():
+
+    # GH 6212
+    expected = DataFrame({
+        'v1': [5, 5, 7, np.nan, 3, 3, 4, 1],
+        'v2': [55, 55, 77, np.nan, 33, 33, 44, 11]},
+        index=MultiIndex.from_tuples([(1, 95), (1, 99), (2, 95), (2, 99),
+                                      ('big', 'damp'),
+                                      ('blue', 'dry'),
+                                      ('red', 'red'), ('red', 'wet')],
+                                     names=['by1', 'by2']))
+
+    df = DataFrame({
+        'v1': [1, 3, 5, 7, 8, 3, 5, np.nan, 4, 5, 7, 9],
+        'v2': [11, 33, 55, 77, 88, 33, 55, np.nan, 44, 55, 77, 99],
+        'by1': ["red", "blue", 1, 2, np.nan, "big", 1, 2, "red", 1, np.nan,
+                12],
+        'by2': ["wet", "dry", 99, 95, np.nan, "damp", 95, 99, "red", 99,
+                np.nan, np.nan]
+    })
+
+    g = df.groupby(['by1', 'by2'])
+    result = g[['v1', 'v2']].mean()
+    tm.assert_frame_equal(result, expected)
+
+
 def test_agg_apply_corner(ts, tsframe):
     # nothing to group, all NA
     grouped = ts.groupby(ts * np.nan)

pandas/tests/groupby/conftest.py

@@ -0,0 +1,77 @@
+import pytest
+import numpy as np
+from pandas import MultiIndex, DataFrame
+from pandas.util import testing as tm
+
+
+@pytest.fixture
+def mframe():
+    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=['A', 'B', 'C'])
+
+
+@pytest.fixture
+def df():
+    return DataFrame(
+        {'A': ['foo', 'bar', 'foo', 'bar', 'foo', 'bar', 'foo', 'foo'],
+         'B': ['one', 'one', 'two', 'three', 'two', 'two', 'one', 'three'],
+         'C': np.random.randn(8),
+         'D': np.random.randn(8)})
+
+
+@pytest.fixture
+def ts():
+    return tm.makeTimeSeries()
+
+
+@pytest.fixture
+def seriesd():
+    return tm.getSeriesData()
+
+
+@pytest.fixture
+def tsd():
+    return tm.getTimeSeriesData()
+
+
+@pytest.fixture
+def frame(seriesd):
+    return DataFrame(seriesd)
+
+
+@pytest.fixture
+def tsframe(tsd):
+    return DataFrame(tsd)
+
+
+@pytest.fixture
+def df_mixed_floats():
+    return DataFrame({'A': ['foo', 'bar', 'foo', 'bar',
+                            'foo', 'bar', 'foo', 'foo'],
+                      'B': ['one', 'one', 'two', 'three',
+                            'two', 'two', 'one', 'three'],
+                      'C': np.random.randn(8),
+                      'D': np.array(
+                          np.random.randn(8), dtype='float32')})
+
+
+@pytest.fixture
+def three_group():
+    return DataFrame({'A': ['foo', 'foo', 'foo',
+                            'foo', 'bar', 'bar',
+                            'bar', 'bar',
+                            'foo', 'foo', 'foo'],
+                      'B': ['one', 'one', 'one',
+                            'two', 'one', 'one', 'one', 'two',
+                            'two', 'two', 'one'],
+                      'C': ['dull', 'dull', 'shiny',
+                            'dull', 'dull', 'shiny', 'shiny',
+                            'dull', 'shiny', 'shiny', 'shiny'],
+                      'D': np.random.randn(11),
+                      'E': np.random.randn(11),
+                      'F': np.random.randn(11)})