TST: Move test to resample/test_datetime_index and rename (pandas-dev#25161)

Author: ihsansecer

pandas/tests/groupby/test_grouping.py

@@ -303,18 +303,6 @@ def test_grouper_getting_correct_binner(self):
     def test_grouper_iter(self, df):
         assert sorted(df.groupby('A').grouper) == ['bar', 'foo']
 
-    def test_grouper_base(self):
-        # GH25161
-        dt = pd.to_datetime(["2018-11-26 16:17:43.51",
-                             "2018-11-26 16:17:44.51",
-                             "2018-11-26 16:17:45.51"])
-        s = Series(np.arange(3), index=dt)
-        base = 17 + 43.51 / 60
-        g = s.groupby(pd.Grouper(freq="3min", base=base))
-        result = g.size()
-        expected = Series(3, index=[dt[0]])
-        assert_series_equal(result, expected)
-
     def test_empty_groups(self, df):
         # see gh-1048
         with pytest.raises(ValueError, match="No group keys passed!"):

pandas/tests/resample/test_datetime_index.py

@@ -751,6 +751,19 @@ def test_resample_base():
     tm.assert_index_equal(resampled.index, exp_rng)
 
 
+def test_resample_float_base():
+    # GH25161
+    dt = pd.to_datetime(["2018-11-26 16:17:43.51",
+                         "2018-11-26 16:17:44.51",
+                         "2018-11-26 16:17:45.51"])
+    s = Series(np.arange(3), index=dt)
+    base = 17 + 43.51 / 60
+    g = s.groupby(pd.Grouper(freq="3min", base=base))
+    result = g.size()
+    expected = Series(3, index=[dt[0]])
+    assert_series_equal(result, expected)
+
+
 def test_resample_daily_anchored():
     rng = date_range('1/1/2000 0:00:00', periods=10000, freq='T')
     ts = Series(np.random.randn(len(rng)), index=rng)