Added tests for updated resample function

Author: captainsafia

pandas/tests/test_tseries.py

@@ -423,6 +423,17 @@ def test_series_bin_grouper():
     exp_counts = np.array([3, 3, 4], dtype=np.int64)
     assert_almost_equal(counts, exp_counts)
 
+def test_resample_with_timedeltaindex():
+    from pandas import DataFrame
+    from pandas import timedelta_range
+
+    df = DataFrame(np.random.normal(size = (100, 4)))
+    df.index = timedelta_range(start='0s', periods=100, freq='s')
+    resample = df.resample('10s', base = 5)
+    assert_almost_equal(resample.index[0].seconds, 5)
+
+    with tm.assertRaises(Exception):
+        df.resample('10s', base=15)
 
 class TestBinGroupers(tm.TestCase):
     _multiprocess_can_split_ = True