BUG: test/fix to not always normalize with quarterly time rules, GH #1113

Author: wesm

pandas/tseries/offsets.py

@@ -632,7 +632,9 @@ def apply(self, other):
         other = other + relativedelta(months=3*n - monthsSince)
         wkday, _ = lib.monthrange(other.year, other.month)
         first = _get_firstbday(wkday)
-        result = datetime(other.year, other.month, first)
+        result = datetime(other.year, other.month, first,
+                          other.hour, other.minute, other.second,
+                          other.microsecond)
         return result
 
     @property

pandas/tseries/tests/test_offsets.py

@@ -1298,6 +1298,15 @@ def test_get_standard_freq():
     assert fstr == get_standard_freq('5QuarTer')
     assert fstr == get_standard_freq(('q', 5))
 
+def test_quarterly_dont_normalize():
+    date = datetime(2012, 3, 31, 5, 30)
+
+    offsets = (QuarterBegin, QuarterEnd, BQuarterEnd, BQuarterBegin)
+
+    for klass in offsets:
+        result = date + klass()
+        assert(result.time() == date.time())
+
 def test_rule_code():
     lst = ['M', 'MS', 'BM', 'BMS', 'D', 'B', 'H', 'T', 'S', 'L', 'U']
     for k in lst: