Fix BUG: overflow on pd.Timedelta(nanoseconds=) constructor

roberthdevries · roberthdevries · commit 6563e7ca6eec · 2020-03-04T14:16:40.000+01:00
Add regression test
diff --git a/pandas/_libs/tslibs/timedeltas.pyx b/pandas/_libs/tslibs/timedeltas.pyx
@@ -1198,7 +1198,7 @@ class Timedelta(_Timedelta):
 
             kwargs = {key: _to_py_int_float(kwargs[key]) for key in kwargs}
 
-            nano = np.timedelta64(kwargs.pop('nanoseconds', 0), 'ns')
+            nano = convert_to_timedelta64(kwargs.pop('nanoseconds', 0), 'ns')
             try:
                 value = nano + convert_to_timedelta64(timedelta(**kwargs),
                                                       'ns')
diff --git a/pandas/tests/tslibs/test_timedeltas.py b/pandas/tests/tslibs/test_timedeltas.py
@@ -16,6 +16,8 @@
         (1, 1),
         (np.int64(2), 2),
         (np.int32(3), 3),
+        (Timedelta(1e10), 1e10),
+        (Timedelta(nanoseconds=1e10), 1e10),
     ],
 )
 def test_delta_to_nanoseconds(obj, expected):

Original file line number	Diff line number	Diff line change
`@@ -16,6 +16,8 @@`
`16`	`16`	`(1, 1),`
`17`	`17`	`(np.int64(2), 2),`
`18`	`18`	`(np.int32(3), 3),`
	`19`	`+ (Timedelta(1e10), 1e10),`
	`20`	`+ (Timedelta(nanoseconds=1e10), 1e10),`
`19`	`21`	`],`
`20`	`22`	`)`
`21`	`23`	`def test_delta_to_nanoseconds(obj, expected):`