call_later should always return TimerHandle

Author: jensbjorgensen

tests/test_base.py

@@ -938,6 +938,12 @@ def test_loop_call_later_handle_when_after_fired(self):
         self.loop.run_until_complete(fut)
         self.assertEqual(handle.when(), when)
 
+    def test_loop_call_later_0_returns_timer_handle(self):
+        cb = lambda: False  # NoQA
+        handle = self.loop.call_later(0, cb)
+        handle.when() # undesired behavior: handle is a Handle instead of TimerHandle
+        handle.cancel()
+
 
 class TestBaseAIO(_TestBase, AIOTestCase):
     pass

uvloop/loop.pyx

@@ -1326,10 +1326,7 @@ cdef class Loop:
         when = <uint64_t>round(delay * 1000)
         if not args:
             args = None
-        if when == 0:
-            return self._call_soon(callback, args, context)
-        else:
-            return self._call_later(when, callback, args, context)
+        return self._call_later(when, callback, args, context)
 
     def call_at(self, when, callback, *args, context=None):
         """Like call_later(), but uses an absolute time.