Merge pull request matplotlib#31153 from QuLogic/fix-mock-usage

TST: Use correct method of clearing mock objects

Author: ksunden

lib/matplotlib/tests/test_backends_interactive.py

@@ -669,7 +669,7 @@ def _impl_test_interactive_timers():
     assert mock.call_count > 1
 
     # Now turn it into a single shot timer and verify only one gets triggered
-    mock.call_count = 0
+    mock.reset_mock()
     timer.single_shot = True
     timer.start()
     plt.pause(pause_time)

lib/matplotlib/tests/test_colors.py

@@ -1646,7 +1646,7 @@ def test_norm_callback():
     assert increment.call_count == 2
 
     # We only want autoscale() calls to send out one update signal
-    increment.call_count = 0
+    increment.reset_mock()
     norm.autoscale([0, 1, 2])
     assert increment.call_count == 1