Test LogFormatter.__call__ with tiny numbers

pmli · pmli · commit c1c27b5eb24d · 2020-10-26T10:19:31.000+01:00
diff --git a/lib/matplotlib/tests/test_ticker.py b/lib/matplotlib/tests/test_ticker.py
@@ -882,6 +882,13 @@ def test_LogFormatter_call(self, val):
         temp_lf.axis = FakeAxis()
         assert temp_lf(val) == str(val)
 
+    @pytest.mark.parametrize('val', [1e-323, 2e-323, 10e-323, 11e-323])
+    def test_LogFormatter_call_tiny(self, val):
+        # test coeff computation in __call__
+        temp_lf = mticker.LogFormatter()
+        temp_lf.axis = FakeAxis()
+        temp_lf(val)
+
 
 class TestLogitFormatter:
     @staticmethod
