test that table uses repr and doesn't try to convert unitized data

story645 · story645 · commit 5b489a77fa5e · 2023-10-13T00:16:38.000-04:00
diff --git a/lib/matplotlib/tests/test_table.py b/lib/matplotlib/tests/test_table.py
@@ -1,3 +1,6 @@
+import datetime
+from unittest.mock import Mock
+
 import numpy as np
 import pytest
 
@@ -7,6 +10,7 @@
 from matplotlib.table import CustomCell, Table
 from matplotlib.testing.decorators import image_comparison, check_figures_equal
 from matplotlib.transforms import Bbox
+import matplotlib.units as munits
 
 
 def test_non_square():
@@ -229,3 +233,31 @@ def test_table_bbox(fig_test, fig_ref):
                   loc='center',
                   bbox=Bbox.from_extents(0.1, 0.2, 0.9, 0.8)
                   )
+
+
+@check_figures_equal()
+def test_table_unit(fig_test, fig_ref):
+    # test that table doesn't participate in unit machinery,\
+    # instead uses repr/str
+
+    class FakeUnit:
+        def __init__(self, thing):
+            pass
+        def __repr__(self):
+            return "Hello"
+
+    fake_convertor = munits.ConversionInterface()
+    fake_convertor.convert = Mock(side_effect=lambda v, u, a: 0)
+    # not used, here for completion
+    fake_convertor.default_units = Mock(side_effect=lambda v, a: None)
+    fake_convertor.axisinfo = Mock(side_effect=lambda u, a: munits.AxisInfo())
+
+    munits.registry[FakeUnit] = fake_convertor
+
+    data = [[FakeUnit("yellow"), FakeUnit(42)],
+            [FakeUnit(datetime.datetime(1968, 8, 1)), FakeUnit(True)]]
+
+    fig_test.subplots().table(data)
+    fig_ref.subplots().table([["Hello", "Hello"], ["Hello", "Hello"]])
+
+    assert not fake_convertor.convert.called
