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test annotate(textcoords=offset fontsize) #25989

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May 28, 2023
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test annotate(textcoords=offset fontsize) #25989

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16 changes: 16 additions & 0 deletions lib/matplotlib/tests/test_text.py
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Original file line number Diff line number Diff line change
Expand Up @@ -886,3 +886,19 @@ def call(*args, **kwargs):
# Every string gets a miss for the first layouting (extents), then a hit
# when drawing, but "foo\nbar" gets two hits as it's drawn twice.
assert info.hits > info.misses


def test_annotate_offset_fontsize():
# Test that offset_fontsize parameter works and uses accurate values
fig, ax = plt.subplots()
text_coords = ['offset points', 'offset fontsize']
# 10 points should be equal to 1 fontsize unit at fontsize=10
xy_text = [(10, 10), (1, 1)]
anns = [ax.annotate('test', xy=(0.5, 0.5),
xytext=xy_text[i],
fontsize='10',
xycoords='data',
textcoords=text_coords[i]) for i in range(2)]
points_coords, fontsize_coords = [ann.get_window_extent() for ann in anns]
fig.canvas.draw()
assert str(points_coords) == str(fontsize_coords)