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Merged
merged 2 commits into from
Nov 28, 2022
Merged

Add test for mutating input arrays #8990 #24511

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7a1df78
Test that plot results aren't affected by mutating input arrays
saranti Nov 26, 2022
a30a64e
Test that plot results aren't affected by mutating input arrays
saranti Nov 26, 2022
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26 changes: 26 additions & 0 deletions lib/mpl_toolkits/mplot3d/tests/test_axes3d.py
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Original file line number Diff line number Diff line change
Expand Up @@ -2124,3 +2124,29 @@ def test_panecolor_rcparams():
'axes3d.zaxis.panecolor': 'b'}):
fig = plt.figure(figsize=(1, 1))
fig.add_subplot(projection='3d')


@check_figures_equal(extensions=["png"])
def test_mutating_input_arrays_y_and_z(fig_test, fig_ref):
"""
Test to see if the `z` axis does not get mutated
after a call to `Axes3D.plot`

test cases came from GH#8990
"""
ax1 = fig_test.add_subplot(111, projection='3d')
x = [1, 2, 3]
y = [0.0, 0.0, 0.0]
z = [0.0, 0.0, 0.0]
ax1.plot(x, y, z, 'o-')

# mutate y,z to get a nontrivial line
y[:] = [1, 2, 3]
z[:] = [1, 2, 3]

# draw the same plot without mutating x and y
ax2 = fig_ref.add_subplot(111, projection='3d')
x = [1, 2, 3]
y = [0.0, 0.0, 0.0]
z = [0.0, 0.0, 0.0]
ax2.plot(x, y, z, 'o-')