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Add axes.violinplot test from test_datetime.py #27521

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Add axes.violinplot test from test_datetime.py #27521

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Remove axes.violinplot test from test_datetime.py
tanvincible Dec 15, 2023
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Add axes.violinplot test in test_datetime.py
tanvincible Dec 20, 2023
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Reviewed failed github tests
tanvincible Dec 20, 2023
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tanvincible Dec 20, 2023
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tanvincible Dec 20, 2023
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31 changes: 30 additions & 1 deletion lib/matplotlib/tests/test_datetime.py
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Original file line number Diff line number Diff line change
@@ -1,4 +1,5 @@
import datetime
from datetime import timedelta
import numpy as np

import pytest
Expand Down Expand Up @@ -838,8 +839,36 @@ def test_violin(self):
@pytest.mark.xfail(reason="Test for violinplot not written yet")
@mpl.style.context("default")
def test_violinplot(self):
np.random.seed(19680801)
n_samples = 100
values = np.random.randn(n_samples)
fig, ax = plt.subplots()
ax.violinplot(...)
result = ax.violinplot(values, positions=[datetime(2023, 1, 10)], widths=[
timedelta(days=10)], showmeans=True, showextrema=True)
assert isinstance(result, dict), "Failed to create violin plot"
assert 'bodies' in result, "Violin plot bodies are missing"
assert len(result['bodies']) > 0, "Violin plot bodies are empty"
result1 = ax.violinplot(values, positions=[datetime(2023, 1, 15)], widths=[
timedelta(days=6)], showmeans=True, showextrema=True)
assert isinstance(result1, dict), "Failed to create violin plot"
assert 'bodies' in result1, "Violin plot bodies are missing"
assert len(result1['bodies']) > 0, "Violin plot bodies are empty"
result2 = ax.violinplot(values, positions=[datetime(2023, 1, 25)], widths=[
timedelta(days=12)], showmeans=True, showextrema=True)
assert isinstance(result2, dict), "Failed to create violin plot"
assert 'bodies' in result2, "Violin plot bodies are missing"
assert len(result2['bodies']) > 0, "Violin plot bodies are empty"
result3 = ax.violinplot(values, positions=[datetime(2023, 2, 5)], widths=[
timedelta(days=8)], showmeans=True, showextrema=True)
assert isinstance(result3, dict), "Failed to create violin plot"
assert 'bodies' in result3, "Violin plot bodies are missing"
assert len(result3['bodies']) > 0, "Violin plot bodies are empty"
ax.set_title(
'Violin Plot with DateTime Positions and Timedelta Widths')
ax.set_xlabel('Dates')
ax.set_ylabel('Values')
plt.xticks(rotation=90)
assert result is not None, "Failed to create violin plot"

@mpl.style.context("default")
def test_vlines(self):
Expand Down