diff --git a/lib/matplotlib/tests/test_datetime.py b/lib/matplotlib/tests/test_datetime.py
index 104a649e1464..d8daeeddb7da 100644
--- a/lib/matplotlib/tests/test_datetime.py
+++ b/lib/matplotlib/tests/test_datetime.py
@@ -1,4 +1,5 @@
import datetime
+from datetime import timedelta
import numpy as np
import pytest
@@ -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):
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