diff --git a/lib/matplotlib/tests/test_datetime.py b/lib/matplotlib/tests/test_datetime.py
index ca8e1cb90732..62b598d3358a 100644
--- a/lib/matplotlib/tests/test_datetime.py
+++ b/lib/matplotlib/tests/test_datetime.py
@@ -450,11 +450,27 @@ def test_pcolorfast(self):
fig, ax = plt.subplots()
ax.pcolorfast(...)
- @pytest.mark.xfail(reason="Test for pcolormesh not written yet")
@mpl.style.context("default")
def test_pcolormesh(self):
- fig, ax = plt.subplots()
- ax.pcolormesh(...)
+ fig, (ax1, ax2, ax3, ax4) = plt.subplots(4, 1, layout="constrained")
+
+ np.random.seed(19680801)
+
+ x_base_date = datetime.datetime(2023, 1, 1)
+ x_dates = [x_base_date + datetime.timedelta(days=i) for i in range(5)]
+
+ y_base_date = datetime.datetime(2023, 1, 1)
+ y_dates = [y_base_date + datetime.timedelta(days=i) for i in range(5)]
+
+ x_timestamps = [date.timestamp() for date in x_dates]
+ y_timestamps = [date.timestamp() for date in y_dates]
+
+ data = np.random.rand(len(x_dates), len(y_dates))
+
+ ax1.pcolormesh(x_dates, y_dates, data, cmap='viridis')
+ ax2.pcolormesh(x_dates, y_timestamps, data, cmap='viridis')
+ ax3.pcolormesh(x_timestamps, y_dates, data, cmap='viridis')
+ ax4.pcolormesh(x_timestamps, y_timestamps, data, cmap='viridis')
@mpl.style.context("default")
def test_plot(self):
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