matplotlib · QuLogic · Apr 3, 2026 · Mar 13, 2026
diff --git a/lib/matplotlib/tests/test_agg_filter.py b/lib/matplotlib/tests/test_agg_filter.py
@@ -7,9 +7,6 @@
 @image_comparison(baseline_images=['agg_filter_alpha'],
                   extensions=['gif', 'png', 'pdf'])
 def test_agg_filter_alpha():
-    # Remove this line when this test image is regenerated.
-    plt.rcParams['pcolormesh.snap'] = False
-
     ax = plt.axes()
     x, y = np.mgrid[0:7, 0:8]
     data = x**2 - y**2

diff --git a/lib/matplotlib/tests/test_axes.py b/lib/matplotlib/tests/test_axes.py
@@ -1030,9 +1030,6 @@ def test_hexbin_pickable():
 def test_hexbin_log():
     # Issue #1636 (and also test log scaled colorbar)
 
-    # Remove this line when this test image is regenerated.
-    plt.rcParams['pcolormesh.snap'] = False
-
     np.random.seed(19680801)
     n = 100000
     x = np.random.standard_normal(n)
@@ -1520,9 +1517,6 @@ def test_pcolormesh_log_scale(fig_test, fig_ref):
 # TODO: tighten tolerance after baseline image is regenerated for text overhaul
 @image_comparison(['pcolormesh_datetime_axis.png'], style='mpl20', tol=0.3)
 def test_pcolormesh_datetime_axis():
-    # Remove this line when this test image is regenerated.
-    plt.rcParams['pcolormesh.snap'] = False
-
     fig = plt.figure()
     fig.subplots_adjust(hspace=0.4, top=0.98, bottom=.15)
     base = datetime.datetime(2013, 1, 1)
@@ -5159,7 +5153,7 @@ def test_hist_stacked_bar():
     colors = [(0.5759849696758961, 1.0, 0.0), (0.0, 1.0, 0.350624650815206),
               (0.0, 1.0, 0.6549834156005998), (0.0, 0.6569064625276622, 1.0),
               (0.28302699607823545, 0.0, 1.0), (0.6849123462299822, 0.0, 1.0)]
-    labels = ['green', 'orange', ' yellow', 'magenta', 'black']
+    labels = ['first', 'second', 'third', 'fourth', 'fifth']
     fig, ax = plt.subplots()
     ax.hist(d, bins=10, histtype='barstacked', align='mid', color=colors,
             label=labels)

diff --git a/lib/matplotlib/tests/test_colorbar.py b/lib/matplotlib/tests/test_colorbar.py
@@ -161,9 +161,6 @@ def test_colorbar_extension_inverted_axis(orientation, extend, expected):
                    ],
                   remove_text=True, savefig_kwarg={'dpi': 40}, tol=0.05)
 def test_colorbar_positioning(use_gridspec):
-    # Remove this line when this test image is regenerated.
-    plt.rcParams['pcolormesh.snap'] = False
-
     data = np.arange(1200).reshape(30, 40)
     levels = [0, 200, 400, 600, 800, 1000, 1200]
 

diff --git a/lib/matplotlib/tests/test_colors.py b/lib/matplotlib/tests/test_colors.py
@@ -830,9 +830,6 @@ def _mask_tester(norm_instance, vals):
 
 @image_comparison(['levels_and_colors.png'])
 def test_cmap_and_norm_from_levels_and_colors():
-    # Remove this line when this test image is regenerated.
-    plt.rcParams['pcolormesh.snap'] = False
-
     data = np.linspace(-2, 4, 49).reshape(7, 7)
     levels = [-1, 2, 2.5, 3]
     colors = ['red', 'green', 'blue', 'yellow', 'black']
@@ -849,9 +846,6 @@ def test_cmap_and_norm_from_levels_and_colors():
 
 @image_comparison(['boundarynorm_and_colorbar.png'], tol=1.0)
 def test_boundarynorm_and_colorbarbase():
-    # Remove this line when this test image is regenerated.
-    plt.rcParams['pcolormesh.snap'] = False
-
     # Make a figure and axes with dimensions as desired.
     fig = plt.figure()
     ax1 = fig.add_axes((0.05, 0.80, 0.9, 0.15))

diff --git a/lib/matplotlib/tests/test_constrainedlayout.py b/lib/matplotlib/tests/test_constrainedlayout.py
@@ -411,9 +411,6 @@ def test_colorbar_location():
     Test that colorbar handling is as expected for various complicated
     cases...
     """
-    # Remove this line when this test image is regenerated.
-    plt.rcParams['pcolormesh.snap'] = False
-
     fig, axs = plt.subplots(4, 5, layout="constrained")
     for ax in axs.flat:
         pcm = example_pcolor(ax)

diff --git a/lib/mpl_toolkits/axes_grid1/tests/test_axes_grid1.py b/lib/mpl_toolkits/axes_grid1/tests/test_axes_grid1.py
@@ -562,15 +562,6 @@ def test_anchored_artists():
     box.drawing_area.add_artist(el)
     ax.add_artist(box)
 
-    # This block used to test the AnchoredEllipse class, but that was removed. The block
-    # remains, though it duplicates the above ellipse, so that the test image doesn't
-    # need to be regenerated.
-    box = AnchoredAuxTransformBox(ax.transData, loc='lower left', frameon=True,
-                                  pad=0.5, borderpad=0.4)
-    el = Ellipse((0, 0), width=0.1, height=0.25, angle=-60)
-    box.drawing_area.add_artist(el)
-    ax.add_artist(box)
-
     asb = AnchoredSizeBar(ax.transData, 0.2, r"0.2 units", loc='lower right',
                           pad=0.3, borderpad=0.4, sep=4, fill_bar=True,
                           frameon=False, label_top=True, prop={'size': 20},

diff --git a/lib/mpl_toolkits/mplot3d/tests/test_axes3d.py b/lib/mpl_toolkits/mplot3d/tests/test_axes3d.py
@@ -650,7 +650,6 @@ def test_surface3d():
 # TODO: tighten tolerance after baseline image is regenerated for text overhaul
 @image_comparison(['surface3d_label_offset_tick_position.png'], style='mpl20', tol=0.07)
 def test_surface3d_label_offset_tick_position():
-    plt.rcParams['axes3d.automargin'] = True  # Remove when image is regenerated
     ax = plt.figure().add_subplot(projection="3d")
 
     x, y = np.mgrid[0:6 * np.pi:0.25, 0:4 * np.pi:0.25]
@@ -1733,7 +1732,6 @@ def test_errorbar3d():
 
 @image_comparison(['stem3d.png'], style='mpl20', tol=0.009)
 def test_stem3d():
-    plt.rcParams['axes3d.automargin'] = True  # Remove when image is regenerated
     fig, axs = plt.subplots(2, 3, figsize=(8, 6),
                             constrained_layout=True,
                             subplot_kw={'projection': '3d'})