Merge pull request matplotlib#21871 from ojeda-e/issue21863

DOC: Code from markevery_prop_cycle moved to test.

Author: timhoffm

doc/users/prev_whats_new/whats_new_3.0.rst

@@ -109,8 +109,7 @@ Support for axes.prop_cycle property *markevery* in rcParams
 
 The Matplotlib ``rcParams`` settings object now supports configuration
 of the attribute :rc:`axes.prop_cycle` with cyclers using the *markevery*
-Line2D object property. An example of this feature is provided at
-:doc:`/gallery/lines_bars_and_markers/markevery_prop_cycle`.
+Line2D object property. 
 
 Multi-page PDF support for pgf backend
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examples/lines_bars_and_markers/markevery_prop_cycle.py

@@ -343,3 +343,28 @@ def test_input_copy(fig_test, fig_ref):
     # Trigger cache invalidation
     l.set_drawstyle("steps")
     fig_ref.add_subplot().plot([0, 2, 4], [0, 2, 4], ".-", drawstyle="steps")
+
+
+@check_figures_equal(extensions=["png"])
+def test_markevery_prop_cycle(fig_test, fig_ref):
+    """Test that we can set markevery prop_cycle."""
+    cases = [None, 8, (30, 8), [16, 24, 30], [0, -1],
+             slice(100, 200, 3), 0.1, 0.3, 1.5,
+             (0.0, 0.1), (0.45, 0.1)]
+
+    cmap = plt.get_cmap('jet')
+    colors = cmap(np.linspace(0.2, 0.8, len(cases)))
+
+    x = np.linspace(-1, 1)
+    y = 5 * x**2
+
+    axs = fig_ref.add_subplot()
+    for i, markevery in enumerate(cases):
+        axs.plot(y - i, 'o-', markevery=markevery, color=colors[i])
+
+    matplotlib.rcParams['axes.prop_cycle'] = cycler(markevery=cases,
+                                                    color=colors)
+
+    ax = fig_test.add_subplot()
+    for i, _ in enumerate(cases):
+        ax.plot(y - i, 'o-')