@@ -2779,24 +2779,6 @@ def test_scatter_color_warning(self, kwargs):
27792779plt .scatter ([], [],c = [],** kwargs )
27802780plt .scatter ([1 ,2 ], [3 ,4 ],c = [4 ,5 ],** kwargs )
27812781
2782- @pytest .mark .parametrize ('colors' ,
2783- [
2784- ('red' ,'blue' ),
2785- (['red' ,'blue' ], ['green' ,'yellow' ]),
2786- ([[1 ,0 ,0 ], [0 ,1 ,0 ]], [[0 ,0 ,1 ], [1 ,1 ,0 ]])
2787- ])
2788- def test_scatter_c_facecolor_warning (self ,colors ):
2789- warn_match = (
2790- "You passed both c and facecolor/facecolors for the markers. "
2791- "c has precedence over facecolor/facecolors. This behavior may "
2792- "change in the future."
2793- )
2794- fig ,ax = plt .subplots ()
2795- x = [0 ,1 ]if len (colors [0 ])== 2 else [0 ]
2796- y = x
2797- with pytest .warns (UserWarning ,match = warn_match ):
2798- ax .scatter (x ,y ,c = colors [0 ],facecolors = colors [1 ])
2799-
28002782def test_scatter_unfilled (self ):
28012783coll = plt .scatter ([0 ,1 ,2 ], [1 ,3 ,2 ],c = ['0.1' ,'0.3' ,'0.5' ],
28022784marker = mmarkers .MarkerStyle ('o' ,fillstyle = 'none' ),
@@ -3080,6 +3062,55 @@ def get_next_color():
30803062c ,None ,kwargs = {},xsize = 2 ,get_next_color_func = get_next_color )
30813063
30823064
3065+ # Warning message tested in the next two tests.
3066+ WARN_MSG = (
3067+ "You passed both c and facecolor/facecolors for the markers. "
3068+ "c has precedence over facecolor/facecolors. This behavior may "
3069+ "change in the future."
3070+ )
3071+ # Test cases shared between direct and integration tests
3072+ COLOR_TEST_CASES = [
3073+ ('red' ,'blue' ),
3074+ (['red' ,'blue' ], ['green' ,'yellow' ]),
3075+ ([[1 ,0 ,0 ], [0 ,1 ,0 ]], [[0 ,0 ,1 ], [1 ,1 ,0 ]])
3076+ ]
3077+
3078+
3079+ @pytest .mark .parametrize ('c, facecolor' ,COLOR_TEST_CASES )
3080+ def test_parse_c_facecolor_warning_direct (c ,facecolor ):
3081+ """Test the internal _parse_scatter_color_args method directly."""
3082+ def get_next_color ():
3083+ return 'blue'
3084+
3085+ # Test with facecolors (plural)
3086+ with pytest .warns (UserWarning ,match = WARN_MSG ):
3087+ mpl .axes .Axes ._parse_scatter_color_args (
3088+ c = c ,edgecolors = None ,kwargs = {'facecolors' :facecolor },
3089+ xsize = 2 ,get_next_color_func = get_next_color )
3090+
3091+ # Test with facecolor (singular)
3092+ with pytest .warns (UserWarning ,match = WARN_MSG ):
3093+ mpl .axes .Axes ._parse_scatter_color_args (
3094+ c = c ,edgecolors = None ,kwargs = {'facecolor' :facecolor },
3095+ xsize = 2 ,get_next_color_func = get_next_color )
3096+
3097+
3098+ @pytest .mark .parametrize ('c, facecolor' ,COLOR_TEST_CASES )
3099+ def test_scatter_c_facecolor_warning_integration (c ,facecolor ):
3100+ """Test the warning through the actual scatter plot creation."""
3101+ fig ,ax = plt .subplots ()
3102+ x = [0 ,1 ]if isinstance (c , (list ,tuple ))else [0 ]
3103+ y = x
3104+
3105+ # Test with facecolors (plural)
3106+ with pytest .warns (UserWarning ,match = WARN_MSG ):
3107+ ax .scatter (x ,y ,c = c ,facecolors = facecolor )
3108+
3109+ # Test with facecolor (singular)
3110+ with pytest .warns (UserWarning ,match = WARN_MSG ):
3111+ ax .scatter (x ,y ,c = c ,facecolor = facecolor )
3112+
3113+
30833114def test_as_mpl_axes_api ():
30843115# tests the _as_mpl_axes api
30853116class Polar :