@@ -2765,24 +2765,6 @@ def test_scatter_color_warning(self, kwargs):
27652765plt .scatter ([], [],c = [],** kwargs )
27662766plt .scatter ([1 ,2 ], [3 ,4 ],c = [4 ,5 ],** kwargs )
27672767
2768- @pytest .mark .parametrize ('colors' ,
2769- [
2770- ('red' ,'blue' ),
2771- (['red' ,'blue' ], ['green' ,'yellow' ]),
2772- ([[1 ,0 ,0 ], [0 ,1 ,0 ]], [[0 ,0 ,1 ], [1 ,1 ,0 ]])
2773- ])
2774- def test_scatter_c_facecolor_warning (self ,colors ):
2775- warn_match = (
2776- "You passed both c and facecolor/facecolors for the markers. "
2777- "c has precedence over facecolor/facecolors. This behavior may "
2778- "change in the future."
2779- )
2780- fig ,ax = plt .subplots ()
2781- x = [0 ,1 ]if len (colors [0 ])== 2 else [0 ]
2782- y = x
2783- with pytest .warns (UserWarning ,match = warn_match ):
2784- ax .scatter (x ,y ,c = colors [0 ],facecolors = colors [1 ])
2785-
27862768def test_scatter_unfilled (self ):
27872769coll = plt .scatter ([0 ,1 ,2 ], [1 ,3 ,2 ],c = ['0.1' ,'0.3' ,'0.5' ],
27882770marker = mmarkers .MarkerStyle ('o' ,fillstyle = 'none' ),
@@ -3066,6 +3048,55 @@ def get_next_color():
30663048c ,None ,kwargs = {},xsize = 2 ,get_next_color_func = get_next_color )
30673049
30683050
3051+ # Warning message tested in the next two tests.
3052+ WARN_MSG = (
3053+ "You passed both c and facecolor/facecolors for the markers. "
3054+ "c has precedence over facecolor/facecolors. This behavior may "
3055+ "change in the future."
3056+ )
3057+ # Test cases shared between direct and integration tests
3058+ COLOR_TEST_CASES = [
3059+ ('red' ,'blue' ),
3060+ (['red' ,'blue' ], ['green' ,'yellow' ]),
3061+ ([[1 ,0 ,0 ], [0 ,1 ,0 ]], [[0 ,0 ,1 ], [1 ,1 ,0 ]])
3062+ ]
3063+
3064+
3065+ @pytest .mark .parametrize ('c, facecolor' ,COLOR_TEST_CASES )
3066+ def test_parse_c_facecolor_warning_direct (c ,facecolor ):
3067+ """Test the internal _parse_scatter_color_args method directly."""
3068+ def get_next_color ():
3069+ return 'blue'
3070+
3071+ # Test with facecolors (plural)
3072+ with pytest .warns (UserWarning ,match = WARN_MSG ):
3073+ mpl .axes .Axes ._parse_scatter_color_args (
3074+ c = c ,edgecolors = None ,kwargs = {'facecolors' :facecolor },
3075+ xsize = 2 ,get_next_color_func = get_next_color )
3076+
3077+ # Test with facecolor (singular)
3078+ with pytest .warns (UserWarning ,match = WARN_MSG ):
3079+ mpl .axes .Axes ._parse_scatter_color_args (
3080+ c = c ,edgecolors = None ,kwargs = {'facecolor' :facecolor },
3081+ xsize = 2 ,get_next_color_func = get_next_color )
3082+
3083+
3084+ @pytest .mark .parametrize ('c, facecolor' ,COLOR_TEST_CASES )
3085+ def test_scatter_c_facecolor_warning_integration (c ,facecolor ):
3086+ """Test the warning through the actual scatter plot creation."""
3087+ fig ,ax = plt .subplots ()
3088+ x = [0 ,1 ]if isinstance (c , (list ,tuple ))else [0 ]
3089+ y = x
3090+
3091+ # Test with facecolors (plural)
3092+ with pytest .warns (UserWarning ,match = WARN_MSG ):
3093+ ax .scatter (x ,y ,c = c ,facecolors = facecolor )
3094+
3095+ # Test with facecolor (singular)
3096+ with pytest .warns (UserWarning ,match = WARN_MSG ):
3097+ ax .scatter (x ,y ,c = c ,facecolor = facecolor )
3098+
3099+
30693100def test_as_mpl_axes_api ():
30703101# tests the _as_mpl_axes api
30713102class Polar :