1+ import os
2+ import tempfile
3+
14import pytest
25
6+ import matplotlib as mpl
37import matplotlib .pyplot as plt
4-
5-
6- pytest . importorskip ( "matplotlib.backends.backend_macosx" ,
7- reason = "These are mac only tests" )
8+ try :
9+ from matplotlib . backends import _macosx
10+ except ImportError :
11+ pytest . skip ( "These are mac only tests" , allow_module_level = True )
812
913
1014@pytest .mark .backend ('macosx' )
@@ -18,3 +22,32 @@ def test_cached_renderer():
1822fig = plt .figure (2 )
1923fig .draw_without_rendering ()
2024assert fig ._cachedRenderer is not None
25+
26+
27+ @pytest .mark .backend ('macosx' )
28+ def test_savefig_rcparam ():
29+ # Store the save file so we can overwrite it and
30+ # then put back the real one after this
31+ old_save_file_func = _macosx .choose_save_file
32+
33+ def new_choose_save_file (title ,directory ,filename ):
34+ # Replacement function instead of opening a GUI window
35+ # Make a new directory for testing the update of the rcParams
36+ os .makedirs (f"{ directory } )
37+ return f"{ directory } { filename }
38+
39+ _macosx .choose_save_file = new_choose_save_file
40+ fig = plt .figure ()
41+ with tempfile .TemporaryDirectory ()as temp_dir , \
42+ mpl .rc_context ({"savefig.directory" :temp_dir }):
43+ fig .canvas .toolbar .save_figure ()
44+ # Check the saved location got created
45+ save_file = f"{ temp_dir } { fig .canvas .get_default_filename ()}
46+ assert os .path .exists (save_file )
47+
48+ # Check the savefig.directory rcParam got updated because
49+ # we added a subdirectory "test"
50+ assert mpl .rcParams ["savefig.directory" ]== f"{ temp_dir }
51+
52+ # Replace the original function
53+ _macosx .choose_save_file = old_save_file_func