Add utf-8 encoding in test_setupcfg, test_expand

Author: abravalheri

setuptools/tests/config/test_expand.py

@@ -12,7 +12,7 @@ def write_files(files, root_dir):
     for file, content in files.items():
         path = root_dir / file
         path.parent.mkdir(exist_ok=True, parents=True)
-        path.write_text(content)
+        path.write_text(content, encoding="utf-8")
 
 
 def test_glob_relative(tmp_path, monkeypatch):

setuptools/tests/config/test_setupcfg.py

@@ -904,7 +904,8 @@ def test_cmdclass(self, tmpdir):
         module_path = Path(tmpdir, "src/custom_build.py")  # auto discovery for src
         module_path.parent.mkdir(parents=True, exist_ok=True)
         module_path.write_text(
-            "from distutils.core import Command\n" "class CustomCmd(Command): pass\n"
+            "from distutils.core import Command\n" "class CustomCmd(Command): pass\n",
+            encoding="utf-8",
         )
 
         setup_cfg = """