Extract _make_executable for TestSpawn.

Author: jaraco

distutils/tests/test_spawn.py

@@ -45,14 +45,9 @@ def test_spawn(self):
         spawn([exe])  # should work without any error
 
     def test_find_executable(self, tmp_path):
-        program_noeext = 'program'
-        # Give the temporary program an ".exe" suffix for all.
-        # It's needed on Windows and not harmful on other platforms.
-        program = program_noeext + ".exe"
-
-        program_path = tmp_path / program
-        program_path.write_text("", encoding='utf-8')
-        program_path.chmod(stat.S_IXUSR)
+        program_path = self._make_executable(tmp_path, '.exe')
+        program = program_path.name
+        program_noeext = program_path.with_suffix('').name
         filename = str(program_path)
         tmp_dir = path.Path(tmp_path)
 
@@ -121,6 +116,15 @@ def test_find_executable(self, tmp_path):
                 rv = find_executable(program)
                 assert rv == filename
 
+    @staticmethod
+    def _make_executable(tmp_path, ext):
+        # Give the temporary program a suffix regardless of platform.
+        # It's needed on Windows and not harmful on others.
+        program = tmp_path.joinpath('program').with_suffix(ext)
+        program.write_text("", encoding='utf-8')
+        program.chmod(stat.S_IXUSR)
+        return program
+
     def test_spawn_missing_exe(self):
         with pytest.raises(DistutilsExecError) as ctx:
             spawn(['does-not-exist'])