move tempdir handling to setup/teardown

tests/test_main.py

@@ -1,6 +1,7 @@
 import os
 import tempfile
 import subprocess
+import shutil
 from unittest import TestCase
 from unittest.mock import patch
 from aider.main import main
@@ -12,37 +13,35 @@ from prompt_toolkit.output import DummyOutput
 class TestMain(TestCase):
     def setUp(self):
         os.environ["OPENAI_API_KEY"] = "deadbeef"
+        self.original_cwd = os.getcwd()
+        self.tempdir = tempfile.mkdtemp()
+        os.chdir(self.tempdir)
+
+    def tearDown(self):
+        os.chdir(self.original_cwd)
+        shutil.rmtree(self.tempdir)
 
     def test_main_with_empty_dir_no_files_on_command(self):
-        with tempfile.TemporaryDirectory() as temp_dir:
-            os.chdir(temp_dir)
         pipe_input = create_input(StringIO(""))
         main([], input=pipe_input, output=DummyOutput())
         pipe_input.close()
 
     def test_main_with_empty_dir_new_file(self):
-        with tempfile.TemporaryDirectory() as temp_dir:
-            os.chdir(temp_dir)
         pipe_input = create_input(StringIO(""))
         main(["foo.txt"], input=pipe_input, output=DummyOutput())
         pipe_input.close()
         self.assertTrue(os.path.exists("foo.txt"))
 
     def test_main_with_empty_git_dir_new_file(self):
-        with tempfile.TemporaryDirectory() as temp_dir:
+        subprocess.run(["git", "init"])
-            os.chdir(temp_dir)
+        subprocess.run(["git", "config", "user.email", "dummy@example.com"])
-            subprocess.run(["git", "init"], cwd=temp_dir)
+        subprocess.run(["git", "config", "user.name", "Dummy User"])
-            subprocess.run(["git", "config", "user.email", "dummy@example.com"], cwd=temp_dir)
-            subprocess.run(["git", "config", "user.name", "Dummy User"], cwd=temp_dir)
         pipe_input = create_input(StringIO(""))
         main(["--yes", "foo.txt"], input=pipe_input, output=DummyOutput())
         pipe_input.close()
         self.assertTrue(os.path.exists("foo.txt"))
 
     def test_main_args(self):
-        with tempfile.TemporaryDirectory() as temp_dir:
-            os.chdir(temp_dir)
-
         with patch("aider.main.Coder") as MockCoder:
             main(["--no-auto-commits"])
             _, kwargs = MockCoder.call_args