test: patch input() to return empty string

This commit patches the `input()` builtin to return an empty string in the test setup, preventing tests from hanging while waiting for user input. It also adds cleanup for the patch in the teardown method.

tests/basic/test_main.py

@@ -5,7 +5,7 @@ import tempfile
 from io import StringIO
 from pathlib import Path
 from unittest import TestCase
-from unittest.mock import MagicMock, patch
+from unittest.mock import MagicMock, patch, mock_open
 
 import git
 from prompt_toolkit.input import DummyInput
@@ -29,6 +29,8 @@ class TestMain(TestCase):
         # Fake home directory prevents tests from using the real ~/.aider.conf.yml file:
         self.homedir_obj = IgnorantTemporaryDirectory()
         os.environ["HOME"] = self.homedir_obj.name
+        self.input_patcher = patch('builtins.input', return_value='')
+        self.mock_input = self.input_patcher.start()
 
     def tearDown(self):
         os.chdir(self.original_cwd)
@@ -36,6 +38,7 @@ class TestMain(TestCase):
         self.homedir_obj.cleanup()
         os.environ.clear()
         os.environ.update(self.original_env)
+        self.input_patcher.stop()
 
     def test_main_with_empty_dir_no_files_on_command(self):
         main(["--no-git"], input=DummyInput(), output=DummyOutput())