test(cli): add tests for Python force overwriting

Added a test to the CLI test file for the documentation generation
error.

tests/unit/cli/test_python.py

@@ -16,6 +16,8 @@ import pathlib
 
 import pytest
 
+import tempfile
+
 from jcloud_docsgen.cli.cli import create_argument_parser
 from jcloud_docsgen.cli.cli import main as cli_main
 from jcloud_docsgen.cli.languages.python import parse_sections_list
@@ -174,15 +176,40 @@ def test_sections_success():
 def test_docs_generation(expectdir):
     with expectdir('python_project') as output_dir:
         output_dir: pathlib.Path
+        (output_dir / 'test_dir').mkdir()
         input_dir = pathlib.Path(__file__).parent / 'python_project/project'
-        cli_main(
-            [
-                'python',
-                '-s',
-                'params',
-                'docstring',
-                '-HTo',
-                str(output_dir),
-                str(input_dir),
-            ]
+        assert (
+            cli_main(
+                [
+                    'python',
+                    '-s',
+                    'params',
+                    'docstring',
+                    '-HTfo',
+                    str(output_dir),
+                    str(input_dir),
+                ]
+            )
+            == 0
+        )
+
+
+def test_docs_generation_error():
+    with tempfile.TemporaryDirectory() as output_dir:
+        output_dir = pathlib.Path(output_dir)
+        (output_dir / 'test_dir').mkdir()
+        input_dir = pathlib.Path(__file__).parent / 'python_project/project'
+        assert (
+            cli_main(
+                [
+                    'python',
+                    '-s',
+                    'params',
+                    'docstring',
+                    '-HTo',
+                    str(output_dir),
+                    str(input_dir),
+                ]
+            )
+            == 1
         )