fix #44

Author: Brian Kohan

django_typer/tests/tests.py

@@ -1162,6 +1162,40 @@ def test_group_call(self):
         with self.assertRaises(NotImplementedError):
             get_command("groups")()
 
+    def test_get_help_from_incongruent_path(self):
+        """
+        https://github.com/bckohan/django-typer/issues/44
+        """
+        # change dir to the first dir that is not a parent
+        cwd = Path(os.getcwd())
+        try:
+            for directory in os.listdir("/"):
+                top_dir = Path(f"/{directory}")
+                try:
+                    cwd.relative_to(top_dir)
+                except ValueError:
+                    # change cwd to the first directory that is not a parent and try
+                    # to invoke help from there
+                    os.chdir(top_dir)
+                    result = subprocess.run(
+                        [sys.executable, manage_py.absolute(), "groups", "--help"],
+                        capture_output=True,
+                        text=True,
+                        env=os.environ,
+                    )
+                    self.assertGreater(
+                        sim := similarity(
+                            result.stdout,
+                            (
+                                TESTS_DIR / "test_app" / "helps" / f"groups.txt"
+                            ).read_text(),
+                        ),
+                        0.96,  # width inconsistences drive this number < 1
+                    )
+                    return
+        finally:
+            os.chdir(cwd)
+
     @override_settings(
         INSTALLED_APPS=[
             "django_typer.tests.test_app",

django_typer/utils.py

@@ -25,7 +25,10 @@ def get_usage_script(script: t.Optional[str] = None) -> t.Union[Path, str]:
     cmd_pth = Path(script or sys.argv[0])
     if shutil.which(cmd_pth.name):
         return cmd_pth.name
-    return cmd_pth.absolute().relative_to(Path(os.getcwd()))
+    try:
+        return cmd_pth.absolute().relative_to(Path(os.getcwd()))
+    except ValueError:
+        return cmd_pth.absolute()
 
 
 def traceback_config() -> t.Union[bool, t.Dict[str, t.Any]]: