Handle case where content_file is None (#21)

* Fix broken tests

* Fix workflow for tests.

* Check for `None`. Make sure the path is not a directory.

Author: brass75

.github/workflows/test.yml

@@ -5,15 +5,10 @@ on:
   push:
     branches:
       - main
-    paths:
-      - ".github/workflows/test.yml"
-      - "src/re_plugin_pack/**"
-      - "tests/**"
-      - "pyproject.toml"
   pull_request:
     paths:
       - ".github/workflows/test.yml"
-      - "src/re_plugin_pack/**"
+      - "src/**"
       - "tests/**"
       - "pyproject.toml"
 jobs:

src/render_engine_cli/utils.py

@@ -216,14 +216,16 @@ def get_editor(ctx: click.Context, param: click.Option, value: str) -> str | Non
 
 def handle_content_file(ctx: click.Context, param: click.Option, value: str) -> str | None:
     """Handle the content file"""
+    if value is None:
+        return ""
     if value == "stdin":
         content = list()
         click.secho('Please enter the content. To finish, put a "." on a blank line.', fg="green")
         while (line := input("")) != ".":
             content.append(line)
         return "\n".join(content)
     path = Path(value)
-    if not path.exists():
+    if not path.exists() or path.is_dir():
         raise click.exceptions.BadParameter(
             f'Either the path to a file or "stdin" must be provided. {repr(value)} is invalid.'
         )