Fix validation for empty input

examples/falyx_demo.py

@@ -7,11 +7,9 @@ Licensed under the MIT License. See LICENSE file for details.
 
 import asyncio
 import random
-from argparse import Namespace
 
 from falyx.action import Action, ActionGroup, ChainedAction
 from falyx.falyx import Falyx
-from falyx.parsers import FalyxParsers, get_arg_parsers
 from falyx.version import __version__
 
 

falyx/falyx.py

@@ -83,8 +83,12 @@ class CommandValidator(Validator):
         self.falyx = falyx
         self.error_message = error_message
 
-    def validate(self, _) -> None:
-        pass
+    def validate(self, document) -> None:
+        if not document.text:
+            raise ValidationError(
+                message=self.error_message,
+                cursor_position=len(document.text),
+            )
 
     async def validate_async(self, document) -> None:
         text = document.text

falyx/version.py

@@ -1 +1 @@
-__version__ = "0.1.46"
+__version__ = "0.1.47"

pyproject.toml

@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "falyx"
-version = "0.1.46"
+version = "0.1.47"
 description = "Reliable and introspectable async CLI action framework."
 authors = ["Roland Thomas Jr <roland@rtj.dev>"]
 license = "MIT"