Added dummy message class for systems with python without tk

fs_uae_wrapper/nogui_message.py

@@ -0,0 +1,18 @@
+"""
+Display message as simple text on console
+"""
+import sys
+
+
+class Message:
+    """Just a fake message window for systems without TK"""
+
+    def __init__(self, msg):
+        self.msg = msg
+        self._process = None
+
+    def show(self):
+        sys.stdout.write(self.msg + "\n")
+
+    def close(self):
+        return None

fs_uae_wrapper/utils.py

@@ -8,7 +8,11 @@ import pathlib
 import shutil
 import subprocess
 
-from fs_uae_wrapper import file_archive, message
+from fs_uae_wrapper import file_archive
+try:
+    from fs_uae_wrapper.message import Message
+except ModuleNotFoundError:
+    from fs_uae_wrapper.nogui_message import Message
 
 
 class CmdOption(dict):
@@ -64,7 +68,7 @@ def operate_archive(arch_name, operation, text, params):
     if archiver is None:
         return False
 
-    msg = message.Message(text)
+    msg = Message(text)
     if text:
         msg.show()
 

tests/test_message.py

@@ -2,6 +2,7 @@ import os
 from unittest import TestCase, mock
 
 from fs_uae_wrapper import message
+from fs_uae_wrapper import nogui_message
 
 if os.environ.get('DISPLAY'):
     import tkinter as tk
@@ -38,6 +39,19 @@ class TestMessage(TestCase):
         msg._process.join.assert_called_once()
 
 
+class TestNOPMessage(TestCase):
+
+    @mock.patch('sys.stdout.write')
+    def test_show(self, stdout_write):
+        msg = nogui_message.Message('display that')
+        msg.show()
+        stdout_write.assert_called_once()
+
+    def test_close(self):
+        msg = nogui_message.Message('display that')
+        self.assertIsNone(msg.close())
+
+
 if os.environ.get('DISPLAY'):
     # Tkinter needs graphic environment for the widgets
     class TestSpawn(TestCase):