Show version number

a1_swap_mod_packer/__init__.py

@@ -1,2 +1,3 @@
-__version__ = "0.4.0"
 APP_NAME = "A1 Swap Mod Packer"
+__version__ = "0.4.0"
+APP_TITLE = f"{APP_NAME} v{__version__}"

a1_swap_mod_packer/cli.py

@@ -4,7 +4,7 @@ import argparse
 import sys
 from pathlib import Path
 
-from . import APP_NAME
+from . import APP_NAME, APP_TITLE, __version__
 from .core import (
     BuildOptions,
     PlateJob,
@@ -70,7 +70,11 @@ def list_swap_gcode_command(args: argparse.Namespace) -> int:
 
 
 def create_parser() -> argparse.ArgumentParser:
-    parser = argparse.ArgumentParser(prog="a1-swap-mod-packer", description="Pack repeated Bambu A1 SwapMod plates into one 3MF job.")
+    parser = argparse.ArgumentParser(
+        prog="a1-swap-mod-packer",
+        description=f"{APP_TITLE} - Pack repeated Bambu A1 SwapMod plates into one 3MF job.",
+    )
+    parser.add_argument("--version", action="version", version=f"{APP_NAME} {__version__}")
     subparsers = parser.add_subparsers(dest="command", required=True)
 
     build = subparsers.add_parser("build", help="Build a packed 3MF file.")

a1_swap_mod_packer/gui.py

@@ -43,7 +43,7 @@ try:
 except ImportError as exc:  # pragma: no cover
     raise SystemExit("PySide6 is required to run the GUI. Install it with: pip install PySide6") from exc
 
-from . import APP_NAME
+from . import APP_NAME, APP_TITLE
 from .core import (
     BuildOptions,
     PlateJob,
@@ -265,7 +265,7 @@ class DropTableWidget(QTableWidget):
 class MainWindow(QMainWindow):
     def __init__(self) -> None:
         super().__init__()
-        self.setWindowTitle(APP_NAME)
+        self.setWindowTitle(APP_TITLE)
         self.resize(960, 860)
         self.setAcceptDrops(True)
         self._updating_table = False

tests/test_version.py

@@ -0,0 +1,28 @@
+from __future__ import annotations
+
+import contextlib
+import io
+import unittest
+
+from a1_swap_mod_packer import APP_NAME, APP_TITLE, __version__
+from a1_swap_mod_packer.cli import create_parser
+
+
+class VersionDisplayTest(unittest.TestCase):
+    def test_app_title_uses_shared_version(self) -> None:
+        self.assertEqual(APP_TITLE, f"{APP_NAME} v{__version__}")
+
+    def test_cli_help_and_version_use_shared_version(self) -> None:
+        parser = create_parser()
+        self.assertIn(APP_TITLE, parser.format_help())
+
+        stdout = io.StringIO()
+        with self.assertRaises(SystemExit) as caught, contextlib.redirect_stdout(stdout):
+            parser.parse_args(["--version"])
+
+        self.assertEqual(caught.exception.code, 0)
+        self.assertEqual(stdout.getvalue().strip(), f"{APP_NAME} {__version__}")
+
+
+if __name__ == "__main__":
+    unittest.main()