Create Thüringen branding edition on shared core

tests/test_edition.py

@@ -0,0 +1,28 @@
+from __future__ import annotations
+
+import unittest
+
+import synadm_tui
+from synadm_tui.app import App
+from synadm_tui.runner import SynadmRunner
+from synadm_tui_thueringen import __version__
+from synadm_tui_thueringen.theme import THURINGIA_EDITION, THURINGIA_THEME
+
+
+class EditionTests(unittest.TestCase):
+    def test_core_and_overlay_versions_match(self) -> None:
+        self.assertEqual(__version__, synadm_tui.__version__)
+
+    def test_theme_assets_are_external_and_complete(self) -> None:
+        self.assertTrue(THURINGIA_THEME.image_path.is_file())
+        self.assertTrue(THURINGIA_THEME.block_path.is_file())
+        self.assertEqual(len(THURINGIA_THEME.palette), 9)
+
+    def test_core_accepts_external_edition(self) -> None:
+        app = App(SynadmRunner("not-installed"), THURINGIA_EDITION, (THURINGIA_THEME,))
+        self.assertEqual(app.theme.key, "thuringia")
+        self.assertEqual(app.edition.binary_name, "synadm-tui-thueringen")
+
+
+if __name__ == "__main__":
+    unittest.main()