Add Windows executable build and locked dependencies

tests/test_build_exe.py

@@ -0,0 +1,39 @@
+"""Check frozen-backend collection and guard against accidental cross-builds."""
+
+import contextlib
+import io
+import unittest
+from pathlib import Path
+from unittest.mock import patch
+
+from scripts.build_exe import build_arguments, main
+
+
+class ExeBuildTests(unittest.TestCase):
+    def test_collects_windows_backend_and_keeps_output_in_project(self):
+        root = Path("fixture-project").resolve()
+        args = build_arguments(root)
+        self.assertIn("--onedir", args)
+        self.assertIn("--windowed", args)
+        self.assertEqual(args[args.index("--collect-submodules") + 1], "bleak.backends.winrt")
+        self.assertEqual(args[args.index("--collect-all") + 1], "winrt")
+        self.assertEqual(args[args.index("--distpath") + 1], str(root / "dist"))
+        self.assertEqual(args[-1], str(root / "controller" / "__main__.py"))
+
+    def test_onefile_and_debug_console_are_explicit(self):
+        args = build_arguments(Path("."), onefile=True, console=True)
+        self.assertIn("--onefile", args)
+        self.assertIn("--console", args)
+        self.assertNotIn("--onedir", args)
+        self.assertNotIn("--windowed", args)
+
+    def test_linux_interpreter_does_not_start_a_build(self):
+        with (
+            patch("scripts.build_exe.sys.platform", "linux"),
+            patch("scripts.build_exe.subprocess.run") as run,
+            contextlib.redirect_stderr(io.StringIO()),
+        ):
+            with self.assertRaises(SystemExit) as result:
+                main([])
+        self.assertEqual(result.exception.code, 2)
+        run.assert_not_called()