implement windows support of the extension

tests/test_cli.py

@@ -1,4 +1,6 @@
 from pathlib import Path
+from types import SimpleNamespace
+import sys
 
 from click.testing import CliRunner
 from unittest.mock import patch
@@ -31,14 +33,18 @@ def test_project_version_falls_back_to_installed_package_metadata():
         assert _project_version() == "9.9.9"
 
 def test_clients_rename_uses_command_level_browser_target():
-    with patch("browser_cli.cli.send_command") as send_command:
+    with patch("browser_cli.cli.REGISTRY_PATH", Path("/nonexistent/browser-cli-registry.json")), patch(
+        "browser_cli.cli.send_command"
+    ) as send_command:
         result = CliRunner().invoke(main, ["clients", "rename", "--browser", "old-id", "work"])
 
     assert result.exit_code == 0
     send_command.assert_called_once_with("clients.rename_profile", {"alias": "work"}, profile="old-id")
 
 def test_clients_rename_uses_global_browser_target_when_set():
-    with patch("browser_cli.cli.send_command") as send_command:
+    with patch("browser_cli.cli.REGISTRY_PATH", Path("/nonexistent/browser-cli-registry.json")), patch(
+        "browser_cli.cli.send_command"
+    ) as send_command:
         result = CliRunner().invoke(main, ["--browser", "old-id", "clients", "rename", "work"])
 
     assert result.exit_code == 0
@@ -72,6 +78,61 @@ def test_install_help_lists_supported_browsers():
     assert result.exit_code == 0
     assert "[chrome|chromium|brave|edge|vivaldi]" in result.output
 
+
+def test_install_windows_registers_native_host(tmp_path, monkeypatch):
+    local_app_data = tmp_path / "LocalAppData"
+    extension_dir = tmp_path / "extension"
+    extension_dir.mkdir()
+    native_host_src = tmp_path / "native_host.py"
+    native_host_src.write_text("print('ok')", encoding="utf-8")
+    writes = []
+
+    class FakeKey:
+        def __init__(self, path):
+            self.path = path
+
+        def __enter__(self):
+            return self
+
+        def __exit__(self, exc_type, exc, tb):
+            return False
+
+    fake_winreg = SimpleNamespace(
+        HKEY_CURRENT_USER="HKCU",
+        KEY_WRITE=0x20006,
+        KEY_WOW64_32KEY=0x0200,
+        KEY_WOW64_64KEY=0x0100,
+        REG_SZ=1,
+    )
+
+    def fake_create_key(root, path, reserved, access):
+        return FakeKey(path)
+
+    def fake_set_value(key, name, reserved, reg_type, value):
+        writes.append((key.path, name, value))
+
+    fake_winreg.CreateKeyEx = fake_create_key
+    fake_winreg.SetValueEx = fake_set_value
+
+    monkeypatch.setenv("LOCALAPPDATA", str(local_app_data))
+
+    with patch("browser_cli.cli.is_windows", return_value=True), patch(
+        "browser_cli.cli.Path.home", return_value=tmp_path
+    ), patch("browser_cli.cli.click.prompt", return_value="abc123"), patch(
+        "browser_cli.cli.shutil.copy2"
+    ) as copy2, patch("browser_cli.cli.Path.write_text") as write_text, patch.dict(
+        sys.modules, {"winreg": fake_winreg}
+    ):
+        copy2.side_effect = lambda src, dst: Path(dst).write_text(native_host_src.read_text(encoding="utf-8"), encoding="utf-8")
+        result = CliRunner().invoke(main, ["install", "edge"])
+
+    assert result.exit_code == 0
+    assert any("Software\\Microsoft\\Edge\\NativeMessagingHosts\\com.browsercli.host" in path for path, _, _ in writes)
+    assert "Registered native host" in result.output
+    assert "Wrote native host manifest" in result.output
+    wrapper_writes = [call.args[0] for call in write_text.call_args_list if call.args]
+    assert any("@echo off" in text for text in wrapper_writes)
+
 def test_clients_exits_cleanly_when_registry_is_missing():
     with patch("browser_cli.cli.REGISTRY_PATH", Path("/nonexistent/browser-cli-registry.json")):
         result = CliRunner().invoke(main, ["clients"])