implement windows support of the extension

tests/test_platform.py

@@ -0,0 +1,30 @@
+from pathlib import Path
+
+from browser_cli.platform import endpoint_for_alias, install_base_dir, registry_path, runtime_dir
+
+
+def test_runtime_dir_defaults_to_tmp_on_unix(monkeypatch):
+    monkeypatch.setattr("browser_cli.platform.is_windows", lambda: False)
+
+    assert runtime_dir() == Path("/tmp/.browser_cli")
+
+
+def test_runtime_dir_uses_localappdata_on_windows(monkeypatch, tmp_path):
+    monkeypatch.setattr("browser_cli.platform.is_windows", lambda: True)
+    monkeypatch.setenv("LOCALAPPDATA", str(tmp_path / "LocalAppData"))
+
+    assert runtime_dir() == tmp_path / "LocalAppData" / "browser-cli"
+    assert registry_path() == tmp_path / "LocalAppData" / "browser-cli" / "registry.json"
+
+
+def test_endpoint_for_alias_uses_pipe_on_windows(monkeypatch):
+    monkeypatch.setattr("browser_cli.platform.is_windows", lambda: True)
+
+    assert endpoint_for_alias("work/browser") == r"\\.\pipe\browser-cli-work_browser"
+
+
+def test_install_base_dir_uses_runtime_dir_on_windows(monkeypatch, tmp_path):
+    monkeypatch.setattr("browser_cli.platform.is_windows", lambda: True)
+    monkeypatch.setenv("LOCALAPPDATA", str(tmp_path / "LocalAppData"))
+
+    assert install_base_dir() == tmp_path / "LocalAppData" / "browser-cli"