test: isolate integration test home (#3144)

* test: isolate integration test home

Assisted-by: Codex (model: GPT-5, autonomous)

* test: assert integration home isolation

Assisted-by: Codex (model: GPT-5, autonomous)

* test: extend integration home isolation to module-scoped setup

Address Copilot review on #3144.

Add a session-scoped autouse fixture so HOME/USERPROFILE/XDG are redirected
for setup that runs outside a test function (e.g. the module-scoped status_*
fixtures in test_integration_subcommand.py that run `specify init` before any
per-test isolation applies). The function-scoped fixture still overrides HOME
per test.

Also assert Path.home() resolves to the isolated home, since most integrations
(Hermes, catalog) read the home via that API rather than the env vars directly.

tests/integrations/conftest.py

@@ -5,10 +5,8 @@ import pytest
 from specify_cli.integrations.base import MarkdownIntegration
 
 
-@pytest.fixture(autouse=True)
-def _isolate_integration_home(monkeypatch: pytest.MonkeyPatch, tmp_path):
-    """Keep integration tests from reading or writing the real user home."""
-    home = tmp_path / "home"
+def _redirect_home(monkeypatch: pytest.MonkeyPatch, home) -> None:
+    """Point HOME/USERPROFILE/XDG env vars at an isolated *home* directory."""
     for path in (home, home / ".cache", home / ".config", home / ".local" / "share"):
         path.mkdir(parents=True, exist_ok=True)
 
@@ -19,6 +17,28 @@ def _isolate_integration_home(monkeypatch: pytest.MonkeyPatch, tmp_path):
     monkeypatch.setenv("XDG_DATA_HOME", str(home / ".local" / "share"))
 
 
+@pytest.fixture(scope="session", autouse=True)
+def _isolate_integration_home_session(tmp_path_factory):
+    """Isolate the user home for setup that runs outside a test function.
+
+    The per-test fixture below re-points HOME for each test, but function-scoped
+    fixtures do not apply to module-/session-scoped fixtures. Some of those (e.g.
+    the ``status_*_template`` fixtures in ``test_integration_subcommand.py``) run
+    ``specify init`` during setup, before any per-test isolation takes effect.
+    A standalone ``MonkeyPatch`` gives them an isolated home too.
+    """
+    monkeypatch = pytest.MonkeyPatch()
+    _redirect_home(monkeypatch, tmp_path_factory.mktemp("session-home"))
+    yield
+    monkeypatch.undo()
+
+
+@pytest.fixture(autouse=True)
+def _isolate_integration_home(monkeypatch: pytest.MonkeyPatch, tmp_path):
+    """Keep integration tests from reading or writing the real user home."""
+    _redirect_home(monkeypatch, tmp_path / "home")
+
+
 class StubIntegration(MarkdownIntegration):
     """Minimal concrete integration for testing."""
 

tests/integrations/test_home_isolation.py

@@ -15,6 +15,10 @@ def test_integration_tests_use_tmp_home(tmp_path: Path) -> None:
     assert Path(os.environ["XDG_CONFIG_HOME"]) == home / ".config"
     assert Path(os.environ["XDG_DATA_HOME"]) == home / ".local" / "share"
 
+    # Most integrations resolve the user home via Path.home() (e.g. Hermes,
+    # catalog), so the isolation has to reach that API, not just the env vars.
+    assert Path.home() == home
+
     assert home.is_dir()
     assert (home / ".cache").is_dir()
     assert (home / ".config").is_dir()