1 files changed, 42 insertions, 0 deletions
diff --git a/packages/meshbay-node/tests/conftest.py b/packages/meshbay-node/tests/conftest.py
index 9ef23a3..32c9b3d 100644
--- a/packages/meshbay-node/tests/conftest.py
+++ b/packages/meshbay-node/tests/conftest.py
@@ -18,6 +18,48 @@ needs_subprocess = pytest.mark.skipif(
 )
 
 @pytest.fixture(autouse=True)
+def _no_log_file_in_the_developers_profile(monkeypatch):
+    """A test that runs the daemon's entry point must not open its log file.
+
+    On Windows that file is %LOCALAPPDATA%\\meshbay\\state\\node.log -- the
+    developer's own node's log. The first run of the suite with it appended
+    every later test's log lines there, through a handler left on the root
+    logger. A test about the log file points log_file() somewhere of its own.
+    """
+    import logging
+
+    from meshbay_node import platform as _plat
+    monkeypatch.setattr(_plat, "log_file", lambda: None)
+    root = logging.getLogger()
+    before = list(root.handlers)
+    yield
+    for h in root.handlers[:]:
+        if h not in before and getattr(h, "baseFilename", None):
+            root.removeHandler(h)
+            h.close()
+
+
+@pytest.fixture(scope="session")
+def _throwaway_profile(tmp_path_factory):
+    return tmp_path_factory.mktemp("profile")
+
+
+@pytest.fixture(autouse=True)
+def _no_test_touches_the_developers_profile(monkeypatch, _throwaway_profile):
+    """Every per-user location, pointed somewhere nobody lives.
+
+    Tests redirected HOME and nothing else, which isolates nothing on Windows:
+    Path.home() reads USERPROFILE there and the node's own directories come from
+    LOCALAPPDATA. `member invite` and `operator pair`, walked by the CLI tests,
+    wrote their codes into the developer's real node directory and a
+    ~/.local/share/meshbay nobody had, on every run. A test that sets its own
+    HOME still can; it just no longer falls through to the real one.
+    """
+    for var in ("HOME", "USERPROFILE", "LOCALAPPDATA", "APPDATA"):
+        monkeypatch.setenv(var, str(_throwaway_profile / var.lower()))
+
+
+@pytest.fixture(autouse=True)
 def _restore_media_tool_paths():
     """Put `platform`'s resolved ffmpeg/ffprobe paths back after every test.