tests/_internal/remotes(fix) Clear env tokens in authentication tests

why: Tests for is_authenticated=False were failing because tokens from
environment variables (GITHUB_TOKEN, GITLAB_TOKEN, etc.) were being detected.

what:
- Add monkeypatch to clear token env vars in test_*_is_authenticated_without_token
- Fix test_gitlab_search_requires_auth to clear GITLAB_TOKEN/GL_TOKEN
- Add pytest import to test_gitea.py

Author: tony

tests/_internal/remotes/test_gitea.py

@@ -5,6 +5,8 @@
 import json
 import typing as t
 
+import pytest
+
 from vcspull._internal.remotes.base import ImportMode, ImportOptions
 from vcspull._internal.remotes.gitea import GiteaImporter
 
@@ -104,8 +106,14 @@ def test_gitea_importer_service_name() -> None:
     assert importer.service_name == "Gitea"
 
 
-def test_gitea_importer_is_authenticated_without_token() -> None:
+def test_gitea_importer_is_authenticated_without_token(
+    monkeypatch: pytest.MonkeyPatch,
+) -> None:
     """Test is_authenticated returns False without token."""
+    # Clear environment variables that could provide a token
+    monkeypatch.delenv("CODEBERG_TOKEN", raising=False)
+    monkeypatch.delenv("GITEA_TOKEN", raising=False)
+    monkeypatch.delenv("FORGEJO_TOKEN", raising=False)
     importer = GiteaImporter(token=None)
     assert importer.is_authenticated is False
 

tests/_internal/remotes/test_github.py

@@ -310,8 +310,13 @@ def test_github_fetch_search(
     assert repos[0].stars == 1000
 
 
-def test_github_importer_is_authenticated_without_token() -> None:
+def test_github_importer_is_authenticated_without_token(
+    monkeypatch: pytest.MonkeyPatch,
+) -> None:
     """Test is_authenticated returns False without token."""
+    # Clear environment variables that could provide a token
+    monkeypatch.delenv("GITHUB_TOKEN", raising=False)
+    monkeypatch.delenv("GH_TOKEN", raising=False)
     importer = GitHubImporter(token=None)
     assert importer.is_authenticated is False
 

tests/_internal/remotes/test_gitlab.py

@@ -52,10 +52,15 @@ def test_gitlab_fetch_group(
     assert repos[0].name == "group-project"
 
 
-def test_gitlab_search_requires_auth() -> None:
+def test_gitlab_search_requires_auth(
+    monkeypatch: pytest.MonkeyPatch,
+) -> None:
     """Test GitLab search raises error without authentication."""
     from vcspull._internal.remotes.base import AuthenticationError
 
+    # Clear environment variables that could provide a token
+    monkeypatch.delenv("GITLAB_TOKEN", raising=False)
+    monkeypatch.delenv("GL_TOKEN", raising=False)
     importer = GitLabImporter(token=None)
     options = ImportOptions(mode=ImportMode.SEARCH, target="test")
     with pytest.raises(AuthenticationError, match="requires authentication"):
@@ -88,8 +93,13 @@ def test_gitlab_search_with_auth(
     assert repos[0].name == "search-result"
 
 
-def test_gitlab_importer_is_authenticated_without_token() -> None:
+def test_gitlab_importer_is_authenticated_without_token(
+    monkeypatch: pytest.MonkeyPatch,
+) -> None:
     """Test is_authenticated returns False without token."""
+    # Clear environment variables that could provide a token
+    monkeypatch.delenv("GITLAB_TOKEN", raising=False)
+    monkeypatch.delenv("GL_TOKEN", raising=False)
     importer = GitLabImporter(token=None)
     assert importer.is_authenticated is False