WIP erroneous backend tests

tests/conftest.py

@@ -133,6 +133,19 @@ def delete_password(self, service: str, username: str | None) -> None:
         raise KeyringLocked()
 
 
+from keyring import backends
+from keyring.errors import KeyringError
+
+
+class ErroneousBackend(backends.fail.Keyring):
+    @classmethod
+    def priority(cls) -> int:
+        return 42
+
+    def get_credential(self, service: str, username: str | None) -> Any:
+        raise KeyringError()
+
+
 @pytest.fixture()
 def dummy_keyring() -> DummyBackend:
     return DummyBackend()
@@ -155,6 +168,11 @@ def with_locked_keyring() -> None:
     keyring.set_keyring(LockedBackend())  # type: ignore[no-untyped-call]
 
 
+@pytest.fixture()
+def with_erroneous_keyring() -> None:
+    keyring.set_keyring(ErroneousBackend())  # type: ignore[no-untyped-call]
+
+
 @pytest.fixture()
 def with_null_keyring() -> None:
     from keyring.backends.null import Keyring

tests/utils/test_password_manager.py

@@ -235,6 +235,12 @@ def test_locked_keyring_should_be_available(with_locked_keyring: None) -> None:
     assert key_ring.is_available()
 
 
+def test_erroneous_keyring_should_be_available(with_erroneous_keyring: None) -> None:
+    key_ring = PoetryKeyring("poetry")
+
+    assert key_ring.is_available()
+
+
 def test_get_http_auth_from_environment_variables(
     environ: None, config: Config
 ) -> None: