chore: import upstream snapshot with attribution

tests/utils/test_credentials.py

@@ -0,0 +1,150 @@
+from unittest import mock
+from unittest.mock import patch
+
+import pytest
+
+from mlflow import get_tracking_uri
+from mlflow.environment_variables import MLFLOW_TRACKING_PASSWORD, MLFLOW_TRACKING_USERNAME
+from mlflow.exceptions import MlflowException
+from mlflow.utils.credentials import login, read_mlflow_creds
+
+
+def test_read_mlflow_creds_file(tmp_path, monkeypatch):
+    monkeypatch.delenv(MLFLOW_TRACKING_USERNAME.name, raising=False)
+    monkeypatch.delenv(MLFLOW_TRACKING_PASSWORD.name, raising=False)
+
+    creds_file = tmp_path.joinpath("credentials")
+    with mock.patch("mlflow.utils.credentials._get_credentials_path", return_value=str(creds_file)):
+        # credentials file does not exist
+        creds = read_mlflow_creds()
+        assert creds.username is None
+        assert creds.password is None
+
+        # credentials file is empty
+        creds = read_mlflow_creds()
+        assert creds.username is None
+        assert creds.password is None
+
+        # password is missing
+        creds_file.write_text(
+            """
+[mlflow]
+mlflow_tracking_username = username
+"""
+        )
+        creds = read_mlflow_creds()
+        assert creds.username == "username"
+        assert creds.password is None
+
+        # username is missing
+        creds_file.write_text(
+            """
+[mlflow]
+mlflow_tracking_password = password
+"""
+        )
+        creds = read_mlflow_creds()
+        assert creds.username is None
+        assert creds.password == "password"
+
+        # valid credentials
+        creds_file.write_text(
+            """
+[mlflow]
+mlflow_tracking_username = username
+mlflow_tracking_password = password
+"""
+        )
+        creds = read_mlflow_creds()
+        assert creds is not None
+        assert creds.username == "username"
+        assert creds.password == "password"
+
+
+@pytest.mark.parametrize(
+    ("username", "password"),
+    [
+        ("username", "password"),
+        ("username", None),
+        (None, "password"),
+        (None, None),
+    ],
+)
+def test_read_mlflow_creds_env(username, password, monkeypatch):
+    if username is None:
+        monkeypatch.delenv(MLFLOW_TRACKING_USERNAME.name, raising=False)
+    else:
+        monkeypatch.setenv(MLFLOW_TRACKING_USERNAME.name, username)
+
+    if password is None:
+        monkeypatch.delenv(MLFLOW_TRACKING_PASSWORD.name, raising=False)
+    else:
+        monkeypatch.setenv(MLFLOW_TRACKING_PASSWORD.name, password)
+
+    creds = read_mlflow_creds()
+    assert creds.username == username
+    assert creds.password == password
+
+
+def test_read_mlflow_creds_env_takes_precedence_over_file(tmp_path, monkeypatch):
+    monkeypatch.setenv(MLFLOW_TRACKING_USERNAME.name, "username_env")
+    monkeypatch.setenv(MLFLOW_TRACKING_PASSWORD.name, "password_env")
+    creds_file = tmp_path.joinpath("credentials")
+    with mock.patch("mlflow.utils.credentials._get_credentials_path", return_value=str(creds_file)):
+        creds_file.write_text(
+            """
+[mlflow]
+mlflow_tracking_username = username_file
+mlflow_tracking_password = password_file
+"""
+        )
+        creds = read_mlflow_creds()
+        assert creds.username == "username_env"
+        assert creds.password == "password_env"
+
+
+def test_mlflow_login(tmp_path, monkeypatch):
+    # Mock `input()` and `getpass()` to return host, username and password in order.
+    with (
+        patch(
+            "builtins.input",
+            side_effect=["https://community.cloud.databricks.com/", "dummyusername"],
+        ),
+        patch("getpass.getpass", side_effect=["dummypassword"]),
+    ):
+        file_name = f"{tmp_path}/.databrickscfg"
+        profile = "TEST"
+        monkeypatch.setenv("DATABRICKS_CONFIG_FILE", file_name)
+        monkeypatch.setenv("DATABRICKS_CONFIG_PROFILE", profile)
+
+        def success():
+            return
+
+        with patch(
+            "mlflow.utils.credentials._validate_databricks_auth",
+            side_effect=[MlflowException("Invalid databricks credentials."), success()],
+        ):
+            login("databricks")
+
+    with open(file_name) as f:
+        lines = f.readlines()
+        assert lines[0] == "[TEST]\n"
+        assert lines[1] == "host = https://community.cloud.databricks.com/\n"
+        assert lines[2] == "username = dummyusername\n"
+        assert lines[3] == "password = dummypassword\n"
+
+    # Assert that the tracking URI is set to the databricks.
+    assert get_tracking_uri() == "databricks"
+
+
+def test_mlflow_login_noninteractive():
+    # Forces mlflow.utils.credentials._validate_databricks_auth to raise `MlflowException()`
+    with patch(
+        "mlflow.utils.credentials._validate_databricks_auth",
+        side_effect=MlflowException("Failed to validate databricks credentials."),
+    ):
+        with pytest.raises(
+            MlflowException,
+            match="No valid Databricks credentials found while running in non-interactive mode",
+        ):
+            login(backend="databricks", interactive=False)