from unittest import mock

from datahub.ingestion.api.common import PipelineContext
from datahub.ingestion.source.sql.postgres import PostgresConfig, PostgresSource


def _base_config():
    return {"username": "user", "password": "password", "host_port": "host:1521"}


def test_database_alias_takes_precendence():
    config = PostgresConfig.parse_obj(
        {
            **_base_config(),
            "database_alias": "ops_database",
            "database": "postgres",
        }
    )
    mock_inspector = mock.MagicMock()
    assert (
        PostgresSource(config, PipelineContext(run_id="test")).get_identifier(
            schema="superset", entity="logs", inspector=mock_inspector
        )
        == "ops_database.superset.logs"
    )


def test_database_in_identifier():
    config = PostgresConfig.parse_obj({**_base_config(), "database": "postgres"})
    mock_inspector = mock.MagicMock()
    assert (
        PostgresSource(config, PipelineContext(run_id="test")).get_identifier(
            schema="superset", entity="logs", inspector=mock_inspector
        )
        == "postgres.superset.logs"
    )


def test_current_sqlalchemy_database_in_identifier():
    config = PostgresConfig.parse_obj({**_base_config()})
    mock_inspector = mock.MagicMock()
    mock_inspector.engine.url.database = "current_db"
    assert (
        PostgresSource(config, PipelineContext(run_id="test")).get_identifier(
            schema="superset", entity="logs", inspector=mock_inspector
        )
        == "current_db.superset.logs"
    )