tests/unit_tests/models/slice_test.py

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import uuid
from unittest.mock import MagicMock, patch

import pytest
from parameterized import parameterized

from superset.models.slice import id_or_uuid_filter, Slice


class TestSlice:
    """Test cases for Slice model functionality."""

    @parameterized.expand(
        [
            ("numeric_id", "123"),
            ("uuid_string", "550e8400-e29b-41d4-a716-446655440000"),
        ]
    )
    def test_slice_get_calls_filter_correctly(self, test_name, id_or_uuid):
        """Test Slice.get() calls filter() correctly for ID and UUID."""
        with patch("superset.models.slice.db") as mock_db:
            # Setup mock chain
            mock_query = MagicMock()
            mock_filtered_query = MagicMock()
            mock_db.session.query.return_value = mock_query
            mock_query.filter.return_value = mock_filtered_query
            mock_filtered_query.one_or_none.return_value = None

            # Call the method
            result = Slice.get(id_or_uuid)

            # Verify correct methods called
            mock_db.session.query.assert_called_once_with(Slice)
            mock_query.filter.assert_called_once()  # Not filter_by!
            mock_filtered_query.one_or_none.assert_called_once()
            assert result is None

    @parameterized.expand(
        [
            ("numeric_id", "123"),
            ("large_id", "999999"),
            ("uuid_string", str(uuid.uuid4())),
        ]
    )
    def test_slice_get_no_type_error(self, test_name, input_value):
        """Verify Slice.get() doesn't raise TypeError for various inputs."""
        try:
            result = Slice.get(input_value)
            # Success - no TypeError, result can be None or a Slice
            assert result is None or hasattr(result, "id")
        except TypeError as e:
            if "filter_by() takes 1 positional argument" in str(e):
                pytest.fail(
                    f"filter_by() bug exists: Slice.get('{input_value}') failed with {e}"  # noqa: E501
                )
            else:
                raise

    @parameterized.expand(
        [
            ("numeric_id", "123"),
            ("uuid_format", "550e8400-e29b-41d4-a716-446655440000"),
            ("invalid_string", "not-a-number"),
        ]
    )
    def test_id_or_uuid_filter(self, test_name, input_value):
        """Test id_or_uuid_filter returns correct BinaryExpression."""
        result = id_or_uuid_filter(input_value)
        assert result is not None