from sachet.server.models import patch

def test_patch():
    """Tests sachet/server/models.py's patch() method for dicts."""

    assert patch(
        dict(),
        dict()
    ) == dict()

    assert patch(
        dict(key="value"),
        dict()
    ) == dict(key="value")

    assert patch(
        dict(key="value"),
        dict(key="newvalue")
    ) == dict(key="newvalue")

    assert patch(
        dict(key="value"),
        dict(key="newvalue")
    ) == dict(key="newvalue")

    assert patch(
        dict(key="value"),
        dict(key2="other_value")
    ) == dict(
        key="value",
        key2="other_value"
    )

    assert patch(
        dict(
            nest = dict(
                key="value",
                key2="other_value"
            )
        ),
        dict(
            top_key="newvalue",
            nest = dict(
                key2 = "new_other_value"
            )
        )
    ) == dict(
        top_key="newvalue",
        nest = dict(
            key="value",
            key2="new_other_value"
        )
    )

    assert patch(
        dict(
            nest = dict(
                key="value",
                list=[1, 2, 3, 4, 5]
            )
        ),
        dict(
            top_key="newvalue",
            nest = dict(
                list = [3, 1, 4, 1, 5]
            )
        )
    ) == dict(
        top_key="newvalue",
        nest = dict(
            key="value",
            list=[3, 1, 4, 1, 5]
        )
    )