"""
Tests for the datasette.app.Datasette class
"""
from itsdangerous import BadSignature
from .fixtures import app_client
import pytest


@pytest.fixture
def datasette(app_client):
    return app_client.ds


def test_get_database(datasette):
    db = datasette.get_database("fixtures")
    assert "fixtures" == db.name
    with pytest.raises(KeyError):
        datasette.get_database("missing")


def test_get_database_no_argument(datasette):
    # Returns the first available database:
    db = datasette.get_database()
    assert "fixtures" == db.name


@pytest.mark.parametrize("value", ["hello", 123, {"key": "value"}])
@pytest.mark.parametrize("namespace", [None, "two"])
def test_sign_unsign(datasette, value, namespace):
    extra_args = [namespace] if namespace else []
    signed = datasette.sign(value, *extra_args)
    assert value != signed
    assert value == datasette.unsign(signed, *extra_args)
    with pytest.raises(BadSignature):
        datasette.unsign(signed[:-1] + ("!" if signed[-1] != "!" else ":"))