def test_can_delete_keys():
    backend = SQLiteExampleDatabase(':memory:')
    backend.save(b'foo', b'bar')
    backend.save(b'foo', b'baz')
    backend.delete(b'foo', b'bar')
    assert list(backend.fetch(b'foo')) == [b'baz']
def test_can_delete_keys():
    backend = SQLiteExampleDatabase(':memory:')
    backend.save(b'foo', b'bar')
    backend.save(b'foo', b'baz')
    backend.delete(b'foo', b'bar')
    assert list(backend.fetch(b'foo')) == [b'baz']