def METHOD_NAME(self, dataset):
    data = Data(data=dataset, label_name="label")
    assert data._data == dataset
    # All elements in the _labels attribute are integers in the range [0, num_classes - 1]
    num_classes = len(set(data.labels.label_map))
    all_labels_are_ints = np.issubdtype(data.labels.labels.dtype, np.integer)
    assert all_labels_are_ints, f"{data.labels.labels} should be a list of integers"
    assert all(0 <= label < num_classes for label in data.labels.labels)
    assert all(isinstance(label, int) for label in data.labels.label_map.keys())