BERTopic/tests/test_plotting/test_heatmap.py

import copy
import pytest


@pytest.mark.parametrize('model', [('kmeans_pca_topic_model'),
                                   ('base_topic_model'),
                                   ('custom_topic_model'),
                                   ('merged_topic_model'),
                                   ('reduced_topic_model')])
def test_heatmap(model, request):
    topic_model = copy.deepcopy(request.getfixturevalue(model))
    topics = set(topic_model.topics_)
    if -1 in topics:
        topics.remove(-1)
    fig = topic_model.visualize_heatmap()
    fig_topics = [int(topic.split("_")[0]) for topic in fig.to_dict()["data"][0]["x"]]

    assert set(fig_topics) == topics