Add BERTopic.

LLMTopicDetection_BERTopic/tests/test_variations/test_dynamic.py

@@ -0,0 +1,22 @@
+import copy
+import pytest
+
+
+@pytest.mark.parametrize(
+    "model",
+    [
+        ("kmeans_pca_topic_model"),
+        ("custom_topic_model"),
+        ("merged_topic_model"),
+        ("reduced_topic_model"),
+        ("online_topic_model"),
+    ],
+)
+def test_dynamic(model, documents, request):
+    topic_model = copy.deepcopy(request.getfixturevalue(model))
+    timestamps = [i % 10 for i in range(len(documents))]
+    topics_over_time = topic_model.topics_over_time(documents, timestamps)
+
+    assert topics_over_time.Frequency.sum() == len(documents)
+    assert set(topics_over_time.Topic.unique()) == set(topic_model.topics_)
+    assert len(topics_over_time.Timestamp.unique()) == len(set(timestamps))