Add tests for reading/mmaping quantized embeddings

Fixes #56.

tests/conftest.py

@@ -25,6 +25,16 @@ def similarity_fifu(tests_root):
     yield finalfusion.Embeddings(os.path.join(tests_root, "similarity.fifu"))
 
 
+@pytest.fixture
+def similarity_pq(tests_root):
+    yield finalfusion.Embeddings(os.path.join(tests_root, "similarity-pq.fifu"))
+
+
+@pytest.fixture
+def similarity_pq_mmap(tests_root):
+    yield finalfusion.Embeddings(os.path.join(tests_root, "similarity-pq.fifu"), mmap=True)
+
+
 @pytest.fixture
 def subword_fifu(tests_root):
     yield finalfusion.Embeddings(os.path.join(tests_root, "subword.fifu"))

tests/test_embeddings.py

@@ -30,6 +30,20 @@ def test_embeddings(embeddings_fifu, embeddings_text, embeddings_text_dims):
             embedding.embedding, embeddings_text_dims[embedding.word]), "FiFu and textdims embedding mismatch"
 
 
+def test_embeddings_pq(similarity_fifu, similarity_pq):
+    for embedding in similarity_fifu:
+        embedding_pq = similarity_pq.embedding("Berlin")
+        assert numpy.allclose(embedding.embedding, embedding_pq,
+                              atol=0.3), "Embedding and quantized embedding mismatch"
+
+
+def test_embeddings_pq_mmap(similarity_fifu, similarity_pq_mmap):
+    for embedding in similarity_fifu:
+        embedding_pq = similarity_pq_mmap.embedding("Berlin")
+        assert numpy.allclose(embedding.embedding, embedding_pq,
+                              atol=0.3), "Embedding and quantized embedding mismatch"
+
+
 def test_embeddings_with_norms_oov(embeddings_fifu):
     assert embeddings_fifu.embedding_with_norm(
         "Something out of vocabulary") is None