diff --git a/sweepai/core/vector_db_test.py b/sweepai/core/vector_db_test.py
new file mode 100644
index 0000000000..4bbe2b0917
--- /dev/null
+++ b/sweepai/core/vector_db_test.py
@@ -0,0 +1,77 @@
+import pytest
+import numpy as np
+from unittest.mock import patch, MagicMock
+from sweepai.core.vector_db import (
+    cosine_similarity,
+    chunk,
+    multi_get_query_texts_similarity,
+    normalize_l2,
+    embed_text_array,
+    openai_call_embedding,
+)
+
+@pytest.fixture
+def mock_openai_client():
+    with patch("sweepai.core.vector_db.get_embeddings_client") as mock_client:
+        yield mock_client
+
+@pytest.fixture
+def mock_redis_client():
+    with patch("sweepai.core.vector_db.Cache") as mock_cache:
+        yield mock_cache.return_valuedef test_cosine_similarity():
+    a = np.array([[1, 0, 1]])
+    B = np.array([[1, 0, 1], [0, 1, 0], [1, 1, 1]])
+    result = cosine_similarity(a, B)
+    expected = np.array([[1.0, 0.0, 0.8164966]])
+    np.testing.assert_array_almost_equal(result, expected, decimal=6)def test_chunk():
+    texts = ["text1", "text2", "text3", "text4", "text5"]
+    batch_size = 2
+    result = list(chunk(texts, batch_size))
+    expected = [["text1", "text2"], ["text3", "text4"], ["text5"]]
+    assert result == expecteddef test_normalize_l2():
+    x = np.array([[3, 4], [6, 8]])
+    result = normalize_l2(x)
+    expected = np.array([[0.6, 0.8], [0.6, 0.8]])
+    np.testing.assert_array_almost_equal(result, expected, decimal=6)def test_embed_text_array(mock_openai_client):
+    texts = ["Hello, world!", "This is a test."]
+    mock_embeddings = [
+        np.array([0.1, 0.2, 0.3]),
+        np.array([0.4, 0.5, 0.6])
+    ]
+    mock_openai_client.return_value.embeddings.create.return_value.data = [
+        MagicMock(embedding=emb) for emb in mock_embeddings
+    ]
+
+    result = embed_text_array(texts)
+    expected = np.array(mock_embeddings)
+    np.testing.assert_array_almost_equal(result, expected, decimal=6)
+
+    mock_openai_client.return_value.embeddings.create.assert_called_once_with(
+        input=texts, model="text-embedding-3-small", encoding_format="float"
+    )def test_openai_call_embedding_with_cache(mock_redis_client, mock_openai_client):
+    batch = ["Hello, world!", "This is a test."]
+    cache_keys = ["hash1", "hash2"]
+    mock_embeddings = [
+        np.array([0.1, 0.2, 0.3]),
+        np.array([0.4, 0.5, 0.6])
+    ]
+
+    # Simulate cache hit for the first item and cache miss for the second
+    mock_redis_client.get.side_effect = [json.dumps(mock_embeddings[0].tolist()), None]
+    
+    mock_openai_client.return_value.embeddings.create.return_value.data = [
+        MagicMock(embedding=mock_embeddings[1])
+    ]
+
+    with patch("sweepai.core.vector_db.hash_sha256", side_effect=cache_keys):
+        result = openai_call_embedding(batch)
+
+    expected = np.array(mock_embeddings)
+    np.testing.assert_array_almost_equal(result, expected, decimal=6)
+
+    # Check if cache was used for the first item and OpenAI was called for the second
+    mock_redis_client.get.assert_called_with(cache_keys[1] + CACHE_VERSION)
+    mock_openai_client.return_value.embeddings.create.assert_called_once_with(
+        input=[batch[1]], model="text-embedding-3-small", encoding_format="float"
+    )
+    mock_redis_client.set.assert_called_once()
\ No newline at end of file