test_opposite_vectors() — langchain Function Reference

Architecture documentation for the test_opposite_vectors() function in test_utils.py from the langchain codebase.

Function python LangChainCore ApiManagement

Entity Profile

LangChainCore→ ApiManagement→ test_opposite_vectors() — langchain Function Reference

Dependency Diagram

graph TD
  be78d4f5_55ca_2145_5d59_3b90db1e3911["test_opposite_vectors()"]
  43305d93_a58a_e7db_615b_b8a5a18284ab["TestCosineSimilarity"]
  be78d4f5_55ca_2145_5d59_3b90db1e3911 -->|defined in| 43305d93_a58a_e7db_615b_b8a5a18284ab
  style be78d4f5_55ca_2145_5d59_3b90db1e3911 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

libs/core/tests/unit_tests/vectorstores/test_utils.py lines 33–39

    def test_opposite_vectors(self) -> None:
        """Test cosine similarity of opposite vectors."""
        x: list[list[float]] = [[1, 2, 3]]
        y: list[list[float]] = [[-1, -2, -3]]
        result = _cosine_similarity(x, y)
        expected = np.array([[-1.0]])
        np.testing.assert_array_almost_equal(result, expected)