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TestPathValidation Class — langchain Architecture

Architecture documentation for the TestPathValidation class in test_anthropic_tools.py from the langchain codebase.

Class python

Entity Profile

Dependency Diagram

graph TD
  9599afe1_8f2e_3733_d25a_c88263c5beba["TestPathValidation"]
  ed6269fc_1a0e_6b64_f39f_7fdd1e5bcdc1["test_anthropic_tools.py"]
  9599afe1_8f2e_3733_d25a_c88263c5beba -->|defined in| ed6269fc_1a0e_6b64_f39f_7fdd1e5bcdc1
  197e3c5b_e452_7cc3_3c4a_c8624399625b["test_basic_path_normalization()"]
  9599afe1_8f2e_3733_d25a_c88263c5beba -->|method| 197e3c5b_e452_7cc3_3c4a_c8624399625b
  cd281996_3ab9_a665_33f3_7192025038ae["test_path_traversal_blocked()"]
  9599afe1_8f2e_3733_d25a_c88263c5beba -->|method| cd281996_3ab9_a665_33f3_7192025038ae
  ad7b811c_8e18_660c_351b_524e108f597a["test_allowed_prefixes()"]
  9599afe1_8f2e_3733_d25a_c88263c5beba -->|method| ad7b811c_8e18_660c_351b_524e108f597a
  be7d0b10_b401_d01d_8733_10f5174645c8["test_memories_prefix()"]
  9599afe1_8f2e_3733_d25a_c88263c5beba -->|method| be7d0b10_b401_d01d_8733_10f5174645c8

Relationship Graph

Source Code

libs/partners/anthropic/tests/unit_tests/middleware/test_anthropic_tools.py lines 17–63

class TestPathValidation:
    """Test path validation and security."""

    def test_basic_path_normalization(self) -> None:
        """Test basic path normalization."""
        assert _validate_path("/foo/bar") == "/foo/bar"
        assert _validate_path("foo/bar") == "/foo/bar"
        assert _validate_path("/foo//bar") == "/foo/bar"
        assert _validate_path("/foo/./bar") == "/foo/bar"

    def test_path_traversal_blocked(self) -> None:
        """Test that path traversal attempts are blocked."""
        with pytest.raises(ValueError, match="Path traversal not allowed"):
            _validate_path("/foo/../etc/passwd")

        with pytest.raises(ValueError, match="Path traversal not allowed"):
            _validate_path("../etc/passwd")

        with pytest.raises(ValueError, match="Path traversal not allowed"):
            _validate_path("~/.ssh/id_rsa")

    def test_allowed_prefixes(self) -> None:
        """Test path prefix validation."""
        # Should pass
        assert (
            _validate_path("/workspace/file.txt", allowed_prefixes=["/workspace"])
            == "/workspace/file.txt"
        )

        # Should fail
        with pytest.raises(ValueError, match="Path must start with"):
            _validate_path("/etc/passwd", allowed_prefixes=["/workspace"])

        with pytest.raises(ValueError, match="Path must start with"):
            _validate_path(
                "/workspacemalicious/file.txt", allowed_prefixes=["/workspace/"]
            )

    def test_memories_prefix(self) -> None:
        """Test /memories prefix validation for memory tools."""
        assert (
            _validate_path("/memories/notes.txt", allowed_prefixes=["/memories"])
            == "/memories/notes.txt"
        )

        with pytest.raises(ValueError, match="Path must start with"):
            _validate_path("/other/notes.txt", allowed_prefixes=["/memories"])

Defined In

Source

Frequently Asked Questions

What is the TestPathValidation class?
TestPathValidation is a class in the langchain codebase, defined in libs/partners/anthropic/tests/unit_tests/middleware/test_anthropic_tools.py.
Where is TestPathValidation defined?
TestPathValidation is defined in libs/partners/anthropic/tests/unit_tests/middleware/test_anthropic_tools.py at line 17.

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