Is Test Double Safe?

Test Double — Nerq Trust Score 48.2/100 (D grade). Based on analysis of 2 trust dimensions, it is has notable safety concerns. Last updated: 2026-06-07.

Exercise caution with Test Double. Test Double is a Rust crate with a Nerq Trust Score of 48.2/100 (D), based on 3 independent data dimensions. Below the recommended threshold of 70. Security: 90/100. Popularity: 0/100. Data sourced from crates.io registry, GitHub, NVD, and RustSec advisory database. Last updated: 2026-03-25. Machine-readable data (JSON).

Safety Guide: Test Double

What is Test Double?

Test Double is a Rust crate — Procedural macro for substituting one type for another when testing..

How to Verify Safety

Run cargo audit. Review on crates.io for activity.

You can also check the trust score via API: GET /v1/preflight?target=test_double

Key Safety Concerns for Rust crate

When evaluating any Rust crate, watch for: dependency vulnerabilities, unsafe code, maintenance status.

Trust Assessment

Test Double has a Nerq Trust Score of 48/100 (D) and has not yet reached Nerq trust threshold (70+). This score is based on automated analysis of security, maintenance, community, and quality signals.

Key Takeaways

• Test Double has a Trust Score of 48/100 (D).
• Review carefully before use — below trust threshold.
• Always verify independently using the Nerq API.

Disclaimer: Nerq trust scores are automated assessments based on publicly available signals. They are not endorsements or guarantees. Always conduct your own due diligence.