rust-unsafe-env-mutation
CommunitySafely serialize Rust env var mutations in tests.
Author89jobrien
Version1.0.0
Installs0
System Documentation
What problem does it solve?
In Rust 2024, mutating process-wide environment variables with std::env::set_var or remove_var can cause data races when tests run in parallel. This pattern introduces a static Mutex<()> to serialize access and prevent flaky CI results.
Core Features & Use Cases
- Serialization with a shared mutex: guard env var mutations behind a single lock to ensure consistency across tests.
- Cross-file safety: applies to multiple test modules that touch the same environment variables.
- Cleanup guarantees: ensures env vars are restored after tests, even if a test panics.
Quick Start
Create a static ENV_MUTEX and wrap all env-var mutations with a lock around the critical section.
Dependency Matrix
Required Modules
None requiredComponents
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