testability-obstacle

Resolve a Testability Obstacle Introduce the smallest behavior-preserving seam needed to test a specific C# behavior, then add deterministic tests that prove both the behavior and the seam. The production edit is a means to the requested test, not an invitation to redesign adjacent code. When to Use A requested test would otherwise read/write the real filesystem. Behavior depends on the current time, delay, random value, environment, console, process, or another ambient dependency. The user explicitly permits or requests a safe production seam. Existing tests cannot control a dependency without process-global mutation. When Not to Use Show more Installs 1.2K Repository dotnet/skills GitHub Stars 5.5K First Seen Aug 10, 2026 Security Audits Gen Agent Trust Hub Pass Socket Pass Snyk Pass