Structure .NET 10 xUnit and integration tests with WebApplicationFactory and Testcontainers.
npx skills add https://github.com/Resgrid/Core --skill testing-resgrid
Please help me install this Agent Skill. Skill: testing Source: https://github.com/Resgrid/Core/tree/main/.opencode/skills/testing Command: npx skills add https://github.com/Resgrid/Core --skill testing-resgrid
This Skill reduces flaky or low-signal test suites by showing how to structure .NET 10 tests for maximum coverage of behavior, including integration scenarios.
Load this Skill when setting up your .NET 10 test infrastructure or when you’re improving or reviewing your test coverage for xUnit, integration tests, Testcontainers, Verify, or time-dependent logic.
High-intent search queries and answers about installing and using this skill.
Structure reliable .NET integration tests using WebApplicationFactory to exercise the full HTTP pipeline and Testcontainers for real database validation, ensuring your tests catch actual bugs instead of hiding issues with in-memory providers.
In-memory databases cause flaky xUnit tests by hiding real persistence issues. Using Testcontainers to run actual PostgreSQL or SQL Server containers provides real database confidence and prevents low-signal test suite failures.
Handle time-dependent logic in .NET testing by using FakeTimeProvider for deterministic time manipulation. This ensures your xUnit tests remain reliable and repeatable without relying on actual system clock behavior.
Yes, you can use snapshot testing with Verify for complex .NET objects. It allows you to verify snapshot responses easily, keeping your integration tests maintainable while validating full HTTP API response structures.
Yes, WebApplicationFactory supports testing full HTTP pipelines in .NET 10. It exercises routing, validation, business logic, and persistence with deterministic fixtures for high-value integration testing workflows.
You need Testcontainers instead of in-memory providers when requiring real database confidence. Testcontainers runs actual PostgreSQL or SQL Server containers to prevent hidden issues and validate true persistence behavior in xUnit tests.
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