go-testing

Table-driven tests in Go use a slice of structs to define test cases, iterating over them with t.Run subtests to isolate failures. This pattern standardizes data-driven coverage, ensuring consistent test execution across development and CI workflows.

Manual mocking for Go interfaces involves implementing the interface with a custom test struct. This approach enables isolated testing without external dependencies, ensuring reliable and maintainable mocks across your test suites.

t.Helper() marks test helper functions so failures report the caller's line instead of the helper's line. This improves failure diagnostics by pointing directly to the failing test case, streamlining debugging in complex test suites.

Benchmarks in Go use the Benchmark prefix and testing.B to measure performance. Apply race detection guidance by running tests with the -race flag to identify concurrent data races during benchmarking and standard test execution.

Yes, synctest patterns integrate deterministic concurrency testing into Go projects. Available in Go 1.25+, these patterns help control goroutine scheduling, ensuring reliable and predictable testing of concurrent code without flaky behavior.

Use t.Run subtests when grouping related test cases under a single test function, such as in table-driven tests. This approach provides better test organization, allows targeted execution of individual cases, and simplifies failure reporting.