golang-testing

Table-driven tests in Go use a slice of structs to define inputs and expected outputs, looping over them with t.Run to execute subtests. This pattern ensures exhaustive input coverage across diverse scenarios while maintaining a single, maintainable test structure.

Go benchmarks use the testing.B type and benchmark functions prefixed with Benchmark to quantify performance. By running go test with benchmark flags, you measure operation timings and detect performance regressions systematically across code changes.

Go fuzzing uses the testing.F type to exercise functions against unexpected inputs and edge cases. By defining a fuzz target, the go test fuzzer automatically generates and feeds random data to your function to uncover hidden panics or bugs.

Yes, standard Go tooling is required. Subtests via t.Run organize granular tests and enable parallel execution by calling t.Parallel, relying entirely on the built-in go test command and native Go testing framework.

Meaningful test coverage in Go is achieved by running go test with the cover flag to generate a coverage profile. This Skill provides structured patterns and guidance to help you build robust tests that actually exercise critical code paths.

Go tests become brittle due to ad-hoc patterns and low coverage, hindering maintainability. Applying TDD-inspired practices with idiomatic patterns like table-driven tests and subtests solves this by introducing structured, organized testing frameworks.