Curriculum Idioms & ecosystem Testing exercise 5 · fill-word
Testing
Type the method on *testing.T that reports a failure
WITH a printf-style format string. (Counterpart to bare
t.Error(args...).)
TypeScript reference
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About this theme
Go has a testing package in the standard library. Tests live next to code in _test.go files. The pattern is table-driven: a slice of (name, input, want) tuples plus t.Run(name, ...) for subtests. No assertion library required — if got != want { t.Errorf(...) } is the whole vocabulary.