Test coverage

Run go test ./... to execute all tests in your module and see coverage results. Add the -cover flag to measure code coverage, and -coverprofile=coverage.out to save the data for analysis.

go test -cover ./...

To view a detailed HTML report, generate the profile and open it:

go test -coverprofile=coverage.out ./...
go tool cover -html=coverage.out

Test coverage measures how much of your code is actually run when your tests execute. It helps you find parts of your program that lack tests, ensuring your software is reliable. Think of it as a map showing which roads in your city have been driven on and which are still empty.