#Test case===================== go test //can run one or more test case //Name convension filename : xxxx_test.go Function : Testxxxxxx //addition_test.go package main import "testing" func TestOnePlusOne(t *testing.T) { //onePlusOne := 1 + 1 //pass onePlusOne := 1 + 0 //fail if onePlusOne != 2 { t.Error("Expected 1 + 1 to equal 2, but got", onePlusOne) } }