我有一个大致如下的代码库
type Service struct {
Repo repo // An interface that contains both FunctionOne and FunctionTwo
GoRoutineWaitgroup *sync.WaitGroup
}
func (impl *Service) MyFunction(s string) bool {
a := impl.Repo.FunctionOne()
b := impl.Repo.FunctionTwo()
fmt.Println("Executed Function One and Function two")
go impl.validateMyFunction(a,b)
return true
}
func (impl *Service) validateMyFunction(a string,b string) {
defer helpers.PanicHandler()
impl.GoRoutineWaitgroup.Add(1)
defer impl.GoRoutineWaitgroup.Done()
fmt.Println("a and b are validated")
}
我编写了与此类似的单元测试。
func TestMyFunction(t *testing.T) {
ms := &Service{}
test := []struct{
input string
output bool
case string
}{
{"a", true, sample}
}
}
for _, test := range tests {
t.Run(test.case, func(t *testing.T) {
mockRepo := new(mockrepo.Repo) // mockRepo contains mocks of original repo layer methods generated using mockery for testing purposes
mockRepo.On("FunctionOne")
mockRepo.On("FunctionTwo")
ms.Repo = mockRepo
op := ms.MyFunction(test.input)
assert.Equal(t, test.Output, op)
})
}
} // Please keep in mind that this is not my actual code, but just a basic structure.
所有测试均成功。但是在执行命令时go test -v
,我在代码中看到程序出现恐慌并给出的多个地方invalid memory address or nil pointer dereference
。我在调试模式下检查了代码,并意识到问题出impl.GoRoutineWaitgroup.Add(1)
在方法上validateMyFunction
,当我注释掉go validateMyFunction(a,b)
并再次运行测试时,日志中没有出现恐慌。那么我该如何解决这个问题呢?如何处理从内部启动 goroutine 的函数的单元测试(如本例所示)?