Function MatchedBy

mock/mock.go:917–931

MatchedBy can be used to match a mock call based on only certain properties from a complex struct or some calculation. It takes a function that will be evaluated with the called argument and will return true when there's a match and false otherwise. Example: m.On("Do", MatchedBy(func(req *http.Re

(fn interface{})

// which returns a bool. If fn doesn't match the required signature,
// MatchedBy() panics.
func MatchedBy(fn interface{}) argumentMatcher {
	fnType := reflect.TypeOf(fn)

	if fnType.Kind() != reflect.Func {
		panic(fmt.Sprintf("assert: arguments: %s is not a func", fn))
	}
	if fnType.NumIn() != 1 {
		panic(fmt.Sprintf("assert: arguments: %s does not take exactly one argument", fn))
	}
	if fnType.NumOut() != 1 || fnType.Out(0).Kind() != reflect.Bool {
		panic(fmt.Sprintf("assert: arguments: %s does not return a bool", fn))
	}

	return argumentMatcher{fn: reflect.ValueOf(fn)}
}

// Get Returns the argument at the specified index.
func (args Arguments) Get(index int) interface{} {