package fakematcher import "fmt" type FakeMatcher struct { ReceivedActual interface{} MatchesToReturn bool ErrToReturn error } func (matcher *FakeMatcher) Match(actual interface{}) (bool, error) { matcher.ReceivedActual = actual return matcher.MatchesToReturn, matcher.ErrToReturn } func (matcher *FakeMatcher) FailureMessage(actual interface{}) string { return fmt.Sprintf("positive: %v", actual) } func (matcher *FakeMatcher) NegatedFailureMessage(actual interface{}) string { return fmt.Sprintf("negative: %v", actual) }