| package matchers |
| |
| import ( |
| "fmt" |
| "reflect" |
| |
| "github.com/onsi/gomega/format" |
| ) |
| |
| type PanicMatcher struct { |
| object interface{} |
| } |
| |
| func (matcher *PanicMatcher) Match(actual interface{}) (success bool, err error) { |
| if actual == nil { |
| return false, fmt.Errorf("PanicMatcher expects a non-nil actual.") |
| } |
| |
| actualType := reflect.TypeOf(actual) |
| if actualType.Kind() != reflect.Func { |
| return false, fmt.Errorf("PanicMatcher expects a function. Got:\n%s", format.Object(actual, 1)) |
| } |
| if !(actualType.NumIn() == 0 && actualType.NumOut() == 0) { |
| return false, fmt.Errorf("PanicMatcher expects a function with no arguments and no return value. Got:\n%s", format.Object(actual, 1)) |
| } |
| |
| success = false |
| defer func() { |
| if e := recover(); e != nil { |
| matcher.object = e |
| success = true |
| } |
| }() |
| |
| reflect.ValueOf(actual).Call([]reflect.Value{}) |
| |
| return |
| } |
| |
| func (matcher *PanicMatcher) FailureMessage(actual interface{}) (message string) { |
| return format.Message(actual, "to panic") |
| } |
| |
| func (matcher *PanicMatcher) NegatedFailureMessage(actual interface{}) (message string) { |
| return format.Message(actual, fmt.Sprintf("not to panic, but panicked with\n%s", format.Object(matcher.object, 1))) |
| } |