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