46 lines
1.2 KiB
Go
46 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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"github.com/onsi/gomega/format"
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"reflect"
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)
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type BeClosedMatcher struct {
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}
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func (matcher *BeClosedMatcher) Match(actual interface{}) (success bool, err error) {
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if !isChan(actual) {
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return false, fmt.Errorf("BeClosed matcher expects a channel. Got:\n%s", format.Object(actual, 1))
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}
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channelType := reflect.TypeOf(actual)
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channelValue := reflect.ValueOf(actual)
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if channelType.ChanDir() == reflect.SendDir {
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return false, fmt.Errorf("BeClosed matcher cannot determine if a send-only channel is closed or open. Got:\n%s", format.Object(actual, 1))
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}
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winnerIndex, _, open := reflect.Select([]reflect.SelectCase{
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reflect.SelectCase{Dir: reflect.SelectRecv, Chan: channelValue},
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reflect.SelectCase{Dir: reflect.SelectDefault},
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})
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var closed bool
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if winnerIndex == 0 {
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closed = !open
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} else if winnerIndex == 1 {
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closed = false
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}
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return closed, nil
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}
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func (matcher *BeClosedMatcher) FailureMessage(actual interface{}) (message string) {
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return format.Message(actual, "to be closed")
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}
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func (matcher *BeClosedMatcher) NegatedFailureMessage(actual interface{}) (message string) {
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return format.Message(actual, "to be open")
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}
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