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