matcher.go

func BeARunningProcess() types.GomegaMatcher {
	return &BeARunningProcessMatcher{}
}

type BeARunningProcessMatcher struct {
	actualPid int
}

func (matcher *BeARunningProcessMatcher) Match(actual interface{}) (bool, error) {
	pid, ok := actual.(int)
	if !ok {
		return false, fmt.Errorf("BeARunningProcess must be passed an integer pid. Got\n%s", format.Object(actual, 1))
	}

	matcher.actualPid = pid
	return unix.Kill(pid, unix.Signal(0)) == nil, nil
}

func (matcher *BeARunningProcessMatcher) FailureMessage(actual interface{}) string {
	return fmt.Sprintf("Expected pid %d to be a running process", matcher.actualPid)
}

func (matcher *BeARunningProcessMatcher) NegatedFailureMessage(actual interface{}) string {
	return fmt.Sprintf("Expected pid %d not to be a running process", matcher.actualPid)
}