concurrency

type TestQMI struct {
	QueuedPrs    []string
	RunningQueue []string
	// Removed records the "repoKey|prKey" pairs passed to RemoveFromQueue, so
	// tests can assert whether a queue slot was released.
	Removed *[]string
	// NextInQueue is drained one key per RemoveAndTakeItemFromQueue call, so
	// tests can feed the promotion loop a sequence of candidates.
	NextInQueue *[]string
	// EchoAcquired makes AddListToRunningQueue return exactly the list it was
	// given instead of the fixed RunningQueue, so a test can observe whether a
	// dropped key is still present in the list passed on a later call.
	EchoAcquired bool
	// Passed records the list argument of every AddListToRunningQueue call, in
	// order, so a test can assert what a later retry iteration was given.
	Passed *[][]string
	// Taken counts RemoveAndTakeItemFromQueue calls, so a test can assert the
	// finished PipelineRun's slot was released at least once.
	Taken *int
	// RepeatNext makes RemoveAndTakeItemFromQueue hand out the same key
	// forever, modelling a queue that never releases a slot, so a test can
	// check the caller gives up instead of looping.
	RepeatNext string
}