// RPC messages until it's stopped. The process is stopped and cleaned up
// automatically when the test is done.
func newWorkerForTest(tb testing.TB) *worker {
	tb.Helper()
	c, err := newCoordinator(CoordinateFuzzingOpts{
		Types: []reflect.Type{reflect.TypeOf([]byte(nil))},
		Log:   io.Discard,
	})
	if err != nil {
		tb.Fatal(err)
	}
	dir := ""             // same as self