}

type customDoneContext struct {
	Context
	donec chan struct{}
}

func (c *customDoneContext) Done() <-chan struct{} {
	return c.donec
}

func TestCustomContextPropagation(t *testing.T) {
	cause := errors.New("TestCustomContextPropagation")
	donec := make(chan struct{})
	ctx1, cancel1 := WithCancelCause(Background())
	ctx2 := &customDoneContext{
		Context: ctx1,
		donec:   donec,
	}