}
}

func TestReadZero(t *testing.T) {
	for _, size := range []int{100, 2} {
		t.Run(fmt.Sprintf("bufsize=%d", size), func(t *testing.T) {
			r := io.MultiReader(strings.NewReader("abc"), &emptyThenNonEmptyReader{r: strings.NewReader("def"), n: 1})
			br := NewReaderSize(r, size)
			want := func(s string, wantErr error) {
				p := make([]byte, 50)
				n, err := br.Read(p)