t.Fatalf("on line %d/2; ReadLine=%#v, %v; want non-nil line or Error, but not both",
				i+1, l, err)
		}
	}
}

type readLineResult struct {
	line     []byte
	isPrefix bool
	err      error
}

var readLineNewlinesTests = []struct {
	input  string
	expect []readLineResult
}{
	{"012345678901234\r\n012345678901234\r\n", []readLineResult{
		{[]byte("012345678901234"), true, nil},