writes: []string{"abc", "d", "e"},
			want:   "ab\n... omitting 1 bytes ...\nde",
		},
		{
			N:      2,
			writes: []string{"ab______________________yz"},
			want:   "ab\n... omitting 22 bytes ...\nyz",
		},
		{
			N:      2,
			writes: []string{"ab_______________________y", "z"},
			want:   "ab\n... omitting 23 bytes ...\nyz",
		},
	}
	for i, tt := range tests {
		w := &prefixSuffixSaver{N: tt.N}