use std::io::BufWriter;

fn get_rep_bytes(n: usize) -> Vec<u8> {
	std::iter::repeat((0..=255).collect::<Vec<u8>>()).flatten().take(n).collect()
}

#[test]
fn default_hexdump() {
	let hexxdump = hexxdump::DEFAULT;
	let bs = get_rep_bytes(0x100);
	let expected_output = concat!(
		"0000: 00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f  ................\n",
		"0010: 10 11 12 13 14 15 16 17 18 19 1a 1b 1c 1d 1e 1f  ................\n",
		"0020: 20 21 22 23 24 25 26 27 28 29 2a 2b 2c 2d 2e 2f   !\"#$%&'()*+,-./\n",
		"0030: 30 31 32 33 34 35 36 37 38 39 3a 3b 3c 3d 3e 3f  0123456789:;<=>?\n",
		"0040: 40 41 42 43 44 45 46 47 48 49 4a 4b 4c 4d 4e 4f  @ABCDEFGHIJKLMNO\n",
		"0050: 50 51 52 53 54 55 56 57 58 59 5a 5b 5c 5d 5e 5f  PQRSTUVWXYZ[\\]^_\n",
		"0060: 60 61 62 63 64 65 66 67 68 69 6a 6b 6c 6d 6e 6f  `abcdefghijklmno\n",
		"0070: 70 71 72 73 74 75 76 77 78 79 7a 7b 7c 7d 7e 7f  pqrstuvwxyz{|}~.\n",
		"0080: 80 81 82 83 84 85 86 87 88 89 8a 8b 8c 8d 8e 8f  ................\n",
		"0090: 90 91 92 93 94 95 96 97 98 99 9a 9b 9c 9d 9e 9f  ................\n",
		"00a0: a0 a1 a2 a3 a4 a5 a6 a7 a8 a9 aa ab ac ad ae af  ................\n",
		"00b0: b0 b1 b2 b3 b4 b5 b6 b7 b8 b9 ba bb bc bd be bf  ................\n",
		"00c0: c0 c1 c2 c3 c4 c5 c6 c7 c8 c9 ca cb cc cd ce cf  ................\n",
		"00d0: d0 d1 d2 d3 d4 d5 d6 d7 d8 d9 da db dc dd de df  ................\n",
		"00e0: e0 e1 e2 e3 e4 e5 e6 e7 e8 e9 ea eb ec ed ee ef  ................\n",
		"00f0: f0 f1 f2 f3 f4 f5 f6 f7 f8 f9 fa fb fc fd fe ff  ................\n",
	);

	let mut out_buf = BufWriter::new(Vec::new());
	let written = hexxdump.hexdump_to(&mut out_buf, &bs).unwrap();
	let written_str = String::from_utf8(out_buf.buffer().to_vec()).unwrap();

	assert_eq!(expected_output.len(), written);
	assert_eq!(expected_output, written_str);
}

#[test]
fn hexdump_with_control_pictures() {
	let hexxdump = hexxdump::Hexxdump::with_config(
		hexxdump::config::DEFAULT.use_control_pictures(true)
	);
	let bs = get_rep_bytes(0x100);
	let expected_output = concat!(
		"0000: 00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f  ␀␁␂␃␄␅␆␇␈␉␊␋␌␍␎␏\n",
		"0010: 10 11 12 13 14 15 16 17 18 19 1a 1b 1c 1d 1e 1f  ␐␑␒␓␔␕␖␗␘␙␚␛␜␝␞␟\n",
		"0020: 20 21 22 23 24 25 26 27 28 29 2a 2b 2c 2d 2e 2f   !\"#$%&'()*+,-./\n",
		"0030: 30 31 32 33 34 35 36 37 38 39 3a 3b 3c 3d 3e 3f  0123456789:;<=>?\n",
		"0040: 40 41 42 43 44 45 46 47 48 49 4a 4b 4c 4d 4e 4f  @ABCDEFGHIJKLMNO\n",
		"0050: 50 51 52 53 54 55 56 57 58 59 5a 5b 5c 5d 5e 5f  PQRSTUVWXYZ[\\]^_\n",
		"0060: 60 61 62 63 64 65 66 67 68 69 6a 6b 6c 6d 6e 6f  `abcdefghijklmno\n",
		"0070: 70 71 72 73 74 75 76 77 78 79 7a 7b 7c 7d 7e 7f  pqrstuvwxyz{|}~␡\n",
		"0080: 80 81 82 83 84 85 86 87 88 89 8a 8b 8c 8d 8e 8f  ................\n",
		"0090: 90 91 92 93 94 95 96 97 98 99 9a 9b 9c 9d 9e 9f  ................\n",
		"00a0: a0 a1 a2 a3 a4 a5 a6 a7 a8 a9 aa ab ac ad ae af  ................\n",
		"00b0: b0 b1 b2 b3 b4 b5 b6 b7 b8 b9 ba bb bc bd be bf  ................\n",
		"00c0: c0 c1 c2 c3 c4 c5 c6 c7 c8 c9 ca cb cc cd ce cf  ................\n",
		"00d0: d0 d1 d2 d3 d4 d5 d6 d7 d8 d9 da db dc dd de df  ................\n",
		"00e0: e0 e1 e2 e3 e4 e5 e6 e7 e8 e9 ea eb ec ed ee ef  ................\n",
		"00f0: f0 f1 f2 f3 f4 f5 f6 f7 f8 f9 fa fb fc fd fe ff  ................\n",
	);

	let mut out_buf = BufWriter::new(Vec::new());
	let written = hexxdump.hexdump_to(&mut out_buf, &bs).unwrap();
	let written_str = String::from_utf8(out_buf.buffer().to_vec()).unwrap();
	println!("{}", written_str);

	assert_eq!(expected_output.len(), written);
	assert_eq!(expected_output, written_str);
}

#[test]
fn hexdump_with_full_unicode() {
	let hexxdump = hexxdump::Hexxdump::with_config(hexxdump::config::DEFAULT
		.use_control_pictures(true)
		.substitute_character('␦')
	);
	let bs = get_rep_bytes(0x100);
	let expected_output = concat!(
		"0000: 00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f  ␀␁␂␃␄␅␆␇␈␉␊␋␌␍␎␏\n",
		"0010: 10 11 12 13 14 15 16 17 18 19 1a 1b 1c 1d 1e 1f  ␐␑␒␓␔␕␖␗␘␙␚␛␜␝␞␟\n",
		"0020: 20 21 22 23 24 25 26 27 28 29 2a 2b 2c 2d 2e 2f   !\"#$%&'()*+,-./\n",
		"0030: 30 31 32 33 34 35 36 37 38 39 3a 3b 3c 3d 3e 3f  0123456789:;<=>?\n",
		"0040: 40 41 42 43 44 45 46 47 48 49 4a 4b 4c 4d 4e 4f  @ABCDEFGHIJKLMNO\n",
		"0050: 50 51 52 53 54 55 56 57 58 59 5a 5b 5c 5d 5e 5f  PQRSTUVWXYZ[\\]^_\n",
		"0060: 60 61 62 63 64 65 66 67 68 69 6a 6b 6c 6d 6e 6f  `abcdefghijklmno\n",
		"0070: 70 71 72 73 74 75 76 77 78 79 7a 7b 7c 7d 7e 7f  pqrstuvwxyz{|}~␡\n",
		"0080: 80 81 82 83 84 85 86 87 88 89 8a 8b 8c 8d 8e 8f  ␦␦␦␦␦␦␦␦␦␦␦␦␦␦␦␦\n",
		"0090: 90 91 92 93 94 95 96 97 98 99 9a 9b 9c 9d 9e 9f  ␦␦␦␦␦␦␦␦␦␦␦␦␦␦␦␦\n",
		"00a0: a0 a1 a2 a3 a4 a5 a6 a7 a8 a9 aa ab ac ad ae af  ␦␦␦␦␦␦␦␦␦␦␦␦␦␦␦␦\n",
		"00b0: b0 b1 b2 b3 b4 b5 b6 b7 b8 b9 ba bb bc bd be bf  ␦␦␦␦␦␦␦␦␦␦␦␦␦␦␦␦\n",
		"00c0: c0 c1 c2 c3 c4 c5 c6 c7 c8 c9 ca cb cc cd ce cf  ␦␦␦␦␦␦␦␦␦␦␦␦␦␦␦␦\n",
		"00d0: d0 d1 d2 d3 d4 d5 d6 d7 d8 d9 da db dc dd de df  ␦␦␦␦␦␦␦␦␦␦␦␦␦␦␦␦\n",
		"00e0: e0 e1 e2 e3 e4 e5 e6 e7 e8 e9 ea eb ec ed ee ef  ␦␦␦␦␦␦␦␦␦␦␦␦␦␦␦␦\n",
		"00f0: f0 f1 f2 f3 f4 f5 f6 f7 f8 f9 fa fb fc fd fe ff  ␦␦␦␦␦␦␦␦␦␦␦␦␦␦␦␦\n",
	);

	let mut out_buf = BufWriter::new(Vec::new());
	let written = hexxdump.hexdump_to(&mut out_buf, &bs).unwrap();
	let written_str = String::from_utf8(out_buf.buffer().to_vec()).unwrap();
	println!("{}", written_str);

	assert_eq!(expected_output.len(), written);
	assert_eq!(expected_output, written_str);
}