#!/bin/bash

[ -f testing.sh ] && . testing.sh

#testing "name" "command" "result" "infile" "stdin"

echo "this is some text" > file1
echo -n > file2

# Note that the xxd in vim-common on Ubuntu 14 uses %07x for the file offset.

testing "xxd file1" "xxd file1" \
    "00000000: 7468 6973 2069 7320 736f 6d65 2074 6578  this is some tex\n00000010: 740a                                     t.\n" \
    "" ""
testing "xxd file1 -l" "xxd -l 2 file1" \
    "00000000: 7468                                     th\n" \
    "" ""
testing "xxd file2" "xxd file2" "" "" ""
testing "xxd -" "xxd -" \
    "00000000: 6865 6c6c 6f                             hello\n" "" "hello"
testing "xxd" "xxd" \
    "00000000: 776f 726c 64                             world\n" "" "world"
testing "xxd -c 8 -g 4 file1" "xxd -c 8 -g 4 file1" \
    "00000000: 74686973 20697320  this is \n00000008: 736f6d65 20746578  some tex\n00000010: 740a               t.\n" "" ""
testing "xxd -c 8 -g 3 file1" "xxd -c 8 -g 3 file1" \
    "00000000: 746869 732069 7320 this is \n00000008: 736f6d 652074 6578 some tex\n00000010: 740a               t.\n" "" ""

testing "xxd -p" "xxd -p file1" "7468697320697320736f6d6520746578740a\n" "" ""

testing "xxd -r" "xxd file1 | xxd -r" "this is some text\n" "" ""
testing "xxd -r -p" "xxd -p file1 | xxd -r -p" "this is some text\n" "" ""

testing "xxd -r garbage" "echo '0000: 68 65 6c6c 6fxxxx' | xxd -r -" "hello" "" ""

# -r will only read -c bytes (default 16) before skipping to the next line,
# ignoring the rest.
testing "xxd -r long" \
    "echo '0000: 40404040404040404040404040404040404040404040404040404040404040404040404040404040' | xxd -r -" \
    "@@@@@@@@@@@@@@@@" "" ""

# -r -p ignores the usual -p 30-byte/line limit (or any limit set by -c) and
# will take as many bytes as you give it.
testing "xxd -r -p long" \
    "echo '40404040404040404040404040404040404040404040404040404040404040404040404040404040' | xxd -r -p -" \
    "@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@" "" ""

rm file1 file2