#!/bin/bash

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

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

echo "one" > file1
echo "two" > file2
testing "cat" "cat && echo yes" "oneyes\n" "" "one"
testing "cat -" "cat - && echo yes" "oneyes\n" "" "one"
testing "cat file1 file2" "cat file1 file2" "one\ntwo\n"  "" ""
testing "cat - file"      "cat - file1"     "zero\none\n" "" "zero\n"
testing "cat file -"      "cat file1 -"     "one\nzero\n" "" "zero\n"

testing "cat file1 notfound file2" \
        "cat file1 notfound file2 2>stderr && echo ok ; cat stderr; rm stderr" \
        "one\ntwo\ncat: notfound: No such file or directory\n" "" ""

FILE="$(readlink -f /proc/self/exe)"
testing "cat file1" \
        'cat "$FILE" > file1 && cmp "$FILE" file1 && echo yes' \
        "yes\n" "" ""

testing "cat - file1" \
        "cat - file1 | diff -a -U 0 - file1 | tail -n 1" \
        "-hello\n" "" "hello\n"

testing "cat > /dev/full" \
        "cat - > /dev/full 2>stderr && echo ok; cat stderr; rm stderr" \
        "cat: xwrite: No space left on device\n" "" "zero\n"

rm file1 file2