tests/losetup.test

#!/bin/bash

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

if [ "$(id -u)" -ne 0 ]
then
  echo "SKIPPED: losetup (not root)"
  continue 2>/dev/null
  exit
fi

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

truncate -s 1M blah.img &&
FILE="$(readlink -f blah.img)"
DEV="$(printf '%04d' $(stat -t blah.img | awk '{print $7}'))"
NODE="$(awk '{print $7}')"

losetup -f 
losetup -f -s
losetup -f file
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" "" ""

testing "cat file1" \
        "cat /proc/self/exe > file1 && cmp /proc/self/exe 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"

losetup -d

rm blah.img