test

#!/usr/bin/env sh

# All recipes must have a test.
# Support for spaces and other special characters should be tested.

oneTimeSetUp() {
  undo="$PWD/undo -p"
  mkdir "$SHUNIT_TMPDIR/dir"
  for file in a b "c d"; do
    touch "$SHUNIT_TMPDIR/$file"
  done
}

assertIsReverse() {
  while read -r line; do
    command="${line%%->*}"
    reverse="${line##*-> }"
    ret="$(eval "$undo" "$command")"
    ret="${ret%% }" # We don't care about trailing spaces
    assertEquals "command: $command" "$reverse" "$ret"
  done
}

test_mv() {
  cd "$SHUNIT_TMPDIR"
  assertIsReverse <<EOS
    mv a b         -> mv b a
    mv a "c d"     -> mv c\\ d a
    mv a b dir     -> mv dir/a ./; mv dir/b ./;
    mv /a /b dir   -> mv dir/a /; mv dir/b /;
    mv /a/ /b/ dir -> mv dir/a /; mv dir/b /;
    mv dir0 dir    -> mv dir dir0
    mv 'dir 0' dir -> mv dir dir\\ 0
EOS
}

test_cp() {
  cd "$SHUNIT_TMPDIR"
  assertIsReverse <<EOS
    cp a b         -> rm b
    cp "c d" a     -> rm a
    cp b 'c d'     -> rm c\\ d
    cp a b dir     -> rm dir/a; rm dir/b;
    cp /a /b dir   -> rm dir/a; rm dir/b;
    cp /a/ /b/ dir -> rm dir/a; rm dir/b;
    cp -r dir0 dir -> rm -r dir
EOS
}

test_mkdir() {
  cd "$SHUNIT_TMPDIR"
  assertIsReverse <<EOS
    mkdir dir2    -> rmdir dir2
    mkdir "d i r" -> rmdir d\\ i\\ r
    mkdir a b c   -> rmdir a b c
EOS
}

test_rmdir() {
  cd "$SHUNIT_TMPDIR"
  assertIsReverse <<EOS
    rmdir dir        -> mkdir dir
    rmdir "d i r"    -> mkdir d\\ i\\ r
    rmdir a b c      -> mkdir a b c
    rmdir -p dir/a/b -> mkdir -p dir/a/b
EOS
}

test_tar() {
  assertIsReverse <<EOS
    tar xzvf file -> tar tzf file | xargs rm 2>/dev/null; \
tar tzf file | tac | xargs rmdir 2>/dev/null;
EOS
}

test_gzip() {
  assertIsReverse <<EOS
    gzip 'file a'          -> gunzip file\\ a.gz
    gzip 'file a' 'file b' -> gunzip file\\ a.gz file\\ b.gz
EOS
}

test_gunzip() {
  assertIsReverse <<EOS
    gunzip 'file a.gz'             -> gzip file\\ a
    gunzip 'file a.gz' 'file b.gz' -> gzip file\\ a file\\ b
EOS
}

test_git() {
  assertIsReverse <<EOS
    git add 'file a' -> git reset HEAD -- file\\ a
EOS
}

[ -n "$ZSH_VERSION" ] && SHUNIT_PARENT=$0 && setopt shwordsplit
. ./shunit2