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#!/usr/bin/env bash
set -o errexit -o nounset -o pipefail
script_dir="$( dirname -- "${BASH_SOURCE[0]}" )"
script_dir="$( cd -- "$script_dir" && pwd )"
readonly script_dir
script_name="$( basename -- "${BASH_SOURCE[0]}" )"
readonly script_name
readonly src_dir_name='src'
readonly dest_dir_name='dest'
readonly alt_dest_dir_name='alt_dest'
src_dir_path="$script_dir/$src_dir_name"
readonly src_dir_path
dest_dir_path="$script_dir/$dest_dir_name"
readonly dest_dir_path
test_root_dir=
test_src_dir=
test_dest_dir=
test_alt_dest_dir=
new_test() {
local test_name=
[ "${#FUNCNAME[@]}" -gt 1 ] && test_name="${FUNCNAME[1]}"
echo
echo "New test: $test_name"
test_root_dir="$( mktemp --directory )"
test_src_dir="$test_root_dir/$src_dir_name"
test_dest_dir="$test_root_dir/$dest_dir_name"
test_alt_dest_dir="$test_root_dir/$alt_dest_dir_name"
echo "Root directory: $test_root_dir"
echo "Shared directory: $test_src_dir"
echo "%DEST% directory: $test_dest_dir"
echo "%ALT_DEST% directory: $test_alt_dest_dir"
echo
cp -r -- "$src_dir_path" "$test_src_dir"
cp -r -- "$dest_dir_path" "$test_dest_dir"
cp -r -- "$dest_dir_path" "$test_alt_dest_dir"
}
verify_output() {
if [ "$#" -lt 1 ] || [ "$#" -gt 2 ]; then
echo "usage: ${FUNCNAME[0]} EXPECTED_OUTPUT [DEST_DIR]" >&2
return 1
fi
local expected_output="$1"
echo 'Expected directory structure:'
echo "$expected_output"
local dest_dir="$test_dest_dir"
[ "$#" -ge 2 ] && dest_dir="$2"
actual_output="$( find "$dest_dir" -printf '%h/%f->%l\n' )"
echo 'Actual directory structure:'
echo "$actual_output"
if [ "$actual_output" = "$expected_output" ]; then
echo "They match!"
else
echo "The actual directory structure does not match the expected directory structure!" >&2
return 1
fi
}
test_update_works() {
# Basic test to make sure update.sh actually creates the proper symlinks.
new_test
DEST="$test_dest_dir" "$script_dir/../bin/update.sh" --shared-dir "$test_src_dir"
local expected_output="$test_dest_dir->
$test_dest_dir/1.txt->$test_src_dir/%DEST%/1.txt
$test_dest_dir/foo->
$test_dest_dir/foo/2.txt->$test_src_dir/%DEST%/foo/2.txt
$test_dest_dir/bar->
$test_dest_dir/bar/3.txt->$test_src_dir/%DEST%/bar/3.txt
$test_dest_dir/bar/baz->
$test_dest_dir/bar/baz/4.txt->$test_src_dir/%DEST%/bar/baz/4.txt"
verify_output "$expected_output"
}
test_unlink_works() {
# Basic test to make sure unlink.sh actually removes the created symlinks.
new_test
DEST="$test_dest_dir" "$script_dir/../bin/update.sh" --shared-dir "$test_src_dir"
DEST="$test_dest_dir" "$script_dir/../bin/unlink.sh" --shared-dir "$test_src_dir"
local expected_output="$test_dest_dir->"
verify_output "$expected_output"
}
test_unlink_does_not_overwrite_files() {
# Check that if a user overwrites a symlink with his own file, unlink.sh
# keeps it.
new_test
DEST="$test_dest_dir" "$script_dir/../bin/update.sh" --shared-dir "$test_src_dir"
# Simulate a user overwriting one of the symlinks with his own file.
rm -- "$test_dest_dir/bar/3.txt"
echo 'User content' > "$test_dest_dir/bar/3.txt"
DEST="$test_dest_dir" "$script_dir/../bin/unlink.sh" --shared-dir "$test_src_dir"
# 3.txt must be kept:
local expected_output="$test_dest_dir->
$test_dest_dir/bar->
$test_dest_dir/bar/3.txt->"
verify_output "$expected_output"
}
test_symlinks_update_works() {
# We can symlink files to multiple directories by creating symlinks inside
# --shared-dir.
new_test
# Files will get symlinks in the directory pointed to by $DEST, as well as
# by $ALT_DEST.
ln -s -- '%DEST%' "$test_src_dir/%ALT_DEST%"
DEST="$test_dest_dir" ALT_DEST="$test_alt_dest_dir" "$script_dir/../bin/update.sh" --shared-dir "$test_src_dir"
local expected_output
expected_output="$test_dest_dir->
$test_dest_dir/1.txt->$test_src_dir/%DEST%/1.txt
$test_dest_dir/foo->
$test_dest_dir/foo/2.txt->$test_src_dir/%DEST%/foo/2.txt
$test_dest_dir/bar->
$test_dest_dir/bar/3.txt->$test_src_dir/%DEST%/bar/3.txt
$test_dest_dir/bar/baz->
$test_dest_dir/bar/baz/4.txt->$test_src_dir/%DEST%/bar/baz/4.txt"
verify_output "$expected_output"
expected_output="$test_alt_dest_dir->
$test_alt_dest_dir/1.txt->$test_src_dir/%ALT_DEST%/1.txt
$test_alt_dest_dir/foo->
$test_alt_dest_dir/foo/2.txt->$test_src_dir/%ALT_DEST%/foo/2.txt
$test_alt_dest_dir/bar->
$test_alt_dest_dir/bar/3.txt->$test_src_dir/%ALT_DEST%/bar/3.txt
$test_alt_dest_dir/bar/baz->
$test_alt_dest_dir/bar/baz/4.txt->$test_src_dir/%ALT_DEST%/bar/baz/4.txt"
verify_output "$expected_output" "$test_alt_dest_dir"
}
test_symlinks_unlink_works() {
# Test that unlink.sh works for symlinked directories inside --shared-dir.
new_test
# Files will get symlinks in the directory pointed to by $DEST, as well as
# by $ALT_DEST.
ln -s -- '%DEST%' "$test_src_dir/%ALT_DEST%"
DEST="$test_dest_dir" ALT_DEST="$test_alt_dest_dir" "$script_dir/../bin/update.sh" --shared-dir "$test_src_dir"
DEST="$test_dest_dir" ALT_DEST="$test_alt_dest_dir" "$script_dir/../bin/unlink.sh" --shared-dir "$test_src_dir"
local expected_output
expected_output="$test_dest_dir->"
verify_output "$expected_output"
expected_output="$test_alt_dest_dir->"
verify_output "$expected_output" "$test_alt_dest_dir"
}
test_symlinks_remove_shared_file() {
# If we remove a shared file, both of the symlinks should be removed.
new_test
ln -s -- '%DEST%' "$test_src_dir/%ALT_DEST%"
DEST="$test_dest_dir" ALT_DEST="$test_alt_dest_dir" "$script_dir/../bin/update.sh" --shared-dir "$test_src_dir"
# Remove a random shared file:
rm -- "$test_src_dir/%DEST%/bar/3.txt"
DEST="$test_dest_dir" ALT_DEST="$test_alt_dest_dir" "$script_dir/../bin/update.sh" --shared-dir "$test_src_dir"
local expected_output
expected_output="$test_dest_dir->
$test_dest_dir/1.txt->$test_src_dir/%DEST%/1.txt
$test_dest_dir/foo->
$test_dest_dir/foo/2.txt->$test_src_dir/%DEST%/foo/2.txt
$test_dest_dir/bar->
$test_dest_dir/bar/baz->
$test_dest_dir/bar/baz/4.txt->$test_src_dir/%DEST%/bar/baz/4.txt"
verify_output "$expected_output"
expected_output="$test_alt_dest_dir->
$test_alt_dest_dir/1.txt->$test_src_dir/%ALT_DEST%/1.txt
$test_alt_dest_dir/foo->
$test_alt_dest_dir/foo/2.txt->$test_src_dir/%ALT_DEST%/foo/2.txt
$test_alt_dest_dir/bar->
$test_alt_dest_dir/bar/baz->
$test_alt_dest_dir/bar/baz/4.txt->$test_src_dir/%ALT_DEST%/bar/baz/4.txt"
verify_output "$expected_output" "$test_alt_dest_dir"
}
test_symlinks_remove_dir_symlink() {
# If we remove a directory symlink in --shared-dir, all the symlinks
# accessible through this directory symlink should be removed.
new_test
ln -s -- '%DEST%' "$test_src_dir/%ALT_DEST%"
DEST="$test_dest_dir" ALT_DEST="$test_alt_dest_dir" "$script_dir/../bin/update.sh" --shared-dir "$test_src_dir"
# Remove the directory symlink:
rm -- "$test_src_dir/%ALT_DEST%"
DEST="$test_dest_dir" ALT_DEST="$test_alt_dest_dir" "$script_dir/../bin/update.sh" --shared-dir "$test_src_dir"
local expected_output
expected_output="$test_dest_dir->
$test_dest_dir/1.txt->$test_src_dir/%DEST%/1.txt
$test_dest_dir/foo->
$test_dest_dir/foo/2.txt->$test_src_dir/%DEST%/foo/2.txt
$test_dest_dir/bar->
$test_dest_dir/bar/3.txt->$test_src_dir/%DEST%/bar/3.txt
$test_dest_dir/bar/baz->
$test_dest_dir/bar/baz/4.txt->$test_src_dir/%DEST%/bar/baz/4.txt"
verify_output "$expected_output"
expected_output="$test_alt_dest_dir->"
verify_output "$expected_output" "$test_alt_dest_dir"
}
main() {
test_update_works
test_unlink_works
test_unlink_does_not_overwrite_files
test_symlinks_update_works
test_symlinks_unlink_works
test_symlinks_remove_shared_file
test_symlinks_remove_dir_symlink
}
main
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