Merge tag 'v1.0.1' into debian

1 files changed, 325 insertions, 0 deletions

diff --git a/test/test.sh b/test/test.sh
new file mode 100755
index 0000000..37167ec
--- /dev/null
+++ b/test/test.sh
@@ -0,0 +1,325 @@
+#!/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 ======================================================================
+    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" "$test_alt_dest_dir"
+}
+
+call_bin_script() {
+    echo
+    echo -n 'Executing script:'
+
+    printf -- ' %q' "$@" --shared-dir "$test_src_dir" --database "$test_root_dir/links.bin"
+    printf -- '\n'
+
+    echo
+    DEST="$test_dest_dir" ALT_DEST="$test_alt_dest_dir" eval "$@" --shared-dir "$test_src_dir" --database "$test_root_dir/links.bin"
+}
+
+call_update() {
+    call_bin_script "$script_dir/../links-update"
+}
+
+call_unlink() {
+    call_bin_script "$script_dir/../links-remove"
+}
+
+verify_output() {
+    if [ "$#" -lt 1 ] || [ "$#" -gt 2 ]; then
+        echo "usage: ${FUNCNAME[0]} EXPECTED_OUTPUT [DEST_DIR]" >&2
+        return 1
+    fi
+
+    local expected_output="$1"
+    echo
+    echo 'Expected directory structure:'
+    echo "$expected_output"
+
+    local dest_dir="$test_dest_dir"
+    [ "$#" -ge 2 ] && dest_dir="$2"
+
+    actual_output="$( find "$dest_dir" -printf '%h/%f->%l\n' | sort )"
+    echo
+    echo 'Actual directory structure:'
+    echo "$actual_output"
+    echo
+
+    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
+    call_update
+
+    local expected_output="$test_dest_dir->
+$test_dest_dir/1.txt->$test_src_dir/%DEST%/1.txt
+$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->$test_src_dir/%DEST%/bar/baz/4.txt
+$test_dest_dir/foo->
+$test_dest_dir/foo/2.txt->$test_src_dir/%DEST%/foo/2.txt"
+
+    verify_output "$expected_output"
+}
+
+test_unlink_works() {
+    # Basic test to make sure unlink.sh actually removes the created symlinks.
+
+    new_test
+    call_update
+    call_unlink
+
+    local expected_output="$test_dest_dir->"
+    verify_output "$expected_output"
+}
+
+test_unlink_does_not_overwrite_files() {
+    # Check that if a user overwrites a symlink with his own file, unlink.sh
+    # keeps it.
+
+    new_test
+    call_update
+
+    # Simulate a user overwriting one of the symlinks with his own file.
+    rm -- "$test_dest_dir/bar/3.txt"
+    echo 'User content' > "$test_dest_dir/bar/3.txt"
+
+    call_unlink
+
+    # 3.txt must be kept:
+    local expected_output="$test_dest_dir->
+$test_dest_dir/bar->
+$test_dest_dir/bar/3.txt->"
+
+    verify_output "$expected_output"
+}
+
+test_dir_symlink_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%"
+
+    call_update
+
+    local expected_output="$test_dest_dir->
+$test_dest_dir/1.txt->$test_src_dir/%DEST%/1.txt
+$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->$test_src_dir/%DEST%/bar/baz/4.txt
+$test_dest_dir/foo->
+$test_dest_dir/foo/2.txt->$test_src_dir/%DEST%/foo/2.txt"
+
+    verify_output "$expected_output"
+
+    expected_output="$test_alt_dest_dir->
+$test_alt_dest_dir/1.txt->$test_src_dir/%ALT_DEST%/1.txt
+$test_alt_dest_dir/bar->
+$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
+$test_alt_dest_dir/foo->
+$test_alt_dest_dir/foo/2.txt->$test_src_dir/%ALT_DEST%/foo/2.txt"
+
+    verify_output "$expected_output" "$test_alt_dest_dir"
+}
+
+test_dir_symlink_unlink_works() {
+    # Test that unlink.sh works for directory 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%"
+
+    call_update
+    call_unlink
+
+    local expected_output="$test_dest_dir->"
+    verify_output "$expected_output"
+
+    expected_output="$test_alt_dest_dir->"
+    verify_output "$expected_output" "$test_alt_dest_dir"
+}
+
+test_dir_symlink_remove_shared_file() {
+    # If we remove a shared file, both of the symlinks should be removed.
+
+    new_test
+    ln -s -- '%DEST%' "$test_src_dir/%ALT_DEST%"
+    call_update
+    # Remove a random shared file:
+    rm -- "$test_src_dir/%DEST%/bar/3.txt"
+    call_update
+
+    local expected_output="$test_dest_dir->
+$test_dest_dir/1.txt->$test_src_dir/%DEST%/1.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
+$test_dest_dir/foo->
+$test_dest_dir/foo/2.txt->$test_src_dir/%DEST%/foo/2.txt"
+
+    verify_output "$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/bar->
+$test_alt_dest_dir/bar/baz->
+$test_alt_dest_dir/bar/baz/4.txt->$test_src_dir/%ALT_DEST%/bar/baz/4.txt
+$test_alt_dest_dir/foo->
+$test_alt_dest_dir/foo/2.txt->$test_src_dir/%ALT_DEST%/foo/2.txt"
+
+    verify_output "$expected_output" "$test_alt_dest_dir"
+}
+
+test_dir_symlink_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%' "$test_src_dir/%ALT_DEST%"
+    call_update
+    # Remove the directory symlink:
+    rm -- "$test_src_dir/%ALT_DEST%"
+    call_update
+
+    local expected_output="$test_dest_dir->
+$test_dest_dir/1.txt->$test_src_dir/%DEST%/1.txt
+$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->$test_src_dir/%DEST%/bar/baz/4.txt
+$test_dest_dir/foo->
+$test_dest_dir/foo/2.txt->$test_src_dir/%DEST%/foo/2.txt"
+
+    verify_output "$expected_output"
+
+    expected_output="$test_alt_dest_dir->"
+    verify_output "$expected_output" "$test_alt_dest_dir"
+}
+
+test_symlink_update_works() {
+    # Shared files can also be symlinks, pointing to something else.
+
+    new_test
+    # Create a stupid symlink.
+    ln -s -- 'bar/3.txt' "$test_src_dir/%DEST%/3_copy.txt"
+    call_update
+
+    local expected_output="$test_dest_dir->
+$test_dest_dir/1.txt->$test_src_dir/%DEST%/1.txt
+$test_dest_dir/3_copy.txt->$test_src_dir/%DEST%/3_copy.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
+$test_dest_dir/foo->
+$test_dest_dir/foo/2.txt->$test_src_dir/%DEST%/foo/2.txt"
+
+    verify_output "$expected_output"
+
+    echo
+    echo 'Verifying 3_copy.txt (the symlink) is valid...'
+
+    local copy_target
+    copy_target="$( readlink -- "$test_dest_dir/3_copy.txt" )"
+    test "$copy_target" = "$test_src_dir/%DEST%/3_copy.txt"
+
+    local copy_content
+    copy_content="$( cat -- "$test_dest_dir/3_copy.txt" )"
+    test "$copy_content" = '3'
+}
+
+test_symlink_unlink_works() {
+    new_test
+    # Create a stupid symlink.
+    ln -s -- 'bar/3.txt' "$test_src_dir/%DEST%/3_copy.txt"
+    call_update
+    call_unlink
+
+    local expected_output="$test_dest_dir->"
+    verify_output "$expected_output"
+
+    echo
+    echo 'Verifying 3_copy.txt (the shared file) is valid...'
+
+    local copy_target
+    copy_target="$( readlink -e -- "$test_src_dir/%DEST%/3_copy.txt" )"
+    test "$copy_target" = "$test_src_dir/%DEST%/bar/3.txt"
+
+    local copy_content
+    copy_content="$( cat -- "$test_src_dir/%DEST%/3_copy.txt" )"
+    test "$copy_content" = '3'
+}
+
+main() {
+    test_update_works
+    test_unlink_works
+    test_unlink_does_not_overwrite_files
+
+    test_dir_symlink_update_works
+    test_dir_symlink_unlink_works
+    test_dir_symlink_remove_shared_file
+    test_dir_symlink_remove_dir_symlink
+
+    test_symlink_update_works
+    test_symlink_unlink_works
+}
+
+main