1 files changed, 123 insertions, 0 deletions
diff --git a/test/lib/test.sh b/test/lib/test.sh
new file mode 100644
index 0000000..1406a78
--- /dev/null
+++ b/test/lib/test.sh
@@ -0,0 +1,123 @@
+# Copyright (c) 2026 Egor Tensin <egor@tensin.name>
+# This file is part of the "config-links" project.
+# For details, see https://github.com/egor-tensin/config-links
+# Distributed under the MIT License.
+
+test_should_fail=
+
+src_dir_name='src'
+dest_dir_name='dest'
+alt_dest_dir_name='alt_dest'
+
+test_root_dir=
+test_src_dir=
+test_dest_dir=
+test_alt_dest_dir=
+
+test_setup() {
+    test_root_dir="$( mktemp -d )"
+    # mktemp returns /var/..., which is actually in /private/var/... on macOS.
+    test_root_dir="$( readlink -e -- "$test_root_dir" )"
+
+    test_src_dir="$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"
+
+    log "Root directory: $test_root_dir"
+    log "Shared directory: $test_src_dir"
+    log "%DEST% directory: $test_dest_dir"
+    log "%ALT_DEST% directory: $test_alt_dest_dir"
+
+    cp -r -- "$script_dir/data/$src_dir_name" "$test_src_dir"
+    cp -r -- "$script_dir/data/$dest_dir_name" "$test_dest_dir"
+    cp -r -- "$script_dir/data/$dest_dir_name" "$test_alt_dest_dir"
+}
+
+test_setup_symlink() {
+    test_setup
+
+    # Create a stupid symlink.
+    ln -s -- 'bar/3.txt' "$test_src_dir/%DEST%/3_copy.txt"
+}
+
+test_setup_dir_symlink() {
+    test_setup
+
+    # 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%"
+}
+
+test_cleanup_default() {
+    if [ -n "$test_root_dir" ]; then
+        log "Removing test's root directory: $test_root_dir"
+        rm -rf -- "$test_root_dir"
+    fi
+}
+
+test_run_script() {
+    local msg='Executing script:'
+    msg="$msg$( printf -- ' %q' "$@" --shared-dir "$test_src_dir" --database "$test_root_dir/links.bin" )"
+    log "$msg"
+
+    DEST="$test_dest_dir" ALT_DEST="$test_alt_dest_dir" "$@" \
+        --shared-dir "$test_src_dir" \
+        --database "$test_root_dir/links.bin"
+}
+
+test_run_update() {
+    test_run_script "$script_dir/../bin/links-update" "$@"
+}
+
+test_run_remove() {
+    test_run_script "$script_dir/../bin/links-remove"
+}
+
+test_run_chmod() {
+    test_run_script "$script_dir/../bin/links-chmod" "$@"
+}
+
+test_verify_output() {
+    if [ "$#" -lt 1 ] || [ "$#" -gt 2 ]; then
+        echo "usage: ${FUNCNAME[0]} DEST_DIR EXPECTED_OUTPUT" >&2
+        return 1
+    fi
+
+    local dest_dir="$1"
+    local expected_output="$2"
+
+    log "Verifying directory structure in $dest_dir..."
+
+    local actual_output
+    actual_output="$( find "$dest_dir" -printf '%h/%f->%l\n' | sort )"
+
+    if [ "$actual_output" != "$expected_output" ]; then
+        fail "The actual files do not match the expected directory structure!"
+        fail_details "Expected:\n$expected_output"
+        fail_details "Actual:\n$actual_output"
+        return 1
+    fi
+}
+
+test_verify_mode() {
+    if [ "$#" -ne 2 ]; then
+        echo "usage: ${FUNCNAME[0]} PATH EXPECTED_MODE" >&2
+        return 1
+    fi
+
+    local path="$1"
+    local expected_mode="$2"
+
+    log "Checking permissions for file: $path"
+
+    local actual_mode
+    actual_mode="$( stat -c '%a' -- "$path" )"
+    actual_mode="0$actual_mode"
+
+    if [ "$actual_mode" != "$expected_mode" ]; then
+        fail "They don't match"
+        fail_details "Expected: $expected_mode"
+        fail_details "Actual: $actual_mode"
+        return 1
+    fi
+}