Add SSH remote backup support, new commands, and test suite

  - Add remote mode for SSH-based backups to servers like TrueNAS
  - Add SSH_IDENTITY_FILE config for non-root SSH keys
  - Add new commands: backup, status, list, dryrun
  - Add dependency checks for rsync, ssh, flock
  - Add timestamped logging
  - Fix: duplicate cron jobs on repeated setup
  - Fix: use mktemp for temp files
  - Fix: use portable sed instead of grep -oP
  - Fix: strengthen input validation with regex anchors
  - Fix: handle paths with spaces (newline-separated includes)
  - Change license from MIT to GPL v3
  - Add automated test suite (25 tests)
  - Update README with new features and testing docs

1 files changed, 120 insertions, 0 deletions

diff --git a/tests/test_rsyncshot.sh b/tests/test_rsyncshot.sh
new file mode 100755
index 0000000..15f2a99
--- /dev/null
+++ b/tests/test_rsyncshot.sh
@@ -0,0 +1,120 @@
+#!/usr/bin/env bash
+# ==============================================================================
+# rsyncshot Test Suite
+# ==============================================================================
+#
+# Runs all automated tests for rsyncshot.
+#
+# Usage:
+#   sudo ./tests/test_rsyncshot.sh           # Run all tests
+#   sudo ./tests/test_rsyncshot.sh -v        # Verbose output
+#   sudo ./tests/test_rsyncshot.sh --quick   # Skip slow tests
+#
+# ==============================================================================
+
+set -e
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+VERBOSE=false
+QUICK=false
+
+# Parse arguments
+while [[ $# -gt 0 ]]; do
+    case $1 in
+        -v|--verbose)
+            VERBOSE=true
+            shift
+            ;;
+        -q|--quick)
+            QUICK=true
+            shift
+            ;;
+        -h|--help)
+            echo "Usage: $0 [-v|--verbose] [-q|--quick]"
+            echo ""
+            echo "Options:"
+            echo "  -v, --verbose  Show detailed test output"
+            echo "  -q, --quick    Skip slow tests (backup/rotation)"
+            exit 0
+            ;;
+        *)
+            echo "Unknown option: $1"
+            exit 1
+            ;;
+    esac
+done
+
+# Check for root
+if [ "$EUID" -ne 0 ]; then
+    echo "Tests must be run as root (sudo ./tests/test_rsyncshot.sh)"
+    exit 1
+fi
+
+# Source test helpers
+source "$SCRIPT_DIR/lib/test_helpers.sh"
+
+echo "============================================================"
+echo "rsyncshot Test Suite"
+echo "============================================================"
+echo ""
+echo "Script: $(cd "$SCRIPT_DIR/.." && pwd)/rsyncshot"
+echo "Date:   $(date)"
+echo ""
+
+# Track overall results
+TOTAL_RUN=0
+TOTAL_PASSED=0
+TOTAL_FAILED=0
+
+# Run a test file and accumulate results
+run_test_file() {
+    local test_file="$1"
+    local test_name="$2"
+
+    # Reset counters before sourcing
+    TESTS_RUN=0
+    TESTS_PASSED=0
+    TESTS_FAILED=0
+
+    # Source and run the test file
+    source "$test_file"
+
+    # Call the run function
+    "run_${test_name}_tests"
+
+    # Accumulate totals
+    TOTAL_RUN=$((TOTAL_RUN + TESTS_RUN))
+    TOTAL_PASSED=$((TOTAL_PASSED + TESTS_PASSED))
+    TOTAL_FAILED=$((TOTAL_FAILED + TESTS_FAILED))
+}
+
+# Run test suites
+run_test_file "$SCRIPT_DIR/cases/test_validation.sh" "validation"
+run_test_file "$SCRIPT_DIR/cases/test_includes.sh" "includes"
+run_test_file "$SCRIPT_DIR/cases/test_dryrun.sh" "dryrun"
+
+if [ "$QUICK" = false ]; then
+    run_test_file "$SCRIPT_DIR/cases/test_backup.sh" "backup"
+    run_test_file "$SCRIPT_DIR/cases/test_cron.sh" "cron"
+else
+    echo ""
+    echo "Skipping slow tests (backup, cron) - use without --quick to run all"
+fi
+
+# Print final summary
+echo ""
+echo "============================================================"
+echo "Final Summary"
+echo "============================================================"
+echo -e "Total:  $TOTAL_RUN"
+echo -e "Passed: ${GREEN}$TOTAL_PASSED${NC}"
+echo -e "Failed: ${RED}$TOTAL_FAILED${NC}"
+echo ""
+
+if [ "$TOTAL_FAILED" -eq 0 ]; then
+    echo -e "${GREEN}All tests passed!${NC}"
+    exit 0
+else
+    echo -e "${RED}Some tests failed.${NC}"
+    exit 1
+fi