add unit tests

saveload fixes

run_tests.sh

@@ -0,0 +1,122 @@
+#!/usr/bin/env bash
+
+echo "Automated Test Suite Runner"
+echo "==========================="
+echo ""
+echo "Scanning for test files in tests/ directory..."
+
+# Function to run a single test file
+run_test() {
+    local test_file="$1"
+    local test_name="$2"
+
+    echo ""
+    echo "=== $test_name ==="
+    echo "Running: $test_file"
+
+    if godot --headless --script "$test_file"; then
+        echo "✅ PASSED: $test_name"
+    else
+        echo "❌ FAILED: $test_name"
+        ((failed_tests++))
+    fi
+
+    ((total_tests++))
+    echo ""
+}
+
+# Initialize counters
+total_tests=0
+failed_tests=0
+start_time=$(date +%s)
+
+# Find and run all test files
+echo "Discovered test files:"
+
+# Core test files in tests/ directory
+for test_file in tests/test_*.gd; do
+    if [ -f "$test_file" ]; then
+        # Extract descriptive name from filename
+        filename=$(basename "$test_file" .gd)
+        test_name=$(echo "$filename" | sed 's/test_//' | sed 's/_/ /g' | sed 's/\b\w/\U&/g')
+
+        echo "  📄 $test_file -> $test_name"
+    fi
+done
+
+# Additional test directories
+if [ -d "tests/unit" ]; then
+    for test_file in tests/unit/test_*.gd; do
+        if [ -f "$test_file" ]; then
+            filename=$(basename "$test_file" .gd)
+            test_name="Unit: $(echo "$filename" | sed 's/test_//' | sed 's/_/ /g' | sed 's/\b\w/\U&/g')"
+            echo "  📄 $test_file -> $test_name"
+        fi
+    done
+fi
+
+if [ -d "tests/integration" ]; then
+    for test_file in tests/integration/test_*.gd; do
+        if [ -f "$test_file" ]; then
+            filename=$(basename "$test_file" .gd)
+            test_name="Integration: $(echo "$filename" | sed 's/test_//' | sed 's/_/ /g' | sed 's/\b\w/\U&/g')"
+            echo "  📄 $test_file -> $test_name"
+        fi
+    done
+fi
+
+echo ""
+echo "Starting test execution..."
+echo ""
+
+# Run core tests
+for test_file in tests/test_*.gd; do
+    if [ -f "$test_file" ]; then
+        filename=$(basename "$test_file" .gd)
+        test_name=$(echo "$filename" | sed 's/test_//' | sed 's/_/ /g' | sed 's/\b\w/\U&/g')
+        run_test "$test_file" "$test_name"
+    fi
+done
+
+# Run unit tests
+if [ -d "tests/unit" ]; then
+    for test_file in tests/unit/test_*.gd; do
+        if [ -f "$test_file" ]; then
+            filename=$(basename "$test_file" .gd)
+            test_name="Unit: $(echo "$filename" | sed 's/test_//' | sed 's/_/ /g' | sed 's/\b\w/\U&/g')"
+            run_test "$test_file" "$test_name"
+        fi
+    done
+fi
+
+# Run integration tests
+if [ -d "tests/integration" ]; then
+    for test_file in tests/integration/test_*.gd; do
+        if [ -f "$test_file" ]; then
+            filename=$(basename "$test_file" .gd)
+            test_name="Integration: $(echo "$filename" | sed 's/test_//' | sed 's/_/ /g' | sed 's/\b\w/\U&/g')"
+            run_test "$test_file" "$test_name"
+        fi
+    done
+fi
+
+# Calculate execution time
+end_time=$(date +%s)
+execution_time=$((end_time - start_time))
+
+# Print summary
+echo "================================"
+echo "📊 Test Execution Summary"
+echo "================================"
+echo "Total Tests Run: $total_tests"
+echo "Tests Passed: $((total_tests - failed_tests))"
+echo "Tests Failed: $failed_tests"
+echo "Execution Time: ${execution_time}s"
+
+if [ $failed_tests -eq 0 ]; then
+    echo "✅ ALL TESTS PASSED!"
+    exit 0
+else
+    echo "❌ $failed_tests TEST(S) FAILED"
+    exit 1
+fi