test(06-01): create test infrastructure for Lab 05 Database & RDS

Test Scripts (7 files, 1000+ lines):
- 01-database-creation-test.sh: PostgreSQL creation and initialization
- 02-private-network-test.sh: Private network isolation (INF-02)
- 03-persistence-test.sh: Data persistence verification (INF-04)
- 04-security-test.sh: Security compliance (INF-01, INF-02, INF-03)
- 99-final-verification.sh: End-to-end student verification
- run-all-tests.sh: Test orchestration with fail-fast
- quick-test.sh: Quick validation (< 30s)

Tests verify:
- PostgreSQL in private network → RDS in VPC
- Named volume → EBS volume
- Resource limits → DB instance class
- All INF requirements (01-04)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

labs/lab-05-database/tests/run-all-tests.sh

@@ -0,0 +1,93 @@
+#!/bin/bash
+# Lab 05 - Database & RDS
+# Test Orchestration Script
+# Esegue tutti i test con fail-fast behavior
+
+set -euo pipefail
+
+# Colori per output
+RED='\033[0;31m'
+GREEN='\033[0;32m'
+YELLOW='\033[1;33m'
+BLUE='\033[0;34m'
+NC='\033[0m'
+
+# Directory corrente
+TEST_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+cd "$TEST_DIR"
+
+# Contatori globali
+global_pass=0
+global_fail=0
+global_skip=0
+
+# Funzioni helper
+inc_global_pass() { ((global_pass++)) || true; }
+inc_global_fail() { ((global_fail++)) || true; }
+inc_global_skip() { ((global_skip++)) || true; }
+
+echo "=========================================="
+echo "Lab 05 - Test Suite Orchestration"
+echo "=========================================="
+echo ""
+
+# Array dei test da eseguire
+declare -a tests=(
+    "$TEST_DIR/01-database-creation-test.sh"
+    "$TEST_DIR/02-private-network-test.sh"
+    "$TEST_DIR/03-persistence-test.sh"
+    "$TEST_DIR/04-security-test.sh"
+    "$TEST_DIR/99-final-verification.sh"
+)
+
+# Esegui tutti i test
+for test_script in "${tests[@]}"; do
+    test_name=$(basename "$test_script")
+
+    echo -e "${BLUE}Eseguendo: $test_name${NC}"
+    echo "----------------------------------------"
+
+    if [ ! -f "$test_script" ]; then
+        echo -e "${RED}ERRORE: Test non trovato: $test_script${NC}"
+        inc_global_fail
+        continue
+    fi
+
+    # Rendi eseguibile
+    chmod +x "$test_script"
+
+    # Esegui il test e cattura l'exit code
+    if bash "$test_script"; then
+        test_result=$?
+        echo -e "${GREEN}✓ $test_name PASS${NC}"
+        echo ""
+    else
+        test_result=$?
+        echo -e "${RED}✗ $test_name FAIL${NC}"
+        echo ""
+
+        # Fail-fast: esci al primo test fallito
+        echo -e "${RED}FAIL-FAST: Interrompo esecuzione per errore critico${NC}"
+        inc_global_fail
+        break
+    fi
+done
+
+echo "=========================================="
+echo "RIEPILOGO COMPLETO"
+echo "=========================================="
+echo "Test PASS: $global_pass"
+echo "Test FAIL: $global_fail"
+echo "Test SKIP: $global_skip"
+echo "=========================================="
+
+if [ $global_fail -gt 0 ]; then
+    echo ""
+    echo -e "${RED}✗ TEST SUITE FALLITA${NC}"
+    echo "Risolvere gli errori e ripetere"
+    exit 1
+else
+    echo ""
+    echo -e "${GREEN}✓ TEST SUITE COMPLETATA CON SUCCESSO${NC}"
+    exit 0
+fi