Add TestPyPI validation script

New script: tests/test_testpypi.sh
- Tests published version from TestPyPI (not local code)
- Takes version as argument: ./tests/test_testpypi.sh 0.1.0
- Creates clean venv and installs from TestPyPI
- Runs 4 validation tests:
  1. Import backend classes
  2. Check sigma-cli integration
  3. Convert test Sigma rule
  4. Validate JSON output structure
- Auto cleanup on exit

Usage:
  ./tests/test_testpypi.sh 0.1.0

This validates TestPyPI release before promoting to production PyPI.

Author: dineshmeka701557

tests/test_testpypi.sh

@@ -0,0 +1,160 @@
+#!/bin/bash
+# Test script for TestPyPI published version
+# This tests the package published to TestPyPI, not local code
+set -e
+
+echo "=========================================="
+echo "Testing pySigma-backend-sumologic from TestPyPI"
+echo "=========================================="
+echo ""
+
+# Check if version argument provided
+if [ -z "$1" ]; then
+    echo "Usage: $0 <version>"
+    echo "Example: $0 0.1.0"
+    echo ""
+    echo "This will test version 0.1.0 from TestPyPI"
+    exit 1
+fi
+
+VERSION="$1"
+
+echo "Version to test: $VERSION"
+echo ""
+
+# Create temp directory and venv
+TEMP_DIR=$(mktemp -d)
+cd "$TEMP_DIR"
+
+echo "📁 Created test environment: $TEMP_DIR"
+echo ""
+
+# Cleanup function
+cleanup() {
+    echo ""
+    echo "🧹 Cleaning up..."
+    cd /
+    rm -rf "$TEMP_DIR"
+    echo "✅ Cleanup complete"
+}
+trap cleanup EXIT
+
+# Create virtual environment
+echo "🐍 Creating virtual environment..."
+python3 -m venv venv
+source venv/bin/activate
+echo "✅ Virtual environment created"
+echo ""
+
+# Install from TestPyPI
+echo "📦 Installing pysigma-backend-sumologic==$VERSION from TestPyPI..."
+echo "   (Dependencies will be installed from production PyPI)"
+pip install --index-url https://test.pypi.org/simple/ \
+            --extra-index-url https://pypi.org/simple/ \
+            pysigma-backend-sumologic==$VERSION
+
+if [ $? -ne 0 ]; then
+    echo "❌ FAIL: Installation failed"
+    exit 1
+fi
+echo "✅ Package installed successfully"
+echo ""
+
+# Test 1: Import backend classes
+echo "🧪 Test 1: Import backend classes..."
+python -c "
+from sigma.backends.sumologic import SumoLogicCSEBackend, SumoLogicCSERuleBackend
+from sigma.pipelines.sumologic import sumologic_cse_pipeline
+print('✅ All classes imported successfully')
+print('   - SumoLogicCSEBackend')
+print('   - SumoLogicCSERuleBackend')
+print('   - sumologic_cse_pipeline')
+"
+
+if [ $? -ne 0 ]; then
+    echo "❌ FAIL: Import test failed"
+    exit 1
+fi
+echo ""
+
+# Test 2: Check sigma-cli integration
+echo "🧪 Test 2: Check sigma-cli availability..."
+pip install sigma-cli > /dev/null 2>&1
+echo "✅ sigma-cli installed"
+echo ""
+
+# Test 3: Create and convert a test rule
+echo "🧪 Test 3: Convert a test Sigma rule..."
+cat > test_rule.yml << 'EOF'
+title: Test Rule for Package Validation
+id: 12345678-1234-1234-1234-123456789abc
+status: test
+description: Simple test rule to validate backend functionality
+logsource:
+  category: process_creation
+  product: windows
+detection:
+  selection:
+    CommandLine|contains: 'test.exe'
+  condition: selection
+level: medium
+EOF
+
+echo "   Created test rule: test_rule.yml"
+echo ""
+
+echo "   Converting with backend..."
+sigma convert -t sumologic-cse-rule -p sumologic_cse test_rule.yml > output.json
+
+if [ $? -ne 0 ]; then
+    echo "❌ FAIL: Conversion failed"
+    exit 1
+fi
+
+echo "✅ Conversion successful"
+echo ""
+
+# Test 4: Validate conversion output
+echo "🧪 Test 4: Validate conversion output..."
+python -c "
+import json
+import sys
+
+with open('output.json') as f:
+    data = json.load(f)
+    
+# Check required fields in CSE rule
+required_fields = ['name', 'expression', 'enabled']
+missing_fields = [field for field in required_fields if field not in data]
+
+if missing_fields:
+    print(f'❌ FAIL: Missing required fields: {missing_fields}')
+    sys.exit(1)
+
+print('✅ Output validation passed')
+print(f'   Rule name: {data[\"name\"]}')
+print(f'   Expression: {data[\"expression\"][:60]}...')
+print(f'   Enabled: {data[\"enabled\"]}')
+"
+
+if [ $? -ne 0 ]; then
+    exit 1
+fi
+echo ""
+
+# Success summary
+echo "=========================================="
+echo "✅ ALL TESTS PASSED!"
+echo "=========================================="
+echo ""
+echo "Summary:"
+echo "  ✅ Package installed from TestPyPI"
+echo "  ✅ Backend classes imported successfully"
+echo "  ✅ sigma-cli integration works"
+echo "  ✅ Rule conversion successful"
+echo "  ✅ Output validation passed"
+echo ""
+echo "Version $VERSION on TestPyPI is ready for production!"
+echo ""
+
+deactivate