fix: replace E2E test heredoc with echo commands in integration-tests.yml

INTEGRATION TESTS YAML FIX: Resolve line 292 YAML syntax error

Issues Fixed:
❌ yaml: line 292: could not find expected ':'
❌ E2E test heredoc causing YAML parsing issues
❌ Multi-line Python script content being parsed as YAML
❌ Workflow config file invalid

Root Cause:
- Remaining heredoc syntax in E2E test section
- YAML parser failing on multi-line content
- Need to convert all heredocs to echo commands

Solution Applied:
✅ Replaced E2E test heredoc with echo commands
✅ Line-by-line Python script creation for E2E tests
✅ Proper YAML syntax for E2E test section
✅ Maintained complete E2E test functionality

Implementation Changes:
- Removed E2E test heredoc syntax completely
- Used echo commands for each Python line
- Proper shell escaping for quotes and JSON structures
- Line-by-line file construction

Generated Content:
- Complete E2E test script
- Blockchain operations testing functions
- API endpoint testing functions
- End-to-end workflow validation logic

Impact:
- YAML file now validates completely
- E2E test creation works properly
- Complete YAML syntax validation achieved
- Workflow config file is now valid
- CI/CD execution without syntax errors

This resolves the final YAML syntax error in integration-tests.yml
and makes the workflow ready for CI/CD execution.

.gitea/workflows/integration-tests.yml

@@ -288,57 +288,55 @@ jobs:
           echo "Testing blockchain operations..."
           
           # Create E2E test script
-          cat > test_e2e.py << 'EOF'
+          echo 'import requests' > test_e2e.py
-import requests
+          echo 'import json' >> test_e2e.py
-import json
+          echo 'import time' >> test_e2e.py
-import time
+          echo '' >> test_e2e.py
-
+          echo 'def test_blockchain_operations():' >> test_e2e.py
-def test_blockchain_operations():
+          echo '    try:' >> test_e2e.py
-    try:
+          echo '        # Get latest block' >> test_e2e.py
-        # Get latest block
+          echo '        payload = {' >> test_e2e.py
-        payload = {
+          echo '            "jsonrpc": "2.0",' >> test_e2e.py
-            "jsonrpc": "2.0",
+          echo '            "method": "eth_getBlockByNumber",' >> test_e2e.py
-            "method": "eth_getBlockByNumber",
+          echo '            "params": ["latest", False],' >> test_e2e.py
-            "params": ["latest", False],
+          echo '            "id": 1' >> test_e2e.py
-            "id": 1
+          echo '        }' >> test_e2e.py
-        }
+          echo '        response = requests.post('"'"'http://localhost:8545'"'"', json=payload, timeout=5)' >> test_e2e.py
-        response = requests.post('http://localhost:8545', json=payload, timeout=5)
+          echo '        if response.status_code == 200:' >> test_e2e.py
-        if response.status_code == 200:
+          echo '            block = response.json().get('"'"'result'"'"', {})' >> test_e2e.py
-            block = response.json().get('result', {})
+          echo '            print(f"✅ Latest block: {block.get('"'"'number'"'"', '"'"'Unknown'"'"')}")' >> test_e2e.py
-            print(f"✅ Latest block: {block.get('number', 'Unknown')}")
+          echo '            return True' >> test_e2e.py
-            return True
+          echo '    except Exception as e:' >> test_e2e.py
-    except Exception as e:
+          echo '        print(f"❌ Blockchain operations error: {e}")' >> test_e2e.py
-        print(f"❌ Blockchain operations error: {e}")
+          echo '        return False' >> test_e2e.py
-        return False
+          echo '' >> test_e2e.py
-
+          echo 'def test_api_endpoints():' >> test_e2e.py
-def test_api_endpoints():
+          echo '    try:' >> test_e2e.py
-    try:
+          echo '        # Test API health' >> test_e2e.py
-        # Test API health
+          echo '        response = requests.get('"'"'http://localhost:8000/'"'"', timeout=5)' >> test_e2e.py
-        response = requests.get('http://localhost:8000/', timeout=5)
+          echo '        if response.status_code == 200:' >> test_e2e.py
-        if response.status_code == 200:
+          echo '            print("✅ API health check passed")' >> test_e2e.py
-            print("✅ API health check passed")
+          echo '            return True' >> test_e2e.py
-            return True
+          echo '    except Exception as e:' >> test_e2e.py
-    except Exception as e:
+          echo '        print(f"❌ API endpoints error: {e}")' >> test_e2e.py
-        print(f"❌ API endpoints error: {e}")
+          echo '        return False' >> test_e2e.py
-        return False
+          echo '' >> test_e2e.py
-
+          echo 'if __name__ == "__main__":' >> test_e2e.py
-if __name__ == "__main__":
+          echo '    print("🔄 Running end-to-end workflow tests...")' >> test_e2e.py
-    print("🔄 Running end-to-end workflow tests...")
+          echo '    ' >> test_e2e.py
-    
+          echo '    results = []' >> test_e2e.py
-    results = []
+          echo '    results.append(test_blockchain_operations())' >> test_e2e.py
-    results.append(test_blockchain_operations())
+          echo '    results.append(test_api_endpoints())' >> test_e2e.py
-    results.append(test_api_endpoints())
+          echo '    ' >> test_e2e.py
-    
+          echo '    success_count = sum(results)' >> test_e2e.py
-    success_count = sum(results)
+          echo '    total_count = len(results)' >> test_e2e.py
-    total_count = len(results)
+          echo '    ' >> test_e2e.py
-    
+          echo '    print(f"\n📊 E2E Results: {success_count}/{total_count} workflows working")' >> test_e2e.py
-    print(f"\n📊 E2E Results: {success_count}/{total_count} workflows working")
+          echo '    ' >> test_e2e.py
-    
+          echo '    if success_count == total_count:' >> test_e2e.py
-    if success_count == total_count:
+          echo '        print("✅ All end-to-end workflows successful")' >> test_e2e.py
-        print("✅ All end-to-end workflows successful")
+          echo '    else:' >> test_e2e.py
-    else:
+          echo '        print("⚠️  Some workflows not working properly")' >> test_e2e.py
-        print("⚠️  Some workflows not working properly")
-EOF
           
           # Run E2E test
           python test_e2e.py