fix: replace deprecated UTC with timezone.utc in test files

- Update datetime.now(UTC) to datetime.now(timezone.utc) across all test files
- Fix test_block_import.py to use dynamic base height from current chain head
- Fix test_block_import_complete.py to calculate base_height from current head
- Add SSH options for non-interactive connection in test_cross_node_blockchain.py
- Add timeout parameter to SSH subprocess call
- Update all timestamp generation to use timezone.utc

tests/archived_phase_tests/phase3/test_decision_framework.py

@@ -23,7 +23,7 @@ class MockDecisionEngine:
             'decision_id': decision_id,
             'status': 'completed',
             'result': decision_data.get('proposal', 'approved'),
-            'timestamp': datetime.now(UTC).isoformat()
+            'timestamp': datetime.now(timezone.utc).isoformat()
         }
     
     async def submit_vote(self, vote_data: Dict[str, Any]) -> Dict[str, Any]:
@@ -32,7 +32,7 @@ class MockDecisionEngine:
         return {
             'vote_id': vote_id,
             'status': 'recorded',
-            'timestamp': datetime.now(UTC).isoformat()
+            'timestamp': datetime.now(timezone.utc).isoformat()
         }
 
 class MockConsensusAlgorithm:
@@ -50,7 +50,7 @@ class MockConsensusAlgorithm:
             'consensus_id': consensus_id,
             'status': 'consensus_reached',
             'agreement': True,
-            'timestamp': datetime.now(UTC).isoformat()
+            'timestamp': datetime.now(timezone.utc).isoformat()
         }
 
 class TestDecisionEngine:
@@ -102,7 +102,7 @@ class TestDecisionEngine:
                 'amounts': {'cpu': 50, 'memory': 2048, 'storage': 100}
             },
             'participants': ['agent_001', 'agent_002', 'agent_003'],
-            'deadline': (datetime.now(UTC) + timedelta(hours=1)).isoformat()
+            'deadline': (datetime.now(timezone.utc) + timedelta(hours=1)).isoformat()
         }
         
         result = await self.decision_engine.make_decision(decision_data)
@@ -157,7 +157,7 @@ class TestConsensusAlgorithm:
                     {'rule': 'priority_based', 'weight': 0.6},
                     {'rule': 'fair_share', 'weight': 0.4}
                 ],
-                'effective_date': datetime.now(UTC).isoformat()
+                'effective_date': datetime.now(timezone.utc).isoformat()
             }
         }
         
@@ -260,7 +260,7 @@ class TestAgentLifecycleManagement:
             'agent_id': 'agent_001',
             'capabilities': ['decision_making', 'voting'],
             'status': 'active',
-            'join_time': datetime.now(UTC).isoformat()
+            'join_time': datetime.now(timezone.utc).isoformat()
         }
         
         self.agents[agent_data['agent_id']] = agent_data
@@ -276,12 +276,12 @@ class TestAgentLifecycleManagement:
         self.agents[agent_id] = {
             'agent_id': agent_id,
             'status': 'active',
-            'last_update': datetime.now(UTC).isoformat()
+            'last_update': datetime.now(timezone.utc).isoformat()
         }
         
         # Update agent status
         self.agents[agent_id]['status'] = 'busy'
-        self.agents[agent_id]['last_update'] = datetime.now(UTC).isoformat()
+        self.agents[agent_id]['last_update'] = datetime.now(timezone.utc).isoformat()
         
         assert self.agents[agent_id]['status'] == 'busy'
         assert 'last_update' in self.agents[agent_id]

tests/archived_phase_tests/phase4/test_autonomous_decision_making.py

@@ -27,7 +27,7 @@ class MockAutonomousEngine:
             'action': self._determine_action(context),
             'reasoning': self._generate_reasoning(context),
             'confidence': self._calculate_confidence(context),
-            'timestamp': datetime.now(UTC).isoformat()
+            'timestamp': datetime.now(timezone.utc).isoformat()
         }
         self.decisions.append(decision)
         return decision
@@ -67,7 +67,7 @@ class MockLearningSystem:
             'experience': experience,
             'lessons_learned': self._extract_lessons(experience),
             'performance_impact': self._calculate_impact(experience),
-            'timestamp': datetime.now(UTC).isoformat()
+            'timestamp': datetime.now(timezone.utc).isoformat()
         }
         self.experience_buffer.append(learning_data)
         return learning_data
@@ -93,7 +93,7 @@ class MockLearningSystem:
             'type': adaptation_data.get('type', 'parameter_adjustment'),
             'changes': adaptation_data.get('changes', {}),
             'expected_improvement': adaptation_data.get('expected_improvement', 0.1),
-            'timestamp': datetime.now(UTC).isoformat()
+            'timestamp': datetime.now(timezone.utc).isoformat()
         }
         self.adaptations[adaptation_id] = adaptation
         return adaptation
@@ -128,7 +128,7 @@ class MockPolicyEngine:
             'compliance_score': compliance_score,
             'violations': violations,
             'approved': compliance_score >= 0.8 and len(violations) == 0,
-            'timestamp': datetime.now(UTC).isoformat()
+            'timestamp': datetime.now(timezone.utc).isoformat()
         }
     
     def _calculate_compliance(self, decision: Dict[str, Any]) -> float:

tests/archived_phase_tests/phase5/test_vision_integration.py

@@ -26,7 +26,7 @@ class MockVisionProcessor:
             'processing_type': processing_type,
             'size': len(image_data),
             'format': 'processed',
-            'timestamp': datetime.now(UTC).isoformat(),
+            'timestamp': datetime.now(timezone.utc).isoformat(),
             'analysis': await self._analyze_image(image_data, processing_type)
         }
         self.processed_images[image_id] = result
@@ -130,7 +130,7 @@ class MockMultiModalAgent:
             'result_id': result_id,
             'modalities_processed': list(results.keys()),
             'integration': await self._integrate_modalities(results),
-            'timestamp': datetime.now(UTC).isoformat()
+            'timestamp': datetime.now(timezone.utc).isoformat()
         }
         
         self.integrated_results[result_id] = integrated_result
@@ -151,7 +151,7 @@ class MockMultiModalAgent:
         return {
             'sensor_type': sensor_data.get('type', 'unknown'),
             'readings': sensor_data.get('readings', {}),
-            'timestamp': sensor_data.get('timestamp', datetime.now(UTC).isoformat()),
+            'timestamp': sensor_data.get('timestamp', datetime.now(timezone.utc).isoformat()),
             'quality': 'good'
         }
     
@@ -186,7 +186,7 @@ class MockContextIntegration:
             'vision_result': vision_result,
             'context_data': context_data,
             'enhanced_understanding': await self._enhance_understanding(vision_result, context_data),
-            'timestamp': datetime.now(UTC).isoformat()
+            'timestamp': datetime.now(timezone.utc).isoformat()
         }
         
         self.context_history.append(integration)
@@ -298,7 +298,7 @@ class TestMultiModalIntegration:
         self.sample_sensor_data = {
             'type': 'temperature',
             'readings': {'value': 25.5, 'unit': 'celsius'},
-            'timestamp': datetime.now(UTC).isoformat()
+            'timestamp': datetime.now(timezone.utc).isoformat()
         }
     
     @pytest.mark.asyncio
@@ -431,7 +431,7 @@ class TestContextIntegration:
             vision_result = await self.vision_processor.process_image(self.sample_image)
             context_data = {
                 'location': f'location_{i}',
-                'timestamp': datetime.now(UTC).isoformat()
+                'timestamp': datetime.now(timezone.utc).isoformat()
             }
             await self.context_integration.integrate_context(vision_result, context_data)
         
@@ -530,11 +530,11 @@ class TestPerformanceMetrics:
     @pytest.mark.asyncio
     async def test_processing_speed(self):
         """Test image processing speed"""
-        start_time = datetime.now(UTC)
+        start_time = datetime.now(timezone.utc)
         
         result = await self.vision_processor.process_image(self.sample_image)
         
-        end_time = datetime.now(UTC)
+        end_time = datetime.now(timezone.utc)
         processing_time = (end_time - start_time).total_seconds()
         
         assert processing_time < 2.0  # Should process within 2 seconds
@@ -545,12 +545,12 @@ class TestPerformanceMetrics:
         """Test batch image processing"""
         images = [self.sample_image] * 5
         
-        start_time = datetime.now(UTC)
+        start_time = datetime.now(timezone.utc)
         results = []
         for image in images:
             result = await self.vision_processor.process_image(image)
             results.append(result)
-        end_time = datetime.now(UTC)
+        end_time = datetime.now(timezone.utc)
         
         total_time = (end_time - start_time).total_seconds()
         avg_time = total_time / len(images)
@@ -625,9 +625,9 @@ class TestVisionIntegration:
         # Simulate real-time processing
         processing_times = []
         for i in range(10):
-            start_time = datetime.now(UTC)
+            start_time = datetime.now(timezone.utc)
             await vision_processor.process_image(f'frame_{i}'.encode())
-            end_time = datetime.now(UTC)
+            end_time = datetime.now(timezone.utc)
             processing_times.append((end_time - start_time).total_seconds())
         
         avg_time = sum(processing_times) / len(processing_times)