"""
UI API模块单元测试

本模块为UI API模块提供全面的单元测试覆盖，包括：
- REST API端点测试
- WebSocket事件处理测试
- 工作流编排测试
- 作业管理测试
- 文件上传测试
- 错误处理测试
- 认证授权测试
"""

import pytest
import asyncio
import json
import tempfile
import os
from pathlib import Path
from unittest.mock import Mock, patch, AsyncMock, MagicMock
from flask import Flask
from flask_socketio import SocketIO
from typing import Dict, List, Any, Optional

from src.ui.api import (
    FileUploadAPI, CodeParseAPI, SpecGenerationAPI, MutationAPI, VerificationAPI,
    WorkflowAPI, JobListAPI, JobDetailAPI, WorkflowListAPI, SystemStatusAPI
)
from src.ui.websocket import WebSocketHandler, WebSocketManager, EventType
from src.ui.workflow import WorkflowManager, WorkflowConfig, WorkflowMode
from src.ui.job_manager import JobManager, JobStatus, JobType
from src.ui.exceptions import (
    ValidationError, AuthenticationError, AuthorizationError,
    ResourceNotFoundError, WorkflowError, JobError, TimeoutError,
    ConcurrencyError, ConfigurationError, ExternalServiceError, APIError
)
from src.utils.config import ConfigManager


class TestFileUploadAPI:
    """FileUploadAPI类测试"""

    def setup_method(self):
        """测试方法设置"""
        self.app = Flask(__name__)
        self.app.config['TESTING'] = True
        self.app.config['SECRET_KEY'] = 'test-secret'
        self.app.config['UPLOAD_FOLDER'] = tempfile.mkdtemp()
        self.app.config['MAX_CONTENT_LENGTH'] = 16 * 1024 * 1024  # 16MB
        self.app.config['ALLOWED_EXTENSIONS'] = {'.c', '.cpp', '.h', '.hpp'}

        with self.app.test_request_context():
            self.api = FileUploadAPI()

    def test_post_with_valid_file(self):
        """测试上传有效文件"""
        # 创建临时文件
        with tempfile.NamedTemporaryFile(suffix='.c', delete=False) as f:
            f.write(b'int test() { return 0; }')
            f.flush()

            # 模拟文件上传
            with open(f.name, 'rb') as upload_file:
                from werkzeug.datastructures import FileStorage
                file_storage = FileStorage(
                    stream=upload_file,
                    filename='test.c',
                    content_type='text/plain'
                )

                with self.app.test_request_context(method='POST', data={'file': file_storage}):
                    response = self.api.post()

                    assert response.status_code == 200
                    data = response.get_json()
                    assert data['success'] is True
                    assert 'job_id' in data['data']

            os.unlink(f.name)

    def test_post_with_pasted_code(self):
        """测试粘贴代码上传"""
        code_content = 'int pasted_function() { return 42; }'

        with self.app.test_request_context(
            method='POST',
            data={'code_content': code_content}
        ):
            response = self.api.post()

            assert response.status_code == 200
            data = response.get_json()
            assert data['success'] is True
                    assert 'job_id' in data['data']

    def test_post_no_file_or_code(self):
        """测试无文件或代码上传"""
        with self.app.test_request_context(method='POST'):
            response = self.api.post()

            assert response.status_code == 400
            data = response.get_json()
            assert data['success'] is False
            assert 'error' in data

    def test_post_invalid_file_extension(self):
        """测试无效文件扩展名"""
        with tempfile.NamedTemporaryFile(suffix='.txt', delete=False) as f:
            f.write(b'invalid content')
            f.flush()

            with open(f.name, 'rb') as upload_file:
                from werkzeug.datastructures import FileStorage
                file_storage = FileStorage(
                    stream=upload_file,
                    filename='test.txt',
                    content_type='text/plain'
                )

                with self.app.test_request_context(method='POST', data={'file': file_storage}):
                    response = self.api.post()

                    assert response.status_code == 400
                    data = response.get_json()
                    assert data['success'] is False

            os.unlink(f.name)

    def test_post_file_too_large(self):
        """测试文件过大"""
        # 创建一个超过限制的大文件
        large_content = b'0' * (17 * 1024 * 1024)  # 17MB

        with tempfile.NamedTemporaryFile(suffix='.c', delete=False) as f:
            f.write(large_content)
            f.flush()

            try:
                with open(f.name, 'rb') as upload_file:
                    from werkzeug.datastructures import FileStorage
                    file_storage = FileStorage(
                        stream=upload_file,
                        filename='large.c',
                        content_type='text/plain'
                    )

                    with self.app.test_request_context(method='POST', data={'file': file_storage}):
                        response = self.api.post()

                        assert response.status_code == 413
            finally:
                os.unlink(f.name)


class TestCodeParseAPI:
    """CodeParseAPI类测试"""

    def setup_method(self):
        """测试方法设置"""
        self.app = Flask(__name__)
        self.app.config['TESTING'] = True
        with self.app.test_request_context():
            self.api = CodeParseAPI()

    def test_post_with_valid_data(self):
        """测试使用有效数据解析"""
        data = {
            'file_path': '/tmp/test.c',
            'options': {
                'include_functions': True,
                'include_variables': True,
                'complexity_analysis': True
            }
        }

        with patch('src.ui.api.JobManager') as mock_job_manager:
            mock_job = Mock()
            mock_job.job_id = 'test-job-id'
            mock_job_manager.return_value.create_job.return_value = mock_job

            with self.app.test_request_context(json=data):
                response = self.api.post()

                assert response.status_code == 200
                response_data = response.get_json()
                assert response_data['success'] is True
                assert 'job_id' in response_data['data']

    def test_post_missing_file_path(self):
        """测试缺少文件路径"""
        data = {'options': {'include_functions': True}}

        with self.app.test_request_context(json=data):
            response = self.api.post()

            assert response.status_code == 400
            response_data = response.get_json()
            assert response_data['success'] is False
            assert 'file_path' in response_data['error']

    def test_post_invalid_options(self):
        """测试无效选项"""
        data = {
            'file_path': '/tmp/test.c',
            'options': 'invalid_options'  # 应该是字典
        }

        with self.app.test_request_context(json=data):
            response = self.api.post()

            assert response.status_code == 400
            response_data = response.get_json()
            assert response_data['success'] is False


class TestSpecGenerationAPI:
    """SpecGenerationAPI类测试"""

    def setup_method(self):
        """测试方法设置"""
        self.app = Flask(__name__)
        self.app.config['TESTING'] = True
        with self.app.test_request_context():
            self.api = SpecGenerationAPI()

    def test_post_with_valid_metadata(self):
        """测试使用有效元数据生成规范"""
        data = {
            'functions': [
                {
                    'name': 'test_function',
                    'return_type': 'int',
                    'parameters': [
                        {'name': 'x', 'type': 'int'},
                        {'name': 'y', 'type': 'int'}
                    ],
                    'complexity_score': 0.5
                }
            ],
            'options': {
                'verification_types': ['memory_safety', 'overflow_detection'],
                'include_comments': True,
                'style_guide': 'cbmc'
            }
        }

        with patch('src.ui.api.JobManager') as mock_job_manager:
            mock_job = Mock()
            mock_job.job_id = 'spec-job-id'
            mock_job_manager.return_value.create_job.return_value = mock_job

            with self.app.test_request_context(json=data):
                response = self.api.post()

                assert response.status_code == 200
                response_data = response.get_json()
                assert response_data['success'] is True
                assert 'job_id' in response_data['data']

    def test_post_empty_functions_list(self):
        """测试空函数列表"""
        data = {
            'functions': [],
            'options': {'verification_types': ['memory_safety']}
        }

        with self.app.test_request_context(json=data):
            response = self.api.post()

            assert response.status_code == 400
            response_data = response.get_json()
            assert response_data['success'] is False
            assert 'functions' in response_data['error']

    def test_post_invalid_function_metadata(self):
        """测试无效函数元数据"""
        data = {
            'functions': [
                {
                    'name': '',  # 空名称
                    'return_type': 'int'
                    # 缺少必要字段
                }
            ]
        }

        with self.app.test_request_context(json=data):
            response = self.api.post()

            assert response.status_code == 400
            response_data = response.get_json()
            assert response_data['success'] is False


class TestMutationAPI:
    """MutationAPI类测试"""

    def setup_method(self):
        """测试方法设置"""
        self.app = Flask(__name__)
        self.app.config['TESTING'] = True
        with self.app.test_request_context():
            self.api = MutationAPI()

    def test_post_with_valid_specification(self):
        """测试使用有效规范进行突变"""
        data = {
            'specification': 'void test(int x) { __CPROVER_assume(x > 0); }',
            'function_name': 'test',
            'options': {
                'mutation_types': ['predicate', 'boundary'],
                'max_mutations': 10,
                'quality_threshold': 0.7
            }
        }

        with patch('src.ui.api.JobManager') as mock_job_manager:
            mock_job = Mock()
            mock_job.job_id = 'mutation-job-id'
            mock_job_manager.return_value.create_job.return_value = mock_job

            with self.app.test_request_context(json=data):
                response = self.api.post()

                assert response.status_code == 200
                response_data = response.get_json()
                assert response_data['success'] is True
                assert 'job_id' in response_data['data']

    def test_post_missing_specification(self):
        """测试缺少规范"""
        data = {
            'function_name': 'test',
            'options': {'mutation_types': ['predicate']}
        }

        with self.app.test_request_context(json=data):
            response = self.api.post()

            assert response.status_code == 400
            response_data = response.get_json()
            assert response_data['success'] is False
            assert 'specification' in response_data['error']

    def test_post_invalid_specification_syntax(self):
        """测试无效规范语法"""
        data = {
            'specification': 'invalid syntax here {',
            'function_name': 'test'
        }

        with self.app.test_request_context(json=data):
            response = self.api.post()

            assert response.status_code == 400
            response_data = response.get_json()
            assert response_data['success'] is False


class TestVerificationAPI:
    """VerificationAPI类测试"""

    def setup_method(self):
        """测试方法设置"""
        self.app = Flask(__name__)
        self.app.config['TESTING'] = True
        with self.app.test_request_context():
            self.api = VerificationAPI()

    def test_post_with_valid_specification(self):
        """测试使用有效规范进行验证"""
        data = {
            'specification': 'void test(int x) { __CPROVER_assert(x > 0, "positive"); }',
            'function_name': 'test',
            'options': {
                'verification_types': ['memory_safety'],
                'timeout': 300,
                'depth': 20
            }
        }

        with patch('src.ui.api.JobManager') as mock_job_manager:
            mock_job = Mock()
            mock_job.job_id = 'verification-job-id'
            mock_job_manager.return_value.create_job.return_value = mock_job

            with self.app.test_request_context(json=data):
                response = self.api.post()

                assert response.status_code == 200
                response_data = response.get_json()
                assert response_data['success'] is True
                assert 'job_id' in response_data['data']

    def test_post_missing_specification(self):
        """测试缺少规范"""
        data = {
            'function_name': 'test',
            'options': {'verification_types': ['memory_safety']}
        }

        with self.app.test_request_context(json=data):
            response = self.api.post()

            assert response.status_code == 400
            response_data = response.get_json()
            assert response_data['success'] is False
            assert 'specification' in response_data['error']

    def test_post_invalid_verification_options(self):
        """测试无效验证选项"""
        data = {
            'specification': 'void test(int x) { }',
            'function_name': 'test',
            'options': {
                'timeout': -1  # 无效超时
            }
        }

        with self.app.test_request_context(json=data):
            response = self.api.post()

            assert response.status_code == 400
            response_data = response.get_json()
            assert response_data['success'] is False


class TestWorkflowAPI:
    """WorkflowAPI类测试"""

    def setup_method(self):
        """测试方法设置"""
        self.app = Flask(__name__)
        self.app.config['TESTING'] = True
        with self.app.test_request_context():
            self.api = WorkflowAPI()

    def test_post_start_workflow(self):
        """测试启动工作流"""
        data = {
            'source_files': ['/tmp/test.c'],
            'target_functions': ['test_function'],
            'workflow_config': {
                'mode': 'standard',
                'enable_parsing': True,
                'enable_generation': True,
                'enable_mutation': True,
                'enable_verification': True
            }
        }

        with patch('src.ui.api._workflow_manager') as mock_workflow_manager:
            mock_workflow_manager.start_workflow.return_value = 'workflow-123'

            with self.app.test_request_context(json=data):
                response = self.api.post()

                assert response.status_code == 200
                response_data = response.get_json()
                assert response_data['success'] is True
                assert 'workflow_id' in response_data
                assert response_data['workflow_id'] == 'workflow-123'

    def test_post_missing_source_files(self):
        """测试缺少源文件"""
        data = {
            'target_functions': ['test_function'],
            'workflow_config': {'mode': 'standard'}
        }

        with self.app.test_request_context(json=data):
            response = self.api.post()

            assert response.status_code == 400
            response_data = response.get_json()
            assert response_data['success'] is False
            assert 'source_files' in response_data['error']

    def test_get_workflow_status(self):
        """测试获取工作流状态"""
        workflow_id = 'workflow-123'

        with patch('src.ui.api._workflow_manager') as mock_workflow_manager:
            mock_status = {
                'workflow_id': workflow_id,
                'status': 'running',
                'progress': 50.0,
                'current_step': 'mutation'
            }
            mock_workflow_manager.get_workflow_status.return_value = mock_status

            with self.app.test_request_context():
                response = self.api.get(workflow_id)

                assert response.status_code == 200
                response_data = response.get_json()
                assert response_data['success'] is True
                assert response_data['workflow_id'] == workflow_id
                assert response_data['status'] == 'running'

    def test_delete_workflow(self):
        """测试删除工作流"""
        workflow_id = 'workflow-123'

        with patch('src.ui.api._workflow_manager') as mock_workflow_manager:
            mock_workflow_manager.cancel_workflow.return_value = True

            with self.app.test_request_context():
                response = self.api.delete(workflow_id)

                assert response.status_code == 200
                response_data = response.get_json()
                assert response_data['success'] is True
                assert response_data['message'] == 'Workflow cancelled successfully'


class TestJobListAPI:
    """JobListAPI类测试"""

    def setup_method(self):
        """测试方法设置"""
        self.app = Flask(__name__)
        self.app.config['TESTING'] = True
        with self.app.test_request_context():
            self.api = JobListAPI()

    def test_get_job_list(self):
        """测试获取作业列表"""
        with patch('src.ui.api._job_manager') as mock_job_manager:
            mock_jobs = [
                Mock(job_id='job-1', job_type=JobType.CODE_PARSING, status=JobStatus.COMPLETED),
                Mock(job_id='job-2', job_type=JobType.SPEC_GENERATION, status=JobStatus.RUNNING)
            ]
            mock_job_manager.get_jobs.return_value = mock_jobs

            with self.app.test_request_context():
                response = self.api.get()

                assert response.status_code == 200
                response_data = response.get_json()
                assert response_data['success'] is True
                assert len(response_data['jobs']) == 2

    def test_get_job_list_with_filters(self):
        """测试带过滤器的作业列表"""
        with patch('src.ui.api._job_manager') as mock_job_manager:
            mock_jobs = [Mock(job_id='job-1', job_type=JobType.CODE_PARSING, status=JobStatus.COMPLETED)]
            mock_job_manager.get_jobs.return_value = mock_jobs

            with self.app.test_request_context(query_string='status=completed&type=code_parsing'):
                response = self.api.get()

                assert response.status_code == 200
                response_data = response.get_json()
                assert response_data['success'] is True
                assert len(response_data['jobs']) == 1


class TestJobDetailAPI:
    """JobDetailAPI类测试"""

    def setup_method(self):
        """测试方法设置"""
        self.app = Flask(__name__)
        self.app.config['TESTING'] = True
        with self.app.test_request_context():
            self.api = JobDetailAPI()

    def test_get_job_details(self):
        """测试获取作业详情"""
        job_id = 'job-123'

        with patch('src.ui.api._job_manager') as mock_job_manager:
            mock_job = Mock(
                job_id=job_id,
                job_type=JobType.CODE_PARSING,
                status=JobStatus.COMPLETED,
                progress=Mock(percentage=100.0, message='Completed'),
                created_at='2023-01-01T00:00:00',
                completed_at='2023-01-01T00:05:00'
            )
            mock_job_manager.get_job.return_value = mock_job

            with self.app.test_request_context():
                response = self.api.get(job_id)

                assert response.status_code == 200
                response_data = response.get_json()
                assert response_data['success'] is True
                assert response_data['job']['job_id'] == job_id
                assert response_data['job']['status'] == 'completed'

    def test_get_nonexistent_job(self):
        """测试获取不存在的作业"""
        job_id = 'nonexistent-job'

        with patch('src.ui.api._job_manager') as mock_job_manager:
            mock_job_manager.get_job.return_value = None

            with self.app.test_request_context():
                response = self.api.get(job_id)

                assert response.status_code == 404
                response_data = response.get_json()
                assert response_data['success'] is False
                assert 'not found' in response_data['error'].lower()

    def test_delete_job(self):
        """测试删除作业"""
        job_id = 'job-123'

        with patch('src.ui.api._job_manager') as mock_job_manager:
            mock_job_manager.cancel_job.return_value = True

            with self.app.test_request_context():
                response = self.api.delete(job_id)

                assert response.status_code == 200
                response_data = response.get_json()
                assert response_data['success'] is True


class TestSystemStatusAPI:
    """SystemStatusAPI类测试"""

    def setup_method(self):
        """测试方法设置"""
        self.app = Flask(__name__)
        self.app.config['TESTING'] = True
        with self.app.test_request_context():
            self.api = SystemStatusAPI()

    def test_get_system_status(self):
        """测试获取系统状态"""
        with patch('src.ui.api._job_manager') as mock_job_manager:
            mock_job_manager.get_statistics.return_value = {
                'total_jobs': 10,
                'active_jobs': 2,
                'completed_jobs': 8
            }

            with patch('src.ui.api._workflow_manager') as mock_workflow_manager:
                mock_workflow_manager.get_statistics.return_value = {
                    'total_workflows': 5,
                    'active_workflows': 1
                }

                with self.app.test_request_context():
                    response = self.api.get()

                    assert response.status_code == 200
                    response_data = response.get_json()
                    assert response_data['success'] is True
                    assert 'status' in response_data
                    assert 'version' in response_data
                    assert 'statistics' in response_data


class TestWebSocketIntegration:
    """WebSocket集成测试"""

    def setup_method(self):
        """测试方法设置"""
        self.app = Flask(__name__)
        self.app.config['TESTING'] = True
        self.socketio = SocketIO(self.app)
        self.websocket_handler = WebSocketHandler(self.socketio, Mock())

    def test_websocket_event_broadcast(self):
        """测试WebSocket事件广播"""
        with patch.object(self.websocket_handler, 'send_job_progress') as mock_send:
            self.websocket_handler.send_job_progress('job-123', {
                'percentage': 50.0,
                'message': 'Processing...'
            })

            mock_send.assert_called_once()

    def test_websocket_workflow_update(self):
        """测试WebSocket工作流更新"""
        with patch.object(self.websocket_handler, 'send_workflow_update') as mock_send:
            self.websocket_handler.send_workflow_update('session-123', {
                'workflow_id': 'workflow-123',
                'status': 'completed'
            })

            mock_send.assert_called_once()

    def test_websocket_error_notification(self):
        """测试WebSocket错误通知"""
        with patch.object(self.websocket_handler, 'send_error_notification') as mock_send:
            self.websocket_handler.send_error_notification(
                'Test error message',
                'ValidationError',
                {'field': 'test_field'}
            )

            mock_send.assert_called_once()


class TestAPIErrorHandling:
    """API错误处理测试"""

    def setup_method(self):
        """测试方法设置"""
        self.app = Flask(__name__)
        self.app.config['TESTING'] = True
        with self.app.test_request_context():
            pass

    def test_validation_error_response(self):
        """测试验证错误响应"""
        error = ValidationError("Invalid input", field="test_field")

        response = {
            "success": False,
            "error": str(error),
            "error_type": "ValidationError",
            "field": "test_field"
        }

        assert response["success"] is False
        assert "Invalid input" in response["error"]
        assert response["error_type"] == "ValidationError"

    def test_authentication_error_response(self):
        """测试认证错误响应"""
        error = AuthenticationError("Authentication required")

        response = {
            "success": False,
            "error": str(error),
            "error_type": "AuthenticationError"
        }

        assert response["success"] is False
        assert "Authentication required" in response["error"]

    def test_resource_not_found_error_response(self):
        """测试资源未找到错误响应"""
        error = ResourceNotFoundError("Resource not found", resource_id="123")

        response = {
            "success": False,
            "error": str(error),
            "error_type": "ResourceNotFoundError",
            "resource_id": "123"
        }

        assert response["success"] is False
        assert "Resource not found" in response["error"]

    def test_job_error_response(self):
        """测试作业错误响应"""
        error = JobError("Job failed", job_id="job-123")

        response = {
            "success": False,
            "error": str(error),
            "error_type": "JobError",
            "job_id": "job-123"
        }

        assert response["success"] is False
        assert "Job failed" in response["error"]

    def test_workflow_error_response(self):
        """测试工作流错误响应"""
        error = WorkflowError("Workflow error", workflow_step="mutation")

        response = {
            "success": False,
            "error": str(error),
            "error_type": "WorkflowError",
            "workflow_step": "mutation"
        }

        assert response["success"] is False
        assert "Workflow error" in response["error"]

    def test_timeout_error_response(self):
        """测试超时错误响应"""
        error = TimeoutError("Operation timed out", operation="verification", timeout_seconds=300)

        response = {
            "success": False,
            "error": str(error),
            "error_type": "TimeoutError",
            "operation": "verification",
            "timeout_seconds": 300
        }

        assert response["success"] is False
        assert "Operation timed out" in response["error"]

    def test_concurrency_error_response(self):
        """测试并发错误响应"""
        error = ConcurrencyError("Too many concurrent operations")

        response = {
            "success": False,
            "error": str(error),
            "error_type": "ConcurrencyError"
        }

        assert response["success"] is False
        assert "Too many concurrent operations" in response["error"]

    def test_configuration_error_response(self):
        """测试配置错误响应"""
        error = ConfigurationError("Invalid configuration")

        response = {
            "success": False,
            "error": str(error),
            "error_type": "ConfigurationError"
        }

        assert response["success"] is False
        assert "Invalid configuration" in response["error"]

    def test_external_service_error_response(self):
        """测试外部服务错误响应"""
        error = ExternalServiceError("Service unavailable", service="llm_provider")

        response = {
            "success": False,
            "error": str(error),
            "error_type": "ExternalServiceError",
            "service": "llm_provider"
        }

        assert response["success"] is False
        assert "Service unavailable" in response["error"]


class TestAPIIntegration:
    """API集成测试"""

    def setup_method(self):
        """测试方法设置"""
        self.app = Flask(__name__)
        self.app.config['TESTING'] = True
        self.app.config['SECRET_KEY'] = 'test-secret'

        # 模拟依赖项
        self.mock_job_manager = Mock()
        self.mock_workflow_manager = Mock()
        self.mock_websocket_handler = Mock()

        # 设置应用上下文
        with self.app.app_context():
            from src.ui.api import init_api
            init_api(
                config=Mock(),
                job_manager=self.mock_job_manager,
                workflow_manager=self.mock_workflow_manager,
                websocket_handler=self.mock_websocket_handler
            )

    def test_complete_workflow_integration(self):
        """测试完整工作流集成"""
        # 设置模拟响应
        self.mock_workflow_manager.start_workflow.return_value = 'workflow-123'
        self.mock_job_manager.create_job.return_value = Mock(job_id='job-123')

        with self.app.test_client() as client:
            # 测试文件上传
            with tempfile.NamedTemporaryFile(suffix='.c', delete=False) as f:
                f.write(b'int test() { return 0; }')
                f.flush()

                try:
                    with open(f.name, 'rb') as upload_file:
                        response = client.post('/api/upload', data={'file': upload_file})
                        assert response.status_code == 200

                        # 测试工作流启动
                        workflow_data = {
                            'source_files': [f.name],
                            'target_functions': ['test'],
                            'workflow_config': {'mode': 'standard'}
                        }
                        response = client.post('/api/workflow', json=workflow_data)
                        assert response.status_code == 200

                        # 测试作业列表
                        response = client.get('/api/jobs')
                        assert response.status_code == 200

                        # 测试系统状态
                        response = client.get('/api/status')
                        assert response.status_code == 200

                finally:
                    os.unlink(f.name)

    def test_error_propagation(self):
        """测试错误传播"""
        # 设置模拟错误
        self.mock_job_manager.create_job.side_effect = JobError("Database error")

        with self.app.test_client() as client:
            with tempfile.NamedTemporaryFile(suffix='.c', delete=False) as f:
                f.write(b'int test() { return 0; }')
                f.flush()

                try:
                    with open(f.name, 'rb') as upload_file:
                        response = client.post('/api/upload', data={'file': upload_file})
                        assert response.status_code == 500
                        data = response.get_json()
                        assert data['success'] is False
                        assert 'Database error' in data['error']

                finally:
                    os.unlink(f.name)

    def test_request_validation(self):
        """测试请求验证"""
        with self.app.test_client() as client:
            # 测试无效JSON
            response = client.post('/api/workflow', data='invalid json', content_type='application/json')
            assert response.status_code == 400

            # 测试缺少必需字段
            response = client.post('/api/workflow', json={})
            assert response.status_code == 400


if __name__ == "__main__":
    pytest.main([__file__, "-v"])