stateDiagram-v2    [*] --> Unregistered    Unregistered --> Registering: start_register    Registering --> Unregistered: register_failed    Registering --> LoggingIn: register_success    Unregistered --> LoggingIn: start_login    LoggingIn --> Unregistered: login_failed    LoggingIn --> LoggedIn: login_success    LoggedIn --> Unregistered: logout    LoggedIn --> [*]: exit

from typing import List, Dict, Setfrom abc import ABC, abstractmethod
class PathGeneratorBase(ABC):    def __init__(self):        self.graph = {}        self.paths = []        self.events = {}            @abstractmethod    def parse_input(self):        """解析输入源（Mermaid或SCXML）"""        pass            def generate_paths(self, max_depth: int = 15) -> List[List[str]]:        """通用的路径生成算法"""        paths = []        start = self._find_start_state()        visited_states = set()                def dfs(current: str, path: List[str]):            if len(path) > max_depth:                return                            current_transitions = self._get_transitions(current)                        if self._should_terminate(current, path, current_transitions):                paths.append(path[:])                return                            visited_states.add(current)                        for next_state in current_transitions:                dfs(next_state, path + [next_state])                            visited_states.remove(current)                    dfs(start, [start])        return self._deduplicate_paths(paths)            def _find_start_state(self) -> str:        """查找起始状态"""        if 'START' in self.graph:            return 'START'                    in_degrees = self._calculate_in_degrees()        for node, degree in in_degrees.items():            if degree == 0:                return node        return None            def _get_transitions(self, state: str) -> List[str]:        """获取状态的所有可能转换"""        if state not in self.graph:            return []        return [target for target in self.graph[state]]            def _should_terminate(self, current: str, path: List[str], transitions: List[str]) -> bool:        """判断是否应该终止当前路径"""        return len(path) > 1 and (not transitions or current in path[:-1])            def _deduplicate_paths(self, paths: List[List[str]]) -> List[List[str]]:        """去除重复路径"""        unique_paths = []        path_strings = set()                for path in sorted(paths, key=len):            path_str = "->".join(path)            if path_str not in path_strings:                path_strings.add(path_str)                unique_paths.append(path)                        return unique_paths            def calculate_coverage(self) -> Dict:        """计算测试覆盖率"""        all_states = set(self.graph.keys())        all_transitions = set()        covered_states = set()        covered_transitions = set()                for path in self.paths:            covered_states.update(path)            for i in range(len(path) - 1):                transition = (path[i], path[i + 1])                covered_transitions.add(transition)                all_transitions.add(transition)                        return {            "state_coverage": len(covered_states) / len(all_states) * 100,            "transition_coverage": len(covered_transitions) / len(all_transitions) * 100        }

[  {    "precondition": "用户未注册，系统处于未登录状态",    "operation_procedure": [      "1. 访问系统首页",      "2. 输入用户名：a1_（3字符）",      "3. 输入密码：Passw0rd!",      "4. 点击'注册'按钮"    ],    "expected_result": [      "注册失败，提示'用户名长度需在4-20字符之间'",      "页面停留在注册/登录页面"    ]  },  {    "precondition": "用户未注册，系统处于未登录状态",    "operation_procedure": [      "1. 访问系统首页",      "2. 输入用户名：existing_user",      "3. 输入密码：Passw0rd!",      "4. 点击'注册'按钮",      "5. 再次输入相同用户名和密码点击'注册'按钮"    ],    "expected_result": [      "第二次注册时提示'用户名已存在'",      "页面停留在注册/登录页面"    ]  },  {    "precondition": "用户未注册，系统处于未登录状态",    "operation_procedure": [      "1. 访问系统首页",      "2. 输入用户名：user😊name",      "3. 输入密码：Passw0rd!",      "4. 点击'注册'按钮"    ],    "expected_result": [      "注册失败，提示'用户名包含非法字符'",      "页面停留在注册/登录页面"    ]  },  {    "precondition": "用户未注册，系统处于未登录状态",    "operation_procedure": [      "1. 访问系统首页",      "2. 输入不存在的用户名：new_user",      "3. 输入错误密码：wrongPass",      "4. 点击'登录'按钮"    ],    "expected_result": [      "登录失败，提示'用户名或密码错误'",      "页面停留在注册/登录页面"    ]  },  {    "precondition": "用户已注册，系统处于未登录状态",    "operation_procedure": [      "1. 访问系统首页",      "2. 输入已注册用户名：valid_user",      "3. 输入正确密码：Passw0rd!",      "4. 点击'登录'按钮"    ],    "expected_result": [      "登录成功，跳转至带图片的首页",      "页面显示退出按钮"    ]  },  {    "precondition": "新用户完成注册，系统处于未登录状态",    "operation_procedure": [      "1. 访问系统首页",      "2. 输入符合要求的用户名：new_user_123",      "3. 输入符合要求的密码：Passw0rd!",      "4. 点击'注册'按钮",      "5. 使用相同凭证点击'登录'按钮"    ],    "expected_result": [      "注册成功后自动清除表单",      "登录成功跳转至首页"    ]  },  {    "precondition": "用户已登录，处于首页",    "operation_procedure": [      "1. 点击'退出'按钮"    ],    "expected_result": [      "返回注册/登录页面",      "用户会话终止"    ]  },  {    "precondition": "用户未注册，系统处于未登录状态",    "operation_procedure": [      "1. 访问系统首页",      "2. 输入有效用户名：valid_user",      "3. 输入无效密码：password",      "4. 点击'注册'按钮"    ],    "expected_result": [      "注册失败，提示'密码需包含大写字母、小写字母、数字和特殊字符'",      "页面停留在注册/登录页面"    ]  }]