"""
缓存功能测试 - TDD Red阶段

测试缓存功能的各种场景。
"""

import pytest
import allure


@allure.epic("测试基础设施")
@allure.feature("缓存功能测试 - TDD Red阶段")
class TestCache:
    """缓存功能测试类 - TDD Red阶段（期望失败）"""

    @allure.title("测试缓存基本操作 - TDD Red阶段")
    @allure.description("验证缓存的基本读写操作 - 期望失败(Red)")
    @allure.severity(allure.severity_level.CRITICAL)
    @pytest.mark.smoke
    def test_cache_basic_operations(self) -> None:
        """
        TDD Red阶段: 测试缓存基本操作
        
        预期结果:
            - 可以写入缓存
            - 可以读取缓存
            - 可以删除缓存
        """
        try:
            from core.cache import Cache
            
            with allure.step("Step 1: 创建缓存实例"):
                cache = Cache()
                allure.attach("缓存实例创建成功", "步骤1", allure.attachment_type.TEXT)

            with allure.step("Step 2: 写入缓存"):
                cache.set("test_key", "test_value")
                allure.attach("数据已写入缓存", "步骤2", allure.attachment_type.TEXT)

            with allure.step("Step 3: 读取缓存"):
                value = cache.get("test_key")
                allure.attach(f"读取值: {value}", "步骤3", allure.attachment_type.TEXT)
                
                if value == "test_value":
                    allure.attach("✅ 缓存读写正常", "测试结果", allure.attachment_type.TEXT)
                    assert True, "TDD Green阶段: 缓存基本操作正常"
                else:
                    allure.attach(f"❌ 缓存值不匹配: {value}", "测试结果", allure.attachment_type.TEXT)
                    assert False, "缓存值不匹配"
                    
        except ImportError as e:
            allure.attach(f"❌ Cache不存在 - 符合Red阶段预期: {str(e)}", "测试结果", allure.attachment_type.TEXT)
            assert False, "TDD Red阶段: 期望测试失败，Cache尚未实现"
        except Exception as e:
            allure.attach(f"❌ 缓存操作失败 - 符合Red阶段预期: {str(e)}", "测试结果", allure.attachment_type.TEXT)
            assert False, "TDD Red阶段: 期望测试失败，缓存功能尚未实现"

    @allure.title("测试缓存过期 - TDD Red阶段")
    @allure.description("验证缓存过期功能 - 期望失败(Red)")
    @allure.severity(allure.severity_level.CRITICAL)
    @pytest.mark.smoke
    def test_cache_expiration(self) -> None:
        """
        TDD Red阶段: 测试缓存过期
        
        预期结果:
            - 缓存数据在指定时间后过期
            - 过期后无法读取
        """
        try:
            from core.cache import Cache
            import time
            
            with allure.step("Step 1: 创建缓存实例"):
                cache = Cache()

            with allure.step("Step 2: 写入带过期时间的缓存"):
                cache.set("expire_key", "expire_value", ttl=1)  # 1秒过期
                allure.attach("数据已写入，TTL=1秒", "步骤2", allure.attachment_type.TEXT)

            with allure.step("Step 3: 立即读取"):
                value = cache.get("expire_key")
                if value == "expire_value":
                    allure.attach("✅ 立即读取成功", "步骤3", allure.attachment_type.TEXT)
                else:
                    allure.attach("❌ 立即读取失败", "步骤3", allure.attachment_type.TEXT)
                    assert False, "立即读取失败"

            with allure.step("Step 4: 等待过期后读取"):
                time.sleep(1.5)  # 等待过期
                value = cache.get("expire_key")
                
                if value is None:
                    allure.attach("✅ 缓存过期正常", "测试结果", allure.attachment_type.TEXT)
                    assert True, "TDD Green阶段: 缓存过期功能正常"
                else:
                    allure.attach(f"❌ 缓存未过期: {value}", "测试结果", allure.attachment_type.TEXT)
                    assert False, "缓存未正确过期"
                    
        except ImportError as e:
            allure.attach(f"❌ Cache不存在 - 符合Red阶段预期: {str(e)}", "测试结果", allure.attachment_type.TEXT)
            assert False, "TDD Red阶段: 期望测试失败，Cache尚未实现"
        except Exception as e:
            allure.attach(f"❌ 缓存过期失败 - 符合Red阶段预期: {str(e)}", "测试结果", allure.attachment_type.TEXT)
            assert False, "TDD Red阶段: 期望测试失败，缓存过期功能尚未实现"

    @allure.title("测试缓存清理 - TDD Red阶段")
    @allure.description("验证缓存清理功能 - 期望失败(Red)")
    @allure.severity(allure.severity_level.NORMAL)
    @pytest.mark.regression
    def test_cache_clear(self) -> None:
        """
        TDD Red阶段: 测试缓存清理
        
        预期结果:
            - 可以清理所有缓存
            - 清理后无法读取
        """
        try:
            from core.cache import Cache
            
            with allure.step("Step 1: 创建缓存实例并写入数据"):
                cache = Cache()
                cache.set("key1", "value1")
                cache.set("key2", "value2")
                allure.attach("数据已写入", "步骤1", allure.attachment_type.TEXT)

            with allure.step("Step 2: 清理缓存"):
                cache.clear()
                allure.attach("缓存已清理", "步骤2", allure.attachment_type.TEXT)

            with allure.step("Step 3: 验证缓存已清理"):
                value1 = cache.get("key1")
                value2 = cache.get("key2")
                
                if value1 is None and value2 is None:
                    allure.attach("✅ 缓存清理正常", "测试结果", allure.attachment_type.TEXT)
                    assert True, "TDD Green阶段: 缓存清理功能正常"
                else:
                    allure.attach(f"❌ 缓存未清理: {value1}, {value2}", "测试结果", allure.attachment_type.TEXT)
                    assert False, "缓存未正确清理"
                    
        except ImportError as e:
            allure.attach(f"❌ Cache不存在 - 符合Red阶段预期: {str(e)}", "测试结果", allure.attachment_type.TEXT)
            assert False, "TDD Red阶段: 期望测试失败，Cache尚未实现"
        except Exception as e:
            allure.attach(f"❌ 缓存清理失败 - 符合Red阶段预期: {str(e)}", "测试结果", allure.attachment_type.TEXT)
            assert False, "TDD Red阶段: 期望测试失败，缓存清理功能尚未实现"

    @allure.title("测试缓存统计 - TDD Red阶段")
    @allure.description("验证缓存统计功能 - 期望失败(Red)")
    @allure.severity(allure.severity_level.NORMAL)
    @pytest.mark.regression
    def test_cache_stats(self) -> None:
        """
        TDD Red阶段: 测试缓存统计
        
        预期结果:
            - 可以获取缓存统计信息
            - 统计信息准确
        """
        try:
            from core.cache import Cache
            
            with allure.step("Step 1: 创建缓存实例"):
                cache = Cache()

            with allure.step("Step 2: 写入数据"):
                cache.set("key1", "value1")
                cache.set("key2", "value2")
                cache.set("key3", "value3")

            with allure.step("Step 3: 获取统计信息"):
                stats = cache.get_stats()
                allure.attach(f"统计信息: {stats}", "步骤3", allure.attachment_type.TEXT)
                
                if stats.get("size") == 3:
                    allure.attach("✅ 缓存统计正常", "测试结果", allure.attachment_type.TEXT)
                    assert True, "TDD Green阶段: 缓存统计功能正常"
                else:
                    allure.attach(f"❌ 统计信息不正确: {stats}", "测试结果", allure.attachment_type.TEXT)
                    assert False, "缓存统计不正确"
                    
        except ImportError as e:
            allure.attach(f"❌ Cache不存在 - 符合Red阶段预期: {str(e)}", "测试结果", allure.attachment_type.TEXT)
            assert False, "TDD Red阶段: 期望测试失败，Cache尚未实现"
        except Exception as e:
            allure.attach(f"❌ 缓存统计失败 - 符合Red阶段预期: {str(e)}", "测试结果", allure.attachment_type.TEXT)
            assert False, "TDD Red阶段: 期望测试失败，缓存统计功能尚未实现"