Question

我正在尝试实施修补程序，如文档和此SO帖子所示：Typhoon: How to get an instance conforming to a protocol for production, and another for tests?。

我正在使用块程序集并得到错误：

[WPAnalyticsClientImplementation key]: unrecognized selector sent to instance 0x9eb01d0

在TyphoonPatcher.m: 46。

我的类实现没有响应这个选择器。应该是？密钥如何与修补过程相关？

context(@"when the controller does something", ^{

        it(@"should work", ^{
            // This is an application test, so the factory has already been set in the app delegate.
            TyphoonComponentFactory *factory = [TyphoonComponentFactory defaultFactory];

            TyphoonPatcher* patcher = [[TyphoonPatcher alloc] init];
            [patcher patchDefinition:[factory componentForType:@protocol(WPAnalyticsClient)] withObject:^id
             {
                 id mockAnalytics = [KWMock mockForProtocol:@protocol(WPAnalyticsClient)];
                 [[mockAnalytics should] conformToProtocol:@protocol(WPAnalyticsClient)];
                 [mockAnalytics stub:@selector(getSomeString) andReturn:theValue(@"fake implementation")];

                 return mockAnalytics;
             }];

            [factory attachPostProcessor:patcher];

            // The default factory should now return the mocked client.
            id <WPAnalyticsClient> client = [factory componentForType:@protocol(WPAnalyticsClient)];

            NSLog(@"conforms: %i", [client conformsToProtocol:@protocol(WPAnalyticsClient)]);
            NSString *actualValue = [client getSomeString];
            NSLog(@"someString: %@", actualValue);
            [[theValue([actualValue isEqualToString:@"fake implementation"]) should] equal:theValue(YES)];
        });
    });

AppDelegate.m

TyphoonComponentFactory *factory = ([[TyphoonBlockComponentFactory alloc] initWithAssembly:[WPAssembly assembly]]);
[factory makeDefault];

Answer 1

上面显示的修补代码不是很正确，而不是修补实例，修补定义。

修补程序的工作方式是使用TyphoonComponentFactoryPostProcessor来改变定义。

所以不要这样做：

[patcher patchDefinition:[factory componentForType:@protocol(WPAnalyticsClient)] 
    withObject:^id. . .

你应该这样做：

MyAssemblyType* assembly = [MyAssemblyType assembly];
TyphoonComponentFactory* factory = [TyphoonBlockComponentFactory factoryWithAssembly:assembly];   
[patcher patchDefinition:[assembly myComponentToPatch] withObject . . . ];

修补默认程序集::

因为您正在修补默认程序集，而不是创建新程序集，所以必须按如下方式传递定义：

[patcher patchDefinition:[[MyAssemblyType assembly] myAnalticsService] withObject. . . ]

组件密钥与装配接口

假设你有一个组件如下：

- (id) myAnalyticsService 
{
    return [TyphoonDefinitionWithClass. . . . etc]; 
}

。。。然后你的组件的关键是 @“myAnalyticsService”，所以你也可以使用：

[patcher patchDefinitionWithKey:@"myAnalyticsService" . . ];

构建时与运行时的程序集接口

这是一个可能引起一些混淆的概念：

装配界面有两个用途。在构建时它返回TyphoonDefinition，而在运行时它返回定义中定义的实际类型。所以。。

在构建时，我们可以定义组件。
在运行时，我们可以使用汇编界面上的方法名解析组件

示例：

MyAssemblyType* assembly = (MyAssemblyType*) [TyphoonComponentFactory defaultFactory];
//Use the assembly interface instead of a 'magic string'
AnalyticsService* service = [assembly analyticsService];

这是很多信息。。。如果有些事情仍然不清楚，请告诉我。

Typhoon：如何修补与组件键相关的定义？

1 个答案: