如何使用OCMock初始化带有存根值的对象

Question

我是否存在init方法中使用的方法？

我班上的相关方法:

- (id)init
{
    self = [super init];
    if (self) {
        if (self.adConfigurationType == AdConfigurationTypeDouble) {
             [self configureForDoubleConfiguration];
        }
        else {
            [self configureForSingleConfiguration];
        }
    }
    return self;
}

- (AdConfigurationType)adConfigurationType
{
    if (adConfigurationType == NSNotFound) {
        if ((random()%2)==1) {
            adConfigurationType = AdConfigurationTypeSingle;
        }
        else {
            adConfigurationType = AdConfigurationTypeDouble;
        }
    }
    return adConfigurationType;
}

我的测试:

- (void)testDoubleConfigurationLayout
{
    id mockController = [OCMockObject mockForClass:[AdViewController class]];
    AdConfigurationType type = AdConfigurationTypeDouble;
    [[[mockController stub] andReturnValue:OCMOCK_VALUE(type)] adConfigurationType];

    id controller = [mockController init];

    STAssertNotNil([controller smallAdRight], @"Expected a value here");
    STAssertNotNil([controller smallAdRight], @"Expected a value here");
    STAssertNil([controller largeAd], @"Expected nil here");
}

我的结果:

因未捕获的异常'NSInternalInconsistencyException'而终止应用程序,原因:'OCMockObject [AdViewController]:调用了意外的方法:smallAdRight'

那么我将如何访问OCMockObject中的AdViewController？

Answer 1

如果使用该mockForClass:方法,则需要为模拟类中调用的每个方法提供存根实现.包括在第一次测试中使用[controller smallAdRight]调用它.

相反,您可以使用niceMockForClass:将忽略任何未模拟的消息的方法.

另一种方法是实例化你的AdViewController,然后使用该partialMockForObject:方法为它创建一个局部模拟.这样,控制器类的内部将完成工作的主要部分.

只是一个......你试图测试AdViewController或使用它的类吗？您似乎正在尝试模拟整个类,然后测试它是否仍然正常运行.如果您想测试AdViewController在注入某些值时表现如预期,那么您最好的选择很可能是partialMockForObject:方法:

- (void)testDoubleConfigurationLayout {     
  AdViewController *controller = [AdViewController alloc];
  id mock = [OCMockObject partialMockForObject:controller];
  AdConfigurationType type = AdConfigurationTypeDouble;
  [[[mock stub] andReturnValue:OCMOCK_VALUE(type)] adConfigurationType];

  // You'll want to call init after the object have been stubbed
  [controller init]

  STAssertNotNil([controller smallAdRight], @"Expected a value here");
  STAssertNotNil([controller smallAdRight], @"Expected a value here");
  STAssertNil([controller largeAd], @"Expected nil here");
}