OCMock - 如何期待nsarray的内容

Question

我想测试我在数据库中插入的值是否会发送回我的类的委托.

我试图模拟委托,并期望我用来填充数据库的数组.它失败是因为2 NSArray具有相同的内容但是是不同的对象.

我已经尝试在我的模型上实现isequal和hash方法,但没有成功.

这是错误日志:

'OCMockObject[NewsListViewController]: unexpected method invoked: service:<RSSService-0x4c25b90-324400011.636966: 0x4c25b90> didFinishParsingRSSWithItems:(
    description102362,
    description102362,
    description102362,
    description102362,
    description102362
) 
    expected:   service:<OCMAnyConstraint: 0x4c10f30> didFinishParsingRSSWithItems:(
    description102362,
    description102362,
    description102362,
    description102362,
    description102362
)'

我怎样才能做到这一点 ？

这是我的测试:

- (void) testServiceShouldNotLoadArticlesFromRSSFeedIfArticlesInDatabase {
    NSArray *fakeArticles = [TestUtils createArticles:5];
    [[DatabaseManager sharedManager] saveArticles:fakeArticles];

    RSSService *mockService = [OCMockObject partialMockForObject:service];
    id mockDelegate = [OCMockObject mockForClass:NewsListViewController.class];
    [[mockDelegate expect] service:[OCMArg any] didFinishParsingRSSWithItems:fakeArticles];
    mockService.delegate = mockDelegate;

    [mockService loadAllArticles];
    [mockService verify];
    [mockDelegate verify];
}

这是我正在测试的方法:

- (void) loadAllArticles {
    NSArray *articles = [self articlesFromDatabase];
    [self.delegate service:self didFinishParsingRSSWithItems:articles];
}

谢谢你的帮助,文森特

Answer 1

获得OCHamcrest!它提供了一系列与OCMock配合使用的匹配器,可以进行更清晰的测试.以下是您的期望:

[[mockDelegate expect] service:[OCMArg any] didFinishParsingRSSWithItems:contains(article1, article2, article3, article4, article5, nil)];
// or, if order is unpredictable
[[mockDelegate expect] service:[OCMArg any] didFinishParsingRSSWithItems:containsInAnyOrder(article1, article2, article3, article4, article5, nil)];

如果您确实不想出于某种原因使用hamcrest,可以在测试类中创建一个评估articles数组的方法.但我认为这有点难看:

- (void) testServiceShouldNotLoadArticlesFromRSSFeedIfArticlesInDatabase {
    NSArray *fakeArticles = [TestUtils createArticles:5];
    [[DatabaseManager sharedManager] saveArticles:fakeArticles];

    RSSService *mockService = [OCMockObject partialMockForObject:service];
    id mockDelegate = [OCMockObject mockForClass:NewsListViewController.class];
    [[[mockDelegate stub] andCall:@selector(service:verifyFiveArticles:) onObject:self] service:[OCMArg any] didFinishParsingRSSWithItems:[OCMArg any]];
    mockService.delegate = mockDelegate;

    [mockService loadAllArticles];
    [mockService verify];
    [mockDelegate verify];
}

-(void)service:(id)service verifyFiveArticles:(NSArray *)articles {
    STAssertEquals(5, [articles count]);
}