RestKit RKMappingTest JSON 数组

我正在使用 RestKit ~> 0.20.3 和 RestKit/Testing ~> 0.20.3。这是我的映射的一个示例：

RKObjectMapping *mapping = [RKObjectMapping mappingForClass:[PlayerVO class]];
[mapping addAttributeMappingsFromArray:@[@"firstName", @"middeName", @"lastName", @"dob", @"sex"]];

这是我的模拟数据：

NSDictionary *data = @{@"players": @[@{@"firstName": @"Ahmed", @"middleName": @"Ahmed", @"lastName": @"Ahmed", @"dob": @"100", @"sex": @"m"}]};

这是我的mappingTest:

RKMappingTest *mappingTest = [RKMappingTest testForMapping:mapping sourceObject:data destinationObject:nil];

最后我的expectation:

RKPropertyMappingTestExpectation *expectation = [RKPropertyMappingTestExpectation expectationWithSourceKeyPath:@"players.firstName" destinationKeyPath:@"firstName" evaluationBlock:^BOOL(RKPropertyMappingTestExpectation *expectation, RKPropertyMapping *mapping, id mappedValue, NSError *__autoreleasing *error) {
    BOOL expect = [mappedValue length] > 0;

    XCTAssertTrue(expect);

    return expect;
}];

[mappingTest addExpectation:expectation];

XCTAssertTrue([mappingTest evaluate]);
XCTAssertNoThrow([mappingTest verify]);

所以这个测试失败了，因为我似乎没有办法指定要遵循的关键路径data是一个数组。这是我得到的错误：

testPlayerServiceGetPlayers] : (([mappingTest verify]) does not throw) failed: throwing "0x8e7d770: failed with error: (null)
RKMappingTest Expectations: (
    "map 'players.firstName' to 'firstName' satisfying evaluation block"
)
Events: (
) during mapping from {
    players =     (
                {
            dob = 100;
            firstName = Ahmed;
            lastName = Ahmed;
            middleName = Ahmed;
            sex = m;
        }
    );
} to (null) with mapping <RKObjectMapping:0x8e6aad0 objectClass=PlayerVO propertyMappings=(
    "<RKAttributeMapping: 0x8e6b880 firstName => firstName>",
    "<RKAttributeMapping: 0x8e61df0 middeName => middeName>",
    "<RKAttributeMapping: 0x8e2f580 lastName => lastName>",
    "<RKAttributeMapping: 0x8e67a60 dob => dob>",
    "<RKAttributeMapping: 0x8e2c120 sex => sex>"
)>"

如果我将数据更改为：

NSDictionary *data = @{@"firstName": @"Ahmed", @"middleName": @"Naseer", @"lastName": @"Nuaman", @"dob": @"524534400", @"sex": @"m"};

And the expectation's expectationWithSourceKeyPath to @"firstName"，测试通过。因此，这让我相信这个问题显然与设定关键路径有关。现在在我的应用程序中使用：

RKResponseDescriptor *responseDescriptor = [RKResponseDescriptor responseDescriptorWithMapping:mapping method:RKRequestMethodAny pathPattern:nil keyPath:@"players" statusCodes:statusCodes];

但是我找不到设置的方法keyPath for a RKMappingTest or RKPropertyMappingTestExpectation，关于如何实现这一目标有什么想法吗？

Update

所以我浏览了一下RKMappingTest.h并找到了rootKeyPath。我设置如下：

mappingTest.rootKeyPath = @"players";

并且仍然遇到问题mappedValue in the RKPropertyMappingTestExpectation。所以我也将我的数据更改为：

NSDictionary *data = @{@"players": @{@"firstName": @"Ahmed", @"middleName": @"Ahmed", @"lastName": @"Ahmed", @"dob": @"100", @"sex": @"m"}};

现在我可以看到mappedValue现在设置为Ahmed并更新了RKPropertyMappingTestExpectation至以下内容：

RKPropertyMappingTestExpectation *expectation = [RKPropertyMappingTestExpectation expectationWithSourceKeyPath:@"firstName" destinationKeyPath:@"firstName" evaluationBlock:^BOOL(RKPropertyMappingTestExpectation *expectation, RKPropertyMapping *mapping, id mappedValue, NSError *__autoreleasing *error) {
    return [mappedValue isEqualToString:@"Ahmed"];
}];

但这使用的是对象而不是数组。还有更多建议吗？

我想我找到了比“你测试错误”更好的答案。您应该能够通过将正在测试的映射包装在另一个映射中来正确测试。

// Data (in your case, you've used a hard coded string here)
id fixtureData = [RKTestFixture parsedObjectWithContentsOfFixture:@"fixture.json"];

// Setup
RKObjectMapping* wrapperMapping = [RKObjectMapping mappingForClass:[NSMutableDictionary class]];
RKObjectMapping *mappingToTest = [RKObjectMapping mappingForClass:[PlayerVO class]];
[mappingToTest addAttributeMappingsFromArray:@[@"firstName", @"middeName", @"lastName", @"dob", @"sex"]];
[wrapperMapping addRelationshipMappingWithSourceKeyPath:@"players" mapping:mappingToTest];
RKMappingTest* test = [RKMappingTest testForMapping:wrapperMapping sourceObject:fixtureData destinationObject:nil];

// If you're dealing with a managed object mapping, you'll need these:
// I usually set up a single store in the "+(void)setUp" method and reset it
// on each test in the "-(void)setUp" method. (note one method is class, one
// is instance).
//test.managedObjectContext = managedObjectStore.persistentStoreManagedObjectContext;
//test.mappingOperationDataSource = [[RKManagedObjectMappingOperationDataSource alloc] initWithManagedObjectContext:managedObjectStore.persistentStoreManagedObjectContext cache:[RKFetchRequestManagedObjectCache new]];

// Expectations
[test addExpectation:[RKPropertyMappingTestExpectation expectationWithSourceKeyPath:@"..." destinationKeyPath:@"..."]];
// Add others as you see fit (these will work for the mappingToTest mapping).

// Evaluate
XCTAssert([test evaluate]);
NSDictionary* result = test.destinationObject;
// You can verify counts on the result and any other objects.
// If you have variables in other structures you want tracked, you can expand
// on the wrapper mapping. i.e. If your data contained a "teamName" at the
// same level as your array of "players", you could add a mapping from
// "teamName" to an arbitrary keyPath for your dictionary then access it in the
// result variable.

这对我有用。我认为说不应该测试集合映射是短视的。您可能有一个设计不佳的 REST API，需要这样做，或者您想要验证在映射发生时是否正确设置的托管对象之间的复杂交互。