gistfile1.txt

- (void)testFeedMapperStrongParentChildClustersRelations {
    // given
    NSInteger expectedCountOfRootClusters = 10;
    
    // when
    [self.clusterIdsMapper mapServerResponse:self.regularServerResponse mappingContext:@{RDNMapperClustersTopicNameKey : RDNFirstTopicIdentifier}];
    NSArray *cachedClustersArray = [RDNCluster MR_findAll];
    
    // then
    NSMutableSet *clusterIdsSet = [NSMutableSet new];
    NSInteger currentNumberOfRootClusters = 0;
    for (RDNCluster *cluster in cachedClustersArray) {
        XCTAssertFalse([clusterIdsSet containsObject:cluster.clusterId], @"Cluster %@ duplicated", cluster.clusterId);
        [clusterIdsSet addObject:cluster.clusterId];
        if (cluster.childClusters.count > 0) {
            currentNumberOfRootClusters++;
        }
    }
    XCTAssertEqual(expectedCountOfRootClusters, currentNumberOfRootClusters, @"Wrong number of parent clusters");
}