- (void)testApiClass {
    //Check object
    NSString* classKey = @"Api";
    id obj = NSClassFromString(classKey);
    STAssertNotNil(obj, [NSString stringWithFormat:@"Model '%@' not found.", classKey]);
    //Check properties
    NSArray* properties =
    @[
        @"performSyncRequestWithUri::",
        @"performAsyncRequestWithUri:::",
    ];
    for (NSString* property in properties) {
        SEL propertySel = NSSelectorFromString(property);
        BOOL isRespondsToSel = [obj respondsToSelector:propertySel];
        STAssertTrue(isRespondsToSel, [NSString stringWithFormat:@"Property '%@' not found on object of class name '%@'", property, [obj class]]);
    }
}


@interface Api : NSObject

- (NSDictionary*)performSyncRequestWithUri:(NSString *)requestUri params:(NSDictionary *)params;
- (void)performAsyncRequestWithUri:(NSString *)requestUri params:(NSDictionary *)params completionHandler:(void (^)(NSDictionary *, NSError *))completionBlock;

@end

SEL selectors[] = {
    @selector(performSyncRequestWithUri:params:),
    @selector(performAsyncRequestWithUri:params:completionHandler:),
    NULL
};

for (size_t i = 0; selectors[i]; ++i) {
    SEL selector = selectors[i];
    BOOL respondsToSelector = [obj respondsToSelector:selector];
    STAssertTrue(respondsToSelector, [NSString stringWithFormat:
        @"Object %@ doesn't respond to selector %s",
        obj, sel_getName(selector)]);
}