Test case:
Native + Banner, Multi-size (240x400, 300x600), RTB creative (Square Image)
Expected:
Creative: Native (ContentAd) [240x400],
Banner [240x400, 300x600]
Presentation: P307
Native + Banner, Multi-size (240x400, 300x600), RTB creative (Square Image)
Expected:
Creative: Native (ContentAd) [240x400],
Banner [240x400, 300x600]
Presentation: P307