public void WithTapAction_should_return_CardActionAssertions() { var tap = new CardAction(); var thumbnailCards = ThumbnailCardTestData.CreateThumbnailCardSetWithOneCardThatHasSetProperties(tap: tap); var sut = new ThumbnailCardSetAssertions(thumbnailCards); sut.WithTapAction().Should().BeAssignableTo <CardActionSetAssertions>().And.NotBeNull(); }