public void HeroExistsTestTrue()
{
//Arrange
var heroId = -1;
var hero = new Hero();
heroRepositoryMock.Setup(x => x.GetById(heroId))
.Returns(hero).Verifiable("should call getById of GenericRepository");
//Act
var isExists = heroService.HeroExists(heroId);
//Assert
Assert.IsTrue(isExists);
unitOfWorkMock.Verify();
heroRepositoryMock.Verify();
}