public void GetAllPersonsReturnsOkAndListOfAllPersonsWhenEverythingIsCorrect()
{
var persons = new List <Person>();
_personRepositoryMock.Setup(m => m.GetAll())
.Returns(persons);
var result = _sut.GetAllEntities() as OkObjectResult;
Assert.That(result, Is.Not.Null);
var value = result.Value as List <PersonReturnModel>;
Assert.That(value, Is.Not.Null);
_personRepositoryMock.Verify(m => m.GetAll(), Times.Once);
}