public void GetSnapshotEventWithIdDoesNotExistThrowsTest()
{
_repositoryMock
.Setup(x => x.GetSingleOrDefault(It.IsAny <int>()))
.Returns((Event)null);
var exception = Assert.Throws <BusinessException>(() =>
_eventAccessor.GetSnapshot(1));
_repositoryMock.Verify(x => x.GetSingleOrDefault(It.Is <int>(y => y == 1)), Times.Once);
Assert.Equal("Event with id 1 doesn't exist", exception.Message);
}