How to check nullable int against nullable enum in unit test assertion?

Question

Writing some integration tests we want to compare values read from the DB (int) against the object being used (enum field on a DTO).

So conceptually dto.EnumValue.Should().Be((MyEnum)expectedIntValue)

However these are both nullable. I know how to compare two nullable values of the same type but I can't see an obvious way to compare nullable int against nullable enum.

So far we ended up with:

if(dto.EnumValue == null)
 expectedValue.Should().BeNull();
else
 dto.EnumValue.Should().Be((MyEnum)expectedIntValue.Value);

I feel there is surely a way to do this better, adding logic to unit test expectations is not great?

Answer 1

You need to convert one value to match the datatype of the other. So either:

enumValue.Should().Be((Foo?)intValue);

Or:

((int?)enumValue).Should().Be(intValue);