How to test int equality with ShouldBe

Question

I am running c# tests using ShouldBe and I have this code:

int x = 3;
int y = 3;
x.ShouldBeSameAs(y);

Problem is it throws exception:

An exception of type 'Shouldly.ShouldAssertException' occurred in Shouldly.dll but was not handled in user code

Additional information: x

should be same as

3

but was

3

How can I test equality of to integers with ShouldBe?

I don't know what `shouldly.dll` is, but it seems to be comparing references. And since those references are not the same (x is not the same object as y) your assert fails. A quick look at the docs makes me wonder why you don;t use x.ShouldBe(y) in order to compare values. — oerkelens, Jul 24 '17 at 07:48
To test if it is really reference equality that is being tested for, you could try `int value = 3; object boxX = value; object boxY = boxX; boxX.ShouldBeSameAs(boxY);`. Here `boxX` and `boxY` are reference to the same box (instance of a boxed value). — Jeppe Stig Nielsen, Jul 24 '17 at 08:27
@royalTS: Shouldly has nicer messages when condition is not satisfied, so it makes it easier to figure out what went wrong. — Uros, Jul 24 '17 at 14:48

score 9 · Accepted Answer · edited Jul 24 '17 at 07:49

9

According to the documentation ShouldBeSameAs uses reference equality.

Use ShouldBe.

See documentation here.

edited Jul 24 '17 at 07:49

Joey

answered Jul 24 '17 at 07:48

jProg2015

score 4 · Answer 2 · answered Jul 24 '17 at 07:48

4

Just use ShouldBe:

x.ShouldBe(y);

answered Jul 24 '17 at 07:48

Joey

2 Answers2