What JUnit command i should use to check that, the expected is not equal to the actual.

Question

So the question is: what JUnit command i should use to check that the expected is not equal to the actual. For example i use assertEquals like this

assertEquals(tr1.detectTriangle(), tr1.TR_EQUILATERAL);

So here expected variable is 2 but actual is 1 and test fails. What command i should use to make this test passed?

assertNotEquals or assertFalse should do it. If the method throws an exception you should add expected value to the @Test annotation. — duffymo, Jul 09 '18 at 13:56
Duplicate of https://stackoverflow.com/questions/1096650/why-doesnt-junit-provide-assertnotequals-methods — olikaf, Jul 09 '18 at 13:57

GhostCat · Accepted Answer · 2018-07-10T04:54:12.143

5

Of course, there is the simple assertNotEquals(), but I typically suggest to use the one and only assert you really need: assertThat!

assertThat(actual, is(expected));

or, in your case:

assertThat(actual, not(expected));

Where is() and not() are hamcrest matchers that do exactly what their names imply.

edited Jul 10 '18 at 04:54

answered Jul 09 '18 at 13:56

GhostCat

Thanks a lot, that helped me! – Nikita Kozlovsky Jul 09 '18 at 14:02
@NikitaKozlovsky then please mark it as "correct answer" and also concider an upvote. – Timothy Truckle Jul 09 '18 at 14:04
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@TimothyTruckle He cant upvote ... just 1 rep, the poor soul. But I am fine with an accept ;-) – GhostCat Jul 09 '18 at 14:05
1

@GhostCat, thank you for pointing this out. I've been so engrained in my old assert habits that I've never used it. Shame on me! – duffymo Jul 09 '18 at 15:44
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@GhostCat, please, fix a misprint "expecred" -> "expected". I tried to fix, but at least 6 changed chars are accepted by stackoverflow :) – Dmytro Maslenko Jul 09 '18 at 22:14

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