JUnit which is recommended assertTrue() or assertEquals() for String?

Question

My code is like below

@Test public void testMyMethod(){ MyClass mc = new MyClass(); String exeVal="sometext some text"; String x=mc.exampleMethod(); // Assertion type 1 Assert.assertEquals(exeVal,x); //Assertion Type 2 Assert.assertTrue(exeVal.equals(x)); }

I want to know which is the best approach.

It's the same. assertEquals() invokes the equals() method on given objects. Use whatever you prefer. — Bartek Maraszek
– Bartek Maraszek, Commented Jul 18, 2014 at 9:47
@BartekMaraszek As assertEquals will give you clearer feedback, I'd say it is better to use that. — Mark Rotteveel
– Mark Rotteveel, Commented Jul 18, 2014 at 9:49

Andrew Stubbs · Accepted Answer · 2014-07-18 09:49:25Z

Type 1 is preferred because of the assertion message you will receive when they do not match.

org.junit.ComparisonFailure: expected: <[foo]> but was: <[bar]>

vs

java.lang.AssertionError

Ravinda Lakshan · Accepted Answer · 2019-11-13 08:19:33Z

Type 1 is preferred because of the following reasons.

It gives you a better error message.

ex:- "expected [3] but found [4]" . The second approach will evaluate the condition and will give you a message like "expected [true] but found [false]" and the user will not get the values evaluated.

AssertEquals is null safe and assertTrue isn't

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