CODEWITHSUNDEEP
javaeclipseunit-testingtestingjunit
maximus
maximus

Reputation: 11524

JUnit - assertFalse does not except == Operator?

I am currently writing junit tests for my program.

One of my tests updated an existing product. Here`s the code:

@Test
public void testUpdate(){
    Produkt p = new Produkt(1, "apple", "food", true, 2.00, false, true);
    assertFalse(handler.updateProdukt(p)==0);;  
}

but eclispe always says:

The operator == is undefined for the argument type(s) void, int

if I write null nothing changes...

Is there a possibility to test whether the updatedProdukt is null or not?

I really appreaciate your answer!!!

Upvotes: 0

Views: 353

Answers (5)

Yogendra Joshi
Yogendra Joshi

Reputation: 228

Try following code if returns int or Strings or Long value.

assertFalse(handler.updateProdukt(p).equals(0));

Upvotes: 0

Kalpak Gadre
Kalpak Gadre

Reputation: 6475

What does your updateProdukt() return? Isn't is returning void?

You need to return something from updateProdukt() to be able to use == operator.

Upvotes: 0

Reimeus
Reimeus

Reputation: 159754

Its more than like that 

handler.updateProdukt(p)

does not return any value, you need to change the signature to

int handler.updateProdukt(p)

Upvotes: 1

Thilo
Thilo

Reputation: 262464

Your method is void. It returns nothing and thus the return value cannot be used in assignments or expressions.

Has nothing to do with jUnit or Eclipse.

Maybe you want something like this:

handler.updateProdukt(p);
assertEquals("has been updated", theNewExpectedValue,  p.getSomeValue());

Upvotes: 3

dogbane
dogbane

Reputation: 274522

It's because your updateProdukt method returns void. Change it to return something e.g. a boolean or an int, then you can use it in an assert.

The question is: what is updateProdukt doing and what do you wish to test? If it is updating the specified product then you should return a boolean (true or false) to indicate whether the specified product was updated successfully. Alternatively, return the Product which was updated or null if no product was updated.

Upvotes: 0

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