assertion error while asserting arrayList contents in junit

Question

 @Test
    public void testAchievementsSize(){
        Player player = getPlayer();
        List<Achievement> playerAchievements = achievementManager.checkForPlayerAchievements(preparePlayerStatistics(player));
        assertEquals(3,playerAchievements.size());
        assertThat(playerAchievements, containsInAnyOrder(new BruiserAward(),new SharpShooterAward(),new FastKillerAward()));

    }

causing the below error:

java.lang.AssertionError: 
Expected: iterable over [<Bruiser>, <Sharp shooter>, <Fast Killer>] in any order
     but: Not matched: <Bruiser>

    at org.hamcrest.MatcherAssert.assertThat(MatcherAssert.java:20)
    at org.junit.Assert.assertThat(Assert.java:956)
    at org.junit.Assert.assertThat(Assert.java:923)

Hashcode and equals is overridden like below:

@Override
public int hashCode() {
    return this.getName().hashCode();
}

@Override
public boolean equals(Object obj) {

if(obj != null &&  obj instanceof Achievement){
    Achievement achievement = (Achievement) obj;
    achievement.getName().equals(this.getName());
}
return false;
}

Have tried solutions ArrayList equality JUnit testing present here using assertTrue and assertArrayEquals but no luck

Am I missing anything?

Update:

Tried below:

@Test
    public void testAchievementsSize(){
        Player player = getPlayer();
        List<Achievement> playerAchievements = achievementManager.checkForPlayerAchievements(preparePlayerStatistics(player));
        assertEquals(3,playerAchievements.size());
        assertArrayEquals(playerAchievements.toArray(new Achievement[playerAchievements.size()]),
                new Achievement[]{new BruiserAward(),new SharpShooterAward(),new FastKillerAward()} );

    }

causing error:

arrays first differed at element [0]; expected: com.techdisqus.achievement.BruiserAward<Bruiser> but was: com.techdisqus.achievement.BruiserAward<Bruiser>
Expected :com.techdisqus.achievement.BruiserAward<Bruiser> 
Actual   :com.techdisqus.achievement.BruiserAward<Bruiser>

and

   @Test
    public void testAchievementsSize(){
        Player player = getPlayer();
        List<Achievement> playerAchievements = achievementManager.checkForPlayerAchievements(preparePlayerStatistics(player));
        assertEquals(3,playerAchievements.size());
        assertArrayEquals(playerAchievements.toArray(),
                new Achievement[]{new BruiserAward(),new SharpShooterAward(),new FastKillerAward()} );

    }

causing

arrays first differed at element [0]; expected: com.techdisqus.achievement.BruiserAward<Bruiser> but was: com.techdisqus.achievement.BruiserAward<Bruiser>
Expected :com.techdisqus.achievement.BruiserAward<Bruiser> 
Actual   :com.techdisqus.achievement.BruiserAward<Bruiser>

The deleted answer seems correct. Check the equals method of the BruserAward class. — DwB
– DwB, Commented Dec 21, 2018 at 20:24

DwB · Accepted Answer · 2018-12-21 20:27:11Z

2

As is often the case, the answer is Pay attention to the code you write.

Look at the equals method you included in your question. Answer this question: What value is returned when this is true obj != null && obj instanceof Achievement.

Once you answer that question, fix the problem.

answered Dec 21, 2018 at 20:27

DwB

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1 Comment

Shiva Over a year ago

Silly me, this miss cost me few hours.. but thank you for showing it to me.

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