How do I assert that two HashMap with Javabean values are equal?

Question

I have two HashMap maps that I would like to compare. Question in this case is a Javabean I have written.

How do I ass

Answer 1

Too compare maps ,in your particular case :

1)Check the size of the map if its equal

Then use

    `assertTrue(expectedMap.equals(hashMap));` 

In your Question bean you have to override the equals and hashcode method.

Answer 2

Here is how HashMap equal method works:

public boolean equals(Object o) {
..........
..........
 Map<K,V> m = (Map<K,V>) o;
..........
    Iterator<Entry<K,V>> i = entrySet().iterator();
    while (i.hasNext()) {
    Entry<K,V> e = i.next();
            K key = e.getKey();
            V value = e.getValue();
            if (value == null) {
                if (!(m.get(key)==null && m.containsKey(key)))
                    return false;
            } else {
                if (!value.equals(m.get(key)))
                    return false;
            }
...........
...........
 return true;
}

Now since, it is invoking the equals method of Value objects, that means Value objects for a given key should be same (as governed by equals method).

Above will help you to understand in what case your JUnit will pass. In your JUnit method you can use:

public static void assertEquals(java.lang.Object expected,
                                java.lang.Object actual)

See link for more details.

Cheers !!