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

You can use compare(-,-)(Mostly used for sorting purpose) of Comparator interface to implement custom comparison between objects as your requirement. Or use equals() method to compare objects.

Answer 2

Here is the solution I eventually ended up using which worked perfectly for unit testing purposes.

for(Map.Entry<Integer, Question> entry : questionMap.entrySet()) {
    assertReflectionEquals(entry.getValue(), expectedQuestionMap.get(entry.getKey()), ReflectionComparatorMode.LENIENT_ORDER);
}

This involves invoking assertReflectionEquals() from the unitils package.

<dependency>
    <groupId>org.unitils</groupId>
    <artifactId>unitils-core</artifactId>
    <version>3.3</version>
    <scope>test</scope>
</dependency>

Answer 3

If your Question class implements equals then you can just do

assertEquals(expectedMap, hashMap);

assertTrue(expectedMap.equals(hashMap));

The Map interface specifies that two Maps are equal if they contain equal elements for equal keys.

Answer 4

Using Guava you can do:

assertTrue(Maps.difference(expected, actual).areEqual());

Answer 5

if your bean class has a field which will be unique for every object you create then you should override equals and hashcode method in ur bean class with that field

Answer 6

I found the keySet method of the map class useful

        assertEquals(map1.keySet(), map2.keySet());