@Test
public void whenCompareTwoHashMapsUsingEquals_thenSuccess() {
Map<String, String> asiaCapital1 = new HashMap<String, String>();
asiaCapital1.put("Japan", "Tokyo");
asiaCapital1.put("South Korea", "Seoul");
Map<String, String> asiaCapital2 = new HashMap<String, String>();
asiaCapital2.put("South Korea", "Seoul");
asiaCapital2.put("Japan", "Tokyo");
Map<String, String> asiaCapital3 = new HashMap<String, String>();
asiaCapital3.put("Japan", "Tokyo");
asiaCapital3.put("China", "Beijing");
assertTrue(asiaCapital1.equals(asiaCapital2));
assertFalse(asiaCapital1.equals(asiaCapital3));
}