JUnit Assert with BigDecimal

Question

I want to use assert between 2 two decimal, I use this:

BigDecimal bd1 = new BigDecimal (1000);
BigDecimal bd2 = new BigDecimal (1000);
org.junit.Assert.assertSa         


        

Answer 1

The method assertSame tests that both are the same object. However, you have two objects which have the same value. To test this, you can use assertEquals.

However, you should be aware of some unexpected behavior when using assertEquals (which depends on the equals method) on BigDecimals. For example, new BigDecimal("100").divide(new BigDecimal("10.0")).equals(new BigDecimal("10")) evaluates to false because equals also looks at the scale of the BigDecimal instances.

In many circumstances it is better to compare BigDecimals by using the compareTo method:

assertTrue(bd1.compareTo(bd2) == 0);