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.assertSame (bd1,bd2); 

but the JUnit log shows:

expected <1000> was not: <1000> 

Answer 1

The official junit solution to assert that two BigDecimal are matematically equal is to use hamcrest.

With java-hamcrest 2.0.0.0 we can use this syntax:

    // import static org.hamcrest.MatcherAssert.assertThat;     // import org.hamcrest.Matchers;      BigDecimal a = new BigDecimal("100")     BigDecimal b = new BigDecimal("100.00")     assertThat(a,  Matchers.comparesEqualTo(b)); 

Hamcrest 1.3 Quick Reference

Answer 2

assertSamechecks if both objects are the same instance. assertEqualschecks if the numbers are equal in value and scale, that means i.e. 1000 is not equal to 1000.00. If you want to compare only the numeric value, you should use compareTo() method from BigDecimal.

For example:

BigDecimal bd1 = new BigDecimal (1000.00); BigDecimal bd2 = new BigDecimal (1000); org.junit.Assert.assertTrue(bd1.compareTo(bd2) == 0);