How to avoid multiple asserts in a JUnit test?

Question

I have a DTO which I\'m populating from the request object, and the request object has many fields. I want to write a test to check if the populateDTO() method

Answer 1

Or you can do some workaround.

import junit.framework.Assert;
import org.junit.After;
import org.junit.AfterClass;
import org.junit.Before;
import org.junit.BeforeClass;
import org.junit.Test;

public class NewEmptyJUnitTest {

    public NewEmptyJUnitTest() {
    }

    @BeforeClass
    public static void setUpClass() throws Exception {
    }

    @AfterClass
    public static void tearDownClass() throws Exception {
    }

    @Before
    public void setUp() {
    }

    @After
    public void tearDown() {
    }


     @Test
     public void checkMultipleValues() {
         String errMessages = new String();

         try{
             this.checkProperty1("someActualResult", "someExpectedResult");
         } catch (Exception e){
             errMessages += e.getMessage();
         }

        try{
            this.checkProperty2("someActualResult", "someExpectedResult");
         } catch (Exception e){
             errMessages += e.getMessage();
         }

        try{
             this.checkProperty3("someActualResult", "someExpectedResult");
         } catch (Exception e){
             errMessages += e.getMessage();
         }

        Assert.assertTrue(errMessages, errMessages.isEmpty());


     }



     private boolean checkProperty1(String propertyValue, String expectedvalue) throws Exception{
         if(propertyValue == expectedvalue){
             return true;
         }else {
             throw new Exception("Property1 has value: " + propertyValue + ", expected: " + expectedvalue);
         }
     }

       private boolean checkProperty2(String propertyValue, String expectedvalue) throws Exception{
         if(propertyValue == expectedvalue){
             return true;
         }else {
             throw new Exception("Property2 has value: " + propertyValue + ", expected: " + expectedvalue);
         }
     }

         private boolean checkProperty3(String propertyValue, String expectedvalue) throws Exception{
         if(propertyValue == expectedvalue){
             return true;
         }else {
             throw new Exception("Property3 has value: " + propertyValue + ", expected: " + expectedvalue);
         }
     }  
}  

Maybe not the best approach and if overused than can confuse... but it is a possibility.