Create a test for different inputs and exceptions

TestNGParameterisedTest.java

import org.testng.annotations.DataProvider;
import org.testng.annotations.Test;

import static org.testng.Assert.assertEquals;
import static org.testng.Assert.assertTrue;

public class TestNGParameterisedTest {

    @Test(dataProvider = "parseIntInputs")
    public void testInt(String input, Object expected){
        try{
            Integer actual = Integer.parseInt(input);
            assertEquals(actual, expected, "not equal");
        }catch(Exception actualException){
            assertTrue(expected instanceof Class, "wrong setup, expected exception class must be defined");
            assertEquals(actualException.getClass(), expected, "wrong exception thrown");
        }
    }
    
    @DataProvider(name = "parseIntInputs")
    public Object[][] parseIntInputs(){
        return new Object[][]{
             {null, NumberFormatException.class}
            ,{"1", 1}
            ,{"-1", -1}
            ,{"-1.5", NumberFormatException.class}
            ,{"1L", NumberFormatException.class}
            ,{"4", 4}
        };
    }
}