JUnit testing for IO

Question

I am new here and new to junit testing. I have a class with two methods and I want to write unit tests for it. I am not sure how to start I read some basic tutorials but I am no

Answer 1

Just to give you a head start

Create your test class that looks something like this

import junit.framework.TestCase;

public class CreateCSVTest extends TestCase {

    CreateCSV csv = new CreateCSV();

    public void testCreateCsv() {
        csv.createCSV("Pass an arraylist of type Signal", "pass a file");
        assertEquals("add your asserts here", "add your asserts here");
    }

}