/*
 * The test class ParenTest.
 * Only check `equals` and `hashCode`;
 * testing of higher-level functions all in `class ExprTest`.
 * 
 * @author ibarland@radford.edu
 * @license CC0; please just site URL, e.g. http://www.radford.edu/itec380/2018fall-ibarland/Homeworks/Project/T0-java/
 * @version 2018.Nov.16
 */
import static org.junit.Assert.*;
import org.junit.Test;

public class ParenTest {
    
    @Test
    public void equalsTest() {
      Paren e1 = new Paren( new Num(3) );
      Paren e2 = new Paren( new Num(3) );
      Paren e3 = new Paren( new Num(7) );
      assertEquals(e1,e1);
      assertEquals(e1,e2);
      assertFalse(  e1.equals(e3) );
      assertEquals( e1.hashCode(), e1.hashCode() );
      assertEquals( e1.hashCode(), e2.hashCode() );
      assertFalse(  e1.hashCode() == e3.hashCode() );
      }
    }