package ru.stqa.pft.sandbox;


import org.testng.Assert;
import org.testng.annotations.Test;

public class SquareTests {

  @Test
  public void testArea(){
    Square s = new Square(5);
    Assert.assertEquals(s.area(), 25.0);

  }
}

package ru.stqa.pft.sandbox;


import org.testng.Assert;
import org.testng.annotations.Test;

public class SquareTests {

  @Test
  public void testArea(){
    Square s = new Square(5);
    Assert.assertEquals(s.area(), 5.0);

  }
}

break the test to test Jenkins