gistfile1.java

// Calculator.java
public class Calculator {
  public Calculator() {
    
  }
  
  public int add(int num1, int num2) {
    return num1 + num2;
  }
}

// CalculatorTest.java
public class CalculatorTest {
  public void testAdd() {
    Calculator calc = new Calculator();
    int result = calc.add(1, 2);
    int expectedValue = 3;
    assertEqual(result, expectedValue);
  }
}