import org.junit.Test;
import org.mockito.Mockito;
import static org.junit.Assert.assertEquals;
import static org.mockito.Mockito.*;
class Calculator {
public int add(int a, int b) {
return a + b;
}
}
public class CalculatorTest {
@Test
public void testAdd() {
Calculator mockCalculator = Mockito.mock(Calculator.class);
when(mockCalculator.add(2, 3)).thenReturn(5);
int result = mockCalculator.add(2, 3);
assertEquals(5, result);
verify(mockCalculator, times(1)).add(2, 3);
}
}
