@Test
public void testSqrt() {
Double x = 81.0;
String operation = "sqrt";
Double result = 9.0;
Calculation object = new Calculation();
object.calculate(x, operation);
assertEquals(result, object.getTotal());
}
@Test
public void testAdd() {
Double x = 4.0;
Double y = 2.0;
String operation = "+";
Double result = 6.0;
Calculation object = new Calculation();
object.calculate(x, y, operation);
assertEquals(result, object.getTotal());
}
@Test
public void testCos() {
Double x = 90.0;
String operation = "cos";
Double result = Math.cos(x);
Calculation object = new Calculation();
object.setTotal(x);
object.calculate(operation);
assertEquals(result, object.getTotal());
}