@Test
public void test_add() {
IMath math = new math.Math();
assertEquals(5, math.add(2, 3));
assertEquals(0, math.add(0, 0));
assertEquals(0, math.add(-1, 1));
}
@Test
public void test_mul() {
IMath math = new math.Math();
assertEquals(6, math.mul(6, 1));
assertEquals(8, math.mul(4, 2));
assertEquals(0, math.mul(5, 0));
}
@Test
public void test_div() {
IMath math = new math.Math();
assertEquals(3, math.div(9, 3));
assertEquals(5, math.div(15, 3));
assertEquals(6, math.div(36, 6));
}
@Test
public void test_sub() {
IMath math = new math.Math();
assertEquals(6, math.sub(6, 0));
assertEquals(6, math.sub(9, 3));
assertEquals(0, math.sub(-1, -1));
}