@Test
public void testMultiply() {
double result = MathLib.multiply(5, 9);
double anotherResult = MathLib.multiply(15, 10);
double expected = 45;
double unexpected = 10;
assertEquals(expected, result, 0.00001);
assertNotEquals(unexpected, anotherResult, 0.00001);
}
@Test
public void test_pi_multiply() {
double result = MathLib.multiply(5, MathLib.getPI());
double expected = 15.707963267948966;
assertEquals(expected, result, 0.00001);
}