@Test
public void testSin() {

    Assert.assertEquals(0, MathUtil.sin(0.0f), 0.01);
    Assert.assertEquals(0.5f, MathUtil.sin(PI / 6), 0.01);
    Assert.assertEquals(1, MathUtil.sin(HALF_PI), 0.01);
    Assert.assertEquals(0, MathUtil.sin(PI * 2), 0.01);
}