@Test public void test() { Coordinate p0 = new Coordinate(34.2d,34.4d); Coordinate p1 = new Coordinate(31.2d,32.4d); Coordinate p2 = new Coordinate(36.2d,35.4d); Triangle triangle = new Triangle(p0, p1, p2); Assert.assertNotNull(triangle.inCentre()); Assert.assertNotNull(triangle.centroid(p0, p1, p2)); triangle = new Triangle(2d, 4d, 15d, 23d, 23d, 32d); Assert.assertNotNull(triangle); }