@Test public void testSimpleHash() { // Just a simple sanity check. final Vector4 vec1 = new Vector4(1, 2, 3, 4); final Vector4 vec2 = new Vector4(1, 2, 3, 4); final Vector4 vec3 = new Vector4(2, 2, 2, 2); assertTrue(vec1.hashCode() == vec2.hashCode()); assertTrue(vec1.hashCode() != vec3.hashCode()); } }