/** Tests composition */
@Test
public void testMul2Add1() {
Integer[] ints = Arrayz.mapSelf(Fun.ADD(1).o(Fun.MUL(2)), 0, 1, 2, 3, 4, 5, 6, 7, 8, 9);
for (int i = 0; i < ints.length; i++) {
assertEquals((2 * i) + 1, (int) ints[i]);
}
}