How to ensure completeness in an enum switch at compile time?

Question

I have several switch statements which test an enum. All enum values must be handled in the switch statements by a case s

Answer 1

In case there are several enums on different tiers of the project that must correspond to each other, this can be ensured by a test case:

private static > String[] names(T[] values) {
    return Arrays.stream(values).map(Enum::name).toArray(String[]::new);
}

@Test
public void testEnumCompleteness() throws Exception {
    Assert.assertArrayEquals(names(Enum1.values()), names(Enum2.values()));
}