@org.junit.Test
    public void testClasses() {
        class A {
        }
        A a = new A();
        assertEquals(a, a);
        assertTrue(new A[]{a, a, a}.equals(new A[]{a, a, a}));
        assertEquals(new A(), new A());
    }

    @Test
    public void testClassB() {
        class B {
            @Override
            public boolean equals(Object other) {
                return true;
            }
        }
        assertEquals(new B(), new B());
        assertEquals(new B().toString(), new B().toString()); // This is a hard one
    }