// Then
        assertNotNull(result);
        assertTrue(result.length > 0, "HMAC-T64 should produce non-empty result");
    }

    @Test
    @DisplayName("Should perform RC4 encryption/decryption")
    void testRC4() throws Exception {
        // Given
        byte[] key = "testkey123456789".getBytes(); // 16 bytes
        byte[] plaintext = "This is a test message for RC4".getBytes();

        // When

    public void testPutAll() throws Exception {
        Map<String, String> m = new HashMap<String, String>();
        m.put("3", "test3");
        m.put("4", "test4");
        map.putAll(m);
        assertThat(map.get("3"), is("test3"));
        assertThat(map.get("4"), is("test4"));
        assertThat(map.size(), is(5));
    }

    /**
     * @throws Exception
     */
    @Test

        assertThat(count, is(3));
        assertThat(names, is("ba"));
        assertThat(DisposableUtil.disposables.size(), is(0));
    }

    /**
     * @throws Exception
     */
    @Test
    public void test4() throws Exception {
        DisposableUtil.add(new TestDisposable("a"));
        DisposableUtil.addFirst(new TestDisposable("b"));
        assertThat(DisposableUtil.disposables.size(), is(2));
        DisposableUtil.dispose();

    }

    @Test
    @DisplayName("Test managed resource prevents use after close")
    void testManagedResourceUseAfterClose() throws Exception {
        TestResource resource = new TestResource("test4");
        ResourceManager.ManagedResource<TestResource> managed = resourceManager.manage(resource);

        managed.close();
        assertTrue(resource.isClosed());