v.add(new DERTaggedObject(true, 2, new DERBitString(new byte[] { apOptions }))); // first byte read by impl
        return new DERSequence(v);
    }

    @Test
    @DisplayName("byte[] ctor: empty token throws PACDecodingException with clear message")
    void byteArrayConstructor_emptyToken_throws() {
        // Arrange
        byte[] empty = new byte[0];

        // Act + Assert

        try {
            Class<?> cls = Class.forName("jcifs.smb.SmbEnumerationUtil$" + simpleName);
            Constructor<?> ctor = cls.getDeclaredConstructor(paramTypes);
            ctor.setAccessible(true);
            return ctor.newInstance(args);
        } catch (ClassNotFoundException | NoSuchMethodException | InstantiationException | IllegalAccessException
                | InvocationTargetException e) {

        SmbTreeHandleImpl t2 = h.getTree();

        assertSame(tree, t1, "Expected same mocked tree");
        assertSame(tree, t2, "Expected same mocked tree");

        // acquire is called once in ctor + once per getTree() call
        verify(tree, times(3)).acquire();
    }

    @Test
    @DisplayName("isValid() true when open, same tree id, connected")
    void isValid_true_whenOpenSameTreeConnected() {