// Assert
        assertSame(handle, got, "getHandle should expose the same instance passed to constructor");
    }

    @Test
    @DisplayName("close does nothing and does not touch handle")
    void close_doesNothing() throws Exception {
        // Arrange
        SmbPipeOutputStream out = newStream();
        // constructor already calls handle.getPipe(); clear interactions to focus on close()
        clearInvocations(handle);