}

    /**
     * Tests the readDataWireFormat method when the pipe has a valid input stream.
     */
    @Test
    void testReadDataWireFormat_withPipeIn() {
        // Setup the mock pipe and its input stream
        mockPipe.pipeIn = mockPipeIn;
        // The 'lock' field in TransactNamedPipeInputStream needs to be a real object for synchronization