LXR qemu/tests/check-qnull.c

   1/*
   2 * QNull unit-tests.
   3 *
   4 * Copyright (C) 2016 Red Hat Inc.
   5 *
   6 * This work is licensed under the terms of the GNU LGPL, version 2.1 or later.
   7 * See the COPYING.LIB file in the top-level directory.
   8 */
   9#include "qemu/osdep.h"
  10
  11#include "qapi/qmp/qobject.h"
  12#include "qemu-common.h"
  13#include "qapi/qobject-input-visitor.h"
  14#include "qapi/qobject-output-visitor.h"
  15#include "qapi/error.h"
  16
  17/*
  18 * Public Interface test-cases
  19 *
  20 * (with some violations to access 'private' data)
  21 */
  22
  23static void qnull_ref_test(void)
  24{
  25    QObject *obj;
  26
  27    g_assert(qnull_.refcnt == 1);
  28    obj = qnull();
  29    g_assert(obj);
  30    g_assert(obj == &qnull_);
  31    g_assert(qnull_.refcnt == 2);
  32    g_assert(qobject_type(obj) == QTYPE_QNULL);
  33    qobject_decref(obj);
  34    g_assert(qnull_.refcnt == 1);
  35}
  36
  37static void qnull_visit_test(void)
  38{
  39    QObject *obj;
  40    Visitor *v;
  41
  42    /*
  43     * Most tests of interactions between QObject and visitors are in
  44     * test-qmp-*-visitor; but these tests live here because they
  45     * depend on layering violations to check qnull_ refcnt.
  46     */
  47
  48    g_assert(qnull_.refcnt == 1);
  49    obj = qnull();
  50    v = qobject_input_visitor_new(obj, true);
  51    qobject_decref(obj);
  52    visit_type_null(v, NULL, &error_abort);
  53    visit_free(v);
  54
  55    v = qobject_output_visitor_new(&obj);
  56    visit_type_null(v, NULL, &error_abort);
  57    visit_complete(v, &obj);
  58    g_assert(obj == &qnull_);
  59    qobject_decref(obj);
  60    visit_free(v);
  61
  62    g_assert(qnull_.refcnt == 1);
  63}
  64
  65int main(int argc, char **argv)
  66{
  67    g_test_init(&argc, &argv, NULL);
  68
  69    g_test_add_func("/public/qnull_ref", qnull_ref_test);
  70    g_test_add_func("/public/qnull_visit", qnull_visit_test);
  71
  72    return g_test_run();
  73}
  74