LXR qemu/tests/unit/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/qnull.h"
  12#include "qapi/qobject-input-visitor.h"
  13#include "qapi/qobject-output-visitor.h"
  14#include "qapi/error.h"
  15
  16/*
  17 * Public Interface test-cases
  18 *
  19 * (with some violations to access 'private' data)
  20 */
  21
  22static void qnull_ref_test(void)
  23{
  24    QObject *obj;
  25
  26    g_assert(qnull_.base.refcnt == 1);
  27    obj = QOBJECT(qnull());
  28    g_assert(obj);
  29    g_assert(obj == QOBJECT(&qnull_));
  30    g_assert(qnull_.base.refcnt == 2);
  31    g_assert(qobject_type(obj) == QTYPE_QNULL);
  32    qobject_unref(obj);
  33    g_assert(qnull_.base.refcnt == 1);
  34}
  35
  36static void qnull_visit_test(void)
  37{
  38    QObject *obj;
  39    Visitor *v;
  40    QNull *null;
  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_.base.refcnt == 1);
  49    obj = QOBJECT(qnull());
  50    v = qobject_input_visitor_new(obj);
  51    qobject_unref(obj);
  52    visit_type_null(v, NULL, &null, &error_abort);
  53    g_assert(obj == QOBJECT(&qnull_));
  54    qobject_unref(null);
  55    visit_free(v);
  56
  57    null = NULL;
  58    v = qobject_output_visitor_new(&obj);
  59    visit_type_null(v, NULL, &null, &error_abort);
  60    visit_complete(v, &obj);
  61    g_assert(obj == QOBJECT(&qnull_));
  62    qobject_unref(null);
  63    qobject_unref(obj);
  64    visit_free(v);
  65
  66    g_assert(qnull_.base.refcnt == 1);
  67}
  68
  69int main(int argc, char **argv)
  70{
  71    g_test_init(&argc, &argv, NULL);
  72
  73    g_test_add_func("/public/qnull_ref", qnull_ref_test);
  74    g_test_add_func("/public/qnull_visit", qnull_visit_test);
  75
  76    return g_test_run();
  77}
  78