tests/device-introspect-test.c

   1 /*
   2  * Device introspection test cases
   3  *
   4  * Copyright (c) 2015 Red Hat Inc.
   5  *
   6  * Authors:
   7  *  Markus Armbruster <armbru@redhat.com>,
   8  *
   9  * This work is licensed under the terms of the GNU GPL, version 2 or later.
  10  * See the COPYING file in the top-level directory.
  11  */
  12
  13 /*
  14  * Covers QMP device-list-properties and HMP device_add help.  We
  15  * currently don't check that their output makes sense, only that QEMU
  16  * survives.  Useful since we've had an astounding number of crash
  17  * bugs around here.
  18  */
  19
  20 #include "qemu/osdep.h"
  21 #include "qemu-common.h"
  22 #include "qapi/qmp/qstring.h"
  23 #include "qapi/qmp/qbool.h"
  24 #include "qapi/qmp/qdict.h"
  25 #include "libqtest.h"
  26
  27 const char common_args[] = "-nodefaults -machine none";
  28
  29 static QList *qom_list_types(const char *implements, bool abstract)
  30 {
  31     QDict *resp;
  32     QList *ret;
  33     QDict *args = qdict_new();
  34
  35     qdict_put(args, "abstract", qbool_from_bool(abstract));
  36     if (implements) {
  37         qdict_put(args, "implements", qstring_from_str(implements));
  38     }
  39     resp = qmp("{'execute': 'qom-list-types',"
  40                " 'arguments': %p }", args);
  41     g_assert(qdict_haskey(resp, "return"));
  42     ret = qdict_get_qlist(resp, "return");
  43     QINCREF(ret);
  44     QDECREF(resp);
  45     return ret;
  46 }
  47
  48 static QList *device_type_list(bool abstract)
  49 {
  50     return qom_list_types("device", abstract);
  51 }
  52
  53 static void test_one_device(const char *type)
  54 {
  55     QDict *resp;
  56     char *help, *qom_tree;
  57
  58     resp = qmp("{'execute': 'device-list-properties',"
  59                " 'arguments': {'typename': %s}}",
  60                type);
  61     QDECREF(resp);
  62
  63     help = hmp("device_add \"%s,help\"", type);
  64     g_free(help);
  65
  66     /*
  67      * Some devices leave dangling pointers in QOM behind.
  68      * "info qom-tree" has a good chance at crashing then
  69      */
  70     qom_tree = hmp("info qom-tree");
  71     g_free(qom_tree);
  72 }
  73
  74 static void test_device_intro_list(void)
  75 {
  76     QList *types;
  77     char *help;
  78
  79     qtest_start(common_args);
  80
  81     types = device_type_list(true);
  82     QDECREF(types);
  83
  84     help = hmp("device_add help");
  85     g_free(help);
  86
  87     qtest_end();
  88 }
  89
  90 static void test_device_intro_none(void)
  91 {
  92     qtest_start(common_args);
  93     test_one_device("nonexistent");
  94     qtest_end();
  95 }
  96
  97 static void test_device_intro_abstract(void)
  98 {
  99     qtest_start(common_args);
 100     test_one_device("device");
 101     qtest_end();
 102 }
 103
 104 static void test_device_intro_concrete(void)
 105 {
 106     QList *types;
 107     QListEntry *entry;
 108     const char *type;
 109
 110     qtest_start(common_args);
 111     types = device_type_list(false);
 112
 113     QLIST_FOREACH_ENTRY(types, entry) {
 114         type = qdict_get_try_str(qobject_to_qdict(qlist_entry_obj(entry)),
 115                                 "name");
 116         g_assert(type);
 117         test_one_device(type);
 118     }
 119
 120     QDECREF(types);
 121     qtest_end();
 122 }
 123
 124 static void test_abstract_interfaces(void)
 125 {
 126     QList *all_types;
 127     QList *obj_types;
 128     QListEntry *ae;
 129
 130     qtest_start(common_args);
 131     /* qom-list-types implements=interface would return any type
 132      * that implements _any_ interface (not just interface types),
 133      * so use a trick to find the interface type names:
 134      * - list all object types
 135      * - list all types, and look for items that are not
 136      *   on the first list
 137      */
 138     all_types = qom_list_types(NULL, false);
 139     obj_types = qom_list_types("object", false);
 140
 141     QLIST_FOREACH_ENTRY(all_types, ae) {
 142         QDict *at = qobject_to_qdict(qlist_entry_obj(ae));
 143         const char *aname = qdict_get_str(at, "name");
 144         QListEntry *oe;
 145         const char *found = NULL;
 146
 147         QLIST_FOREACH_ENTRY(obj_types, oe) {
 148             QDict *ot = qobject_to_qdict(qlist_entry_obj(oe));
 149             const char *oname = qdict_get_str(ot, "name");
 150             if (!strcmp(aname, oname)) {
 151                 found = oname;
 152                 break;
 153             }
 154         }
 155
 156         /* Using g_assert_cmpstr() will give more useful failure
 157          * messages than g_assert(found) */
 158         g_assert_cmpstr(aname, ==, found);
 159     }
 160
 161     QDECREF(all_types);
 162     QDECREF(obj_types);
 163     qtest_end();
 164 }
 165
 166 int main(int argc, char **argv)
 167 {
 168     g_test_init(&argc, &argv, NULL);
 169
 170     qtest_add_func("device/introspect/list", test_device_intro_list);
 171     qtest_add_func("device/introspect/none", test_device_intro_none);
 172     qtest_add_func("device/introspect/abstract", test_device_intro_abstract);
 173     qtest_add_func("device/introspect/concrete", test_device_intro_concrete);
 174     qtest_add_func("device/introspect/abstract-interfaces", test_abstract_interfaces);
 175
 176     return g_test_run();
 177 }