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/qdict.h"
  24 #include "qapi/qmp/qlist.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_bool(args, "abstract", abstract);
  36     if (implements) {
  37         qdict_put_str(args, "implements", 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     qobject_ref(ret);
  44     qobject_unref(resp);
  45     return ret;
  46 }
  47
  48 /* Build a name -> ObjectTypeInfo index from a ObjectTypeInfo list */
  49 static QDict *qom_type_index(QList *types)
  50 {
  51     QDict *index = qdict_new();
  52     QListEntry *e;
  53
  54     QLIST_FOREACH_ENTRY(types, e) {
  55         QDict *d = qobject_to(QDict, qlist_entry_obj(e));
  56         const char *name = qdict_get_str(d, "name");
  57         qobject_ref(d);
  58         qdict_put(index, name, d);
  59     }
  60     return index;
  61 }
  62
  63 /* Check if @parent is present in the parent chain of @type */
  64 static bool qom_has_parent(QDict *index, const char *type, const char *parent)
  65 {
  66     while (type) {
  67         QDict *d = qdict_get_qdict(index, type);
  68         const char *p = d && qdict_haskey(d, "parent") ?
  69                         qdict_get_str(d, "parent") :
  70                         NULL;
  71
  72         if (!strcmp(type, parent)) {
  73             return true;
  74         }
  75
  76         type = p;
  77     }
  78
  79     return false;
  80 }
  81
  82 /* Find an entry on a list returned by qom-list-types */
  83 static QDict *type_list_find(QList *types, const char *name)
  84 {
  85     QListEntry *e;
  86
  87     QLIST_FOREACH_ENTRY(types, e) {
  88         QDict *d = qobject_to(QDict, qlist_entry_obj(e));
  89         const char *ename = qdict_get_str(d, "name");
  90         if (!strcmp(ename, name)) {
  91             return d;
  92         }
  93     }
  94
  95     return NULL;
  96 }
  97
  98 static QList *device_type_list(bool abstract)
  99 {
 100     return qom_list_types("device", abstract);
 101 }
 102
 103 static void test_one_device(const char *type)
 104 {
 105     QDict *resp;
 106     char *help;
 107     char *qom_tree_start, *qom_tree_end;
 108     char *qtree_start, *qtree_end;
 109
 110     g_test_message("Testing device '%s'", type);
 111
 112     qom_tree_start = hmp("info qom-tree");
 113     qtree_start = hmp("info qtree");
 114
 115     resp = qmp("{'execute': 'device-list-properties',"
 116                " 'arguments': {'typename': %s}}",
 117                type);
 118     qobject_unref(resp);
 119
 120     help = hmp("device_add \"%s,help\"", type);
 121     g_free(help);
 122
 123     /*
 124      * Some devices leave dangling pointers in QOM behind.
 125      * "info qom-tree" or "info qtree" have a good chance at crashing then.
 126      * Also make sure that the tree did not change.
 127      */
 128     qom_tree_end = hmp("info qom-tree");
 129     g_assert_cmpstr(qom_tree_start, ==, qom_tree_end);
 130     g_free(qom_tree_start);
 131     g_free(qom_tree_end);
 132
 133     qtree_end = hmp("info qtree");
 134     g_assert_cmpstr(qtree_start, ==, qtree_end);
 135     g_free(qtree_start);
 136     g_free(qtree_end);
 137 }
 138
 139 static void test_device_intro_list(void)
 140 {
 141     QList *types;
 142     char *help;
 143
 144     qtest_start(common_args);
 145
 146     types = device_type_list(true);
 147     qobject_unref(types);
 148
 149     help = hmp("device_add help");
 150     g_free(help);
 151
 152     qtest_end();
 153 }
 154
 155 /*
 156  * Ensure all entries returned by qom-list-types implements=<parent>
 157  * have <parent> as a parent.
 158  */
 159 static void test_qom_list_parents(const char *parent)
 160 {
 161     QList *types;
 162     QListEntry *e;
 163     QDict *index;
 164
 165     types = qom_list_types(parent, true);
 166     index = qom_type_index(types);
 167
 168     QLIST_FOREACH_ENTRY(types, e) {
 169         QDict *d = qobject_to(QDict, qlist_entry_obj(e));
 170         const char *name = qdict_get_str(d, "name");
 171
 172         g_assert(qom_has_parent(index, name, parent));
 173     }
 174
 175     qobject_unref(types);
 176     qobject_unref(index);
 177 }
 178
 179 static void test_qom_list_fields(void)
 180 {
 181     QList *all_types;
 182     QList *non_abstract;
 183     QListEntry *e;
 184
 185     qtest_start(common_args);
 186
 187     all_types = qom_list_types(NULL, true);
 188     non_abstract = qom_list_types(NULL, false);
 189
 190     QLIST_FOREACH_ENTRY(all_types, e) {
 191         QDict *d = qobject_to(QDict, qlist_entry_obj(e));
 192         const char *name = qdict_get_str(d, "name");
 193         bool abstract = qdict_haskey(d, "abstract") ?
 194                         qdict_get_bool(d, "abstract") :
 195                         false;
 196         bool expected_abstract = !type_list_find(non_abstract, name);
 197
 198         g_assert(abstract == expected_abstract);
 199     }
 200
 201     test_qom_list_parents("object");
 202     test_qom_list_parents("device");
 203     test_qom_list_parents("sys-bus-device");
 204
 205     qobject_unref(all_types);
 206     qobject_unref(non_abstract);
 207     qtest_end();
 208 }
 209
 210 static void test_device_intro_none(void)
 211 {
 212     qtest_start(common_args);
 213     test_one_device("nonexistent");
 214     qtest_end();
 215 }
 216
 217 static void test_device_intro_abstract(void)
 218 {
 219     qtest_start(common_args);
 220     test_one_device("device");
 221     qtest_end();
 222 }
 223
 224 static void test_device_intro_concrete(void)
 225 {
 226     QList *types;
 227     QListEntry *entry;
 228     const char *type;
 229
 230     qtest_start(common_args);
 231     types = device_type_list(false);
 232
 233     QLIST_FOREACH_ENTRY(types, entry) {
 234         type = qdict_get_try_str(qobject_to(QDict, qlist_entry_obj(entry)),
 235                                  "name");
 236         g_assert(type);
 237         test_one_device(type);
 238     }
 239
 240     qobject_unref(types);
 241     qtest_end();
 242 }
 243
 244 static void test_abstract_interfaces(void)
 245 {
 246     QList *all_types;
 247     QListEntry *e;
 248     QDict *index;
 249
 250     qtest_start(common_args);
 251
 252     all_types = qom_list_types("interface", true);
 253     index = qom_type_index(all_types);
 254
 255     QLIST_FOREACH_ENTRY(all_types, e) {
 256         QDict *d = qobject_to(QDict, qlist_entry_obj(e));
 257         const char *name = qdict_get_str(d, "name");
 258
 259         /*
 260          * qom-list-types implements=interface returns all types
 261          * that implement _any_ interface (not just interface
 262          * types), so skip the ones that don't have "interface"
 263          * on the parent type chain.
 264          */
 265         if (!qom_has_parent(index, name, "interface")) {
 266             /* Not an interface type */
 267             continue;
 268         }
 269
 270         g_assert(qdict_haskey(d, "abstract") && qdict_get_bool(d, "abstract"));
 271     }
 272
 273     qobject_unref(all_types);
 274     qobject_unref(index);
 275     qtest_end();
 276 }
 277
 278 int main(int argc, char **argv)
 279 {
 280     g_test_init(&argc, &argv, NULL);
 281
 282     qtest_add_func("device/introspect/list", test_device_intro_list);
 283     qtest_add_func("device/introspect/list-fields", test_qom_list_fields);
 284     qtest_add_func("device/introspect/none", test_device_intro_none);
 285     qtest_add_func("device/introspect/abstract", test_device_intro_abstract);
 286     qtest_add_func("device/introspect/concrete", test_device_intro_concrete);
 287     qtest_add_func("device/introspect/abstract-interfaces", test_abstract_interfaces);
 288
 289     return g_test_run();
 290 }