qemu/tests/qtest/device-introspect-test.c

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/*
* Device introspection test cases
*
* Copyright (c) 2015 Red Hat Inc.
*
* Authors:
* Markus Armbruster <armbru@redhat.com>,
*
* This work is licensed under the terms of the GNU GPL, version 2 or later.
* See the COPYING file in the top-level directory.
*/
/*
* Covers QMP device-list-properties and HMP device_add help. We
* currently don't check that their output makes sense, only that QEMU
* survives. Useful since we've had an astounding number of crash
* bugs around here.
*/
#include "qemu/osdep.h"
#include "qapi/qmp/qstring.h"
#include "qapi/qmp/qdict.h"
#include "qapi/qmp/qlist.h"
#include "libqtest.h"
const char common_args[] = "-nodefaults -machine none";
static QList *qom_list_types(QTestState * qts, const char *implements,
bool abstract)
{
QDict *resp;
QList *ret;
QDict *args = qdict_new();
qdict_put_bool(args, "abstract", abstract);
if (implements) {
qdict_put_str(args, "implements", implements);
}
resp = qtest_qmp(qts, "{'execute': 'qom-list-types', 'arguments': %p }",
args);
g_assert(qdict_haskey(resp, "return"));
ret = qdict_get_qlist(resp, "return");
qobject_ref(ret);
qobject_unref(resp);
return ret;
}
/* Build a name -> ObjectTypeInfo index from a ObjectTypeInfo list */
static QDict *qom_type_index(QList *types)
{
QDict *index = qdict_new();
QListEntry *e;
QLIST_FOREACH_ENTRY(types, e) {
QDict *d = qobject_to(QDict, qlist_entry_obj(e));
const char *name = qdict_get_str(d, "name");
qobject_ref(d);
qdict_put(index, name, d);
}
return index;
}
/* Check if @parent is present in the parent chain of @type */
static bool qom_has_parent(QDict *index, const char *type, const char *parent)
{
while (type) {
QDict *d = qdict_get_qdict(index, type);
const char *p = d && qdict_haskey(d, "parent") ?
qdict_get_str(d, "parent") :
NULL;
if (!strcmp(type, parent)) {
return true;
}
type = p;
}
return false;
}
/* Find an entry on a list returned by qom-list-types */
static QDict *type_list_find(QList *types, const char *name)
{
QListEntry *e;
QLIST_FOREACH_ENTRY(types, e) {
QDict *d = qobject_to(QDict, qlist_entry_obj(e));
const char *ename = qdict_get_str(d, "name");
if (!strcmp(ename, name)) {
return d;
}
}
return NULL;
}
static QList *device_type_list(QTestState *qts, bool abstract)
{
return qom_list_types(qts, "device", abstract);
}
static void test_one_device(QTestState *qts, const char *type)
{
QDict *resp;
char *help, *escaped;
GRegex *comma;
g_test_message("Testing device '%s'", type);
resp = qtest_qmp(qts, "{'execute': 'device-list-properties',"
" 'arguments': {'typename': %s}}",
type);
qobject_unref(resp);
comma = g_regex_new(",", 0, 0, NULL);
escaped = g_regex_replace_literal(comma, type, -1, 0, ",,", 0, NULL);
g_regex_unref(comma);
help = qtest_hmp(qts, "device_add \"%s,help\"", escaped);
g_free(help);
g_free(escaped);
}
static void test_device_intro_list(void)
{
QList *types;
char *help;
QTestState *qts;
qts = qtest_init(common_args);
types = device_type_list(qts, true);
qobject_unref(types);
help = qtest_hmp(qts, "device_add help");
g_free(help);
qtest_quit(qts);
}
/*
* Ensure all entries returned by qom-list-types implements=<parent>
* have <parent> as a parent.
*/
static void test_qom_list_parents(QTestState *qts, const char *parent)
{
QList *types;
QListEntry *e;
QDict *index;
types = qom_list_types(qts, parent, true);
index = qom_type_index(types);
QLIST_FOREACH_ENTRY(types, e) {
QDict *d = qobject_to(QDict, qlist_entry_obj(e));
const char *name = qdict_get_str(d, "name");
g_assert(qom_has_parent(index, name, parent));
}
qobject_unref(types);
qobject_unref(index);
}
static void test_qom_list_fields(void)
{
QList *all_types;
QList *non_abstract;
QListEntry *e;
QTestState *qts;
qts = qtest_init(common_args);
all_types = qom_list_types(qts, NULL, true);
non_abstract = qom_list_types(qts, NULL, false);
QLIST_FOREACH_ENTRY(all_types, e) {
QDict *d = qobject_to(QDict, qlist_entry_obj(e));
const char *name = qdict_get_str(d, "name");
bool abstract = qdict_haskey(d, "abstract") ?
qdict_get_bool(d, "abstract") :
false;
bool expected_abstract = !type_list_find(non_abstract, name);
g_assert(abstract == expected_abstract);
}
test_qom_list_parents(qts, "object");
test_qom_list_parents(qts, "device");
test_qom_list_parents(qts, "sys-bus-device");
qobject_unref(all_types);
qobject_unref(non_abstract);
qtest_quit(qts);
}
static void test_device_intro_none(void)
{
QTestState *qts = qtest_init(common_args);
g_autofree char *qom_tree_start = qtest_hmp(qts, "info qom-tree");
g_autofree char *qom_tree_end = NULL;
g_autofree char *qtree_start = qtest_hmp(qts, "info qtree");
g_autofree char *qtree_end = NULL;
test_one_device(qts, "nonexistent");
/* Make sure that really nothing changed in the trees */
qom_tree_end = qtest_hmp(qts, "info qom-tree");
g_assert_cmpstr(qom_tree_start, ==, qom_tree_end);
qtree_end = qtest_hmp(qts, "info qtree");
g_assert_cmpstr(qtree_start, ==, qtree_end);
qtest_quit(qts);
}
static void test_device_intro_abstract(void)
{
QTestState *qts = qtest_init(common_args);
g_autofree char *qom_tree_start = qtest_hmp(qts, "info qom-tree");
g_autofree char *qom_tree_end = NULL;
g_autofree char *qtree_start = qtest_hmp(qts, "info qtree");
g_autofree char *qtree_end = NULL;
test_one_device(qts, "device");
/* Make sure that really nothing changed in the trees */
qom_tree_end = qtest_hmp(qts, "info qom-tree");
g_assert_cmpstr(qom_tree_start, ==, qom_tree_end);
qtree_end = qtest_hmp(qts, "info qtree");
g_assert_cmpstr(qtree_start, ==, qtree_end);
qtest_quit(qts);
}
static void test_device_intro_concrete(const void *args)
{
QList *types;
QListEntry *entry;
const char *type;
QTestState *qts = qtest_init(args);
g_autofree char *qom_tree_start = qtest_hmp(qts, "info qom-tree");
g_autofree char *qom_tree_end = NULL;
g_autofree char *qtree_start = qtest_hmp(qts, "info qtree");
g_autofree char *qtree_end = NULL;
types = device_type_list(qts, false);
QLIST_FOREACH_ENTRY(types, entry) {
type = qdict_get_try_str(qobject_to(QDict, qlist_entry_obj(entry)),
"name");
g_assert(type);
test_one_device(qts, type);
}
/*
* Some devices leave dangling pointers in QOM behind.
* "info qom-tree" or "info qtree" have a good chance at crashing then.
* Also make sure that the tree did not change.
*/
qom_tree_end = qtest_hmp(qts, "info qom-tree");
g_assert_cmpstr(qom_tree_start, ==, qom_tree_end);
qtree_end = qtest_hmp(qts, "info qtree");
g_assert_cmpstr(qtree_start, ==, qtree_end);
qobject_unref(types);
qtest_quit(qts);
}
static void test_abstract_interfaces(void)
{
QList *all_types;
QListEntry *e;
QDict *index;
QTestState *qts;
qts = qtest_init(common_args);
all_types = qom_list_types(qts, "interface", true);
index = qom_type_index(all_types);
QLIST_FOREACH_ENTRY(all_types, e) {
QDict *d = qobject_to(QDict, qlist_entry_obj(e));
const char *name = qdict_get_str(d, "name");
/*
* qom-list-types implements=interface returns all types
* that implement _any_ interface (not just interface
* types), so skip the ones that don't have "interface"
* on the parent type chain.
*/
if (!qom_has_parent(index, name, "interface")) {
/* Not an interface type */
continue;
}
g_assert(qdict_haskey(d, "abstract") && qdict_get_bool(d, "abstract"));
}
qobject_unref(all_types);
qobject_unref(index);
qtest_quit(qts);
}
static void add_machine_test_case(const char *mname)
{
char *path, *args;
path = g_strdup_printf("device/introspect/concrete/defaults/%s", mname);
args = g_strdup_printf("-M %s", mname);
qtest_add_data_func_full(path, args, test_device_intro_concrete, g_free);
g_free(path);
path = g_strdup_printf("device/introspect/concrete/nodefaults/%s", mname);
args = g_strdup_printf("-nodefaults -M %s", mname);
qtest_add_data_func_full(path, args, test_device_intro_concrete, g_free);
g_free(path);
}
int main(int argc, char **argv)
{
g_test_init(&argc, &argv, NULL);
qtest_add_func("device/introspect/list", test_device_intro_list);
qtest_add_func("device/introspect/list-fields", test_qom_list_fields);
qtest_add_func("device/introspect/none", test_device_intro_none);
qtest_add_func("device/introspect/abstract", test_device_intro_abstract);
qtest_add_func("device/introspect/abstract-interfaces", test_abstract_interfaces);
if (g_test_quick()) {
qtest_add_data_func("device/introspect/concrete/defaults/none",
common_args, test_device_intro_concrete);
} else {
qtest_cb_for_every_machine(add_machine_test_case, true);
}
return g_test_run();
}