qemu-e2k/tests/test-qmp-commands.c
Eric Blake 32bafa8fdd qapi: Don't special-case simple union wrappers
Simple unions were carrying a special case that hid their 'data'
QMP member from the resulting C struct, via the hack method
QAPISchemaObjectTypeVariant.simple_union_type().  But by using
the work we started by unboxing flat union and alternate
branches, coupled with the ability to visit the members of an
implicit type, we can now expose the simple union's implicit
type in qapi-types.h:

| struct q_obj_ImageInfoSpecificQCow2_wrapper {
|     ImageInfoSpecificQCow2 *data;
| };
|
| struct q_obj_ImageInfoSpecificVmdk_wrapper {
|     ImageInfoSpecificVmdk *data;
| };
...
| struct ImageInfoSpecific {
|     ImageInfoSpecificKind type;
|     union { /* union tag is @type */
|         void *data;
|-        ImageInfoSpecificQCow2 *qcow2;
|-        ImageInfoSpecificVmdk *vmdk;
|+        q_obj_ImageInfoSpecificQCow2_wrapper qcow2;
|+        q_obj_ImageInfoSpecificVmdk_wrapper vmdk;
|     } u;
| };

Doing this removes asymmetry between QAPI's QMP side and its
C side (both sides now expose 'data'), and means that the
treatment of a simple union as sugar for a flat union is now
equivalent in both languages (previously the two approaches used
a different layer of dereferencing, where the simple union could
be converted to a flat union with equivalent C layout but
different {} on the wire, or to an equivalent QMP wire form
but with different C representation).  Using the implicit type
also lets us get rid of the simple_union_type() hack.

Of course, now all clients of simple unions have to adjust from
using su->u.member to using su->u.member.data; while this touches
a number of files in the tree, some earlier cleanup patches
helped minimize the change to the initialization of a temporary
variable rather than every single member access.  The generated
qapi-visit.c code is also affected by the layout change:

|@@ -7393,10 +7393,10 @@ void visit_type_ImageInfoSpecific_member
|     }
|     switch (obj->type) {
|     case IMAGE_INFO_SPECIFIC_KIND_QCOW2:
|-        visit_type_ImageInfoSpecificQCow2(v, "data", &obj->u.qcow2, &err);
|+        visit_type_q_obj_ImageInfoSpecificQCow2_wrapper_members(v, &obj->u.qcow2, &err);
|         break;
|     case IMAGE_INFO_SPECIFIC_KIND_VMDK:
|-        visit_type_ImageInfoSpecificVmdk(v, "data", &obj->u.vmdk, &err);
|+        visit_type_q_obj_ImageInfoSpecificVmdk_wrapper_members(v, &obj->u.vmdk, &err);
|         break;
|     default:
|         abort();

Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <1458254921-17042-13-git-send-email-eblake@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
2016-03-18 10:29:26 +01:00

260 lines
7.7 KiB
C

#include "qemu/osdep.h"
#include <glib.h>
#include "qemu-common.h"
#include "qapi/qmp/types.h"
#include "test-qmp-commands.h"
#include "qapi/qmp/dispatch.h"
#include "qemu/module.h"
#include "qapi/qmp-input-visitor.h"
#include "tests/test-qapi-types.h"
#include "tests/test-qapi-visit.h"
void qmp_user_def_cmd(Error **errp)
{
}
Empty2 *qmp_user_def_cmd0(Error **errp)
{
return g_new0(Empty2, 1);
}
void qmp_user_def_cmd1(UserDefOne * ud1, Error **errp)
{
}
UserDefTwo *qmp_user_def_cmd2(UserDefOne *ud1a,
bool has_udb1, UserDefOne *ud1b,
Error **errp)
{
UserDefTwo *ret;
UserDefOne *ud1c = g_malloc0(sizeof(UserDefOne));
UserDefOne *ud1d = g_malloc0(sizeof(UserDefOne));
ud1c->string = strdup(ud1a->string);
ud1c->integer = ud1a->integer;
ud1d->string = strdup(has_udb1 ? ud1b->string : "blah0");
ud1d->integer = has_udb1 ? ud1b->integer : 0;
ret = g_new0(UserDefTwo, 1);
ret->string0 = strdup("blah1");
ret->dict1 = g_new0(UserDefTwoDict, 1);
ret->dict1->string1 = strdup("blah2");
ret->dict1->dict2 = g_new0(UserDefTwoDictDict, 1);
ret->dict1->dict2->userdef = ud1c;
ret->dict1->dict2->string = strdup("blah3");
ret->dict1->dict3 = g_new0(UserDefTwoDictDict, 1);
ret->dict1->has_dict3 = true;
ret->dict1->dict3->userdef = ud1d;
ret->dict1->dict3->string = strdup("blah4");
return ret;
}
int64_t qmp_guest_get_time(int64_t a, bool has_b, int64_t b, Error **errp)
{
return a + (has_b ? b : 0);
}
QObject *qmp_guest_sync(QObject *arg, Error **errp)
{
return arg;
}
__org_qemu_x_Union1 *qmp___org_qemu_x_command(__org_qemu_x_EnumList *a,
__org_qemu_x_StructList *b,
__org_qemu_x_Union2 *c,
__org_qemu_x_Alt *d,
Error **errp)
{
__org_qemu_x_Union1 *ret = g_new0(__org_qemu_x_Union1, 1);
ret->type = ORG_QEMU_X_UNION1_KIND___ORG_QEMU_X_BRANCH;
ret->u.__org_qemu_x_branch.data = strdup("blah1");
/* Also test that 'wchar-t' was munged to 'q_wchar_t' */
if (b && b->value && !b->value->has_q_wchar_t) {
b->value->q_wchar_t = 1;
}
return ret;
}
/* test commands with no input and no return value */
static void test_dispatch_cmd(void)
{
QDict *req = qdict_new();
QObject *resp;
qdict_put_obj(req, "execute", QOBJECT(qstring_from_str("user_def_cmd")));
resp = qmp_dispatch(QOBJECT(req));
assert(resp != NULL);
assert(!qdict_haskey(qobject_to_qdict(resp), "error"));
qobject_decref(resp);
QDECREF(req);
}
/* test commands that return an error due to invalid parameters */
static void test_dispatch_cmd_error(void)
{
QDict *req = qdict_new();
QObject *resp;
qdict_put_obj(req, "execute", QOBJECT(qstring_from_str("user_def_cmd2")));
resp = qmp_dispatch(QOBJECT(req));
assert(resp != NULL);
assert(qdict_haskey(qobject_to_qdict(resp), "error"));
qobject_decref(resp);
QDECREF(req);
}
static QObject *test_qmp_dispatch(QDict *req)
{
QObject *resp_obj;
QDict *resp;
QObject *ret;
resp_obj = qmp_dispatch(QOBJECT(req));
assert(resp_obj);
resp = qobject_to_qdict(resp_obj);
assert(resp && !qdict_haskey(resp, "error"));
ret = qdict_get(resp, "return");
assert(ret);
qobject_incref(ret);
qobject_decref(resp_obj);
return ret;
}
/* test commands that involve both input parameters and return values */
static void test_dispatch_cmd_io(void)
{
QDict *req = qdict_new();
QDict *args = qdict_new();
QDict *args3 = qdict_new();
QDict *ud1a = qdict_new();
QDict *ud1b = qdict_new();
QDict *ret, *ret_dict, *ret_dict_dict, *ret_dict_dict_userdef;
QDict *ret_dict_dict2, *ret_dict_dict2_userdef;
QInt *ret3;
qdict_put_obj(ud1a, "integer", QOBJECT(qint_from_int(42)));
qdict_put_obj(ud1a, "string", QOBJECT(qstring_from_str("hello")));
qdict_put_obj(ud1b, "integer", QOBJECT(qint_from_int(422)));
qdict_put_obj(ud1b, "string", QOBJECT(qstring_from_str("hello2")));
qdict_put_obj(args, "ud1a", QOBJECT(ud1a));
qdict_put_obj(args, "ud1b", QOBJECT(ud1b));
qdict_put_obj(req, "arguments", QOBJECT(args));
qdict_put_obj(req, "execute", QOBJECT(qstring_from_str("user_def_cmd2")));
ret = qobject_to_qdict(test_qmp_dispatch(req));
assert(!strcmp(qdict_get_str(ret, "string0"), "blah1"));
ret_dict = qdict_get_qdict(ret, "dict1");
assert(!strcmp(qdict_get_str(ret_dict, "string1"), "blah2"));
ret_dict_dict = qdict_get_qdict(ret_dict, "dict2");
ret_dict_dict_userdef = qdict_get_qdict(ret_dict_dict, "userdef");
assert(qdict_get_int(ret_dict_dict_userdef, "integer") == 42);
assert(!strcmp(qdict_get_str(ret_dict_dict_userdef, "string"), "hello"));
assert(!strcmp(qdict_get_str(ret_dict_dict, "string"), "blah3"));
ret_dict_dict2 = qdict_get_qdict(ret_dict, "dict3");
ret_dict_dict2_userdef = qdict_get_qdict(ret_dict_dict2, "userdef");
assert(qdict_get_int(ret_dict_dict2_userdef, "integer") == 422);
assert(!strcmp(qdict_get_str(ret_dict_dict2_userdef, "string"), "hello2"));
assert(!strcmp(qdict_get_str(ret_dict_dict2, "string"), "blah4"));
QDECREF(ret);
qdict_put(args3, "a", qint_from_int(66));
qdict_put(req, "arguments", args3);
qdict_put(req, "execute", qstring_from_str("guest-get-time"));
ret3 = qobject_to_qint(test_qmp_dispatch(req));
assert(qint_get_int(ret3) == 66);
QDECREF(ret3);
QDECREF(req);
}
/* test generated dealloc functions for generated types */
static void test_dealloc_types(void)
{
UserDefOne *ud1test, *ud1a, *ud1b;
UserDefOneList *ud1list;
ud1test = g_malloc0(sizeof(UserDefOne));
ud1test->integer = 42;
ud1test->string = g_strdup("hi there 42");
qapi_free_UserDefOne(ud1test);
ud1a = g_malloc0(sizeof(UserDefOne));
ud1a->integer = 43;
ud1a->string = g_strdup("hi there 43");
ud1b = g_malloc0(sizeof(UserDefOne));
ud1b->integer = 44;
ud1b->string = g_strdup("hi there 44");
ud1list = g_malloc0(sizeof(UserDefOneList));
ud1list->value = ud1a;
ud1list->next = g_malloc0(sizeof(UserDefOneList));
ud1list->next->value = ud1b;
qapi_free_UserDefOneList(ud1list);
}
/* test generated deallocation on an object whose construction was prematurely
* terminated due to an error */
static void test_dealloc_partial(void)
{
static const char text[] = "don't leak me";
UserDefTwo *ud2 = NULL;
Error *err = NULL;
/* create partial object */
{
QDict *ud2_dict;
QmpInputVisitor *qiv;
ud2_dict = qdict_new();
qdict_put_obj(ud2_dict, "string0", QOBJECT(qstring_from_str(text)));
qiv = qmp_input_visitor_new(QOBJECT(ud2_dict));
visit_type_UserDefTwo(qmp_input_get_visitor(qiv), NULL, &ud2, &err);
qmp_input_visitor_cleanup(qiv);
QDECREF(ud2_dict);
}
/* verify partial success */
assert(ud2 != NULL);
assert(ud2->string0 != NULL);
assert(strcmp(ud2->string0, text) == 0);
assert(ud2->dict1 == NULL);
/* confirm & release construction error */
error_free_or_abort(&err);
/* tear down partial object */
qapi_free_UserDefTwo(ud2);
}
int main(int argc, char **argv)
{
g_test_init(&argc, &argv, NULL);
g_test_add_func("/0.15/dispatch_cmd", test_dispatch_cmd);
g_test_add_func("/0.15/dispatch_cmd_error", test_dispatch_cmd_error);
g_test_add_func("/0.15/dispatch_cmd_io", test_dispatch_cmd_io);
g_test_add_func("/0.15/dealloc_types", test_dealloc_types);
g_test_add_func("/0.15/dealloc_partial", test_dealloc_partial);
module_call_init(MODULE_INIT_QAPI);
g_test_run();
return 0;
}