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qemu/tests/test-qmp-input-visitor.c
Markus Armbruster 84d18f065f Use error_is_set() only when necessary 
error_is_set(&var) is the same as var != NULL, but it takes
whole-program analysis to figure that out.  Unnecessarily hard for
optimizers, static checkers, and human readers.  Dumb it down to
obvious.

Gets rid of several dozen Coverity false positives.

Note that the obvious form is already used in many places.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Andreas Färber <afaerber@suse.de>
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
2014-02-17 11:57:23 -05:00

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/*
* QMP Input Visitor unit-tests.
*
* Copyright (C) 2011 Red Hat Inc.
*
* Authors:
* Luiz Capitulino <lcapitulino@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.
*/
#include <glib.h>
#include <stdarg.h>
#include "qemu-common.h"
#include "qapi/qmp-input-visitor.h"
#include "test-qapi-types.h"
#include "test-qapi-visit.h"
#include "qapi/qmp/types.h"
typedef struct TestInputVisitorData {
QObject *obj;
QmpInputVisitor *qiv;
} TestInputVisitorData;
static void visitor_input_teardown(TestInputVisitorData *data,
const void *unused)
{
qobject_decref(data->obj);
data->obj = NULL;
if (data->qiv) {
qmp_input_visitor_cleanup(data->qiv);
data->qiv = NULL;
}
}
/* This is provided instead of a test setup function so that the JSON
string used by the tests are kept in the test functions (and not
int main()) */
static GCC_FMT_ATTR(2, 3)
Visitor *visitor_input_test_init(TestInputVisitorData *data,
const char *json_string, ...)
{
Visitor *v;
va_list ap;
va_start(ap, json_string);
data->obj = qobject_from_jsonv(json_string, &ap);
va_end(ap);
g_assert(data->obj != NULL);
data->qiv = qmp_input_visitor_new(data->obj);
g_assert(data->qiv != NULL);
v = qmp_input_get_visitor(data->qiv);
g_assert(v != NULL);
return v;
}
/* similar to visitor_input_test_init(), but does not expect a string
* literal/format json_string argument and so can be used for
* programatically generated strings (and we can't pass in programatically
* generated strings via %s format parameters since qobject_from_jsonv()
* will wrap those in double-quotes and treat the entire object as a
* string)
*/
static Visitor *visitor_input_test_init_raw(TestInputVisitorData *data,
const char *json_string)
{
Visitor *v;
data->obj = qobject_from_json(json_string);
g_assert(data->obj != NULL);
data->qiv = qmp_input_visitor_new(data->obj);
g_assert(data->qiv != NULL);
v = qmp_input_get_visitor(data->qiv);
g_assert(v != NULL);
return v;
}
static void test_visitor_in_int(TestInputVisitorData *data,
const void *unused)
{
int64_t res = 0, value = -42;
Error *errp = NULL;
Visitor *v;
v = visitor_input_test_init(data, "%" PRId64, value);
visit_type_int(v, &res, NULL, &errp);
g_assert(!errp);
g_assert_cmpint(res, ==, value);
}
static void test_visitor_in_int_overflow(TestInputVisitorData *data,
const void *unused)
{
int64_t res = 0;
Error *errp = NULL;
Visitor *v;
/* this will overflow a Qint/int64, so should be deserialized into
* a QFloat/double field instead, leading to an error if we pass it
* to visit_type_int. confirm this.
*/
v = visitor_input_test_init(data, "%f", DBL_MAX);
visit_type_int(v, &res, NULL, &errp);
g_assert(errp);
error_free(errp);
}
static void test_visitor_in_bool(TestInputVisitorData *data,
const void *unused)
{
Error *errp = NULL;
bool res = false;
Visitor *v;
v = visitor_input_test_init(data, "true");
visit_type_bool(v, &res, NULL, &errp);
g_assert(!errp);
g_assert_cmpint(res, ==, true);
}
static void test_visitor_in_number(TestInputVisitorData *data,
const void *unused)
{
double res = 0, value = 3.14;
Error *errp = NULL;
Visitor *v;
v = visitor_input_test_init(data, "%f", value);
visit_type_number(v, &res, NULL, &errp);
g_assert(!errp);
g_assert_cmpfloat(res, ==, value);
}
static void test_visitor_in_string(TestInputVisitorData *data,
const void *unused)
{
char *res = NULL, *value = (char *) "Q E M U";
Error *errp = NULL;
Visitor *v;
v = visitor_input_test_init(data, "%s", value);
visit_type_str(v, &res, NULL, &errp);
g_assert(!errp);
g_assert_cmpstr(res, ==, value);
g_free(res);
}
static void test_visitor_in_enum(TestInputVisitorData *data,
const void *unused)
{
Error *errp = NULL;
Visitor *v;
EnumOne i;
for (i = 0; EnumOne_lookup[i]; i++) {
EnumOne res = -1;
v = visitor_input_test_init(data, "%s", EnumOne_lookup[i]);
visit_type_EnumOne(v, &res, NULL, &errp);
g_assert(!errp);
g_assert_cmpint(i, ==, res);
visitor_input_teardown(data, NULL);
}
data->obj = NULL;
data->qiv = NULL;
}
typedef struct TestStruct
{
int64_t integer;
bool boolean;
char *string;
} TestStruct;
static void visit_type_TestStruct(Visitor *v, TestStruct **obj,
const char *name, Error **errp)
{
Error *err = NULL;
if (!error_is_set(errp)) {
visit_start_struct(v, (void **)obj, "TestStruct", name, sizeof(TestStruct),
&err);
if (!err) {
visit_type_int(v, &(*obj)->integer, "integer", &err);
visit_type_bool(v, &(*obj)->boolean, "boolean", &err);
visit_type_str(v, &(*obj)->string, "string", &err);
/* Always call end_struct if start_struct succeeded. */
error_propagate(errp, err);
err = NULL;
visit_end_struct(v, &err);
}
error_propagate(errp, err);
}
}
static void test_visitor_in_struct(TestInputVisitorData *data,
const void *unused)
{
TestStruct *p = NULL;
Error *errp = NULL;
Visitor *v;
v = visitor_input_test_init(data, "{ 'integer': -42, 'boolean': true, 'string': 'foo' }");
visit_type_TestStruct(v, &p, NULL, &errp);
g_assert(!errp);
g_assert_cmpint(p->integer, ==, -42);
g_assert(p->boolean == true);
g_assert_cmpstr(p->string, ==, "foo");
g_free(p->string);
g_free(p);
}
static void check_and_free_str(char *str, const char *cmp)
{
g_assert_cmpstr(str, ==, cmp);
g_free(str);
}
static void test_visitor_in_struct_nested(TestInputVisitorData *data,
const void *unused)
{
UserDefNested *udp = NULL;
Error *errp = NULL;
Visitor *v;
v = visitor_input_test_init(data, "{ 'string0': 'string0', 'dict1': { 'string1': 'string1', 'dict2': { 'userdef1': { 'integer': 42, 'string': 'string' }, 'string2': 'string2'}}}");
visit_type_UserDefNested(v, &udp, NULL, &errp);
g_assert(!errp);
check_and_free_str(udp->string0, "string0");
check_and_free_str(udp->dict1.string1, "string1");
g_assert_cmpint(udp->dict1.dict2.userdef1->integer, ==, 42);
check_and_free_str(udp->dict1.dict2.userdef1->string, "string");
check_and_free_str(udp->dict1.dict2.string2, "string2");
g_assert(udp->dict1.has_dict3 == false);
g_free(udp->dict1.dict2.userdef1);
g_free(udp);
}
static void test_visitor_in_list(TestInputVisitorData *data,
const void *unused)
{
UserDefOneList *item, *head = NULL;
Error *errp = NULL;
Visitor *v;
int i;
v = visitor_input_test_init(data, "[ { 'string': 'string0', 'integer': 42 }, { 'string': 'string1', 'integer': 43 }, { 'string': 'string2', 'integer': 44 } ]");
visit_type_UserDefOneList(v, &head, NULL, &errp);
g_assert(!errp);
g_assert(head != NULL);
for (i = 0, item = head; item; item = item->next, i++) {
char string[12];
snprintf(string, sizeof(string), "string%d", i);
g_assert_cmpstr(item->value->string, ==, string);
g_assert_cmpint(item->value->integer, ==, 42 + i);
}
qapi_free_UserDefOneList(head);
}
static void test_visitor_in_union(TestInputVisitorData *data,
const void *unused)
{
Visitor *v;
Error *err = NULL;
UserDefUnion *tmp;
v = visitor_input_test_init(data, "{ 'type': 'b', 'data' : { 'integer': 42 } }");
visit_type_UserDefUnion(v, &tmp, NULL, &err);
g_assert(err == NULL);
g_assert_cmpint(tmp->kind, ==, USER_DEF_UNION_KIND_B);
g_assert_cmpint(tmp->b->integer, ==, 42);
qapi_free_UserDefUnion(tmp);
}
static void test_native_list_integer_helper(TestInputVisitorData *data,
const void *unused,
UserDefNativeListUnionKind kind)
{
UserDefNativeListUnion *cvalue = NULL;
Error *err = NULL;
Visitor *v;
GString *gstr_list = g_string_new("");
GString *gstr_union = g_string_new("");
int i;
for (i = 0; i < 32; i++) {
g_string_append_printf(gstr_list, "%d", i);
if (i != 31) {
g_string_append(gstr_list, ", ");
}
}
g_string_append_printf(gstr_union, "{ 'type': '%s', 'data': [ %s ] }",
UserDefNativeListUnionKind_lookup[kind],
gstr_list->str);
v = visitor_input_test_init_raw(data, gstr_union->str);
visit_type_UserDefNativeListUnion(v, &cvalue, NULL, &err);
g_assert(err == NULL);
g_assert(cvalue != NULL);
g_assert_cmpint(cvalue->kind, ==, kind);
switch (kind) {
case USER_DEF_NATIVE_LIST_UNION_KIND_INTEGER: {
intList *elem = NULL;
for (i = 0, elem = cvalue->integer; elem; elem = elem->next, i++) {
g_assert_cmpint(elem->value, ==, i);
}
break;
}
case USER_DEF_NATIVE_LIST_UNION_KIND_S8: {
int8List *elem = NULL;
for (i = 0, elem = cvalue->s8; elem; elem = elem->next, i++) {
g_assert_cmpint(elem->value, ==, i);
}
break;
}
case USER_DEF_NATIVE_LIST_UNION_KIND_S16: {
int16List *elem = NULL;
for (i = 0, elem = cvalue->s16; elem; elem = elem->next, i++) {
g_assert_cmpint(elem->value, ==, i);
}
break;
}
case USER_DEF_NATIVE_LIST_UNION_KIND_S32: {
int32List *elem = NULL;
for (i = 0, elem = cvalue->s32; elem; elem = elem->next, i++) {
g_assert_cmpint(elem->value, ==, i);
}
break;
}
case USER_DEF_NATIVE_LIST_UNION_KIND_S64: {
int64List *elem = NULL;
for (i = 0, elem = cvalue->s64; elem; elem = elem->next, i++) {
g_assert_cmpint(elem->value, ==, i);
}
break;
}
case USER_DEF_NATIVE_LIST_UNION_KIND_U8: {
uint8List *elem = NULL;
for (i = 0, elem = cvalue->u8; elem; elem = elem->next, i++) {
g_assert_cmpint(elem->value, ==, i);
}
break;
}
case USER_DEF_NATIVE_LIST_UNION_KIND_U16: {
uint16List *elem = NULL;
for (i = 0, elem = cvalue->u16; elem; elem = elem->next, i++) {
g_assert_cmpint(elem->value, ==, i);
}
break;
}
case USER_DEF_NATIVE_LIST_UNION_KIND_U32: {
uint32List *elem = NULL;
for (i = 0, elem = cvalue->u32; elem; elem = elem->next, i++) {
g_assert_cmpint(elem->value, ==, i);
}
break;
}
case USER_DEF_NATIVE_LIST_UNION_KIND_U64: {
uint64List *elem = NULL;
for (i = 0, elem = cvalue->u64; elem; elem = elem->next, i++) {
g_assert_cmpint(elem->value, ==, i);
}
break;
}
default:
g_assert_not_reached();
}
g_string_free(gstr_union, true);
g_string_free(gstr_list, true);
qapi_free_UserDefNativeListUnion(cvalue);
}
static void test_visitor_in_native_list_int(TestInputVisitorData *data,
const void *unused)
{
test_native_list_integer_helper(data, unused,
USER_DEF_NATIVE_LIST_UNION_KIND_INTEGER);
}
static void test_visitor_in_native_list_int8(TestInputVisitorData *data,
const void *unused)
{
test_native_list_integer_helper(data, unused,
USER_DEF_NATIVE_LIST_UNION_KIND_S8);
}
static void test_visitor_in_native_list_int16(TestInputVisitorData *data,
const void *unused)
{
test_native_list_integer_helper(data, unused,
USER_DEF_NATIVE_LIST_UNION_KIND_S16);
}
static void test_visitor_in_native_list_int32(TestInputVisitorData *data,
const void *unused)
{
test_native_list_integer_helper(data, unused,
USER_DEF_NATIVE_LIST_UNION_KIND_S32);
}
static void test_visitor_in_native_list_int64(TestInputVisitorData *data,
const void *unused)
{
test_native_list_integer_helper(data, unused,
USER_DEF_NATIVE_LIST_UNION_KIND_S64);
}
static void test_visitor_in_native_list_uint8(TestInputVisitorData *data,
const void *unused)
{
test_native_list_integer_helper(data, unused,
USER_DEF_NATIVE_LIST_UNION_KIND_U8);
}
static void test_visitor_in_native_list_uint16(TestInputVisitorData *data,
const void *unused)
{
test_native_list_integer_helper(data, unused,
USER_DEF_NATIVE_LIST_UNION_KIND_U16);
}
static void test_visitor_in_native_list_uint32(TestInputVisitorData *data,
const void *unused)
{
test_native_list_integer_helper(data, unused,
USER_DEF_NATIVE_LIST_UNION_KIND_U32);
}
static void test_visitor_in_native_list_uint64(TestInputVisitorData *data,
const void *unused)
{
test_native_list_integer_helper(data, unused,
USER_DEF_NATIVE_LIST_UNION_KIND_U64);
}
static void test_visitor_in_native_list_bool(TestInputVisitorData *data,
const void *unused)
{
UserDefNativeListUnion *cvalue = NULL;
boolList *elem = NULL;
Error *err = NULL;
Visitor *v;
GString *gstr_list = g_string_new("");
GString *gstr_union = g_string_new("");
int i;
for (i = 0; i < 32; i++) {
g_string_append_printf(gstr_list, "%s",
(i % 3 == 0) ? "true" : "false");
if (i != 31) {
g_string_append(gstr_list, ", ");
}
}
g_string_append_printf(gstr_union, "{ 'type': 'boolean', 'data': [ %s ] }",
gstr_list->str);
v = visitor_input_test_init_raw(data, gstr_union->str);
visit_type_UserDefNativeListUnion(v, &cvalue, NULL, &err);
g_assert(err == NULL);
g_assert(cvalue != NULL);
g_assert_cmpint(cvalue->kind, ==, USER_DEF_NATIVE_LIST_UNION_KIND_BOOLEAN);
for (i = 0, elem = cvalue->boolean; elem; elem = elem->next, i++) {
g_assert_cmpint(elem->value, ==, (i % 3 == 0) ? 1 : 0);
}
g_string_free(gstr_union, true);
g_string_free(gstr_list, true);
qapi_free_UserDefNativeListUnion(cvalue);
}
static void test_visitor_in_native_list_string(TestInputVisitorData *data,
const void *unused)
{
UserDefNativeListUnion *cvalue = NULL;
strList *elem = NULL;
Error *err = NULL;
Visitor *v;
GString *gstr_list = g_string_new("");
GString *gstr_union = g_string_new("");
int i;
for (i = 0; i < 32; i++) {
g_string_append_printf(gstr_list, "'%d'", i);
if (i != 31) {
g_string_append(gstr_list, ", ");
}
}
g_string_append_printf(gstr_union, "{ 'type': 'string', 'data': [ %s ] }",
gstr_list->str);
v = visitor_input_test_init_raw(data, gstr_union->str);
visit_type_UserDefNativeListUnion(v, &cvalue, NULL, &err);
g_assert(err == NULL);
g_assert(cvalue != NULL);
g_assert_cmpint(cvalue->kind, ==, USER_DEF_NATIVE_LIST_UNION_KIND_STRING);
for (i = 0, elem = cvalue->string; elem; elem = elem->next, i++) {
gchar str[8];
sprintf(str, "%d", i);
g_assert_cmpstr(elem->value, ==, str);
}
g_string_free(gstr_union, true);
g_string_free(gstr_list, true);
qapi_free_UserDefNativeListUnion(cvalue);
}
#define DOUBLE_STR_MAX 16
static void test_visitor_in_native_list_number(TestInputVisitorData *data,
const void *unused)
{
UserDefNativeListUnion *cvalue = NULL;
numberList *elem = NULL;
Error *err = NULL;
Visitor *v;
GString *gstr_list = g_string_new("");
GString *gstr_union = g_string_new("");
int i;
for (i = 0; i < 32; i++) {
g_string_append_printf(gstr_list, "%f", (double)i / 3);
if (i != 31) {
g_string_append(gstr_list, ", ");
}
}
g_string_append_printf(gstr_union, "{ 'type': 'number', 'data': [ %s ] }",
gstr_list->str);
v = visitor_input_test_init_raw(data, gstr_union->str);
visit_type_UserDefNativeListUnion(v, &cvalue, NULL, &err);
g_assert(err == NULL);
g_assert(cvalue != NULL);
g_assert_cmpint(cvalue->kind, ==, USER_DEF_NATIVE_LIST_UNION_KIND_NUMBER);
for (i = 0, elem = cvalue->number; elem; elem = elem->next, i++) {
GString *double_expected = g_string_new("");
GString *double_actual = g_string_new("");
g_string_printf(double_expected, "%.6f", (double)i / 3);
g_string_printf(double_actual, "%.6f", elem->value);
g_assert_cmpstr(double_expected->str, ==, double_actual->str);
g_string_free(double_expected, true);
g_string_free(double_actual, true);
}
g_string_free(gstr_union, true);
g_string_free(gstr_list, true);
qapi_free_UserDefNativeListUnion(cvalue);
}
static void input_visitor_test_add(const char *testpath,
TestInputVisitorData *data,
void (*test_func)(TestInputVisitorData *data, const void *user_data))
{
g_test_add(testpath, TestInputVisitorData, data, NULL, test_func,
visitor_input_teardown);
}
static void test_visitor_in_errors(TestInputVisitorData *data,
const void *unused)
{
TestStruct *p = NULL;
Error *errp = NULL;
Visitor *v;
v = visitor_input_test_init(data, "{ 'integer': false, 'boolean': 'foo', 'string': -42 }");
visit_type_TestStruct(v, &p, NULL, &errp);
g_assert(errp);
g_assert(p->string == NULL);
error_free(errp);
g_free(p->string);
g_free(p);
}
int main(int argc, char **argv)
{
TestInputVisitorData in_visitor_data;
g_test_init(&argc, &argv, NULL);
input_visitor_test_add("/visitor/input/int",
&in_visitor_data, test_visitor_in_int);
input_visitor_test_add("/visitor/input/int_overflow",
&in_visitor_data, test_visitor_in_int_overflow);
input_visitor_test_add("/visitor/input/bool",
&in_visitor_data, test_visitor_in_bool);
input_visitor_test_add("/visitor/input/number",
&in_visitor_data, test_visitor_in_number);
input_visitor_test_add("/visitor/input/string",
&in_visitor_data, test_visitor_in_string);
input_visitor_test_add("/visitor/input/enum",
&in_visitor_data, test_visitor_in_enum);
input_visitor_test_add("/visitor/input/struct",
&in_visitor_data, test_visitor_in_struct);
input_visitor_test_add("/visitor/input/struct-nested",
&in_visitor_data, test_visitor_in_struct_nested);
input_visitor_test_add("/visitor/input/list",
&in_visitor_data, test_visitor_in_list);
input_visitor_test_add("/visitor/input/union",
&in_visitor_data, test_visitor_in_union);
input_visitor_test_add("/visitor/input/errors",
&in_visitor_data, test_visitor_in_errors);
input_visitor_test_add("/visitor/input/native_list/int",
&in_visitor_data,
test_visitor_in_native_list_int);
input_visitor_test_add("/visitor/input/native_list/int8",
&in_visitor_data,
test_visitor_in_native_list_int8);
input_visitor_test_add("/visitor/input/native_list/int16",
&in_visitor_data,
test_visitor_in_native_list_int16);
input_visitor_test_add("/visitor/input/native_list/int32",
&in_visitor_data,
test_visitor_in_native_list_int32);
input_visitor_test_add("/visitor/input/native_list/int64",
&in_visitor_data,
test_visitor_in_native_list_int64);
input_visitor_test_add("/visitor/input/native_list/uint8",
&in_visitor_data,
test_visitor_in_native_list_uint8);
input_visitor_test_add("/visitor/input/native_list/uint16",
&in_visitor_data,
test_visitor_in_native_list_uint16);
input_visitor_test_add("/visitor/input/native_list/uint32",
&in_visitor_data,
test_visitor_in_native_list_uint32);
input_visitor_test_add("/visitor/input/native_list/uint64",
&in_visitor_data, test_visitor_in_native_list_uint64);
input_visitor_test_add("/visitor/input/native_list/bool",
&in_visitor_data, test_visitor_in_native_list_bool);
input_visitor_test_add("/visitor/input/native_list/str",
&in_visitor_data, test_visitor_in_native_list_string);
input_visitor_test_add("/visitor/input/native_list/number",
&in_visitor_data, test_visitor_in_native_list_number);
g_test_run();
return 0;
}
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