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qemu/tests/test-visitor-serialization.c

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/*
* Unit-tests for visitor-based serialization
*
* Copyright IBM, Corp. 2012
*
* Authors:
* Michael Roth <mdroth@linux.vnet.ibm.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 <stdlib.h>
#include <stdint.h>
#include <float.h>
#include "test-qapi-types.h"
#include "test-qapi-visit.h"
#include "qemu-objects.h"
#include "qapi/qmp-input-visitor.h"
#include "qapi/qmp-output-visitor.h"
#include "qapi/string-input-visitor.h"
#include "qapi/string-output-visitor.h"
typedef struct PrimitiveType {
union {
const char *string;
bool boolean;
double number;
int64_t integer;
uint8_t u8;
uint16_t u16;
uint32_t u32;
uint64_t u64;
int8_t s8;
int16_t s16;
int32_t s32;
int64_t s64;
intmax_t max;
} value;
enum {
PTYPE_STRING = 0,
PTYPE_BOOLEAN,
PTYPE_NUMBER,
PTYPE_INTEGER,
PTYPE_U8,
PTYPE_U16,
PTYPE_U32,
PTYPE_U64,
PTYPE_S8,
PTYPE_S16,
PTYPE_S32,
PTYPE_S64,
PTYPE_EOL,
} type;
const char *description;
} PrimitiveType;
/* test helpers */
static void visit_primitive_type(Visitor *v, void **native, Error **errp)
{
PrimitiveType *pt = *native;
switch(pt->type) {
case PTYPE_STRING:
visit_type_str(v, (char **)&pt->value.string, NULL, errp);
break;
case PTYPE_BOOLEAN:
visit_type_bool(v, &pt->value.boolean, NULL, errp);
break;
case PTYPE_NUMBER:
visit_type_number(v, &pt->value.number, NULL, errp);
break;
case PTYPE_INTEGER:
visit_type_int(v, &pt->value.integer, NULL, errp);
break;
case PTYPE_U8:
visit_type_uint8(v, &pt->value.u8, NULL, errp);
break;
case PTYPE_U16:
visit_type_uint16(v, &pt->value.u16, NULL, errp);
break;
case PTYPE_U32:
visit_type_uint32(v, &pt->value.u32, NULL, errp);
break;
case PTYPE_U64:
visit_type_uint64(v, &pt->value.u64, NULL, errp);
break;
case PTYPE_S8:
visit_type_int8(v, &pt->value.s8, NULL, errp);
break;
case PTYPE_S16:
visit_type_int16(v, &pt->value.s16, NULL, errp);
break;
case PTYPE_S32:
visit_type_int32(v, &pt->value.s32, NULL, errp);
break;
case PTYPE_S64:
visit_type_int64(v, &pt->value.s64, NULL, errp);
break;
case PTYPE_EOL:
g_assert(false);
}
}
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)
{
visit_start_struct(v, (void **)obj, NULL, name, sizeof(TestStruct), errp);
visit_type_int(v, &(*obj)->integer, "integer", errp);
visit_type_bool(v, &(*obj)->boolean, "boolean", errp);
visit_type_str(v, &(*obj)->string, "string", errp);
visit_end_struct(v, errp);
}
static TestStruct *struct_create(void)
{
TestStruct *ts = g_malloc0(sizeof(*ts));
ts->integer = -42;
ts->boolean = true;
ts->string = strdup("test string");
return ts;
}
static void struct_compare(TestStruct *ts1, TestStruct *ts2)
{
g_assert(ts1);
g_assert(ts2);
g_assert_cmpint(ts1->integer, ==, ts2->integer);
g_assert(ts1->boolean == ts2->boolean);
g_assert_cmpstr(ts1->string, ==, ts2->string);
}
static void struct_cleanup(TestStruct *ts)
{
g_free(ts->string);
g_free(ts);
}
static void visit_struct(Visitor *v, void **native, Error **errp)
{
visit_type_TestStruct(v, (TestStruct **)native, NULL, errp);
}
static UserDefNested *nested_struct_create(void)
{
UserDefNested *udnp = g_malloc0(sizeof(*udnp));
udnp->string0 = strdup("test_string0");
udnp->dict1.string1 = strdup("test_string1");
udnp->dict1.dict2.userdef1 = g_malloc0(sizeof(UserDefOne));
udnp->dict1.dict2.userdef1->integer = 42;
udnp->dict1.dict2.userdef1->string = strdup("test_string");
udnp->dict1.dict2.string2 = strdup("test_string2");
udnp->dict1.has_dict3 = true;
udnp->dict1.dict3.userdef2 = g_malloc0(sizeof(UserDefOne));
udnp->dict1.dict3.userdef2->integer = 43;
udnp->dict1.dict3.userdef2->string = strdup("test_string");
udnp->dict1.dict3.string3 = strdup("test_string3");
return udnp;
}
static void nested_struct_compare(UserDefNested *udnp1, UserDefNested *udnp2)
{
g_assert(udnp1);
g_assert(udnp2);
g_assert_cmpstr(udnp1->string0, ==, udnp2->string0);
g_assert_cmpstr(udnp1->dict1.string1, ==, udnp2->dict1.string1);
g_assert_cmpint(udnp1->dict1.dict2.userdef1->integer, ==,
udnp2->dict1.dict2.userdef1->integer);
g_assert_cmpstr(udnp1->dict1.dict2.userdef1->string, ==,
udnp2->dict1.dict2.userdef1->string);
g_assert_cmpstr(udnp1->dict1.dict2.string2, ==, udnp2->dict1.dict2.string2);
g_assert(udnp1->dict1.has_dict3 == udnp2->dict1.has_dict3);
g_assert_cmpint(udnp1->dict1.dict3.userdef2->integer, ==,
udnp2->dict1.dict3.userdef2->integer);
g_assert_cmpstr(udnp1->dict1.dict3.userdef2->string, ==,
udnp2->dict1.dict3.userdef2->string);
g_assert_cmpstr(udnp1->dict1.dict3.string3, ==, udnp2->dict1.dict3.string3);
}
static void nested_struct_cleanup(UserDefNested *udnp)
{
qapi_free_UserDefNested(udnp);
}
static void visit_nested_struct(Visitor *v, void **native, Error **errp)
{
visit_type_UserDefNested(v, (UserDefNested **)native, NULL, errp);
}
static void visit_nested_struct_list(Visitor *v, void **native, Error **errp)
{
visit_type_UserDefNestedList(v, (UserDefNestedList **)native, NULL, errp);
}
/* test cases */
typedef void (*VisitorFunc)(Visitor *v, void **native, Error **errp);
typedef enum VisitorCapabilities {
VCAP_PRIMITIVES = 1,
VCAP_STRUCTURES = 2,
VCAP_LISTS = 4,
} VisitorCapabilities;
typedef struct SerializeOps {
void (*serialize)(void *native_in, void **datap,
VisitorFunc visit, Error **errp);
void (*deserialize)(void **native_out, void *datap,
VisitorFunc visit, Error **errp);
void (*cleanup)(void *datap);
const char *type;
VisitorCapabilities caps;
} SerializeOps;
typedef struct TestArgs {
const SerializeOps *ops;
void *test_data;
} TestArgs;
#define FLOAT_STRING_PRECISION 6 /* corresponding to n in %.nf formatting */
static gsize calc_float_string_storage(double value)
{
int whole_value = value;
gsize i = 0;
do {
i++;
} while (whole_value /= 10);
return i + 2 + FLOAT_STRING_PRECISION;
}
static void test_primitives(gconstpointer opaque)
{
TestArgs *args = (TestArgs *) opaque;
const SerializeOps *ops = args->ops;
PrimitiveType *pt = args->test_data;
PrimitiveType *pt_copy = g_malloc0(sizeof(*pt_copy));
Error *err = NULL;
void *serialize_data;
char *double1, *double2;
pt_copy->type = pt->type;
ops->serialize(pt, &serialize_data, visit_primitive_type, &err);
ops->deserialize((void **)&pt_copy, serialize_data, visit_primitive_type, &err);
g_assert(err == NULL);
g_assert(pt_copy != NULL);
if (pt->type == PTYPE_STRING) {
g_assert_cmpstr(pt->value.string, ==, pt_copy->value.string);
} else if (pt->type == PTYPE_NUMBER) {
/* we serialize with %f for our reference visitors, so rather than fuzzy
* floating math to test "equality", just compare the formatted values
*/
double1 = g_malloc0(calc_float_string_storage(pt->value.number));
double2 = g_malloc0(calc_float_string_storage(pt_copy->value.number));
g_assert_cmpstr(double1, ==, double2);
g_free(double1);
g_free(double2);
} else if (pt->type == PTYPE_BOOLEAN) {
g_assert_cmpint(!!pt->value.max, ==, !!pt->value.max);
} else {
g_assert_cmpint(pt->value.max, ==, pt_copy->value.max);
}
ops->cleanup(serialize_data);
g_free(args);
}
static void test_struct(gconstpointer opaque)
{
TestArgs *args = (TestArgs *) opaque;
const SerializeOps *ops = args->ops;
TestStruct *ts = struct_create();
TestStruct *ts_copy = NULL;
Error *err = NULL;
void *serialize_data;
ops->serialize(ts, &serialize_data, visit_struct, &err);
ops->deserialize((void **)&ts_copy, serialize_data, visit_struct, &err);
g_assert(err == NULL);
struct_compare(ts, ts_copy);
struct_cleanup(ts);
struct_cleanup(ts_copy);
ops->cleanup(serialize_data);
g_free(args);
}
static void test_nested_struct(gconstpointer opaque)
{
TestArgs *args = (TestArgs *) opaque;
const SerializeOps *ops = args->ops;
UserDefNested *udnp = nested_struct_create();
UserDefNested *udnp_copy = NULL;
Error *err = NULL;
void *serialize_data;
ops->serialize(udnp, &serialize_data, visit_nested_struct, &err);
ops->deserialize((void **)&udnp_copy, serialize_data, visit_nested_struct, &err);
g_assert(err == NULL);
nested_struct_compare(udnp, udnp_copy);
nested_struct_cleanup(udnp);
nested_struct_cleanup(udnp_copy);
ops->cleanup(serialize_data);
g_free(args);
}
static void test_nested_struct_list(gconstpointer opaque)
{
TestArgs *args = (TestArgs *) opaque;
const SerializeOps *ops = args->ops;
UserDefNestedList *listp = NULL, *tmp, *tmp_copy, *listp_copy = NULL;
Error *err = NULL;
void *serialize_data;
int i = 0;
for (i = 0; i < 8; i++) {
tmp = g_malloc0(sizeof(UserDefNestedList));
tmp->value = nested_struct_create();
tmp->next = listp;
listp = tmp;
}
ops->serialize(listp, &serialize_data, visit_nested_struct_list, &err);
ops->deserialize((void **)&listp_copy, serialize_data,
visit_nested_struct_list, &err);
g_assert(err == NULL);
tmp = listp;
tmp_copy = listp_copy;
while (listp_copy) {
g_assert(listp);
nested_struct_compare(listp->value, listp_copy->value);
listp = listp->next;
listp_copy = listp_copy->next;
}
qapi_free_UserDefNestedList(tmp);
qapi_free_UserDefNestedList(tmp_copy);
ops->cleanup(serialize_data);
g_free(args);
}
PrimitiveType pt_values[] = {
/* string tests */
{
.description = "string_empty",
.type = PTYPE_STRING,
.value.string = "",
},
{
.description = "string_whitespace",
.type = PTYPE_STRING,
.value.string = "a b c\td",
},
{
.description = "string_newlines",
.type = PTYPE_STRING,
.value.string = "a\nb\n",
},
{
.description = "string_commas",
.type = PTYPE_STRING,
.value.string = "a,b, c,d",
},
{
.description = "string_single_quoted",
.type = PTYPE_STRING,
.value.string = "'a b',cd",
},
{
.description = "string_double_quoted",
.type = PTYPE_STRING,
.value.string = "\"a b\",cd",
},
/* boolean tests */
{
.description = "boolean_true1",
.type = PTYPE_BOOLEAN,
.value.boolean = true,
},
{
.description = "boolean_true2",
.type = PTYPE_BOOLEAN,
.value.boolean = 8,
},
{
.description = "boolean_true3",
.type = PTYPE_BOOLEAN,
.value.boolean = -1,
},
{
.description = "boolean_false1",
.type = PTYPE_BOOLEAN,
.value.boolean = false,
},
{
.description = "boolean_false2",
.type = PTYPE_BOOLEAN,
.value.boolean = 0,
},
/* number tests (double) */
/* note: we format these to %.6f before comparing, since that's how
* we serialize them and it doesn't make sense to check precision
* beyond that.
*/
{
.description = "number_sanity1",
.type = PTYPE_NUMBER,
.value.number = -1,
},
{
.description = "number_sanity2",
.type = PTYPE_NUMBER,
.value.number = 3.14159265,
},
{
.description = "number_min",
.type = PTYPE_NUMBER,
.value.number = DBL_MIN,
},
{
.description = "number_max",
.type = PTYPE_NUMBER,
.value.number = DBL_MAX,
},
/* integer tests (int64) */
{
.description = "integer_sanity1",
.type = PTYPE_INTEGER,
.value.integer = -1,
},
{
.description = "integer_sanity2",
.type = PTYPE_INTEGER,
.value.integer = INT64_MAX / 2 + 1,
},
{
.description = "integer_min",
.type = PTYPE_INTEGER,
.value.integer = INT64_MIN,
},
{
.description = "integer_max",
.type = PTYPE_INTEGER,
.value.integer = INT64_MAX,
},
/* uint8 tests */
{
.description = "uint8_sanity1",
.type = PTYPE_U8,
.value.u8 = 1,
},
{
.description = "uint8_sanity2",
.type = PTYPE_U8,
.value.u8 = UINT8_MAX / 2 + 1,
},
{
.description = "uint8_min",
.type = PTYPE_U8,
.value.u8 = 0,
},
{
.description = "uint8_max",
.type = PTYPE_U8,
.value.u8 = UINT8_MAX,
},
/* uint16 tests */
{
.description = "uint16_sanity1",
.type = PTYPE_U16,
.value.u16 = 1,
},
{
.description = "uint16_sanity2",
.type = PTYPE_U16,
.value.u16 = UINT16_MAX / 2 + 1,
},
{
.description = "uint16_min",
.type = PTYPE_U16,
.value.u16 = 0,
},
{
.description = "uint16_max",
.type = PTYPE_U16,
.value.u16 = UINT16_MAX,
},
/* uint32 tests */
{
.description = "uint32_sanity1",
.type = PTYPE_U32,
.value.u32 = 1,
},
{
.description = "uint32_sanity2",
.type = PTYPE_U32,
.value.u32 = UINT32_MAX / 2 + 1,
},
{
.description = "uint32_min",
.type = PTYPE_U32,
.value.u32 = 0,
},
{
.description = "uint32_max",
.type = PTYPE_U32,
.value.u32 = UINT32_MAX,
},
/* uint64 tests */
{
.description = "uint64_sanity1",
.type = PTYPE_U64,
.value.u64 = 1,
},
{
.description = "uint64_sanity2",
.type = PTYPE_U64,
.value.u64 = UINT64_MAX / 2 + 1,
},
{
.description = "uint64_min",
.type = PTYPE_U64,
.value.u64 = 0,
},
{
.description = "uint64_max",
.type = PTYPE_U64,
.value.u64 = UINT64_MAX,
},
/* int8 tests */
{
.description = "int8_sanity1",
.type = PTYPE_S8,
.value.s8 = -1,
},
{
.description = "int8_sanity2",
.type = PTYPE_S8,
.value.s8 = INT8_MAX / 2 + 1,
},
{
.description = "int8_min",
.type = PTYPE_S8,
.value.s8 = INT8_MIN,
},
{
.description = "int8_max",
.type = PTYPE_S8,
.value.s8 = INT8_MAX,
},
/* int16 tests */
{
.description = "int16_sanity1",
.type = PTYPE_S16,
.value.s16 = -1,
},
{
.description = "int16_sanity2",
.type = PTYPE_S16,
.value.s16 = INT16_MAX / 2 + 1,
},
{
.description = "int16_min",
.type = PTYPE_S16,
.value.s16 = INT16_MIN,
},
{
.description = "int16_max",
.type = PTYPE_S16,
.value.s16 = INT16_MAX,
},
/* int32 tests */
{
.description = "int32_sanity1",
.type = PTYPE_S32,
.value.s32 = -1,
},
{
.description = "int32_sanity2",
.type = PTYPE_S32,
.value.s32 = INT32_MAX / 2 + 1,
},
{
.description = "int32_min",
.type = PTYPE_S32,
.value.s32 = INT32_MIN,
},
{
.description = "int32_max",
.type = PTYPE_S32,
.value.s32 = INT32_MAX,
},
/* int64 tests */
{
.description = "int64_sanity1",
.type = PTYPE_S64,
.value.s64 = -1,
},
{
.description = "int64_sanity2",
.type = PTYPE_S64,
.value.s64 = INT64_MAX / 2 + 1,
},
{
.description = "int64_min",
.type = PTYPE_S64,
.value.s64 = INT64_MIN,
},
{
.description = "int64_max",
.type = PTYPE_S64,
.value.s64 = INT64_MAX,
},
{ .type = PTYPE_EOL }
};
/* visitor-specific op implementations */
typedef struct QmpSerializeData {
QmpOutputVisitor *qov;
QmpInputVisitor *qiv;
} QmpSerializeData;
static void qmp_serialize(void *native_in, void **datap,
VisitorFunc visit, Error **errp)
{
QmpSerializeData *d = g_malloc0(sizeof(*d));
d->qov = qmp_output_visitor_new();
visit(qmp_output_get_visitor(d->qov), &native_in, errp);
*datap = d;
}
static void qmp_deserialize(void **native_out, void *datap,
VisitorFunc visit, Error **errp)
{
QmpSerializeData *d = datap;
QString *output_json = qobject_to_json(qmp_output_get_qobject(d->qov));
QObject *obj = qobject_from_json(qstring_get_str(output_json));
QDECREF(output_json);
d->qiv = qmp_input_visitor_new(obj);
visit(qmp_input_get_visitor(d->qiv), native_out, errp);
}
static void qmp_cleanup(void *datap)
{
QmpSerializeData *d = datap;
qmp_output_visitor_cleanup(d->qov);
qmp_input_visitor_cleanup(d->qiv);
}
typedef struct StringSerializeData {
StringOutputVisitor *sov;
StringInputVisitor *siv;
} StringSerializeData;
static void string_serialize(void *native_in, void **datap,
VisitorFunc visit, Error **errp)
{
StringSerializeData *d = g_malloc0(sizeof(*d));
d->sov = string_output_visitor_new();
visit(string_output_get_visitor(d->sov), &native_in, errp);
*datap = d;
}
static void string_deserialize(void **native_out, void *datap,
VisitorFunc visit, Error **errp)
{
StringSerializeData *d = datap;
d->siv = string_input_visitor_new(string_output_get_string(d->sov));
visit(string_input_get_visitor(d->siv), native_out, errp);
}
static void string_cleanup(void *datap)
{
StringSerializeData *d = datap;
string_output_visitor_cleanup(d->sov);
string_input_visitor_cleanup(d->siv);
}
/* visitor registration, test harness */
/* note: to function interchangeably as a serialization mechanism your
* visitor test implementation should pass the test cases for all visitor
* capabilities: primitives, structures, and lists
*/
static const SerializeOps visitors[] = {
{
.type = "QMP",
.serialize = qmp_serialize,
.deserialize = qmp_deserialize,
.cleanup = qmp_cleanup,
.caps = VCAP_PRIMITIVES | VCAP_STRUCTURES | VCAP_LISTS
},
{
.type = "String",
.serialize = string_serialize,
.deserialize = string_deserialize,
.cleanup = string_cleanup,
.caps = VCAP_PRIMITIVES
},
{ NULL }
};
static void add_visitor_type(const SerializeOps *ops)
{
char testname_prefix[128];
char testname[128];
TestArgs *args;
int i = 0;
sprintf(testname_prefix, "/visitor/serialization/%s", ops->type);
if (ops->caps & VCAP_PRIMITIVES) {
while (pt_values[i].type != PTYPE_EOL) {
sprintf(testname, "%s/primitives/%s", testname_prefix,
pt_values[i].description);
args = g_malloc0(sizeof(*args));
args->ops = ops;
args->test_data = &pt_values[i];
g_test_add_data_func(testname, args, test_primitives);
i++;
}
}
if (ops->caps & VCAP_STRUCTURES) {
sprintf(testname, "%s/struct", testname_prefix);
args = g_malloc0(sizeof(*args));
args->ops = ops;
args->test_data = NULL;
g_test_add_data_func(testname, args, test_struct);
sprintf(testname, "%s/nested_struct", testname_prefix);
args = g_malloc0(sizeof(*args));
args->ops = ops;
args->test_data = NULL;
g_test_add_data_func(testname, args, test_nested_struct);
}
if (ops->caps & VCAP_LISTS) {
sprintf(testname, "%s/nested_struct_list", testname_prefix);
args = g_malloc0(sizeof(*args));
args->ops = ops;
args->test_data = NULL;
g_test_add_data_func(testname, args, test_nested_struct_list);
}
}
int main(int argc, char **argv)
{
int i = 0;
g_test_init(&argc, &argv, NULL);
while (visitors[i].type != NULL) {
add_visitor_type(&visitors[i]);
i++;
}
g_test_run();
return 0;
}
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