tests/test-visitor-serialization.c

   1 /*
   2  * Unit-tests for visitor-based serialization
   3  *
   4  * Copyright (C) 2014-2015 Red Hat, Inc.
   5  * Copyright IBM, Corp. 2012
   6  *
   7  * Authors:
   8  *  Michael Roth <mdroth@linux.vnet.ibm.com>
   9  *
  10  * This work is licensed under the terms of the GNU GPL, version 2 or later.
  11  * See the COPYING file in the top-level directory.
  12  */
  13
  14 #include <glib.h>
  15 #include <stdlib.h>
  16 #include <stdint.h>
  17 #include <float.h>
  18
  19 #include "qemu-common.h"
  20 #include "test-qapi-types.h"
  21 #include "test-qapi-visit.h"
  22 #include "qapi/qmp/types.h"
  23 #include "qapi/qmp-input-visitor.h"
  24 #include "qapi/qmp-output-visitor.h"
  25 #include "qapi/string-input-visitor.h"
  26 #include "qapi/string-output-visitor.h"
  27 #include "qapi-types.h"
  28 #include "qapi-visit.h"
  29 #include "qapi/dealloc-visitor.h"
  30
  31 enum PrimitiveTypeKind {
  32     PTYPE_STRING = 0,
  33     PTYPE_BOOLEAN,
  34     PTYPE_NUMBER,
  35     PTYPE_INTEGER,
  36     PTYPE_U8,
  37     PTYPE_U16,
  38     PTYPE_U32,
  39     PTYPE_U64,
  40     PTYPE_S8,
  41     PTYPE_S16,
  42     PTYPE_S32,
  43     PTYPE_S64,
  44     PTYPE_EOL,
  45 };
  46
  47 typedef struct PrimitiveType {
  48     union {
  49         const char *string;
  50         bool boolean;
  51         double number;
  52         int64_t integer;
  53         uint8_t u8;
  54         uint16_t u16;
  55         uint32_t u32;
  56         uint64_t u64;
  57         int8_t s8;
  58         int16_t s16;
  59         int32_t s32;
  60         int64_t s64;
  61         intmax_t max;
  62     } value;
  63     enum PrimitiveTypeKind type;
  64     const char *description;
  65 } PrimitiveType;
  66
  67 typedef struct PrimitiveList {
  68     union {
  69         strList *strings;
  70         boolList *booleans;
  71         numberList *numbers;
  72         intList *integers;
  73         int8List *s8_integers;
  74         int16List *s16_integers;
  75         int32List *s32_integers;
  76         int64List *s64_integers;
  77         uint8List *u8_integers;
  78         uint16List *u16_integers;
  79         uint32List *u32_integers;
  80         uint64List *u64_integers;
  81     } value;
  82     enum PrimitiveTypeKind type;
  83     const char *description;
  84 } PrimitiveList;
  85
  86 /* test helpers */
  87
  88 typedef void (*VisitorFunc)(Visitor *v, void **native, Error **errp);
  89
  90 static void dealloc_helper(void *native_in, VisitorFunc visit, Error **errp)
  91 {
  92     QapiDeallocVisitor *qdv = qapi_dealloc_visitor_new();
  93
  94     visit(qapi_dealloc_get_visitor(qdv), &native_in, errp);
  95
  96     qapi_dealloc_visitor_cleanup(qdv);
  97 }
  98
  99 static void visit_primitive_type(Visitor *v, void **native, Error **errp)
 100 {
 101     PrimitiveType *pt = *native;
 102     switch(pt->type) {
 103     case PTYPE_STRING:
 104         visit_type_str(v, (char **)&pt->value.string, NULL, errp);
 105         break;
 106     case PTYPE_BOOLEAN:
 107         visit_type_bool(v, &pt->value.boolean, NULL, errp);
 108         break;
 109     case PTYPE_NUMBER:
 110         visit_type_number(v, &pt->value.number, NULL, errp);
 111         break;
 112     case PTYPE_INTEGER:
 113         visit_type_int(v, &pt->value.integer, NULL, errp);
 114         break;
 115     case PTYPE_U8:
 116         visit_type_uint8(v, &pt->value.u8, NULL, errp);
 117         break;
 118     case PTYPE_U16:
 119         visit_type_uint16(v, &pt->value.u16, NULL, errp);
 120         break;
 121     case PTYPE_U32:
 122         visit_type_uint32(v, &pt->value.u32, NULL, errp);
 123         break;
 124     case PTYPE_U64:
 125         visit_type_uint64(v, &pt->value.u64, NULL, errp);
 126         break;
 127     case PTYPE_S8:
 128         visit_type_int8(v, &pt->value.s8, NULL, errp);
 129         break;
 130     case PTYPE_S16:
 131         visit_type_int16(v, &pt->value.s16, NULL, errp);
 132         break;
 133     case PTYPE_S32:
 134         visit_type_int32(v, &pt->value.s32, NULL, errp);
 135         break;
 136     case PTYPE_S64:
 137         visit_type_int64(v, &pt->value.s64, NULL, errp);
 138         break;
 139     case PTYPE_EOL:
 140         g_assert_not_reached();
 141     }
 142 }
 143
 144 static void visit_primitive_list(Visitor *v, void **native, Error **errp)
 145 {
 146     PrimitiveList *pl = *native;
 147     switch (pl->type) {
 148     case PTYPE_STRING:
 149         visit_type_strList(v, &pl->value.strings, NULL, errp);
 150         break;
 151     case PTYPE_BOOLEAN:
 152         visit_type_boolList(v, &pl->value.booleans, NULL, errp);
 153         break;
 154     case PTYPE_NUMBER:
 155         visit_type_numberList(v, &pl->value.numbers, NULL, errp);
 156         break;
 157     case PTYPE_INTEGER:
 158         visit_type_intList(v, &pl->value.integers, NULL, errp);
 159         break;
 160     case PTYPE_S8:
 161         visit_type_int8List(v, &pl->value.s8_integers, NULL, errp);
 162         break;
 163     case PTYPE_S16:
 164         visit_type_int16List(v, &pl->value.s16_integers, NULL, errp);
 165         break;
 166     case PTYPE_S32:
 167         visit_type_int32List(v, &pl->value.s32_integers, NULL, errp);
 168         break;
 169     case PTYPE_S64:
 170         visit_type_int64List(v, &pl->value.s64_integers, NULL, errp);
 171         break;
 172     case PTYPE_U8:
 173         visit_type_uint8List(v, &pl->value.u8_integers, NULL, errp);
 174         break;
 175     case PTYPE_U16:
 176         visit_type_uint16List(v, &pl->value.u16_integers, NULL, errp);
 177         break;
 178     case PTYPE_U32:
 179         visit_type_uint32List(v, &pl->value.u32_integers, NULL, errp);
 180         break;
 181     case PTYPE_U64:
 182         visit_type_uint64List(v, &pl->value.u64_integers, NULL, errp);
 183         break;
 184     default:
 185         g_assert_not_reached();
 186     }
 187 }
 188
 189 typedef struct TestStruct
 190 {
 191     int64_t integer;
 192     bool boolean;
 193     char *string;
 194 } TestStruct;
 195
 196 static void visit_type_TestStruct(Visitor *v, TestStruct **obj,
 197                                   const char *name, Error **errp)
 198 {
 199     Error *err = NULL;
 200
 201     visit_start_struct(v, (void **)obj, NULL, name, sizeof(TestStruct), &err);
 202     if (err) {
 203         goto out;
 204     }
 205
 206     visit_type_int(v, &(*obj)->integer, "integer", &err);
 207     if (err) {
 208         goto out_end;
 209     }
 210     visit_type_bool(v, &(*obj)->boolean, "boolean", &err);
 211     if (err) {
 212         goto out_end;
 213     }
 214     visit_type_str(v, &(*obj)->string, "string", &err);
 215
 216 out_end:
 217     error_propagate(errp, err);
 218     err = NULL;
 219     visit_end_struct(v, &err);
 220 out:
 221     error_propagate(errp, err);
 222 }
 223
 224 static TestStruct *struct_create(void)
 225 {
 226     TestStruct *ts = g_malloc0(sizeof(*ts));
 227     ts->integer = -42;
 228     ts->boolean = true;
 229     ts->string = strdup("test string");
 230     return ts;
 231 }
 232
 233 static void struct_compare(TestStruct *ts1, TestStruct *ts2)
 234 {
 235     g_assert(ts1);
 236     g_assert(ts2);
 237     g_assert_cmpint(ts1->integer, ==, ts2->integer);
 238     g_assert(ts1->boolean == ts2->boolean);
 239     g_assert_cmpstr(ts1->string, ==, ts2->string);
 240 }
 241
 242 static void struct_cleanup(TestStruct *ts)
 243 {
 244     g_free(ts->string);
 245     g_free(ts);
 246 }
 247
 248 static void visit_struct(Visitor *v, void **native, Error **errp)
 249 {
 250     visit_type_TestStruct(v, (TestStruct **)native, NULL, errp);
 251 }
 252
 253 static UserDefTwo *nested_struct_create(void)
 254 {
 255     UserDefTwo *udnp = g_malloc0(sizeof(*udnp));
 256     udnp->string0 = strdup("test_string0");
 257     udnp->dict1 = g_malloc0(sizeof(*udnp->dict1));
 258     udnp->dict1->string1 = strdup("test_string1");
 259     udnp->dict1->dict2 = g_malloc0(sizeof(*udnp->dict1->dict2));
 260     udnp->dict1->dict2->userdef = g_new0(UserDefOne, 1);
 261     udnp->dict1->dict2->userdef->base = g_new0(UserDefZero, 1);
 262     udnp->dict1->dict2->userdef->base->integer = 42;
 263     udnp->dict1->dict2->userdef->string = strdup("test_string");
 264     udnp->dict1->dict2->string = strdup("test_string2");
 265     udnp->dict1->dict3 = g_malloc0(sizeof(*udnp->dict1->dict3));
 266     udnp->dict1->has_dict3 = true;
 267     udnp->dict1->dict3->userdef = g_new0(UserDefOne, 1);
 268     udnp->dict1->dict3->userdef->base = g_new0(UserDefZero, 1);
 269     udnp->dict1->dict3->userdef->base->integer = 43;
 270     udnp->dict1->dict3->userdef->string = strdup("test_string");
 271     udnp->dict1->dict3->string = strdup("test_string3");
 272     return udnp;
 273 }
 274
 275 static void nested_struct_compare(UserDefTwo *udnp1, UserDefTwo *udnp2)
 276 {
 277     g_assert(udnp1);
 278     g_assert(udnp2);
 279     g_assert_cmpstr(udnp1->string0, ==, udnp2->string0);
 280     g_assert_cmpstr(udnp1->dict1->string1, ==, udnp2->dict1->string1);
 281     g_assert_cmpint(udnp1->dict1->dict2->userdef->base->integer, ==,
 282                     udnp2->dict1->dict2->userdef->base->integer);
 283     g_assert_cmpstr(udnp1->dict1->dict2->userdef->string, ==,
 284                     udnp2->dict1->dict2->userdef->string);
 285     g_assert_cmpstr(udnp1->dict1->dict2->string, ==,
 286                     udnp2->dict1->dict2->string);
 287     g_assert(udnp1->dict1->has_dict3 == udnp2->dict1->has_dict3);
 288     g_assert_cmpint(udnp1->dict1->dict3->userdef->base->integer, ==,
 289                     udnp2->dict1->dict3->userdef->base->integer);
 290     g_assert_cmpstr(udnp1->dict1->dict3->userdef->string, ==,
 291                     udnp2->dict1->dict3->userdef->string);
 292     g_assert_cmpstr(udnp1->dict1->dict3->string, ==,
 293                     udnp2->dict1->dict3->string);
 294 }
 295
 296 static void nested_struct_cleanup(UserDefTwo *udnp)
 297 {
 298     qapi_free_UserDefTwo(udnp);
 299 }
 300
 301 static void visit_nested_struct(Visitor *v, void **native, Error **errp)
 302 {
 303     visit_type_UserDefTwo(v, (UserDefTwo **)native, NULL, errp);
 304 }
 305
 306 static void visit_nested_struct_list(Visitor *v, void **native, Error **errp)
 307 {
 308     visit_type_UserDefTwoList(v, (UserDefTwoList **)native, NULL, errp);
 309 }
 310
 311 /* test cases */
 312
 313 typedef enum VisitorCapabilities {
 314     VCAP_PRIMITIVES = 1,
 315     VCAP_STRUCTURES = 2,
 316     VCAP_LISTS = 4,
 317     VCAP_PRIMITIVE_LISTS = 8,
 318 } VisitorCapabilities;
 319
 320 typedef struct SerializeOps {
 321     void (*serialize)(void *native_in, void **datap,
 322                       VisitorFunc visit, Error **errp);
 323     void (*deserialize)(void **native_out, void *datap,
 324                             VisitorFunc visit, Error **errp);
 325     void (*cleanup)(void *datap);
 326     const char *type;
 327     VisitorCapabilities caps;
 328 } SerializeOps;
 329
 330 typedef struct TestArgs {
 331     const SerializeOps *ops;
 332     void *test_data;
 333 } TestArgs;
 334
 335 static void test_primitives(gconstpointer opaque)
 336 {
 337     TestArgs *args = (TestArgs *) opaque;
 338     const SerializeOps *ops = args->ops;
 339     PrimitiveType *pt = args->test_data;
 340     PrimitiveType *pt_copy = g_malloc0(sizeof(*pt_copy));
 341     Error *err = NULL;
 342     void *serialize_data;
 343
 344     pt_copy->type = pt->type;
 345     ops->serialize(pt, &serialize_data, visit_primitive_type, &err);
 346     ops->deserialize((void **)&pt_copy, serialize_data, visit_primitive_type, &err);
 347
 348     g_assert(err == NULL);
 349     g_assert(pt_copy != NULL);
 350     if (pt->type == PTYPE_STRING) {
 351         g_assert_cmpstr(pt->value.string, ==, pt_copy->value.string);
 352         g_free((char *)pt_copy->value.string);
 353     } else if (pt->type == PTYPE_NUMBER) {
 354         GString *double_expected = g_string_new("");
 355         GString *double_actual = g_string_new("");
 356         /* we serialize with %f for our reference visitors, so rather than fuzzy
 357          * floating math to test "equality", just compare the formatted values
 358          */
 359         g_string_printf(double_expected, "%.6f", pt->value.number);
 360         g_string_printf(double_actual, "%.6f", pt_copy->value.number);
 361         g_assert_cmpstr(double_actual->str, ==, double_expected->str);
 362
 363         g_string_free(double_expected, true);
 364         g_string_free(double_actual, true);
 365     } else if (pt->type == PTYPE_BOOLEAN) {
 366         g_assert_cmpint(!!pt->value.max, ==, !!pt->value.max);
 367     } else {
 368         g_assert_cmpint(pt->value.max, ==, pt_copy->value.max);
 369     }
 370
 371     ops->cleanup(serialize_data);
 372     g_free(args);
 373     g_free(pt_copy);
 374 }
 375
 376 static void test_primitive_lists(gconstpointer opaque)
 377 {
 378     TestArgs *args = (TestArgs *) opaque;
 379     const SerializeOps *ops = args->ops;
 380     PrimitiveType *pt = args->test_data;
 381     PrimitiveList pl = { .value = { NULL } };
 382     PrimitiveList pl_copy = { .value = { NULL } };
 383     PrimitiveList *pl_copy_ptr = &pl_copy;
 384     Error *err = NULL;
 385     void *serialize_data;
 386     void *cur_head = NULL;
 387     int i;
 388
 389     pl.type = pl_copy.type = pt->type;
 390
 391     /* build up our list of primitive types */
 392     for (i = 0; i < 32; i++) {
 393         switch (pl.type) {
 394         case PTYPE_STRING: {
 395             strList *tmp = g_new0(strList, 1);
 396             tmp->value = g_strdup(pt->value.string);
 397             if (pl.value.strings == NULL) {
 398                 pl.value.strings = tmp;
 399             } else {
 400                 tmp->next = pl.value.strings;
 401                 pl.value.strings = tmp;
 402             }
 403             break;
 404         }
 405         case PTYPE_INTEGER: {
 406             intList *tmp = g_new0(intList, 1);
 407             tmp->value = pt->value.integer;
 408             if (pl.value.integers == NULL) {
 409                 pl.value.integers = tmp;
 410             } else {
 411                 tmp->next = pl.value.integers;
 412                 pl.value.integers = tmp;
 413             }
 414             break;
 415         }
 416         case PTYPE_S8: {
 417             int8List *tmp = g_new0(int8List, 1);
 418             tmp->value = pt->value.s8;
 419             if (pl.value.s8_integers == NULL) {
 420                 pl.value.s8_integers = tmp;
 421             } else {
 422                 tmp->next = pl.value.s8_integers;
 423                 pl.value.s8_integers = tmp;
 424             }
 425             break;
 426         }
 427         case PTYPE_S16: {
 428             int16List *tmp = g_new0(int16List, 1);
 429             tmp->value = pt->value.s16;
 430             if (pl.value.s16_integers == NULL) {
 431                 pl.value.s16_integers = tmp;
 432             } else {
 433                 tmp->next = pl.value.s16_integers;
 434                 pl.value.s16_integers = tmp;
 435             }
 436             break;
 437         }
 438         case PTYPE_S32: {
 439             int32List *tmp = g_new0(int32List, 1);
 440             tmp->value = pt->value.s32;
 441             if (pl.value.s32_integers == NULL) {
 442                 pl.value.s32_integers = tmp;
 443             } else {
 444                 tmp->next = pl.value.s32_integers;
 445                 pl.value.s32_integers = tmp;
 446             }
 447             break;
 448         }
 449         case PTYPE_S64: {
 450             int64List *tmp = g_new0(int64List, 1);
 451             tmp->value = pt->value.s64;
 452             if (pl.value.s64_integers == NULL) {
 453                 pl.value.s64_integers = tmp;
 454             } else {
 455                 tmp->next = pl.value.s64_integers;
 456                 pl.value.s64_integers = tmp;
 457             }
 458             break;
 459         }
 460         case PTYPE_U8: {
 461             uint8List *tmp = g_new0(uint8List, 1);
 462             tmp->value = pt->value.u8;
 463             if (pl.value.u8_integers == NULL) {
 464                 pl.value.u8_integers = tmp;
 465             } else {
 466                 tmp->next = pl.value.u8_integers;
 467                 pl.value.u8_integers = tmp;
 468             }
 469             break;
 470         }
 471         case PTYPE_U16: {
 472             uint16List *tmp = g_new0(uint16List, 1);
 473             tmp->value = pt->value.u16;
 474             if (pl.value.u16_integers == NULL) {
 475                 pl.value.u16_integers = tmp;
 476             } else {
 477                 tmp->next = pl.value.u16_integers;
 478                 pl.value.u16_integers = tmp;
 479             }
 480             break;
 481         }
 482         case PTYPE_U32: {
 483             uint32List *tmp = g_new0(uint32List, 1);
 484             tmp->value = pt->value.u32;
 485             if (pl.value.u32_integers == NULL) {
 486                 pl.value.u32_integers = tmp;
 487             } else {
 488                 tmp->next = pl.value.u32_integers;
 489                 pl.value.u32_integers = tmp;
 490             }
 491             break;
 492         }
 493         case PTYPE_U64: {
 494             uint64List *tmp = g_new0(uint64List, 1);
 495             tmp->value = pt->value.u64;
 496             if (pl.value.u64_integers == NULL) {
 497                 pl.value.u64_integers = tmp;
 498             } else {
 499                 tmp->next = pl.value.u64_integers;
 500                 pl.value.u64_integers = tmp;
 501             }
 502             break;
 503         }
 504         case PTYPE_NUMBER: {
 505             numberList *tmp = g_new0(numberList, 1);
 506             tmp->value = pt->value.number;
 507             if (pl.value.numbers == NULL) {
 508                 pl.value.numbers = tmp;
 509             } else {
 510                 tmp->next = pl.value.numbers;
 511                 pl.value.numbers = tmp;
 512             }
 513             break;
 514         }
 515         case PTYPE_BOOLEAN: {
 516             boolList *tmp = g_new0(boolList, 1);
 517             tmp->value = pt->value.boolean;
 518             if (pl.value.booleans == NULL) {
 519                 pl.value.booleans = tmp;
 520             } else {
 521                 tmp->next = pl.value.booleans;
 522                 pl.value.booleans = tmp;
 523             }
 524             break;
 525         }
 526         default:
 527             g_assert_not_reached();
 528         }
 529     }
 530
 531     ops->serialize((void **)&pl, &serialize_data, visit_primitive_list, &err);
 532     ops->deserialize((void **)&pl_copy_ptr, serialize_data, visit_primitive_list, &err);
 533
 534     g_assert(err == NULL);
 535     i = 0;
 536
 537     /* compare our deserialized list of primitives to the original */
 538     do {
 539         switch (pl_copy.type) {
 540         case PTYPE_STRING: {
 541             strList *ptr;
 542             if (cur_head) {
 543                 ptr = cur_head;
 544                 cur_head = ptr->next;
 545             } else {
 546                 cur_head = ptr = pl_copy.value.strings;
 547             }
 548             g_assert_cmpstr(pt->value.string, ==, ptr->value);
 549             break;
 550         }
 551         case PTYPE_INTEGER: {
 552             intList *ptr;
 553             if (cur_head) {
 554                 ptr = cur_head;
 555                 cur_head = ptr->next;
 556             } else {
 557                 cur_head = ptr = pl_copy.value.integers;
 558             }
 559             g_assert_cmpint(pt->value.integer, ==, ptr->value);
 560             break;
 561         }
 562         case PTYPE_S8: {
 563             int8List *ptr;
 564             if (cur_head) {
 565                 ptr = cur_head;
 566                 cur_head = ptr->next;
 567             } else {
 568                 cur_head = ptr = pl_copy.value.s8_integers;
 569             }
 570             g_assert_cmpint(pt->value.s8, ==, ptr->value);
 571             break;
 572         }
 573         case PTYPE_S16: {
 574             int16List *ptr;
 575             if (cur_head) {
 576                 ptr = cur_head;
 577                 cur_head = ptr->next;
 578             } else {
 579                 cur_head = ptr = pl_copy.value.s16_integers;
 580             }
 581             g_assert_cmpint(pt->value.s16, ==, ptr->value);
 582             break;
 583         }
 584         case PTYPE_S32: {
 585             int32List *ptr;
 586             if (cur_head) {
 587                 ptr = cur_head;
 588                 cur_head = ptr->next;
 589             } else {
 590                 cur_head = ptr = pl_copy.value.s32_integers;
 591             }
 592             g_assert_cmpint(pt->value.s32, ==, ptr->value);
 593             break;
 594         }
 595         case PTYPE_S64: {
 596             int64List *ptr;
 597             if (cur_head) {
 598                 ptr = cur_head;
 599                 cur_head = ptr->next;
 600             } else {
 601                 cur_head = ptr = pl_copy.value.s64_integers;
 602             }
 603             g_assert_cmpint(pt->value.s64, ==, ptr->value);
 604             break;
 605         }
 606         case PTYPE_U8: {
 607             uint8List *ptr;
 608             if (cur_head) {
 609                 ptr = cur_head;
 610                 cur_head = ptr->next;
 611             } else {
 612                 cur_head = ptr = pl_copy.value.u8_integers;
 613             }
 614             g_assert_cmpint(pt->value.u8, ==, ptr->value);
 615             break;
 616         }
 617         case PTYPE_U16: {
 618             uint16List *ptr;
 619             if (cur_head) {
 620                 ptr = cur_head;
 621                 cur_head = ptr->next;
 622             } else {
 623                 cur_head = ptr = pl_copy.value.u16_integers;
 624             }
 625             g_assert_cmpint(pt->value.u16, ==, ptr->value);
 626             break;
 627         }
 628         case PTYPE_U32: {
 629             uint32List *ptr;
 630             if (cur_head) {
 631                 ptr = cur_head;
 632                 cur_head = ptr->next;
 633             } else {
 634                 cur_head = ptr = pl_copy.value.u32_integers;
 635             }
 636             g_assert_cmpint(pt->value.u32, ==, ptr->value);
 637             break;
 638         }
 639         case PTYPE_U64: {
 640             uint64List *ptr;
 641             if (cur_head) {
 642                 ptr = cur_head;
 643                 cur_head = ptr->next;
 644             } else {
 645                 cur_head = ptr = pl_copy.value.u64_integers;
 646             }
 647             g_assert_cmpint(pt->value.u64, ==, ptr->value);
 648             break;
 649         }
 650         case PTYPE_NUMBER: {
 651             numberList *ptr;
 652             GString *double_expected = g_string_new("");
 653             GString *double_actual = g_string_new("");
 654             if (cur_head) {
 655                 ptr = cur_head;
 656                 cur_head = ptr->next;
 657             } else {
 658                 cur_head = ptr = pl_copy.value.numbers;
 659             }
 660             /* we serialize with %f for our reference visitors, so rather than
 661              * fuzzy floating math to test "equality", just compare the
 662              * formatted values
 663              */
 664             g_string_printf(double_expected, "%.6f", pt->value.number);
 665             g_string_printf(double_actual, "%.6f", ptr->value);
 666             g_assert_cmpstr(double_actual->str, ==, double_expected->str);
 667             g_string_free(double_expected, true);
 668             g_string_free(double_actual, true);
 669             break;
 670         }
 671         case PTYPE_BOOLEAN: {
 672             boolList *ptr;
 673             if (cur_head) {
 674                 ptr = cur_head;
 675                 cur_head = ptr->next;
 676             } else {
 677                 cur_head = ptr = pl_copy.value.booleans;
 678             }
 679             g_assert_cmpint(!!pt->value.boolean, ==, !!ptr->value);
 680             break;
 681         }
 682         default:
 683             g_assert_not_reached();
 684         }
 685         i++;
 686     } while (cur_head);
 687
 688     g_assert_cmpint(i, ==, 33);
 689
 690     ops->cleanup(serialize_data);
 691     dealloc_helper(&pl, visit_primitive_list, &err);
 692     g_assert(!err);
 693     dealloc_helper(&pl_copy, visit_primitive_list, &err);
 694     g_assert(!err);
 695     g_free(args);
 696 }
 697
 698 static void test_struct(gconstpointer opaque)
 699 {
 700     TestArgs *args = (TestArgs *) opaque;
 701     const SerializeOps *ops = args->ops;
 702     TestStruct *ts = struct_create();
 703     TestStruct *ts_copy = NULL;
 704     Error *err = NULL;
 705     void *serialize_data;
 706
 707     ops->serialize(ts, &serialize_data, visit_struct, &err);
 708     ops->deserialize((void **)&ts_copy, serialize_data, visit_struct, &err);
 709
 710     g_assert(err == NULL);
 711     struct_compare(ts, ts_copy);
 712
 713     struct_cleanup(ts);
 714     struct_cleanup(ts_copy);
 715
 716     ops->cleanup(serialize_data);
 717     g_free(args);
 718 }
 719
 720 static void test_nested_struct(gconstpointer opaque)
 721 {
 722     TestArgs *args = (TestArgs *) opaque;
 723     const SerializeOps *ops = args->ops;
 724     UserDefTwo *udnp = nested_struct_create();
 725     UserDefTwo *udnp_copy = NULL;
 726     Error *err = NULL;
 727     void *serialize_data;
 728
 729     ops->serialize(udnp, &serialize_data, visit_nested_struct, &err);
 730     ops->deserialize((void **)&udnp_copy, serialize_data, visit_nested_struct,
 731                      &err);
 732
 733     g_assert(err == NULL);
 734     nested_struct_compare(udnp, udnp_copy);
 735
 736     nested_struct_cleanup(udnp);
 737     nested_struct_cleanup(udnp_copy);
 738
 739     ops->cleanup(serialize_data);
 740     g_free(args);
 741 }
 742
 743 static void test_nested_struct_list(gconstpointer opaque)
 744 {
 745     TestArgs *args = (TestArgs *) opaque;
 746     const SerializeOps *ops = args->ops;
 747     UserDefTwoList *listp = NULL, *tmp, *tmp_copy, *listp_copy = NULL;
 748     Error *err = NULL;
 749     void *serialize_data;
 750     int i = 0;
 751
 752     for (i = 0; i < 8; i++) {
 753         tmp = g_new0(UserDefTwoList, 1);
 754         tmp->value = nested_struct_create();
 755         tmp->next = listp;
 756         listp = tmp;
 757     }
 758
 759     ops->serialize(listp, &serialize_data, visit_nested_struct_list, &err);
 760     ops->deserialize((void **)&listp_copy, serialize_data,
 761                      visit_nested_struct_list, &err);
 762
 763     g_assert(err == NULL);
 764
 765     tmp = listp;
 766     tmp_copy = listp_copy;
 767     while (listp_copy) {
 768         g_assert(listp);
 769         nested_struct_compare(listp->value, listp_copy->value);
 770         listp = listp->next;
 771         listp_copy = listp_copy->next;
 772     }
 773
 774     qapi_free_UserDefTwoList(tmp);
 775     qapi_free_UserDefTwoList(tmp_copy);
 776
 777     ops->cleanup(serialize_data);
 778     g_free(args);
 779 }
 780
 781 static PrimitiveType pt_values[] = {
 782     /* string tests */
 783     {
 784         .description = "string_empty",
 785         .type = PTYPE_STRING,
 786         .value.string = "",
 787     },
 788     {
 789         .description = "string_whitespace",
 790         .type = PTYPE_STRING,
 791         .value.string = "a b  c\td",
 792     },
 793     {
 794         .description = "string_newlines",
 795         .type = PTYPE_STRING,
 796         .value.string = "a\nb\n",
 797     },
 798     {
 799         .description = "string_commas",
 800         .type = PTYPE_STRING,
 801         .value.string = "a,b, c,d",
 802     },
 803     {
 804         .description = "string_single_quoted",
 805         .type = PTYPE_STRING,
 806         .value.string = "'a b',cd",
 807     },
 808     {
 809         .description = "string_double_quoted",
 810         .type = PTYPE_STRING,
 811         .value.string = "\"a b\",cd",
 812     },
 813     /* boolean tests */
 814     {
 815         .description = "boolean_true1",
 816         .type = PTYPE_BOOLEAN,
 817         .value.boolean = true,
 818     },
 819     {
 820         .description = "boolean_true2",
 821         .type = PTYPE_BOOLEAN,
 822         .value.boolean = 8,
 823     },
 824     {
 825         .description = "boolean_true3",
 826         .type = PTYPE_BOOLEAN,
 827         .value.boolean = -1,
 828     },
 829     {
 830         .description = "boolean_false1",
 831         .type = PTYPE_BOOLEAN,
 832         .value.boolean = false,
 833     },
 834     {
 835         .description = "boolean_false2",
 836         .type = PTYPE_BOOLEAN,
 837         .value.boolean = 0,
 838     },
 839     /* number tests (double) */
 840     /* note: we format these to %.6f before comparing, since that's how
 841      * we serialize them and it doesn't make sense to check precision
 842      * beyond that.
 843      */
 844     {
 845         .description = "number_sanity1",
 846         .type = PTYPE_NUMBER,
 847         .value.number = -1,
 848     },
 849     {
 850         .description = "number_sanity2",
 851         .type = PTYPE_NUMBER,
 852         .value.number = 3.14159265,
 853     },
 854     {
 855         .description = "number_min",
 856         .type = PTYPE_NUMBER,
 857         .value.number = DBL_MIN,
 858     },
 859     {
 860         .description = "number_max",
 861         .type = PTYPE_NUMBER,
 862         .value.number = DBL_MAX,
 863     },
 864     /* integer tests (int64) */
 865     {
 866         .description = "integer_sanity1",
 867         .type = PTYPE_INTEGER,
 868         .value.integer = -1,
 869     },
 870     {
 871         .description = "integer_sanity2",
 872         .type = PTYPE_INTEGER,
 873         .value.integer = INT64_MAX / 2 + 1,
 874     },
 875     {
 876         .description = "integer_min",
 877         .type = PTYPE_INTEGER,
 878         .value.integer = INT64_MIN,
 879     },
 880     {
 881         .description = "integer_max",
 882         .type = PTYPE_INTEGER,
 883         .value.integer = INT64_MAX,
 884     },
 885     /* uint8 tests */
 886     {
 887         .description = "uint8_sanity1",
 888         .type = PTYPE_U8,
 889         .value.u8 = 1,
 890     },
 891     {
 892         .description = "uint8_sanity2",
 893         .type = PTYPE_U8,
 894         .value.u8 = UINT8_MAX / 2 + 1,
 895     },
 896     {
 897         .description = "uint8_min",
 898         .type = PTYPE_U8,
 899         .value.u8 = 0,
 900     },
 901     {
 902         .description = "uint8_max",
 903         .type = PTYPE_U8,
 904         .value.u8 = UINT8_MAX,
 905     },
 906     /* uint16 tests */
 907     {
 908         .description = "uint16_sanity1",
 909         .type = PTYPE_U16,
 910         .value.u16 = 1,
 911     },
 912     {
 913         .description = "uint16_sanity2",
 914         .type = PTYPE_U16,
 915         .value.u16 = UINT16_MAX / 2 + 1,
 916     },
 917     {
 918         .description = "uint16_min",
 919         .type = PTYPE_U16,
 920         .value.u16 = 0,
 921     },
 922     {
 923         .description = "uint16_max",
 924         .type = PTYPE_U16,
 925         .value.u16 = UINT16_MAX,
 926     },
 927     /* uint32 tests */
 928     {
 929         .description = "uint32_sanity1",
 930         .type = PTYPE_U32,
 931         .value.u32 = 1,
 932     },
 933     {
 934         .description = "uint32_sanity2",
 935         .type = PTYPE_U32,
 936         .value.u32 = UINT32_MAX / 2 + 1,
 937     },
 938     {
 939         .description = "uint32_min",
 940         .type = PTYPE_U32,
 941         .value.u32 = 0,
 942     },
 943     {
 944         .description = "uint32_max",
 945         .type = PTYPE_U32,
 946         .value.u32 = UINT32_MAX,
 947     },
 948     /* uint64 tests */
 949     {
 950         .description = "uint64_sanity1",
 951         .type = PTYPE_U64,
 952         .value.u64 = 1,
 953     },
 954     {
 955         .description = "uint64_sanity2",
 956         .type = PTYPE_U64,
 957         .value.u64 = UINT64_MAX / 2 + 1,
 958     },
 959     {
 960         .description = "uint64_min",
 961         .type = PTYPE_U64,
 962         .value.u64 = 0,
 963     },
 964     {
 965         .description = "uint64_max",
 966         .type = PTYPE_U64,
 967         .value.u64 = UINT64_MAX,
 968     },
 969     /* int8 tests */
 970     {
 971         .description = "int8_sanity1",
 972         .type = PTYPE_S8,
 973         .value.s8 = -1,
 974     },
 975     {
 976         .description = "int8_sanity2",
 977         .type = PTYPE_S8,
 978         .value.s8 = INT8_MAX / 2 + 1,
 979     },
 980     {
 981         .description = "int8_min",
 982         .type = PTYPE_S8,
 983         .value.s8 = INT8_MIN,
 984     },
 985     {
 986         .description = "int8_max",
 987         .type = PTYPE_S8,
 988         .value.s8 = INT8_MAX,
 989     },
 990     /* int16 tests */
 991     {
 992         .description = "int16_sanity1",
 993         .type = PTYPE_S16,
 994         .value.s16 = -1,
 995     },
 996     {
 997         .description = "int16_sanity2",
 998         .type = PTYPE_S16,
 999         .value.s16 = INT16_MAX / 2 + 1,
1000     },
1001     {
1002         .description = "int16_min",
1003         .type = PTYPE_S16,
1004         .value.s16 = INT16_MIN,
1005     },
1006     {
1007         .description = "int16_max",
1008         .type = PTYPE_S16,
1009         .value.s16 = INT16_MAX,
1010     },
1011     /* int32 tests */
1012     {
1013         .description = "int32_sanity1",
1014         .type = PTYPE_S32,
1015         .value.s32 = -1,
1016     },
1017     {
1018         .description = "int32_sanity2",
1019         .type = PTYPE_S32,
1020         .value.s32 = INT32_MAX / 2 + 1,
1021     },
1022     {
1023         .description = "int32_min",
1024         .type = PTYPE_S32,
1025         .value.s32 = INT32_MIN,
1026     },
1027     {
1028         .description = "int32_max",
1029         .type = PTYPE_S32,
1030         .value.s32 = INT32_MAX,
1031     },
1032     /* int64 tests */
1033     {
1034         .description = "int64_sanity1",
1035         .type = PTYPE_S64,
1036         .value.s64 = -1,
1037     },
1038     {
1039         .description = "int64_sanity2",
1040         .type = PTYPE_S64,
1041         .value.s64 = INT64_MAX / 2 + 1,
1042     },
1043     {
1044         .description = "int64_min",
1045         .type = PTYPE_S64,
1046         .value.s64 = INT64_MIN,
1047     },
1048     {
1049         .description = "int64_max",
1050         .type = PTYPE_S64,
1051         .value.s64 = INT64_MAX,
1052     },
1053     { .type = PTYPE_EOL }
1054 };
1055
1056 /* visitor-specific op implementations */
1057
1058 typedef struct QmpSerializeData {
1059     QmpOutputVisitor *qov;
1060     QmpInputVisitor *qiv;
1061 } QmpSerializeData;
1062
1063 static void qmp_serialize(void *native_in, void **datap,
1064                           VisitorFunc visit, Error **errp)
1065 {
1066     QmpSerializeData *d = g_malloc0(sizeof(*d));
1067
1068     d->qov = qmp_output_visitor_new();
1069     visit(qmp_output_get_visitor(d->qov), &native_in, errp);
1070     *datap = d;
1071 }
1072
1073 static void qmp_deserialize(void **native_out, void *datap,
1074                             VisitorFunc visit, Error **errp)
1075 {
1076     QmpSerializeData *d = datap;
1077     QString *output_json;
1078     QObject *obj_orig, *obj;
1079
1080     obj_orig = qmp_output_get_qobject(d->qov);
1081     output_json = qobject_to_json(obj_orig);
1082     obj = qobject_from_json(qstring_get_str(output_json));
1083
1084     QDECREF(output_json);
1085     d->qiv = qmp_input_visitor_new(obj);
1086     qobject_decref(obj_orig);
1087     qobject_decref(obj);
1088     visit(qmp_input_get_visitor(d->qiv), native_out, errp);
1089 }
1090
1091 static void qmp_cleanup(void *datap)
1092 {
1093     QmpSerializeData *d = datap;
1094     qmp_output_visitor_cleanup(d->qov);
1095     qmp_input_visitor_cleanup(d->qiv);
1096
1097     g_free(d);
1098 }
1099
1100 typedef struct StringSerializeData {
1101     char *string;
1102     StringOutputVisitor *sov;
1103     StringInputVisitor *siv;
1104 } StringSerializeData;
1105
1106 static void string_serialize(void *native_in, void **datap,
1107                              VisitorFunc visit, Error **errp)
1108 {
1109     StringSerializeData *d = g_malloc0(sizeof(*d));
1110
1111     d->sov = string_output_visitor_new(false);
1112     visit(string_output_get_visitor(d->sov), &native_in, errp);
1113     *datap = d;
1114 }
1115
1116 static void string_deserialize(void **native_out, void *datap,
1117                                VisitorFunc visit, Error **errp)
1118 {
1119     StringSerializeData *d = datap;
1120
1121     d->string = string_output_get_string(d->sov);
1122     d->siv = string_input_visitor_new(d->string);
1123     visit(string_input_get_visitor(d->siv), native_out, errp);
1124 }
1125
1126 static void string_cleanup(void *datap)
1127 {
1128     StringSerializeData *d = datap;
1129
1130     string_output_visitor_cleanup(d->sov);
1131     string_input_visitor_cleanup(d->siv);
1132     g_free(d->string);
1133     g_free(d);
1134 }
1135
1136 /* visitor registration, test harness */
1137
1138 /* note: to function interchangeably as a serialization mechanism your
1139  * visitor test implementation should pass the test cases for all visitor
1140  * capabilities: primitives, structures, and lists
1141  */
1142 static const SerializeOps visitors[] = {
1143     {
1144         .type = "QMP",
1145         .serialize = qmp_serialize,
1146         .deserialize = qmp_deserialize,
1147         .cleanup = qmp_cleanup,
1148         .caps = VCAP_PRIMITIVES | VCAP_STRUCTURES | VCAP_LISTS |
1149                 VCAP_PRIMITIVE_LISTS
1150     },
1151     {
1152         .type = "String",
1153         .serialize = string_serialize,
1154         .deserialize = string_deserialize,
1155         .cleanup = string_cleanup,
1156         .caps = VCAP_PRIMITIVES
1157     },
1158     { NULL }
1159 };
1160
1161 static void add_visitor_type(const SerializeOps *ops)
1162 {
1163     char testname_prefix[128];
1164     char testname[128];
1165     TestArgs *args;
1166     int i = 0;
1167
1168     sprintf(testname_prefix, "/visitor/serialization/%s", ops->type);
1169
1170     if (ops->caps & VCAP_PRIMITIVES) {
1171         while (pt_values[i].type != PTYPE_EOL) {
1172             sprintf(testname, "%s/primitives/%s", testname_prefix,
1173                     pt_values[i].description);
1174             args = g_malloc0(sizeof(*args));
1175             args->ops = ops;
1176             args->test_data = &pt_values[i];
1177             g_test_add_data_func(testname, args, test_primitives);
1178             i++;
1179         }
1180     }
1181
1182     if (ops->caps & VCAP_STRUCTURES) {
1183         sprintf(testname, "%s/struct", testname_prefix);
1184         args = g_malloc0(sizeof(*args));
1185         args->ops = ops;
1186         args->test_data = NULL;
1187         g_test_add_data_func(testname, args, test_struct);
1188
1189         sprintf(testname, "%s/nested_struct", testname_prefix);
1190         args = g_malloc0(sizeof(*args));
1191         args->ops = ops;
1192         args->test_data = NULL;
1193         g_test_add_data_func(testname, args, test_nested_struct);
1194     }
1195
1196     if (ops->caps & VCAP_LISTS) {
1197         sprintf(testname, "%s/nested_struct_list", testname_prefix);
1198         args = g_malloc0(sizeof(*args));
1199         args->ops = ops;
1200         args->test_data = NULL;
1201         g_test_add_data_func(testname, args, test_nested_struct_list);
1202     }
1203
1204     if (ops->caps & VCAP_PRIMITIVE_LISTS) {
1205         i = 0;
1206         while (pt_values[i].type != PTYPE_EOL) {
1207             sprintf(testname, "%s/primitive_list/%s", testname_prefix,
1208                     pt_values[i].description);
1209             args = g_malloc0(sizeof(*args));
1210             args->ops = ops;
1211             args->test_data = &pt_values[i];
1212             g_test_add_data_func(testname, args, test_primitive_lists);
1213             i++;
1214         }
1215     }
1216 }
1217
1218 int main(int argc, char **argv)
1219 {
1220     int i = 0;
1221
1222     g_test_init(&argc, &argv, NULL);
1223
1224     while (visitors[i].type != NULL) {
1225         add_visitor_type(&visitors[i]);
1226         i++;
1227     }
1228
1229     g_test_run();
1230
1231     return 0;
1232 }