dlls/ole32/tests/propvariant.c

   1 /*
   2  * PropVariant Tests
   3  *
   4  * Copyright 2004 Robert Shearman
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20
  21 #include "windows.h"
  22
  23 #include "wine/test.h"
  24
  25 /* invalid in all versions */
  26 #define PROP_INV 0x7f
  27 /* valid in v0 and above (NT4+) */
  28 #define PROP_V0  0
  29 /* valid in v1 and above (Win2k+) */
  30 #define PROP_V1  1
  31 /* valid in v1a and above (WinXP+) */
  32 #define PROP_V1A 2
  33 #define PROP_TODO 0x80
  34
  35 static const struct valid_mapping
  36 {
  37     BYTE simple;
  38     BYTE with_array;
  39     BYTE with_vector;
  40     BYTE byref;
  41 } valid_types[] =
  42 {
  43     { PROP_V0 , PROP_INV, PROP_INV, PROP_INV }, /* VT_EMPTY */
  44     { PROP_V0 , PROP_INV, PROP_INV, PROP_INV }, /* VT_NULL */
  45     { PROP_V0 , PROP_V1 | PROP_TODO , PROP_V0 , PROP_V1 | PROP_TODO  }, /* VT_I2 */
  46     { PROP_V0 , PROP_V1 | PROP_TODO , PROP_V0 , PROP_V1 | PROP_TODO  }, /* VT_I4 */
  47     { PROP_V0 , PROP_V1 | PROP_TODO , PROP_V0 , PROP_V1 | PROP_TODO  }, /* VT_R4 */
  48     { PROP_V0 , PROP_V1 | PROP_TODO , PROP_V0 , PROP_V1 | PROP_TODO  }, /* VT_R8 */
  49     { PROP_V0 , PROP_V1 | PROP_TODO , PROP_V0 , PROP_V1 | PROP_TODO  }, /* VT_CY */
  50     { PROP_V0 , PROP_V1 | PROP_TODO , PROP_V0 , PROP_V1 | PROP_TODO  }, /* VT_DATE */
  51     { PROP_V0 , PROP_V1 | PROP_TODO , PROP_V0 , PROP_V1 | PROP_TODO  }, /* VT_BSTR */
  52     { PROP_V1 | PROP_TODO , PROP_V1 | PROP_TODO , PROP_INV, PROP_V1 | PROP_TODO  }, /* VT_DISPATCH */
  53     { PROP_V0 , PROP_V1 | PROP_TODO , PROP_V0 , PROP_V1 | PROP_TODO  }, /* VT_ERROR */
  54     { PROP_V0 , PROP_V1 | PROP_TODO , PROP_V0 , PROP_V1 | PROP_TODO  }, /* VT_BOOL */
  55     { PROP_V1 | PROP_TODO , PROP_V1 | PROP_TODO , PROP_V0 , PROP_V1 | PROP_TODO  }, /* VT_VARIANT */
  56     { PROP_V1 | PROP_TODO , PROP_V1 | PROP_TODO , PROP_INV, PROP_V1 | PROP_TODO  }, /* VT_UNKNOWN */
  57     { PROP_V1 , PROP_V1 | PROP_TODO , PROP_INV, PROP_V1 | PROP_TODO  }, /* VT_DECIMAL */
  58     { PROP_INV, PROP_INV, PROP_INV, PROP_INV }, /* 15 */
  59     { PROP_V1 , PROP_V1 | PROP_TODO , PROP_V1 , PROP_V1 | PROP_TODO  }, /* VT_I1 */
  60     { PROP_V0 , PROP_V1 | PROP_TODO , PROP_V0 , PROP_V1 | PROP_TODO  }, /* VT_UI1 */
  61     { PROP_V0 , PROP_V1 | PROP_TODO , PROP_V0 , PROP_V1 | PROP_TODO  }, /* VT_UI2 */
  62     { PROP_V0 , PROP_V1 | PROP_TODO , PROP_V0 , PROP_V1 | PROP_TODO  }, /* VT_UI4 */
  63     { PROP_V0 , PROP_V1A | PROP_TODO, PROP_V0 , PROP_V1A | PROP_TODO }, /* VT_I8 */
  64     { PROP_V0 , PROP_V1A | PROP_TODO, PROP_V0 , PROP_V1A | PROP_TODO }, /* VT_UI8 */
  65     { PROP_V1 | PROP_TODO , PROP_V1 | PROP_TODO , PROP_INV, PROP_V1 | PROP_TODO  }, /* VT_INT */
  66     { PROP_V1 | PROP_TODO , PROP_V1 | PROP_TODO , PROP_INV, PROP_V1 | PROP_TODO  }, /* VT_UINT */
  67     { PROP_INV, PROP_INV, PROP_INV, PROP_INV }, /* VT_VOID */
  68     { PROP_INV, PROP_INV, PROP_INV, PROP_INV }, /* VT_HRESULT */
  69     { PROP_INV, PROP_INV, PROP_INV, PROP_INV }, /* VT_PTR */
  70     { PROP_INV, PROP_INV, PROP_INV, PROP_INV }, /* VT_SAFEARRAY */
  71     { PROP_INV, PROP_INV, PROP_INV, PROP_INV }, /* VT_CARRAY */
  72     { PROP_INV, PROP_INV, PROP_INV, PROP_INV }, /* VT_USERDEFINED */
  73     { PROP_V0 , PROP_INV, PROP_V0 , PROP_INV }, /* VT_LPSTR */
  74     { PROP_V0 , PROP_INV, PROP_V0 , PROP_INV }, /* VT_LPWSTR */
  75     { PROP_INV, PROP_INV, PROP_INV, PROP_INV }, /* 32 */
  76     { PROP_INV, PROP_INV, PROP_INV, PROP_INV }, /* 33 */
  77     { PROP_INV, PROP_INV, PROP_INV, PROP_INV }, /* 34 */
  78     { PROP_INV, PROP_INV, PROP_INV, PROP_INV }, /* 35 */
  79     { PROP_V1 | PROP_TODO , PROP_V1 | PROP_TODO , PROP_INV, PROP_V1 | PROP_TODO  }, /* VT_RECORD */
  80     { PROP_INV, PROP_INV, PROP_INV, PROP_INV }, /* VT_INT_PTR */
  81     { PROP_INV, PROP_INV, PROP_INV, PROP_INV }, /* VT_UINT_PTR */
  82     { PROP_INV, PROP_INV, PROP_INV, PROP_INV }, /* 39 */
  83     { PROP_INV, PROP_INV, PROP_INV, PROP_INV }, /* 40 */
  84     { PROP_INV, PROP_INV, PROP_INV, PROP_INV }, /* 41 */
  85     { PROP_INV, PROP_INV, PROP_INV, PROP_INV }, /* 42 */
  86     { PROP_INV, PROP_INV, PROP_INV, PROP_INV }, /* 43 */
  87     { PROP_INV, PROP_INV, PROP_INV, PROP_INV }, /* 44 */
  88     { PROP_INV, PROP_INV, PROP_INV, PROP_INV }, /* 45 */
  89     { PROP_INV, PROP_INV, PROP_INV, PROP_INV }, /* 46 */
  90     { PROP_INV, PROP_INV, PROP_INV, PROP_INV }, /* 47 */
  91     { PROP_INV, PROP_INV, PROP_INV, PROP_INV }, /* 48 */
  92     { PROP_INV, PROP_INV, PROP_INV, PROP_INV }, /* 49 */
  93     { PROP_INV, PROP_INV, PROP_INV, PROP_INV }, /* 50 */
  94     { PROP_INV, PROP_INV, PROP_INV, PROP_INV }, /* 51 */
  95     { PROP_INV, PROP_INV, PROP_INV, PROP_INV }, /* 52 */
  96     { PROP_INV, PROP_INV, PROP_INV, PROP_INV }, /* 53 */
  97     { PROP_INV, PROP_INV, PROP_INV, PROP_INV }, /* 54 */
  98     { PROP_INV, PROP_INV, PROP_INV, PROP_INV }, /* 55 */
  99     { PROP_INV, PROP_INV, PROP_INV, PROP_INV }, /* 56 */
 100     { PROP_INV, PROP_INV, PROP_INV, PROP_INV }, /* 57 */
 101     { PROP_INV, PROP_INV, PROP_INV, PROP_INV }, /* 58 */
 102     { PROP_INV, PROP_INV, PROP_INV, PROP_INV }, /* 59 */
 103     { PROP_INV, PROP_INV, PROP_INV, PROP_INV }, /* 60 */
 104     { PROP_INV, PROP_INV, PROP_INV, PROP_INV }, /* 61 */
 105     { PROP_INV, PROP_INV, PROP_INV, PROP_INV }, /* 62 */
 106     { PROP_INV, PROP_INV, PROP_INV, PROP_INV }, /* 63 */
 107     { PROP_V0 , PROP_INV, PROP_V0 , PROP_INV }, /* VT_FILETIME */
 108     { PROP_V0 , PROP_INV, PROP_INV, PROP_INV }, /* VT_BLOB */
 109     { PROP_V0 , PROP_INV, PROP_INV, PROP_INV }, /* VT_STREAM */
 110     { PROP_V0 , PROP_INV, PROP_INV, PROP_INV }, /* VT_STORAGE */
 111     { PROP_V0 , PROP_INV, PROP_INV, PROP_INV }, /* VT_STREAMED_OBJECT */
 112     { PROP_V0 , PROP_INV, PROP_INV, PROP_INV }, /* VT_STORED_OBJECT */
 113     { PROP_V0 , PROP_INV, PROP_INV, PROP_INV }, /* VT_BLOB_OBJECT */
 114     { PROP_V0 , PROP_INV, PROP_V0 , PROP_INV }  /* VT_CF */
 115 };
 116
 117 static const char* wine_vtypes[VT_CLSID+1] =
 118 {
 119   "VT_EMPTY","VT_NULL","VT_I2","VT_I4","VT_R4","VT_R8","VT_CY","VT_DATE",
 120   "VT_BSTR","VT_DISPATCH","VT_ERROR","VT_BOOL","VT_VARIANT","VT_UNKNOWN",
 121   "VT_DECIMAL","15","VT_I1","VT_UI1","VT_UI2","VT_UI4","VT_I8","VT_UI8",
 122   "VT_INT","VT_UINT","VT_VOID","VT_HRESULT","VT_PTR","VT_SAFEARRAY",
 123   "VT_CARRAY","VT_USERDEFINED","VT_LPSTR","VT_LPWSTR","32","33","34","35",
 124   "VT_RECORD","VT_INT_PTR","VT_UINT_PTR","39","40","41","42","43","44","45",
 125   "46","47","48","49","50","51","52","53","54","55","56","57","58","59","60",
 126   "61","62","63","VT_FILETIME","VT_BLOB","VT_STREAM","VT_STORAGE",
 127   "VT_STREAMED_OBJECT","VT_STORED_OBJECT","VT_BLOB_OBJECT","VT_CF","VT_CLSID"
 128 };
 129
 130
 131 static void expect(HRESULT hr, VARTYPE vt)
 132 {
 133     int idx = vt & VT_TYPEMASK;
 134     BYTE flags;
 135     const char *modifier;
 136
 137     if(vt & VT_BYREF)
 138     {
 139         flags = valid_types[idx].byref;
 140         modifier = "byref";
 141     }
 142     else if(vt & VT_ARRAY)
 143     {
 144         flags = valid_types[idx].with_array;
 145         modifier = "array";
 146     }
 147     else if(vt & VT_VECTOR)
 148     {
 149         flags = valid_types[idx].with_vector;
 150         modifier = "vector";
 151     }
 152     else
 153     {
 154         flags = valid_types[idx].simple;
 155         modifier = "simple";
 156     }
 157
 158     if(flags == PROP_INV)
 159         ok(hr == STG_E_INVALIDPARAMETER, "%s (%s): got %08x\n", wine_vtypes[idx], modifier, hr);
 160     else if(flags == PROP_V0)
 161         ok(hr == S_OK, "%s (%s): got %08x\n", wine_vtypes[idx], modifier, hr);
 162     else if(flags & PROP_TODO)
 163     {
 164         todo_wine
 165         {
 166         if(hr != S_OK)
 167             win_skip("%s (%s): unsupported\n", wine_vtypes[idx], modifier);
 168         else ok(hr == S_OK, "%s (%s): got %08x\n", wine_vtypes[idx], modifier, hr);
 169         }
 170     }
 171     else
 172     {
 173         if(hr != S_OK)
 174             win_skip("%s (%s): unsupported\n", wine_vtypes[idx], modifier);
 175         else ok(hr == S_OK, "%s (%s): got %08x\n", wine_vtypes[idx], modifier, hr);
 176     }
 177 }
 178
 179 static void test_validtypes(void)
 180 {
 181     PROPVARIANT propvar;
 182     HRESULT hr;
 183     unsigned int i;
 184
 185     memset(&propvar, 0, sizeof(propvar));
 186
 187     for (i = 0; i < sizeof(valid_types)/sizeof(valid_types[0]); i++)
 188     {
 189         VARTYPE vt;
 190
 191         vt = propvar.vt = i;
 192         hr = PropVariantClear(&propvar);
 193         expect(hr, vt);
 194
 195         vt = propvar.vt = i | VT_ARRAY;
 196         hr = PropVariantClear(&propvar);
 197         expect(hr, vt);
 198
 199         vt = propvar.vt = i | VT_VECTOR;
 200         hr = PropVariantClear(&propvar);
 201         expect(hr, vt);
 202
 203         vt = propvar.vt = i | VT_BYREF;
 204         hr = PropVariantClear(&propvar);
 205         expect(hr, vt);
 206
 207     }
 208 }
 209
 210 static void test_copy(void)
 211 {
 212     static char szTestString[] = "Test String";
 213     static WCHAR wszTestString[] = {'T','e','s','t',' ','S','t','r','i','n','g',0};
 214     PROPVARIANT propvarSrc;
 215     PROPVARIANT propvarDst;
 216     HRESULT hr;
 217
 218     propvarSrc.vt = VT_BSTR;
 219     U(propvarSrc).bstrVal = SysAllocString(wszTestString);
 220
 221     hr = PropVariantCopy(&propvarDst, &propvarSrc);
 222     ok(hr == S_OK, "PropVariantCopy(...VT_BSTR...) failed\n");
 223     ok(!lstrcmpW(U(propvarSrc).bstrVal, U(propvarDst).bstrVal), "BSTR not copied properly\n");
 224     hr = PropVariantClear(&propvarSrc);
 225     ok(hr == S_OK, "PropVariantClear(...VT_BSTR...) failed\n");
 226     hr = PropVariantClear(&propvarDst);
 227     ok(hr == S_OK, "PropVariantClear(...VT_BSTR...) failed\n");
 228
 229     propvarSrc.vt = VT_LPWSTR;
 230     U(propvarSrc).pwszVal = wszTestString;
 231     hr = PropVariantCopy(&propvarDst, &propvarSrc);
 232     ok(hr == S_OK, "PropVariantCopy(...VT_LPWSTR...) failed\n");
 233     ok(!lstrcmpW(U(propvarSrc).pwszVal, U(propvarDst).pwszVal), "Wide string not copied properly\n");
 234     hr = PropVariantClear(&propvarDst);
 235     ok(hr == S_OK, "PropVariantClear(...VT_LPWSTR...) failed\n");
 236     memset(&propvarSrc, 0, sizeof(propvarSrc));
 237
 238     propvarSrc.vt = VT_LPSTR;
 239     U(propvarSrc).pszVal = szTestString;
 240     hr = PropVariantCopy(&propvarDst, &propvarSrc);
 241     ok(hr == S_OK, "PropVariantCopy(...VT_LPSTR...) failed\n");
 242     ok(!strcmp(U(propvarSrc).pszVal, U(propvarDst).pszVal), "String not copied properly\n");
 243     hr = PropVariantClear(&propvarDst);
 244     ok(hr == S_OK, "PropVariantClear(...VT_LPSTR...) failed\n");
 245     memset(&propvarSrc, 0, sizeof(propvarSrc));
 246 }
 247
 248 struct _PMemoryAllocator_vtable {
 249     void *Allocate; /* virtual void* Allocate(ULONG cbSize); */
 250     void *Free; /* virtual void Free(void *pv); */
 251 };
 252
 253 typedef struct _PMemoryAllocator {
 254     struct _PMemoryAllocator_vtable *vt;
 255 } PMemoryAllocator;
 256
 257 #ifdef __i386__
 258 #define __thiscall __stdcall
 259 #else
 260 #define __thiscall __cdecl
 261 #endif
 262
 263 static void * __thiscall PMemoryAllocator_Allocate(PMemoryAllocator *_this, ULONG cbSize)
 264 {
 265     return CoTaskMemAlloc(cbSize);
 266 }
 267
 268 static void __thiscall PMemoryAllocator_Free(PMemoryAllocator *_this, void *pv)
 269 {
 270     CoTaskMemFree(pv);
 271 }
 272
 273 #ifdef __i386__
 274
 275 #include "pshpack1.h"
 276 typedef struct
 277 {
 278     BYTE pop_eax;  /* popl  %eax  */
 279     BYTE push_ecx; /* pushl %ecx  */
 280     BYTE push_eax; /* pushl %eax  */
 281     BYTE jmp_func; /* jmp   $func */
 282     DWORD func;
 283 } THISCALL_TO_STDCALL_THUNK;
 284 #include "poppack.h"
 285
 286 static THISCALL_TO_STDCALL_THUNK *wrapperCodeMem = NULL;
 287
 288 static void fill_thunk(THISCALL_TO_STDCALL_THUNK *thunk, void *fn)
 289 {
 290     thunk->pop_eax = 0x58;
 291     thunk->push_ecx = 0x51;
 292     thunk->push_eax = 0x50;
 293     thunk->jmp_func = 0xe9;
 294     thunk->func = (char*)fn - (char*)(&thunk->func + 1);
 295 }
 296
 297 static void setup_vtable(struct _PMemoryAllocator_vtable *vtable)
 298 {
 299     wrapperCodeMem = VirtualAlloc(NULL, 2 * sizeof(*wrapperCodeMem),
 300                                   MEM_COMMIT, PAGE_EXECUTE_READWRITE);
 301
 302     fill_thunk(&wrapperCodeMem[0], PMemoryAllocator_Allocate);
 303     fill_thunk(&wrapperCodeMem[1], PMemoryAllocator_Free);
 304
 305     vtable->Allocate = &wrapperCodeMem[0];
 306     vtable->Free = &wrapperCodeMem[1];
 307 }
 308
 309 #else
 310
 311 static void setup_vtable(struct _PMemoryAllocator_vtable *vtable)
 312 {
 313     vtable->Allocate = PMemoryAllocator_Allocate;
 314     vtable->Free = PMemoryAllocator_Free;
 315 }
 316
 317 #endif
 318
 319 static const char serialized_empty[] = {
 320     0,0, /* VT_EMPTY */
 321     0,0, /* padding */
 322 };
 323
 324 static const char serialized_null[] = {
 325     1,0, /* VT_NULL */
 326     0,0, /* padding */
 327 };
 328
 329 static const char serialized_i4[] = {
 330     3,0, /* VT_I4 */
 331     0,0, /* padding */
 332     0xef,0xcd,0xab,0xfe
 333 };
 334
 335 static const char serialized_bstr_wc[] = {
 336     8,0, /* VT_BSTR */
 337     0,0, /* padding */
 338     10,0,0,0, /* size */
 339     't',0,'e',0,
 340     's',0,'t',0,
 341     0,0,0,0
 342 };
 343
 344 static const char serialized_bstr_mb[] = {
 345     8,0, /* VT_BSTR */
 346     0,0, /* padding */
 347     5,0,0,0, /* size */
 348     't','e','s','t',
 349     0,0,0,0
 350 };
 351
 352 static void test_propertytovariant(void)
 353 {
 354     HANDLE hole32;
 355     BOOLEAN (__stdcall *pStgConvertPropertyToVariant)(const SERIALIZEDPROPERTYVALUE*,USHORT,PROPVARIANT*,PMemoryAllocator*);
 356     PROPVARIANT propvar;
 357     PMemoryAllocator allocator;
 358     struct _PMemoryAllocator_vtable vtable;
 359     BOOLEAN ret;
 360     static const WCHAR test_string[] = {'t','e','s','t',0};
 361
 362     hole32 = GetModuleHandleA("ole32");
 363
 364     pStgConvertPropertyToVariant = (void*)GetProcAddress(hole32, "StgConvertPropertyToVariant");
 365
 366     if (!pStgConvertPropertyToVariant)
 367     {
 368         win_skip("StgConvertPropertyToVariant not available\n");
 369         return;
 370     }
 371
 372     setup_vtable(&vtable);
 373     allocator.vt = &vtable;
 374
 375     ret = pStgConvertPropertyToVariant((SERIALIZEDPROPERTYVALUE*)serialized_empty,
 376         CP_WINUNICODE, &propvar, &allocator);
 377
 378     ok(ret == 0, "StgConvertPropertyToVariant returned %i\n", ret);
 379     ok(propvar.vt == VT_EMPTY, "unexpected vt %x\n", propvar.vt);
 380
 381     ret = pStgConvertPropertyToVariant((SERIALIZEDPROPERTYVALUE*)serialized_null,
 382         CP_WINUNICODE, &propvar, &allocator);
 383
 384     ok(ret == 0, "StgConvertPropertyToVariant returned %i\n", ret);
 385     ok(propvar.vt == VT_NULL, "unexpected vt %x\n", propvar.vt);
 386
 387     ret = pStgConvertPropertyToVariant((SERIALIZEDPROPERTYVALUE*)serialized_i4,
 388         CP_WINUNICODE, &propvar, &allocator);
 389
 390     ok(ret == 0, "StgConvertPropertyToVariant returned %i\n", ret);
 391     ok(propvar.vt == VT_I4, "unexpected vt %x\n", propvar.vt);
 392     ok(U(propvar).lVal == 0xfeabcdef, "unexpected lVal %x\n", U(propvar).lVal);
 393
 394     ret = pStgConvertPropertyToVariant((SERIALIZEDPROPERTYVALUE*)serialized_bstr_wc,
 395         CP_WINUNICODE, &propvar, &allocator);
 396
 397     ok(ret == 0, "StgConvertPropertyToVariant returned %i\n", ret);
 398     ok(propvar.vt == VT_BSTR, "unexpected vt %x\n", propvar.vt);
 399     ok(!lstrcmpW(U(propvar).bstrVal, test_string), "unexpected string value\n");
 400     PropVariantClear(&propvar);
 401
 402     ret = pStgConvertPropertyToVariant((SERIALIZEDPROPERTYVALUE*)serialized_bstr_mb,
 403         CP_UTF8, &propvar, &allocator);
 404
 405     ok(ret == 0, "StgConvertPropertyToVariant returned %i\n", ret);
 406     ok(propvar.vt == VT_BSTR, "unexpected vt %x\n", propvar.vt);
 407     ok(!lstrcmpW(U(propvar).bstrVal, test_string), "unexpected string value\n");
 408     PropVariantClear(&propvar);
 409 }
 410
 411 static void test_varianttoproperty(void)
 412 {
 413     HANDLE hole32;
 414     PROPVARIANT propvar;
 415     SERIALIZEDPROPERTYVALUE *propvalue, *own_propvalue;
 416     SERIALIZEDPROPERTYVALUE* (__stdcall *pStgConvertVariantToProperty)(
 417         const PROPVARIANT*,USHORT,SERIALIZEDPROPERTYVALUE*,ULONG*,PROPID,BOOLEAN,ULONG*);
 418     ULONG len;
 419     static const WCHAR test_string[] = {'t','e','s','t',0};
 420     BSTR test_string_bstr;
 421
 422     hole32 = GetModuleHandleA("ole32");
 423
 424     pStgConvertVariantToProperty = (void*)GetProcAddress(hole32, "StgConvertVariantToProperty");
 425
 426     if (!pStgConvertVariantToProperty)
 427     {
 428         win_skip("StgConvertVariantToProperty not available\n");
 429         return;
 430     }
 431
 432     own_propvalue = HeapAlloc(GetProcessHeap(), 0, sizeof(SERIALIZEDPROPERTYVALUE) + 20);
 433
 434     PropVariantInit(&propvar);
 435
 436     propvar.vt = VT_I4;
 437     U(propvar).lVal = 0xfeabcdef;
 438
 439     len = 0xdeadbeef;
 440     propvalue = pStgConvertVariantToProperty(&propvar, CP_WINUNICODE, NULL, &len,
 441         0, FALSE, 0);
 442
 443     ok(propvalue == NULL, "got nonnull propvalue\n");
 444     todo_wine ok(len == 8, "unexpected length %d\n", len);
 445
 446     if (len == 0xdeadbeef)
 447     {
 448         HeapFree(GetProcessHeap(), 0, own_propvalue);
 449         return;
 450     }
 451
 452     len = 20;
 453     propvalue = pStgConvertVariantToProperty(&propvar, CP_WINUNICODE, own_propvalue, &len,
 454         0, FALSE, 0);
 455
 456     ok(propvalue == own_propvalue, "unexpected propvalue %p\n", propvalue);
 457     ok(len == 8, "unexpected length %d\n", len);
 458     ok(!memcmp(propvalue, serialized_i4, 8), "got wrong data\n");
 459
 460     propvar.vt = VT_EMPTY;
 461     len = 20;
 462     own_propvalue->dwType = 0xdeadbeef;
 463     propvalue = pStgConvertVariantToProperty(&propvar, CP_WINUNICODE, own_propvalue, &len,
 464         0, FALSE, 0);
 465
 466     ok(propvalue == own_propvalue, "unexpected propvalue %p\n", propvalue);
 467     ok(len == 4 || broken(len == 0) /* before Vista */, "unexpected length %d\n", len);
 468     if (len) ok(!memcmp(propvalue, serialized_empty, 4), "got wrong data\n");
 469     else ok(propvalue->dwType == 0xdeadbeef, "unexpected type %d\n", propvalue->dwType);
 470
 471     propvar.vt = VT_NULL;
 472     len = 20;
 473     propvalue = pStgConvertVariantToProperty(&propvar, CP_WINUNICODE, own_propvalue, &len,
 474         0, FALSE, 0);
 475
 476     ok(propvalue == own_propvalue, "unexpected propvalue %p\n", propvalue);
 477     ok(len == 4, "unexpected length %d\n", len);
 478     ok(!memcmp(propvalue, serialized_null, 4), "got wrong data\n");
 479
 480     test_string_bstr = SysAllocString(test_string);
 481
 482     propvar.vt = VT_BSTR;
 483     U(propvar).bstrVal = test_string_bstr;
 484     len = 20;
 485     propvalue = pStgConvertVariantToProperty(&propvar, CP_WINUNICODE, own_propvalue, &len,
 486         0, FALSE, 0);
 487
 488     ok(propvalue == own_propvalue, "unexpected propvalue %p\n", propvalue);
 489     ok(len == 20, "unexpected length %d\n", len);
 490     ok(!memcmp(propvalue, serialized_bstr_wc, 20), "got wrong data\n");
 491
 492     len = 20;
 493     propvalue = pStgConvertVariantToProperty(&propvar, CP_UTF8, own_propvalue, &len,
 494         0, FALSE, 0);
 495
 496     ok(propvalue == own_propvalue, "unexpected propvalue %p\n", propvalue);
 497     ok(len == 16, "unexpected length %d\n", len);
 498     ok(!memcmp(propvalue, serialized_bstr_mb, 16), "got wrong data\n");
 499
 500     SysFreeString(test_string_bstr);
 501
 502     HeapFree(GetProcessHeap(), 0, own_propvalue);
 503 }
 504
 505 START_TEST(propvariant)
 506 {
 507     test_validtypes();
 508     test_copy();
 509     test_propertytovariant();
 510     test_varianttoproperty();
 511 }