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combase/tests: Add tests for the hstring_private struct. 

The goal of these tests is to show, that the memory layout
of hstring_private is different on Windows, than currently
used in Wine. This creates issues with the WinRT SDK, which
allocates HSTRINGs without using the functions provided by
the combase dll.

Signed-off-by: Bernhard Kölbl <besentv@gmail.com>
Signed-off-by: Huw Davies <huw@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Bernhard Kölbl 2022-01-24 16:09:19 +01:00 committed by Alexandre Julliard
parent 41cfc86d8d
commit d372fdfd7d
1 changed files with 76 additions and 0 deletions
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76
dlls/combase/tests/string.c
View File

@ -479,6 +479,81 @@ static void test_trim(void)
ok(WindowsDeleteString(str1) == S_OK, "Failed to delete string\n");
}
static void test_hstring_struct(void)
{
struct hstring_header
{
UINT32 flags;
UINT32 length;
UINT32 padding1;
UINT32 padding2;
const WCHAR *str;
};
struct hstring_private
{
struct hstring_header header;
LONG refcount;
WCHAR buffer[1];
};
HSTRING str;
HSTRING str2;
HSTRING_HEADER hdr;
struct hstring_private* prv;
struct hstring_private* prv2;
BOOL arch64 = (sizeof(void*) == 8);
ok(arch64 ? (sizeof(prv->header) == 24) : (sizeof(prv->header) == 20), "hstring_header size incorrect.\n");
ok(WindowsCreateString(input_string, 6, &str) == S_OK, "Failed to create string.\n");
prv = CONTAINING_RECORD(str, struct hstring_private, header);
todo_wine
ok(prv->header.flags == 0, "Expected 0 in flags field, got %#x.\n", prv->header.flags);
todo_wine
ok(prv->header.str == prv->buffer, "Expected str to point at buffer, instead pointing at %p.\n", prv->header.str);
todo_wine
ok(prv->refcount == 1, "Expected 1 in refcount, got %u.\n", prv->refcount);
todo_wine
ok(wcscmp(input_string, prv->buffer) == 0, "Expected strings to match.\n");
todo_wine
ok(prv->buffer[prv->header.length] == '\0', "Expected buffer to be null terminated.\n");
ok(WindowsDuplicateString(str, &str2) == S_OK, "Failed to duplicate string.\n");
prv2 = CONTAINING_RECORD(str2, struct hstring_private, header);
todo_wine
ok(prv->refcount == 2, "Expected 2 in refcount, got %u.\n", prv->refcount);
todo_wine
ok(prv2->refcount == 2, "Expected 2 in refcount, got %u.\n", prv2->refcount);
todo_wine
ok(wcscmp(input_string, prv2->buffer) == 0, "Expected strings to match.\n");
ok(WindowsDeleteString(str) == S_OK, "Failed to delete string.\n");
todo_wine
ok(prv->refcount == 1, "Expected 1 in refcount, got %u.\n", prv->refcount);
ok(WindowsDeleteString(str) == S_OK, "Failed to delete string.\n");
ok(WindowsCreateStringReference(input_string, 6, &hdr, &str) == S_OK, "Failed to create string ref.\n");
prv = CONTAINING_RECORD(&hdr, struct hstring_private, header);
prv2 = CONTAINING_RECORD(str, struct hstring_private, header);
ok(prv == prv2, "Pointers not identical.\n");
todo_wine
ok(prv2->header.flags == 1, "Expected HSTRING_REFERENCE_FLAG to be set, got %#x.\n", prv2->header.flags);
todo_wine
ok(prv2->header.str == input_string, "Expected str to point at input_string, instead pointing at %p.\n", prv2->header.str);
ok(WindowsDeleteString(str) == S_OK, "Failed to delete string ref.\n");
}
START_TEST(string)
{
test_create_delete();
@ -489,4 +564,5 @@ START_TEST(string)
test_concat();
test_compare();
test_trim();
test_hstring_struct();
}