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/**
* GUID test suite
*/
#include "SDL.h"
#include "SDL_test.h"
/* ================= Test Case Implementation ================== */
/* Helper functions */
#define NUM_TEST_GUIDS 5
static struct {
char *str;
Uint64 upper, lower;
} test_guids[NUM_TEST_GUIDS] = {
{ "0000000000000000" "ffffffffffffffff",
0x0000000000000000, 0xfffffffffffffffflu },
{ "0011223344556677" "8091a2b3c4d5e6f0",
0x0011223344556677lu, 0x8091a2b3c4d5e6f0lu },
{ "a011223344556677" "8091a2b3c4d5e6f0",
0xa011223344556677lu, 0x8091a2b3c4d5e6f0lu },
{ "a011223344556677" "8091a2b3c4d5e6f1",
0xa011223344556677lu, 0x8091a2b3c4d5e6f1lu },
{ "a011223344556677" "8191a2b3c4d5e6f0",
0xa011223344556677lu, 0x8191a2b3c4d5e6f0lu },
};
static void
upper_lower_to_bytestring(Uint8* out, Uint64 upper, Uint64 lower)
{
Uint64 values[2];
int i, k;
values[0] = upper;
values [1] = lower;
for (i = 0; i < 2; ++i) {
Uint64 v = values[i];
for (k = 0; k < 8; ++k) {
*out++ = v >> 56;
v <<= 8;
}
}
}
/* Test case functions */
/**
* @brief Check String-to-GUID conversion
*
* @sa SDL_GUIDFromString
*/
static int
TestGuidFromString(void *arg)
{
int i;
SDLTest_AssertPass("Call to SDL_GUIDFromString");
for (i = 0; i < NUM_TEST_GUIDS; ++i) {
Uint8 expected[16];
SDL_GUID guid;
upper_lower_to_bytestring(expected,
test_guids[i].upper, test_guids[i].lower);
guid = SDL_GUIDFromString(test_guids[i].str);
SDLTest_AssertCheck(SDL_memcmp(expected, guid.data, 16) == 0, "GUID from string, GUID was: '%s'", test_guids[i].str);
}
return TEST_COMPLETED;
}
/**
* @brief Check GUID-to-String conversion
*
* @sa SDL_GUIDToString
*/
static int
TestGuidToString(void *arg)
{
int i;
SDLTest_AssertPass("Call to SDL_GUIDToString");
for (i = 0; i < NUM_TEST_GUIDS; ++i) {
const int guid_str_offset = 4;
char guid_str_buf[64];
char *guid_str = guid_str_buf + guid_str_offset;
SDL_GUID guid;
int size;
upper_lower_to_bytestring(guid.data,
test_guids[i].upper, test_guids[i].lower);
/* Serialise to limited-length buffers */
for (size = 0; size <= 36; ++size) {
const Uint8 fill_char = size + 0xa0;
Uint32 expected_prefix;
Uint32 actual_prefix;
int written_size;
SDL_memset(guid_str_buf, fill_char, sizeof(guid_str_buf));
SDL_GUIDToString(guid, guid_str, size);
/* Check bytes before guid_str_buf */
expected_prefix = fill_char | (fill_char << 8) | (fill_char << 16) | (fill_char << 24);
SDL_memcpy(&actual_prefix, guid_str_buf, 4);
SDLTest_AssertCheck(expected_prefix == actual_prefix, "String buffer memory before output untouched, expected: %" SDL_PRIu32 ", got: %" SDL_PRIu32 ", at size=%d", expected_prefix, actual_prefix, size);
/* Check that we did not overwrite too much */
written_size = 0;
while ((guid_str[written_size] & 0xff) != fill_char && written_size < 256) {
++written_size;
}
SDLTest_AssertCheck(written_size <= size, "Output length is within expected bounds, with length %d: wrote %d of %d permitted bytes", size, written_size, size);
if (size >= 33) {
SDLTest_AssertCheck(SDL_strcmp(guid_str, test_guids[i].str) == 0, "GUID string equality, from string: %s", test_guids[i].str);
}
}
}
return TEST_COMPLETED;
}
/* ================= Test References ================== */
/* GUID routine test cases */
static const SDLTest_TestCaseReference guidTest1 =
{ (SDLTest_TestCaseFp)TestGuidFromString, "TestGuidFromString", "Call to SDL_GUIDFromString", TEST_ENABLED };
static const SDLTest_TestCaseReference guidTest2 =
{ (SDLTest_TestCaseFp)TestGuidToString, "TestGuidToString", "Call to SDL_GUIDToString", TEST_ENABLED };
/* Sequence of GUID routine test cases */
static const SDLTest_TestCaseReference *guidTests[] = {
&guidTest1,
&guidTest2,
NULL
};
/* GUID routine test suite (global) */
SDLTest_TestSuiteReference guidTestSuite = {
"GUID",
NULL,
guidTests,
NULL
};