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stdlib: Add failing tests for SDL_wcstol

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These help illustrate some key differences between a specs-compliant
libc wcstol and SDL's own implementation.
This commit is contained in:
Carl Åstholm 2024-09-10 21:48:00 +02:00 • committed by Sam Lantinga
parent ee377793fe
commit 5d30980df4
1 changed files with 129 additions and 5 deletions
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134
test/testautomation_stdlib.c
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@ -10,7 +10,6 @@
/** /**
* Call to SDL_strnlen * Call to SDL_strnlen
*/ */
#undef SDL_strnlen
static int SDLCALL stdlib_strnlen(void *arg) static int SDLCALL stdlib_strnlen(void *arg)
{ {
size_t result; size_t result;
@ -38,7 +37,6 @@ static int SDLCALL stdlib_strnlen(void *arg)
/** /**
* Call to SDL_strlcpy * Call to SDL_strlcpy
*/ */
#undef SDL_strlcpy
static int SDLCALL stdlib_strlcpy(void *arg) static int SDLCALL stdlib_strlcpy(void *arg)
{ {
size_t result; size_t result;
@ -135,7 +133,6 @@ static int SDLCALL stdlib_strstr(void *arg)
/** /**
* Call to SDL_snprintf * Call to SDL_snprintf
*/ */
#undef SDL_snprintf
static int SDLCALL stdlib_snprintf(void *arg) static int SDLCALL stdlib_snprintf(void *arg)
{ {
int result; int result;
@ -381,7 +378,6 @@ static int SDLCALL stdlib_snprintf(void *arg)
/** /**
* Call to SDL_swprintf * Call to SDL_swprintf
*/ */
#undef SDL_swprintf
static int SDLCALL stdlib_swprintf(void *arg) static int SDLCALL stdlib_swprintf(void *arg)
{ {
int result; int result;
@ -720,7 +716,6 @@ static int SDLCALL stdlib_getsetenv(void *arg)
/** /**
* Call to SDL_sscanf * Call to SDL_sscanf
*/ */
#undef SDL_sscanf
static int SDLCALL stdlib_sscanf(void *arg) static int SDLCALL stdlib_sscanf(void *arg)
{ {
int output; int output;
@ -1228,6 +1223,130 @@ stdlib_strpbrk(void *arg)
} }
return TEST_COMPLETED; return TEST_COMPLETED;
} }
static int SDLCALL stdlib_wcstol(void *arg)
{
const wchar_t *text;
long result;
wchar_t *endp;
long expected_result;
wchar_t *expected_endp;
// infer decimal
text = L"\t 123abcxyz"; // skip leading space
expected_result = 123;
expected_endp = (wchar_t *)text + 6;
result = SDL_wcstol(text, &endp, 0);
SDLTest_AssertPass("Call to SDL_wcstol(L\"\\t 123abcxyz\", &endp, 0)");
SDLTest_AssertCheck(result == expected_result, "Check result value, expected: %ld, got: %ld", expected_result, result);
SDLTest_AssertCheck(endp == expected_endp, "Check endp value, expected: %p, got: %p", expected_endp, endp);
text = L"+123abcxyz";
expected_result = 123;
expected_endp = (wchar_t *)text + 4;
result = SDL_wcstol(text, &endp, 0);
SDLTest_AssertPass("Call to SDL_wcstol(L\"+123abcxyz\", &endp, 0)");
SDLTest_AssertCheck(result == expected_result, "Check result value, expected: %ld, got: %ld", expected_result, result);
SDLTest_AssertCheck(endp == expected_endp, "Check endp value, expected: %p, got: %p", expected_endp, endp);
text = L"-123abcxyz";
expected_result = -123;
expected_endp = (wchar_t *)text + 4;
result = SDL_wcstol(text, &endp, 0);
SDLTest_AssertPass("Call to SDL_wcstol(L\"-123abcxyz\", &endp, 0)");
SDLTest_AssertCheck(result == expected_result, "Check result value, expected: %ld, got: %ld", expected_result, result);
SDLTest_AssertCheck(endp == expected_endp, "Check endp value, expected: %p, got: %p", expected_endp, endp);
text = L"99999999999999999999abcxyz";
expected_result = (~0UL) >> 1; // LONG_MAX
expected_endp = (wchar_t *)text + 20;
result = SDL_wcstol(text, &endp, 0);
SDLTest_AssertPass("Call to SDL_wcstol(L\"99999999999999999999abcxyz\", &endp, 0)");
SDLTest_AssertCheck(result == expected_result, "Check result value, expected: %ld, got: %ld", expected_result, result);
SDLTest_AssertCheck(endp == expected_endp, "Check endp value, expected: %p, got: %p", expected_endp, endp);
text = L"-99999999999999999999abcxyz";
expected_result = ((~0UL) >> 1) + 1UL; // LONG_MIN
expected_endp = (wchar_t *)text + 21;
result = SDL_wcstol(text, &endp, 0);
SDLTest_AssertPass("Call to SDL_wcstol(L\"-99999999999999999999abcxyz\", &endp, 0)");
SDLTest_AssertCheck(result == expected_result, "Check result value, expected: %ld, got: %ld", expected_result, result);
SDLTest_AssertCheck(endp == expected_endp, "Check endp value, expected: %p, got: %p", expected_endp, endp);
// infer hexadecimal
text = L"0x123abcxyz";
expected_result = 0x123abc;
expected_endp = (wchar_t *)text + 8;
result = SDL_wcstol(text, &endp, 0);
SDLTest_AssertPass("Call to SDL_wcstol(L\"0x123abcxyz\", &endp, 0)");
SDLTest_AssertCheck(result == expected_result, "Check result value, expected: %ld, got: %ld", expected_result, result);
SDLTest_AssertCheck(endp == expected_endp, "Check endp value, expected: %p, got: %p", expected_endp, endp);
text = L"0X123ABCXYZ"; // uppercase X
expected_result = 0x123abc;
expected_endp = (wchar_t *)text + 8;
result = SDL_wcstol(text, &endp, 0);
SDLTest_AssertPass("Call to SDL_wcstol(L\"0X123ABCXYZ\", &endp, 0)");
SDLTest_AssertCheck(result == expected_result, "Check result value, expected: %ld, got: %ld", expected_result, result);
SDLTest_AssertCheck(endp == expected_endp, "Check endp value, expected: %p, got: %p", expected_endp, endp);
// infer octal
text = L"0123abcxyz";
expected_result = 0123;
expected_endp = (wchar_t *)text + 4;
result = SDL_wcstol(text, &endp, 0);
SDLTest_AssertPass("Call to SDL_wcstol(L\"0123abcxyz\", &endp, 0)");
SDLTest_AssertCheck(result == expected_result, "Check result value, expected: %ld, got: %ld", expected_result, result);
SDLTest_AssertCheck(endp == expected_endp, "Check endp value, expected: %p, got: %p", expected_endp, endp);
// arbitrary bases
text = L"00110011";
expected_result = 51;
expected_endp = (wchar_t *)text + 8;
result = SDL_wcstol(text, &endp, 2);
SDLTest_AssertPass("Call to SDL_wcstol(L\"00110011\", &endp, 2)");
SDLTest_AssertCheck(result == expected_result, "Check result value, expected: %ld, got: %ld", expected_result, result);
SDLTest_AssertCheck(endp == expected_endp, "Check endp value, expected: %p, got: %p", expected_endp, endp);
text = L"-uvwxyz";
expected_result = -991;
expected_endp = (wchar_t *)text + 3;
result = SDL_wcstol(text, &endp, 32);
SDLTest_AssertPass("Call to SDL_wcstol(L\"-uvwxyz\", &endp, 32)");
SDLTest_AssertCheck(result == expected_result, "Check result value, expected: %ld, got: %ld", expected_result, result);
SDLTest_AssertCheck(endp == expected_endp, "Check endp value, expected: %p, got: %p", expected_endp, endp);
text = L"ZzZzZzZzZzZzZ";
expected_result = (~0UL) >> 1; // LONG_MAX;
expected_endp = (wchar_t *)text + 13;
result = SDL_wcstol(text, &endp, 36);
SDLTest_AssertPass("Call to SDL_wcstol(L\"ZzZzZzZzZzZzZ\", &endp, 36)");
SDLTest_AssertCheck(result == expected_result, "Check result value, expected: %ld, got: %ld", expected_result, result);
SDLTest_AssertCheck(endp == expected_endp, "Check endp value, expected: %p, got: %p", expected_endp, endp);
text = L"-0";
expected_result = 0;
expected_endp = (wchar_t *)text + 2;
result = SDL_wcstol(text, &endp, 10);
SDLTest_AssertPass("Call to SDL_wcstol(L\"-0\", &endp, 10)");
SDLTest_AssertCheck(result == expected_result, "Check result value, expected: %ld, got: %ld", expected_result, result);
SDLTest_AssertCheck(endp == expected_endp, "Check endp value, expected: %p, got: %p", expected_endp, endp);
text = L" +0x"; // invalid hexadecimal
expected_result = 0;
expected_endp = (wchar_t *)text;
result = SDL_wcstol(text, &endp, 0);
SDLTest_AssertPass("Call to SDL_wcstol(L\" +0x\", &endp, 0)");
SDLTest_AssertCheck(result == expected_result, "Check result value, expected: %ld, got: %ld", expected_result, result);
SDLTest_AssertCheck(endp == expected_endp, "Check endp value, expected: %p, got: %p", expected_endp, endp);
return TEST_COMPLETED;
}
/* ================= Test References ================== */ /* ================= Test References ================== */
/* Standard C routine test cases */ /* Standard C routine test cases */
@ -1275,6 +1394,10 @@ static const SDLTest_TestCaseReference stdlibTest_strpbrk = {
stdlib_strpbrk, "stdlib_strpbrk", "Calls to SDL_strpbrk", TEST_ENABLED stdlib_strpbrk, "stdlib_strpbrk", "Calls to SDL_strpbrk", TEST_ENABLED
}; };
static const SDLTest_TestCaseReference stdlibTest_wcstol = {
stdlib_wcstol, "stdlib_wcstol", "Calls to SDL_wcstol", TEST_ENABLED
};
/* Sequence of Standard C routine test cases */ /* Sequence of Standard C routine test cases */
static const SDLTest_TestCaseReference *stdlibTests[] = { static const SDLTest_TestCaseReference *stdlibTests[] = {
&stdlibTest_strnlen, &stdlibTest_strnlen,
@ -1288,6 +1411,7 @@ static const SDLTest_TestCaseReference *stdlibTests[] = {
&stdlibTestOverflow, &stdlibTestOverflow,
&stdlibTest_iconv, &stdlibTest_iconv,
&stdlibTest_strpbrk, &stdlibTest_strpbrk,
&stdlibTest_wcstol,
NULL NULL
}; };