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Added tests to cover invalid surface blits 

Reproduction case for https://github.com/libsdl-org/SDL/issues/12844
This commit is contained in:
Sam Lantinga 2025-04-22 13:05:38 -07:00
parent fe849f1572
commit 89d7d406ab
1 changed files with 35 additions and 0 deletions
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35
test/testautomation_surface.c
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@ -959,6 +959,36 @@ static int SDLCALL surface_testBlitBlendMul(void *arg)
return TEST_COMPLETED;
}
/**
* Tests blitting invalid surfaces.
*/
static int SDLCALL surface_testBlitInvalid(void *arg)
{
SDL_Surface *valid, *invalid;
bool result;
valid = SDL_CreateSurface(1, 1, SDL_PIXELFORMAT_RGBA8888);
SDLTest_AssertCheck(valid != NULL, "Check surface creation");
invalid = SDL_CreateSurface(0, 0, SDL_PIXELFORMAT_RGBA8888);
SDLTest_AssertCheck(invalid != NULL, "Check surface creation");
SDLTest_AssertCheck(invalid->pixels == NULL, "Check surface pixels are NULL");
result = SDL_BlitSurface(invalid, NULL, valid, NULL);
SDLTest_AssertCheck(result == true, "SDL_BlitSurface(invalid, NULL, valid, NULL), result = %s\n", result ? "true" : "false");
result = SDL_BlitSurface(valid, NULL, invalid, NULL);
SDLTest_AssertCheck(result == true, "SDL_BlitSurface(valid, NULL, invalid, NULL), result = %s\n", result ? "true" : "false");
result = SDL_BlitSurfaceScaled(invalid, NULL, valid, NULL, SDL_SCALEMODE_NEAREST);
SDLTest_AssertCheck(result == false, "SDL_BlitSurfaceScaled(invalid, NULL, valid, NULL, SDL_SCALEMODE_NEAREST), result = %s\n", result ? "true" : "false");
result = SDL_BlitSurfaceScaled(valid, NULL, invalid, NULL, SDL_SCALEMODE_NEAREST);
SDLTest_AssertCheck(result == false, "SDL_BlitSurfaceScaled(valid, NULL, invalid, NULL, SDL_SCALEMODE_NEAREST), result = %s\n", result ? "true" : "false");
SDL_DestroySurface(valid);
SDL_DestroySurface(invalid);
return TEST_COMPLETED;
}
static int SDLCALL surface_testOverflow(void *arg)
{
char buf[1024];
@ -1632,6 +1662,10 @@ static const SDLTest_TestCaseReference surfaceTestBlitBlendMul = {
surface_testBlitBlendMul, "surface_testBlitBlendMul", "Tests blitting routines with mul blending mode.", TEST_ENABLED
};
static const SDLTest_TestCaseReference surfaceTestBlitInvalid = {
surface_testBlitInvalid, "surface_testBlitInvalid", "Tests blitting routines with invalid surfaces.", TEST_ENABLED
};
static const SDLTest_TestCaseReference surfaceTestOverflow = {
surface_testOverflow, "surface_testOverflow", "Test overflow detection.", TEST_ENABLED
};
@ -1680,6 +1714,7 @@ static const SDLTest_TestCaseReference *surfaceTests[] = {
&surfaceTestBlitBlendAddPremultiplied,
&surfaceTestBlitBlendMod,
&surfaceTestBlitBlendMul,
&surfaceTestBlitInvalid,
&surfaceTestOverflow,
&surfaceTestFlip,
&surfaceTestPalette,