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Added a test case for snprintf of 0.0 

This verifies regressions in https://github.com/libsdl-org/SDL/issues/4795
This commit is contained in:
Sam Lantinga 2021-11-07 09:39:57 -08:00
parent 3acb172531
commit cdb4d8f22f
1 changed files with 8 additions and 0 deletions
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8
test/testautomation_stdlib.c
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@ -64,6 +64,14 @@ stdlib_snprintf(void *arg)
SDLTest_AssertPass("Call to SDL_snprintf(NULL, 0, \"%%s\", \"foo\")"); SDLTest_AssertPass("Call to SDL_snprintf(NULL, 0, \"%%s\", \"foo\")");
SDLTest_AssertCheck(result == 3, "Check result value, expected: 3, got: %d", result); SDLTest_AssertCheck(result == 3, "Check result value, expected: 3, got: %d", result);
result = SDL_snprintf(text, sizeof(text), "%f", 0.0);
predicted = SDL_snprintf(NULL, 0, "%f", 0.0);
expected = "0.000000";
SDLTest_AssertPass("Call to SDL_snprintf(\"%%f\", 0.0)");
SDLTest_AssertCheck(SDL_strcmp(text, expected) == 0, "Check text, expected: %s, got: %s", expected, text);
SDLTest_AssertCheck(result == SDL_strlen(text), "Check result value, expected: %d, got: %d", (int) SDL_strlen(text), result);
SDLTest_AssertCheck(predicted == result, "Check predicted value, expected: %d, got: %d", result, predicted);
result = SDL_snprintf(text, sizeof(text), "%f", 1.0); result = SDL_snprintf(text, sizeof(text), "%f", 1.0);
predicted = SDL_snprintf(NULL, 0, "%f", 1.0); predicted = SDL_snprintf(NULL, 0, "%f", 1.0);
expected = "1.000000"; expected = "1.000000";