Commit 48a406db4d91e212899f0d8a1f580d9fcf59bd9a
2022-05-06T14:32:50
Test: Add Fabs tests to math suite.
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diff --git a/test/testautomation_math.c b/test/testautomation_math.c
index 93d24c2..8baf118 100644
--- a/test/testautomation_math.c
+++ b/test/testautomation_math.c
@@ -517,6 +517,74 @@ round_rangeTest(void *args)
return TEST_COMPLETED;
}
+/* SDL_fabs tests functions */
+
+/**
+ * \brief Checks edge cases (0 and infinity).
+ */
+static int
+fabs_edgeCases(void *args)
+{
+ double result;
+
+ result = SDL_fabs(INFINITY);
+ SDLTest_AssertCheck(INFINITY == result, "Fabs(%f), expected %f, got %f",
+ INFINITY, INFINITY, result);
+ result = SDL_fabs(-INFINITY);
+ SDLTest_AssertCheck(INFINITY == result, "Fabs(%f), expected %f, got %f",
+ -INFINITY, INFINITY, result);
+
+ result = SDL_fabs(0.0);
+ SDLTest_AssertCheck(0.0 == result, "Fabs(%.1f), expected %.1f, got %.1f",
+ 0.0, 0.0, result);
+ result = SDL_fabs(-0.0);
+ SDLTest_AssertCheck(0.0 == result, "Fabs(%.1f), expected %.1f, got %.1f",
+ -0.0, 0.0, result);
+
+ return TEST_COMPLETED;
+}
+
+/**
+ * \brief Checks the NaN case.
+ */
+static int
+fabs_nanCase(void *args)
+{
+ SDLTest_AssertCheck(isnan(SDL_fabs(NAN)), "Fabs(nan), expected nan");
+ return TEST_COMPLETED;
+}
+
+/**
+ * \brief Checks a range of values between 0 and UINT32_MAX
+ */
+static int
+fabs_rangeTest(void *args)
+{
+ const Uint32 ITERATIONS = 10000000;
+ const Uint32 STEP = SDL_MAX_UINT32 / ITERATIONS;
+ Uint32 i;
+ double test_value = 0.0;
+
+ SDLTest_AssertPass("Fabs: Testing a range of %u values with %u steps",
+ ITERATIONS, STEP);
+
+ for (i = 0; i < ITERATIONS; i++, test_value += STEP) {
+ double result;
+ /* These are tested elsewhere */
+ if (isnan(test_value) || isinf(test_value)) {
+ continue;
+ }
+
+ result = SDL_fabs(test_value);
+ if (result != test_value) { /* Only log failures to save performances */
+ SDLTest_AssertPass("Fabs(%.1f), expected %.1f, got %.1f", test_value,
+ test_value, result);
+ return TEST_ABORTED;
+ }
+ }
+ return TEST_COMPLETED;
+}
+
/* ================= Test References ================== */
/* SDL_floor test cases */
@@ -611,11 +679,27 @@ static const SDLTest_TestCaseReference roundTest5 = {
"Check a range of positive integer", TEST_ENABLED
};
+/* SDL_fabs test cases */
+
+static const SDLTest_TestCaseReference fabsTest1 = {
+ (SDLTest_TestCaseFp) fabs_edgeCases, "fabs_edgeCases",
+ "Check positive and negative infinity and 0", TEST_ENABLED
+};
+static const SDLTest_TestCaseReference fabsTest2 = {
+ (SDLTest_TestCaseFp) fabs_nanCase, "fabs_nanCase",
+ "Check the NaN special case", TEST_ENABLED
+};
+static const SDLTest_TestCaseReference fabsTest3 = {
+ (SDLTest_TestCaseFp) fabs_rangeTest, "fabs_rangeTest",
+ "Check a range of positive integer", TEST_ENABLED
+};
+
static const SDLTest_TestCaseReference *mathTests[] = {
&floorTest1, &floorTest2, &floorTest3, &floorTest4, &floorTest5,
&ceilTest1, &ceilTest2, &ceilTest3, &ceilTest4, &ceilTest5,
&truncTest1, &truncTest2, &truncTest3, &truncTest4, &truncTest5,
&roundTest1, &roundTest2, &roundTest3, &roundTest4, &roundTest5,
+ &fabsTest1, &fabsTest2, &fabsTest3,
NULL
};