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test: add math test for cubic-bezier function

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Signed-off-by: Neo Xu <neo.xu1990@gmail.com>
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Neo Xu 2023-05-29 23:36:33 +08:00 committed by Gabor Kiss-Vamosi
parent 62ec011585
commit b374282e23
1 changed files with 37 additions and 0 deletions
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37
tests/src/test_cases/test_math.c Normal file
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#if LV_BUILD_TEST
#include "../lvgl.h"
#include "unity/unity.h"
void test_math_cubic_bezier_result_should_be_precise(void)
{
int32_t x, x1, y1, x2, y2, y;
int i = 0;
while(i++ < 10000) {
x1 = lv_rand(0, 1024);
x2 = lv_rand(0, 1024);
y1 = lv_rand(0, 1024);
y2 = lv_rand(0, 1024);
float fx1 = x1 / 1024.f;
float fx2 = x2 / 1024.f;
float fy1 = y1 / 1024.f;
float fy2 = y2 / 1024.f;
float fx, fy;
int j = 0;
while(j++ < 100000) {
x = lv_rand(0, 1024);
y = lv_cubic_bezier(x, x1, y1, x2, y2);
fx = x / 1024.f;
fy = lv_cubic_bezier_f(fx, fx1, fy1, fx2, fy2);
#if 1
if (LV_ABS(fy * 1024 - y) > 250) {
printf("x, x1, y1, x2, y2: %d,%d,%d,%d,%d\n", (int)x, (int)x1, (int)y1, (int)x2, (int)y2);
}
#endif
TEST_ASSERT_LESS_OR_EQUAL(250, LV_ABS(fy * 1024 - y));
}
}
}
#endif