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tests: limit pm_backlight actual brightness tolerance between 0 and max

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Signed-off-by: Jani Nikula <jani.nikula@intel.com>
This commit is contained in:
Jani Nikula 2015-11-18 12:52:40 +02:00
parent 7afd94ed62
commit 18170d211c
1 changed files with 8 additions and 8 deletions
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16
tests/pm_backlight.c
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@ -95,7 +95,7 @@ static int backlight_write(int value, const char *fname)
return 0; return 0;
} }
static void test_and_verify(int val) static void test_and_verify(struct context *context, int val)
{ {
int result; int result;
int tolerance = val * TOLERANCE / 100; int tolerance = val * TOLERANCE / 100;
@ -107,15 +107,15 @@ static void test_and_verify(int val)
igt_assert_eq(backlight_read(&result, "actual_brightness"), 0); igt_assert_eq(backlight_read(&result, "actual_brightness"), 0);
/* Some rounding may happen depending on hw. Just check that it's close enough. */ /* Some rounding may happen depending on hw. Just check that it's close enough. */
igt_assert_lte(result, val + tolerance); igt_assert_lte(result, min(context->max, val + tolerance));
igt_assert_lte(val - tolerance, result); igt_assert_lte(max(0, val - tolerance), result);
} }
static void test_brightness(struct context *context) static void test_brightness(struct context *context)
{ {
test_and_verify(0); test_and_verify(context, 0);
test_and_verify(context->max); test_and_verify(context, context->max);
test_and_verify(context->max / 2); test_and_verify(context, context->max / 2);
} }
static void test_bad_brightness(struct context *context) static void test_bad_brightness(struct context *context)
@ -142,11 +142,11 @@ static void test_fade(struct context *context)
/* Fade out, then in */ /* Fade out, then in */
for (i = context->max; i > 0; i -= context->max / FADESTEPS) { for (i = context->max; i > 0; i -= context->max / FADESTEPS) {
test_and_verify(i); test_and_verify(context, i);
nanosleep(&ts, NULL); nanosleep(&ts, NULL);
} }
for (i = 0; i <= context->max; i += context->max / FADESTEPS) { for (i = 0; i <= context->max; i += context->max / FADESTEPS) {
test_and_verify(i); test_and_verify(context, i);
nanosleep(&ts, NULL); nanosleep(&ts, NULL);
} }
} }