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tests: add context param to pm_backlight tests

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We'll be adding more context for the subtests than just the max
brightness.

Signed-off-by: Jani Nikula <jani.nikula@intel.com>
This commit is contained in:
Jani Nikula 2015-11-18 12:28:06 +02:00
parent 77a76ba09a
commit 7afd94ed62
1 changed files with 22 additions and 17 deletions
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39
tests/pm_backlight.c
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@ -35,6 +35,10 @@
#include <unistd.h>
#include <time.h>
struct context {
int max;
};
#define TOLERANCE 5 /* percent */
#define BACKLIGHT_PATH "/sys/class/backlight/intel_backlight"
@ -107,41 +111,41 @@ static void test_and_verify(int val)
igt_assert_lte(val - tolerance, result);
}
static void test_brightness(int max)
static void test_brightness(struct context *context)
{
test_and_verify(0);
test_and_verify(max);
test_and_verify(max / 2);
test_and_verify(context->max);
test_and_verify(context->max / 2);
}
static void test_bad_brightness(int max)
static void test_bad_brightness(struct context *context)
{
int val;
/* First write some sane value */
backlight_write(max / 2, "brightness");
backlight_write(context->max / 2, "brightness");
/* Writing invalid values should fail and not change the value */
igt_assert_lt(backlight_write(-1, "brightness"), 0);
backlight_read(&val, "brightness");
igt_assert_eq(val, max / 2);
igt_assert_lt(backlight_write(max + 1, "brightness"), 0);
igt_assert_eq(val, context->max / 2);
igt_assert_lt(backlight_write(context->max + 1, "brightness"), 0);
backlight_read(&val, "brightness");
igt_assert_eq(val, max / 2);
igt_assert_eq(val, context->max / 2);
igt_assert_lt(backlight_write(INT_MAX, "brightness"), 0);
backlight_read(&val, "brightness");
igt_assert_eq(val, max / 2);
igt_assert_eq(val, context->max / 2);
}
static void test_fade(int max)
static void test_fade(struct context *context)
{
int i;
static const struct timespec ts = { .tv_sec = 0, .tv_nsec = FADESPEED*1000000 };
/* Fade out, then in */
for (i = max; i > 0; i -= max / FADESTEPS) {
for (i = context->max; i > 0; i -= context->max / FADESTEPS) {
test_and_verify(i);
nanosleep(&ts, NULL);
}
for (i = 0; i <= max; i += max / FADESTEPS) {
for (i = 0; i <= context->max; i += context->max / FADESTEPS) {
test_and_verify(i);
nanosleep(&ts, NULL);
}
@ -149,22 +153,23 @@ static void test_fade(int max)
igt_main
{
int max, old;
struct context context = {0};
int old;
igt_skip_on_simulation();
igt_fixture {
/* Get the max value and skip the whole test if sysfs interface not available */
igt_skip_on(backlight_read(&old, "brightness"));
igt_assert(backlight_read(&max, "max_brightness") > -1);
igt_assert(backlight_read(&context.max, "max_brightness") > -1);
}
igt_subtest("basic-brightness")
test_brightness(max);
test_brightness(&context);
igt_subtest("bad-brightness")
test_bad_brightness(max);
test_bad_brightness(&context);
igt_subtest("fade")
test_fade(max);
test_fade(&context);
igt_fixture {
/* Restore old brightness */