diff options
| -rw-r--r-- | lib/tests/igt_stats.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/lib/tests/igt_stats.c b/lib/tests/igt_stats.c index 172e4b32..f9081c76 100644 --- a/lib/tests/igt_stats.c +++ b/lib/tests/igt_stats.c @@ -45,6 +45,30 @@ static void test_mean(void) igt_stats_fini(&stats); } +static void test_invalidate_mean(void) +{ + igt_stats_t stats; + double mean1, mean2; + + igt_stats_init(&stats, 6); + + igt_stats_push(&stats, 2); + igt_stats_push(&stats, 4); + igt_stats_push(&stats, 6); + igt_stats_push(&stats, 8); + igt_stats_push(&stats, 10); + + mean1 = igt_stats_get_mean(&stats); + igt_assert(mean1 == (2 + 4 + 6 + 8 + 10) / 5.); + + igt_stats_push(&stats, 100); + + mean2 = igt_stats_get_mean(&stats); + igt_assert(mean1 != mean2); + + igt_stats_fini(&stats); +} + /* * Taken from the "Basic examples" section of: * https://en.wikipedia.org/wiki/Standard_deviation @@ -80,5 +104,6 @@ static void test_std_deviation(void) igt_simple_main { test_mean(); + test_invalidate_mean(); test_std_deviation(); } |