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Better failure message on stochastic test failure

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This commit is contained in:
Nick Mathewson 2019-01-17 16:24:08 -05:00
parent c08fc2e19e
commit 81f1b89efc
1 changed files with 13 additions and 3 deletions
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16
src/test/test_prob_distr.c
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@ -1137,7 +1137,11 @@ teardown_deterministic_rand(void)
static void
dump_seed(void)
{
printf("\nSeed: %s\n",
printf("\n"
"NOTE: This is a stochastic test, and we expect it to fail from\n"
"time to time, with some low probability. If you see it fail more\n"
"than one trial in 100, though, please tell us.\n\n"
"Seed: %s\n",
hex_str((const char*)rng_seed, sizeof(rng_seed)));
}
@ -1190,7 +1194,7 @@ test_stochastic_uniform(void *arg)
.a = -4e-324,
.b = 4e-310,
};
bool ok = true;
bool ok = true, tests_failed = true;
init_deterministic_rand();
MOCK(crypto_rand, crypto_rand_deterministic);
@ -1204,8 +1208,14 @@ test_stochastic_uniform(void *arg)
tt_assert(ok);
tests_failed = false;
done:
;
if (tests_failed) {
dump_seed();
}
teardown_deterministic_rand();
UNMOCK(crypto_rand);
}
static bool