commit 029d2c65875d81a0052020cabefee465f9d44c24 Author: Nick Mathewson <nickm@torproject.org> Date: Fri Feb 8 16:46:35 2013 -0500 Unit test for tor_weak_random_range --- src/test/test_util.c | 29 +++++++++++++++++++++++++++++ 1 files changed, 29 insertions(+), 0 deletions(-) diff --git a/src/test/test_util.c b/src/test/test_util.c index bed33fa..a66941b 100644 --- a/src/test/test_util.c +++ b/src/test/test_util.c @@ -3242,6 +3242,34 @@ test_util_set_env_var_in_sl(void *ptr) } static void +test_util_weak_random(void *arg) +{ + int i, j, n[16]; + tor_weak_rng_t rng; + (void) arg; + + tor_init_weak_random(&rng, (unsigned)time(NULL)); + + for (i = 1; i <= 256; ++i) { + for (j=0;j<100;++j) { + int r = tor_weak_random_range(&rng, i); + tt_int_op(0, <=, r); + tt_int_op(r, <, i); + } + } + + memset(n,0,sizeof(n)); + for (j=0;j<8192;++j) { + n[tor_weak_random_range(&rng, 16)]++; + } + + for (i=0;i<16;++i) + tt_int_op(n[i], >, 0); + done: + ; +} + +static void test_util_mathlog(void *arg) { double d; @@ -3312,6 +3340,7 @@ struct testcase_t util_tests[] = { UTIL_TEST(read_file_eof_two_loops, 0), UTIL_TEST(read_file_eof_zero_bytes, 0), UTIL_TEST(mathlog, 0), + UTIL_TEST(weak_random, 0), END_OF_TESTCASES };