commit a2b53c1d0bb759bfe039bb417281bda743655bfe Author: Nick Mathewson nickm@torproject.org Date: Tue May 1 19:58:39 2018 -0400

coverage: Repeat the test for avoiding failed intro points

This test, in test_client_pick_intro(), will have different coverage depending on whether it selects a good intro point the first time or whether it has to try a few times. Since it produces the shorter coverage with P=1/4, repeat this test 64 times so that it only provides reduced coverage with P=1/2^128. The performance cost is negligible.

Closes ticket 25996. This test was introduced in 0.3.2.1-alpha. --- changes/ticket25996 | 5 +++++ src/test/test_hs_client.c | 18 +++++++++++------- 2 files changed, 16 insertions(+), 7 deletions(-)

diff --git a/changes/ticket25996 b/changes/ticket25996 new file mode 100644 index 000000000..f523bc630 --- /dev/null +++ b/changes/ticket25996 @@ -0,0 +1,5 @@ + o Minor bugfixes (testing): + - Repeat part of the test in test_client_pick_intro() a number of times, + to give it consistent coverage. Fixes bug 25996; bugfix on + 0.3.2.1-alpha. + diff --git a/src/test/test_hs_client.c b/src/test/test_hs_client.c index 58e12abca..50dca588e 100644 --- a/src/test/test_hs_client.c +++ b/src/test/test_hs_client.c @@ -397,21 +397,25 @@ test_client_pick_intro(void *arg) } SMARTLIST_FOREACH_END(ip);

/* Try to get a random intro: Should return the chosen one! */ - extend_info_t *ip = client_get_random_intro(&service_kp.pubkey); - tor_assert(ip); - tt_assert(!tor_mem_is_zero((char*)ip->identity_digest, DIGEST_LEN)); - tt_mem_op(ip->identity_digest, OP_EQ, chosen_intro_ei->identity_digest, - DIGEST_LEN); + /* (We try several times, to make sure this behavior is consistent, and to + * cover the different cases of client_get_random_intro().) */ + for (int i = 0; i < 64; ++i) { + extend_info_t *ip = client_get_random_intro(&service_kp.pubkey); + tor_assert(ip); + tt_assert(!tor_mem_is_zero((char*)ip->identity_digest, DIGEST_LEN)); + tt_mem_op(ip->identity_digest, OP_EQ, chosen_intro_ei->identity_digest, + DIGEST_LEN); + extend_info_free(ip); + }

extend_info_free(chosen_intro_ei); - extend_info_free(ip);

/* Now also mark the chosen one as failed: See that we can't get any intro points anymore. */ hs_cache_client_intro_state_note(&service_kp.pubkey, &chosen_intro_point->auth_key_cert->signed_key, INTRO_POINT_FAILURE_TIMEOUT); - ip = client_get_random_intro(&service_kp.pubkey); + extend_info_t *ip = client_get_random_intro(&service_kp.pubkey); tor_assert(!ip); }