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coverage: Repeat the test for avoiding failed intro points

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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.
This commit is contained in:
Nick Mathewson 2018-05-01 19:58:39 -04:00
parent 60fad8d41f
commit a2b53c1d0b
2 changed files with 16 additions and 7 deletions
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5
changes/ticket25996 Normal file
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@ -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.

18
src/test/test_hs_client.c
View File

@ -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);
}