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-rw-r--r--src/test/test.c19
1 files changed, 19 insertions, 0 deletions
diff --git a/src/test/test.c b/src/test/test.c
index 41fca424ca..b1e5345b3c 100644
--- a/src/test/test.c
+++ b/src/test/test.c
@@ -350,6 +350,18 @@ test_onion_queues(void *arg)
tor_free(onionskin);
}
+static crypto_cipher_t *crypto_rand_aes_cipher = NULL;
+
+// Mock replacement for crypto_rand: Generates bytes from a provided AES_CTR
+// cipher in <b>crypto_rand_aes_cipher</b>.
+static void
+crypto_rand_deterministic_aes(char *out, size_t n)
+{
+ tor_assert(crypto_rand_aes_cipher);
+ memset(out, 0, n);
+ crypto_cipher_crypt_inplace(crypto_rand_aes_cipher, out, n);
+}
+
static void
test_circuit_timeout(void *arg)
{
@@ -379,6 +391,11 @@ test_circuit_timeout(void *arg)
state = or_state_new();
+ // Use a deterministic RNG here, or else we'll get nondeterministic
+ // coverage in some of the circuitstats functions.
+ MOCK(crypto_rand, crypto_rand_deterministic_aes);
+ crypto_rand_aes_cipher = crypto_cipher_new("xyzzyplughplover");
+
circuitbuild_running_unit_tests();
#define timeout0 (build_time_t)(30*1000.0)
initial.Xm = 3000;
@@ -513,6 +530,8 @@ test_circuit_timeout(void *arg)
circuit_build_times_free_timeouts(&final);
or_state_free(state);
teardown_periodic_events();
+ UNMOCK(crypto_rand);
+ crypto_cipher_free(crypto_rand_aes_cipher);
}
/** Test encoding and parsing of rendezvous service descriptors. */