[tor-commits] [tor/master] Fix edge case fail of shared random unittest.

[nickm at torproject.org]

commit 43d317f99c7f30ecf1066b3887d5ef83b75fdb49
Author: George Kadianakis <desnacked at riseup.net>
Date:   Sat Jul 2 02:49:59 2016 +0300

    Fix edge case fail of shared random unittest.
    
    The test_state_update() test would fail if you run it between 23:30 and
    00:00UTC in the following line because n_protocol_runs was 2:
    
      tt_u64_op(state->n_protocol_runs, ==, 1);
    
    The problem is that when you launch the test at 23:30UTC (reveal phase),
    sr_state_update() gets called from sr_state_init() and it will prepare
    the state for the voting round at 00:00UTC (commit phase). Since we
    transition from reveal to commit phase, this would trigger a phase
    transition and increment the n_protocol_runs counter.
    
    The solution is to initialize the n_protocol_runs to 0 explicitly in the
    beginning of the test, as we do for n_reveal_rounds, n_commit_rounds etc.
---
 src/test/test_shared_random.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/test/test_shared_random.c b/src/test/test_shared_random.c
index d001785..91a4c39 100644
--- a/src/test/test_shared_random.c
+++ b/src/test/test_shared_random.c
@@ -1193,6 +1193,7 @@ test_state_update(void *arg)
     state->valid_after = 0;
     state->n_reveal_rounds = 0;
     state->n_commit_rounds = 0;
+    state->n_protocol_runs = 0;
   }
 
   /* We need to mock for the state update function call. */