Use do-while instead of while in tests.

This forces all the loop bodies to be executed at least once, which is
harmless since it just means one more tox event loop iteration. This
reduces the jitter we see in coverage measurements, which is partially
caused by loops sometimes being entered and sometimes not (because their
condition happens to randomly already be true).

1 files changed, 4 insertions, 5 deletions

diff --git a/auto_tests/conference_peer_nick_test.c b/auto_tests/conference_peer_nick_test.c
index e99d3b79..14676b76 100644
--- a/auto_tests/conference_peer_nick_test.c
+++ b/auto_tests/conference_peer_nick_test.c
@@ -107,26 +107,25 @@ static void conference_peer_nick_test(Tox **toxes, State *state)
 
     fprintf(stderr, "Waiting for invitation to arrive and peers to be in the group\n");
 
-    while (!state[0].joined || !state[1].joined || !state[0].friend_in_group || !state[1].friend_in_group) {
+    do {
         tox_iterate(toxes[0], &state[0]);
         tox_iterate(toxes[1], &state[1]);
 
         c_sleep(ITERATION_INTERVAL);
-    }
+    } while (!state[0].joined || !state[1].joined || !state[0].friend_in_group || !state[1].friend_in_group);
 
     fprintf(stderr, "Running tox0, but not tox1, waiting for tox1 to drop out\n");
 
-    while (state[0].friend_in_group) {
+    do {
         tox_iterate(toxes[0], &state[0]);
 
         // Rebuild peer list after every iteration.
         rebuild_peer_list(toxes[0]);
 
         c_sleep(ITERATION_INTERVAL);
-    }
+    } while (state[0].friend_in_group);
 
     fprintf(stderr, "Invitations accepted\n");
-
 }
 
 int main(void)