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, 2 insertions, 2 deletions

diff --git a/auto_tests/conference_double_invite_test.c b/auto_tests/conference_double_invite_test.c
index 026c2fcb..33026986 100644
--- a/auto_tests/conference_double_invite_test.c
+++ b/auto_tests/conference_double_invite_test.c
@@ -63,12 +63,12 @@ static void conference_double_invite_test(Tox **toxes, State *state)
 
     fprintf(stderr, "Waiting for invitation to arrive\n");
 
-    while (!state[0].joined || !state[1].joined) {
+    do {
         tox_iterate(toxes[0], &state[0]);
         tox_iterate(toxes[1], &state[1]);
 
         c_sleep(ITERATION_INTERVAL);
-    }
+    } while (!state[0].joined || !state[1].joined);
 
     fprintf(stderr, "Invitations accepted\n");