tests: replace select/usleep calls with tick()

This makes it easier to identify places in tests which cause
unnecessary slowdowns doing busy waits.

1 files changed, 1 insertions, 1 deletions

diff --git a/t/httpd-corner.t b/t/httpd-corner.t
index e16e8dc8..88820270 100644
--- a/t/httpd-corner.t
+++ b/t/httpd-corner.t
@@ -320,7 +320,7 @@ sub conn_for {
         $spawn_httpd->('-W0');
 }
 
-sub delay { select(undef, undef, undef, shift || rand(0.02)) }
+sub delay { tick(shift || rand(0.02)) }
 
 my $str = 'abcdefghijklmnopqrstuvwxyz';
 my $len = length $str;