* test/net/imap/test_imap.rb (test_idle_timeout): Because of the timeout specified in "imap.idle(0.2)", there is no gurantee that the server thread has done all the work before the client thread performs the assertions. It depends on the thread scheduling. Add checks to avoid false positives (on AIX, particularly).
merge revision(s) 54025: [Backport #12167]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_3@54411 b2dd03c8-39d4-4d8f-98ff-823fe69b080e