Merge pull request #921 from ychin/fix-flaky-suspend-test

Fix flaky test_suspend script test

Author: ychin

src/testdir/test_suspend.vim

@@ -54,6 +54,7 @@ func Test_suspend()
   " Quit gracefully to dump coverage information.
   call term_sendkeys(buf, ":qall!\<CR>")
   call term_wait(buf)
+  call WaitForAssert({-> assert_match('[$#] $', term_getline(buf, '.'))})
   call StopShellInTerminal(buf)
 
   exe buf . 'bwipe!'