Add window resizing test

src/tests/e2e-test

@@ -135,6 +135,8 @@ for i in $test_args; do
 	    server_tests="$server_tests $i";;
 	verify|same|different)
 	    compare_tests="$compare_tests $i";;
+	tmux)
+	    tmux=1;;
 	client)
 	    client=1;;
 	post)
@@ -152,6 +154,11 @@ if [ -n "$client" ]; then
     client_wrapper="${test_script} client"
 fi
 
+tmux_stdin="${srcdir}/hold-stdin"
+if [ -n "$tmux" ];  then
+    tmux_stdin="${test_script} tmux"
+fi
+
 for run in $server_tests; do
     log "Running server test %s.\n" "$run"
 	# XXX need to quote special chars in server pathname here somehow
@@ -163,7 +170,7 @@ for run in $server_tests; do
 	# Actually execute code under test
 	# XXX tmux 1.8 requires shell command as a single arg; once we move to 2.0, undo these quotes
 	# XXX this ignores $TMPDIR, because it results in an overlong pathname on OS X
-	if ! ${srcdir}/hold-stdin tmux -S "/tmp/.tmux-mosh-test-$$" -C new-session "${srcdir}/print-exitstatus ${client_wrapper} ${sut} \"${srcdir}/e2e-test-server\" \"${PWD}/${test_dir}/${run}\" \"${PWD}/${test_script} ${testarg}\"" > "${test_dir}/${run}.tmux.log"; then
+	if ! ${tmux_stdin} tmux -S "/tmp/.tmux-mosh-test-$$" -C new-session "${srcdir}/print-exitstatus ${client_wrapper} ${sut} \"${srcdir}/e2e-test-server\" \"${PWD}/${test_dir}/${run}\" \"${PWD}/${test_script} ${testarg}\"" > "${test_dir}/${run}.tmux.log"; then
 	    test_error "tmux failure on test %s\n" "$run"
 	fi
 	# Check for mosh failures