Bugfix: 'level up' needs to stop at the workspace con + testcase (Thanks mseed)

src/tree.c

@@ -268,8 +268,9 @@ void tree_split(Con *con, orientation_t orientation) {
  */
 void level_up() {
     /* We can focus up to the workspace, but not any higher in the tree */
-    if (focused->parent->type != CT_CON &&
+    if ((focused->parent->type != CT_CON &&
-        focused->parent->type != CT_WORKSPACE) {
+        focused->parent->type != CT_WORKSPACE) ||
+        focused->type == CT_WORKSPACE) {
         printf("cannot go up\n");
         return;
     }

testcases/t/52-regress-level-up.t

@@ -0,0 +1,21 @@
+#!perl
+# vim:ts=4:sw=4:expandtab
+#
+# Regression test for using level-up to get to the 'content'-container and
+# toggle floating
+#
+use Time::HiRes qw(sleep);
+use i3test;
+
+my $tmp = get_unused_workspace;
+cmd "workspace $tmp";
+
+
+cmd 'open';
+cmd 'level up';
+cmd 'level up';
+cmd 'mode toggle';
+
+does_i3_live;
+
+done_testing;