append_layout: load floating containers correctly

fixes #1739
fixes #1271

testcases/t/249-layout-restore-floating.t

@@ -0,0 +1,82 @@
+#!perl
+# vim:ts=4:sw=4:expandtab
+#
+# Please read the following documents before working on tests:
+# • http://build.i3wm.org/docs/testsuite.html
+#   (or docs/testsuite)
+#
+# • http://build.i3wm.org/docs/lib-i3test.html
+#   (alternatively: perldoc ./testcases/lib/i3test.pm)
+#
+# • http://build.i3wm.org/docs/ipc.html
+#   (or docs/ipc)
+#
+# • http://onyxneon.com/books/modern_perl/modern_perl_a4.pdf
+#   (unless you are already familiar with Perl)
+#
+# Verifies floating containers are restored in the correct place in the
+# hierarchy and get a non-zero size.
+# Ticket: #1739
+# Bug still in: 4.10.3-264-g419b73b
+use i3test;
+use File::Temp qw(tempfile);
+use IO::Handle;
+
+my $ws = fresh_workspace;
+
+my @content = @{get_ws_content($ws)};
+is(@content, 0, 'no nodes on the new workspace yet');
+
+my ($fh, $filename) = tempfile(UNLINK => 1);
+print $fh <<'EOT';
+// vim:ts=4:sw=4:et
+{
+    // floating_con with 1 children
+    "border": "none",
+    "floating": "auto_off",
+    "layout": "splith",
+    "percent": null,
+    "type": "floating_con",
+    // NOTE that "rect" is missing here.
+    "nodes": [
+        {
+            "border": "none",
+            "current_border_width": 0,
+            "floating": "user_on",
+            "geometry": {
+               "height": 384,
+               "width": 128,
+               "x": 448,
+               "y": 441
+            },
+            "name": "Splash",
+            "percent": 1,
+            "swallows": [
+               {
+                "class": "^Steam$",
+                "instance": "^Steam$",
+                "title": "^Steam$"
+               // "transient_for": "^$"
+               }
+            ],
+            "type": "con"
+        }
+    ]
+}
+EOT
+$fh->flush;
+my $reply = cmd "append_layout $filename";
+
+does_i3_live;
+
+ok($reply->[0]->{success}, 'Layout successfully loaded');
+
+cmd 'kill';
+
+ok(workspace_exists($ws), 'Workspace still exists');
+
+does_i3_live;
+
+close($fh);
+
+done_testing;