diff --git a/testcases/t/183-config-variables.t b/testcases/t/183-config-variables.t
new file mode 100644
index 00000000..1da25a65
--- /dev/null
+++ b/testcases/t/183-config-variables.t
@@ -0,0 +1,72 @@
+#!perl
+# vim:ts=4:sw=4:expandtab
+#
+# Checks that variables are parsed correctly by using for_window rules with
+# variables in it.
+#
+
+use i3test i3_autostart => 0;
+
+# starts i3 with the given config, opens a window, returns its border style
+sub launch_get_border {
+    my ($config) = @_;
+
+    my $pid = launch_with_config($config);
+
+    my $i3 = i3(get_socket_path(0));
+    my $tmp = fresh_workspace;
+
+    my $window = open_window(name => 'special title');
+
+    my @content = @{get_ws_content($tmp)};
+    cmp_ok(@content, '==', 1, 'one node on this workspace now');
+    my $border = $content[0]->{border};
+
+    exit_gracefully($pid);
+
+    return $border;
+}
+
+#####################################################################
+# test thet windows get the default border
+#####################################################################
+
+my $config = <<EOT;
+# i3 config file (v4)
+font -misc-fixed-medium-r-normal--13-120-75-75-C-70-iso10646-1
+EOT
+
+is(launch_get_border($config), 'normal', 'normal border');
+
+#####################################################################
+# now use a variable and for_window
+#####################################################################
+
+$config = <<'EOT';
+# i3 config file (v4)
+font -misc-fixed-medium-r-normal--13-120-75-75-C-70-iso10646-1
+
+set $vartest special title
+for_window [title="$vartest"] border none
+EOT
+
+is(launch_get_border($config), 'none', 'no border');
+
+#####################################################################
+# check that whitespaces and tabs are ignored
+#####################################################################
+
+$config = <<'EOT';
+# i3 config file (v4)
+font -misc-fixed-medium-r-normal--13-120-75-75-C-70-iso10646-1
+
+set               $vartest             special title
+for_window [title="$vartest"] border none
+EOT
+
+is(launch_get_border($config), 'none', 'no border');
+
+
+
+done_testing;
+