Add (failing) test script for nested brackets

t/010-nested-bracket.t

@@ -0,0 +1,35 @@
+#!perl -T
+use strict;
+use warnings;
+use Test::More tests => 1;
+
+my $out = Moonfall::NestedBracket->filter(<<'INPUT');
+#site_container {
+    width: [$widths[1]];
+    min-width: [$widths[0]];
+    }
+
+#top_container {
+    width: [$widths[ $widths[3] ]];
+    }
+INPUT
+
+is($out, <<"EXPECTED", "nested brackets work");
+#site_container {
+    width: 200px;
+    min-width: 1000px;
+    }
+
+#top_container {
+    width: 300px;
+    }
+EXPECTED
+
+BEGIN
+{
+    package Moonfall::NestedBracket;
+    use CSS::Moonfall;
+
+    our @widths = (100, 200, 300, 2);
+}
+