--- /dev/null
+#!./perl
+
+BEGIN {
+ chdir 't' if -d 't';
+ @INC = '../lib';
+}
+
+print "1..1\n";
+
+use File::CheckTree;
+
+# We assume that we run from the perl "t" directory.
+
+validate q{
+ lib -d || die
+ lib/checktree.t -f || die
+};
+
+print "ok 1\n";