Index: tests/phpunit/tests/formatting/make-link-relative.php
===================================================================
--- tests/phpunit/tests/formatting/make-link-relative.php	(revision 0)
+++ tests/phpunit/tests/formatting/make-link-relative.php	(revision 0)
@@ -0,0 +1,8 @@
+<?php
+class Tests_Formatting_Make_Link_Relative extends WP_UnitTestCase {
+	function tests_make_link_relative() {
+		$input = "http://wordpress.org";
+		$expected = "/";
+		$this->assertEquals( $expected, wp_make_link_relative( $input ) );
+	}
+}
\ No newline at end of file