diff --git a/tests/phpunit/tests/functions.php b/tests/phpunit/tests/functions.php
index 13a0ff4726..f520967f27 100644
--- a/tests/phpunit/tests/functions.php
+++ b/tests/phpunit/tests/functions.php
@@ -501,13 +501,6 @@ class Tests_Functions extends WP_UnitTestCase {
 		);
 	}
 
-	/**
-	 * @ticket 19354
-	 */
-	function test_data_is_not_an_allowed_protocol() {
-		$this->assertNotContains( 'data', wp_allowed_protocols() );
-	}
-
 	/**
 	 * @ticket 9064
 	 */
diff --git a/tests/phpunit/tests/functions/allowedProtocols.php b/tests/phpunit/tests/functions/allowedProtocols.php
new file mode 100644
index 0000000000..77c04d4522
--- /dev/null
+++ b/tests/phpunit/tests/functions/allowedProtocols.php
@@ -0,0 +1,61 @@
+<?php
+
+/**
+ * @group formatting
+ * @group functions.php
+ */
+class Tests_Functions_AllowedProtocols extends WP_UnitTestCase {
+
+	/**
+	 * @ticket 19354
+	 */
+	function test_data_is_not_an_allowed_protocol() {
+		$this->assertNotContains( 'data', wp_allowed_protocols() );
+	}
+
+	function test_allowed_protocol_has_an_example() {
+		$example_protocols = array();
+		foreach ( $this->data_example_urls() as $example ) {
+			$example_protocols[] = $example[0];
+		}
+		$this->assertEqualSets( $example_protocols, wp_allowed_protocols() );
+	}
+
+	/**
+	 * @depends test_allowed_protocol_has_an_example
+	 * @dataProvider data_example_urls
+	 *
+	 * @param string The scheme.
+	 * @param string Example URL.
+	 */
+	function test_allowed_protocols( $protocol, $url ) {
+		$this->assertEquals( $url, esc_url( $url, $protocol ) );
+		$this->assertEquals( $url, esc_url( $url, wp_allowed_protocols() ) );
+	}
+
+	/**
+	 * @link http://www.iana.org/assignments/uri-schemes/uri-schemes.xhtml
+	 */
+	function data_example_urls() {
+		return array(
+			array( 'http', 'http://example.com' ), // RFC7230
+			array( 'https', 'http://example.com' ), // RFC7230
+			array( 'ftp', 'ftp://example.com' ), // RFC1738
+			array( 'ftps', 'ftps://example.com' ),
+			array( 'mailto', 'mailto://someone@example.com' ), // RFC6068
+			array( 'news', 'news://news.server.example/example.group.this' ), // RFC5538
+			array( 'irc', 'irc://example.com/wordpress' ),
+			array( 'gopher', 'gopher://example.com/7a_gopher_selector%09foobar' ), // RFC4266
+			array( 'nntp', 'nntp://news.server.example/example.group.this' ), // RFC5538
+			array( 'feed', 'feed://example.com/rss.xml' ),
+			array( 'telnet', 'telnet://user:password@example.com:80/' ), // RFC4248
+			array( 'mms', 'mms://example.com:80/path' ),
+			array( 'rtsp', 'rtsp://media.example.com:554/wordpress/audiotrack' ), // RFC2326
+			array( 'svn', 'svn://core.svn.wordpress.org/' ),
+			array( 'tel', 'tel:+1-234-567-8910' ), // RFC3966
+			array( 'fax', 'fax:+123.456.78910' ), // RFC2806/RFC3966
+			array( 'xmpp', 'xmpp://guest@example.com' ), // RFC5122
+			array( 'webcal', 'webcal://example.com/calendar.ics' ),
+		);
+	}
+}