--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/vendor/sabre/vobject/tests/VObject/EmptyParameterTest.php	Sat Jan 13 09:06:10 2018 -0500
@@ -0,0 +1,69 @@
+<?php
+
+namespace Sabre\VObject;
+
+class IssueEmptyParameterTest extends \PHPUnit_Framework_TestCase {
+
+    function testRead() {
+
+        $input = <<<VCF
+BEGIN:VCARD
+VERSION:2.1
+N:Doe;Jon;;;
+FN:Jon Doe
+EMAIL;X-INTERN:foo@example.org
+UID:foo
+END:VCARD
+VCF;
+
+        $vcard = Reader::read($input);
+
+        $this->assertInstanceOf('Sabre\\VObject\\Component\\VCard', $vcard);
+        $vcard = $vcard->convert(\Sabre\VObject\Document::VCARD30);
+        $vcard = $vcard->serialize();
+
+        $converted = Reader::read($vcard);
+        $converted->validate();
+
+        $this->assertTrue(isset($converted->EMAIL['X-INTERN']));
+
+        $version = Version::VERSION;
+
+        $expected = <<<VCF
+BEGIN:VCARD
+VERSION:3.0
+PRODID:-//Sabre//Sabre VObject $version//EN
+N:Doe;Jon;;;
+FN:Jon Doe
+EMAIL;X-INTERN=:foo@example.org
+UID:foo
+END:VCARD
+
+VCF;
+
+        $this->assertEquals($expected, str_replace("\r","", $vcard));
+
+    }
+
+    function testVCard21Parameter() {
+
+        $vcard = new Component\VCard(array(), false);
+        $vcard->VERSION = '2.1';
+        $vcard->PHOTO = 'random_stuff';
+        $vcard->PHOTO->add(null,'BASE64');
+        $vcard->UID = 'foo-bar';
+
+        $result = $vcard->serialize();
+        $expected = array(
+            "BEGIN:VCARD",
+            "VERSION:2.1",
+            "PHOTO;BASE64:" . base64_encode('random_stuff'),
+            "UID:foo-bar",
+            "END:VCARD",
+            "",
+        );
+
+        $this->assertEquals(implode("\r\n", $expected), $result);
+
+    }
+}