Add a test

Test correct handling of accept headers with semicolon without equal sign

Author: theboolean

src/Header/AbstractAccept.php

@@ -170,7 +170,12 @@ protected function getParametersFromFieldValuePart($fieldValuePart)
             foreach ($paramsStrings as $param) {
                 $explode = explode('=', $param, 2);
 
-                $value = trim($explode[1]);
+                if (count($explode) === 2) {
+                    $value = trim($explode[1]);
+                } else {
+                    $value = trim($param);
+                }
+
                 if (isset($value[0]) && $value[0] == '"' && substr($value, -1) == '"') {
                     $value = substr(substr($value, 1), 0, -1);
                 }

test/Header/AcceptCharsetTest.php

@@ -32,6 +32,12 @@ public function testAcceptCharsetGetFieldValueReturnsProperValue()
         $this->assertEquals('xxx', $acceptCharsetHeader->getFieldValue());
     }
 
+    public function testAcceptCharsetGetFieldValueReturnsProperValueWithSemicolonWithoutEqualSign()
+    {
+        $acceptCharsetHeader = AcceptCharset::fromString('Accept-Charset: xxx;yyy');
+        $this->assertEquals('xxx;yyy', $acceptCharsetHeader->getFieldValue());
+    }
+
     public function testAcceptCharsetToStringReturnsHeaderFormattedString()
     {
         $acceptCharsetHeader = new AcceptCharset();