Test attribute setting better

lib/DOM/Element.php

@@ -46,6 +46,14 @@ class Element extends \DOMElement {
         return ($tree->current() !== null);
     }
 
+    public function hasAttribute($name) {
+        $out = parent::hasAttribute($name);
+        if (!$out && strpos($name, "xmlns:") === 0 && $this->hasAttributeNS(Parser::XMLNS_NAMESPACE, substr($name, 6))) {
+            return true;
+        }
+        return $out;
+    }
+
     public function setAttribute($name, $value) {
         $this->setAttributeNS(null, $name, $value);
     }

tests/cases/TestDOM.php

@@ -128,7 +128,9 @@ class TestDOM extends \PHPUnit\Framework\TestCase {
         $d = new Document;
         $e = $d->createElementNS($elementNS, "test");
         $e->setAttributeNS($attrNS, $nameIn, "test");
-        $this->assertTrue($e->hasAttributeNS($attrNS, $nameOut));
+        $this->assertSame(1, $e->attributes->length);
+        $this->assertTrue($e->hasAttribute($nameOut));
+        $this->assertSame($attrNS, $e->attributes[0]->namespaceURI);
     }
 
     public function provideNamespacedAttributeSettings(): iterable {
@@ -141,11 +143,11 @@ class TestDOM extends \PHPUnit\Framework\TestCase {
             [null,                                 null,                            "TEST:TEST",   "testU00003Atest"],
             ["http://www.w3.org/1999/xhtml",       null,                            "test:test",   "testU00003Atest"],
             ["http://www.w3.org/1999/xhtml",       null,                            "TEST:TEST",   "testU00003Atest"],
-            [null,                                 "http://www.w3.org/1999/xhtml",  "test:test",   "test"],
-            [null,                                 "http://www.w3.org/1999/xhtml",  "TEST:TEST",   "TEST"],
+            [null,                                 "http://www.w3.org/1999/xhtml",  "test:test",   "test:test"],
+            [null,                                 "http://www.w3.org/1999/xhtml",  "TEST:TEST",   "TEST:TEST"],
             ["http://www.w3.org/1998/Math/MathML", null,                            "test",        "test"],
             ["http://www.w3.org/1998/Math/MathML", null,                            "TEST",        "TEST"],
-            [null,                                 "http://www.w3.org/2000/xmlns/", "xmlns:xlink", "xlink"],
+            [null,                                 "http://www.w3.org/2000/xmlns/", "xmlns:xlink", "xmlns:xlink"],
         ];
     }
 }