diff --git a/src/TestUtils/SerializableElementTestTrait.php b/src/TestUtils/SerializableElementTestTrait.php
index 4fb7d9c..27736a1 100644
--- a/src/TestUtils/SerializableElementTestTrait.php
+++ b/src/TestUtils/SerializableElementTestTrait.php
@@ -22,6 +22,38 @@ trait SerializableElementTestTrait
     protected static DOMDocument $xmlRepresentation;
 
 
+    /**
+     * Test creating XML from a class.
+     */
+    abstract public function testMarshalling(): void;
+
+
+    /**
+     * Test creating a class from XML.
+     */
+    public function testUnmarshalling(): void
+    {
+        if (!class_exists(self::$testedClass)) {
+            $this->markTestSkipped(
+                'Unable to run ' . self::class . '::testUnmarshalling(). Please set ' . self::class
+                . ':$testedClass to a class-string representing the XML-class being tested',
+            );
+        } elseif (empty(self::$xmlRepresentation)) {
+            $this->markTestSkipped(
+                'Unable to run ' . self::class . '::testUnmarshalling(). Please set ' . self::class
+                . ':$xmlRepresentation to a DOMDocument representing the XML-class being tested',
+            );
+        } else {
+            $elt = self::$testedClass::fromXML(self::$xmlRepresentation->documentElement);
+
+            $this->assertEquals(
+                self::$xmlRepresentation->saveXML(self::$xmlRepresentation->documentElement),
+                strval($elt),
+            );
+        }
+    }
+
+
     /**
      * Test serialization / unserialization.
      *
@@ -47,10 +79,4 @@ public function testSerialization(): void
             );
         }
     }
-
-
-    abstract public function testMarshalling(): void;
-
-
-    abstract public function testUnmarshalling(): void;
 }
diff --git a/tests/XML/AbstractElementTest.php b/tests/XML/AbstractElementTest.php
index cf6a330..97906ec 100644
--- a/tests/XML/AbstractElementTest.php
+++ b/tests/XML/AbstractElementTest.php
@@ -54,6 +54,7 @@ public function testMarshalling(): void
 
     /**
      */
+    #[Override]
     public function testUnmarshalling(): void
     {
         $element = Element::fromXML(self::$xmlRepresentation->documentElement);
diff --git a/tests/XML/Base64ElementTraitTest.php b/tests/XML/Base64ElementTraitTest.php
index 8b5e140..0640fbe 100644
--- a/tests/XML/Base64ElementTraitTest.php
+++ b/tests/XML/Base64ElementTraitTest.php
@@ -57,6 +57,7 @@ public function testMarshalling(): void
 
     /**
      */
+    #[Override]
     public function testUnmarshalling(): void
     {
         $base64Element = Base64Element::fromXML(self::$xmlRepresentation->documentElement);
diff --git a/tests/XML/ChunkTest.php b/tests/XML/ChunkTest.php
index 97fd7f6..153c78f 100644
--- a/tests/XML/ChunkTest.php
+++ b/tests/XML/ChunkTest.php
@@ -53,6 +53,7 @@ public function testMarshalling(): void
 
     /**
      */
+    #[Override]
     public function testUnmarshalling(): void
     {
         $element = Chunk::fromXML(self::$xmlRepresentation->documentElement);
diff --git a/tests/XML/ExtendableAttributesTest.php b/tests/XML/ExtendableAttributesTest.php
index 833d174..2cfe820 100644
--- a/tests/XML/ExtendableAttributesTest.php
+++ b/tests/XML/ExtendableAttributesTest.php
@@ -57,17 +57,4 @@ public function testMarshalling(): void
             strval($extendableElement),
         );
     }
-
-
-    /**
-     */
-    public function testUnmarshalling(): void
-    {
-        $extendableElement = ExtendableAttributesElement::fromXML(self::$xmlRepresentation->documentElement);
-
-        $this->assertEquals(
-            self::$xmlRepresentation->saveXML(self::$xmlRepresentation->documentElement),
-            strval($extendableElement),
-        );
-    }
 }
diff --git a/tests/XML/ExtendableElementTest.php b/tests/XML/ExtendableElementTest.php
index 73f32b9..8e5238c 100644
--- a/tests/XML/ExtendableElementTest.php
+++ b/tests/XML/ExtendableElementTest.php
@@ -58,17 +58,4 @@ public function testMarshalling(): void
             strval($extendableElement),
         );
     }
-
-
-    /**
-     */
-    public function testUnmarshalling(): void
-    {
-        $extendableElement = ExtendableElement::fromXML(self::$xmlRepresentation->documentElement);
-
-        $this->assertEquals(
-            self::$xmlRepresentation->saveXML(self::$xmlRepresentation->documentElement),
-            strval($extendableElement),
-        );
-    }
 }
diff --git a/tests/XML/LocalizedStringElementTraitTest.php b/tests/XML/LocalizedStringElementTraitTest.php
index c7bba0d..968b8e5 100644
--- a/tests/XML/LocalizedStringElementTraitTest.php
+++ b/tests/XML/LocalizedStringElementTraitTest.php
@@ -50,15 +50,4 @@ public function testMarshalling(): void
             strval($localizedStringElement),
         );
     }
-
-
-    /**
-     */
-    public function testUnmarshalling(): void
-    {
-        $localizedStringElement = LocalizedStringElement::fromXML(self::$xmlRepresentation->documentElement);
-
-        $this->assertEquals('en', $localizedStringElement->getLanguage());
-        $this->assertEquals('test', $localizedStringElement->getContent());
-    }
 }
diff --git a/tests/XML/QNameElementTraitTest.php b/tests/XML/QNameElementTraitTest.php
index 9607565..35f2fa2 100644
--- a/tests/XML/QNameElementTraitTest.php
+++ b/tests/XML/QNameElementTraitTest.php
@@ -76,17 +76,6 @@ public function testMarshallingInvalidQualifiedNameThrowsException(): void
     }
 
 
-    /**
-     */
-    public function testUnmarshalling(): void
-    {
-        $qnameElement = QNameElement::fromXML(self::$xmlRepresentation->documentElement);
-
-        $this->assertEquals('env:Sender', $qnameElement->getContent());
-        $this->assertEquals('http://www.w3.org/2003/05/soap-envelope', $qnameElement->getContentNamespaceUri());
-    }
-
-
     /**
      */
     public function testUnmarshallingNonNamepacedQualifiedName(): void
diff --git a/tests/XML/StringElementTraitTest.php b/tests/XML/StringElementTraitTest.php
index e8c17de..14893ab 100644
--- a/tests/XML/StringElementTraitTest.php
+++ b/tests/XML/StringElementTraitTest.php
@@ -50,14 +50,4 @@ public function testMarshalling(): void
             strval($stringElement),
         );
     }
-
-
-    /**
-     */
-    public function testUnmarshalling(): void
-    {
-        $stringElement = StringElement::fromXML(self::$xmlRepresentation->documentElement);
-
-        $this->assertEquals('test', $stringElement->getContent());
-    }
 }