diff --git a/tests/PhpWordTests/Element/AbstractElementTest.php b/tests/PhpWordTests/Element/AbstractElementTest.php
index 8219871f73..307225b8f4 100644
--- a/tests/PhpWordTests/Element/AbstractElementTest.php
+++ b/tests/PhpWordTests/Element/AbstractElementTest.php
@@ -30,7 +30,13 @@ class AbstractElementTest extends \PHPUnit\Framework\TestCase
      */
     public function testElementIndex(): void
     {
-        $stub = $this->getMockForAbstractClass(AbstractElement::class);
+        if (method_exists($this, 'getMockForAbstractClass')) {
+            $stub = $this->getMockForAbstractClass(AbstractElement::class);
+        } else {
+            /** @var AbstractElement $stub */
+            $stub = new class() extends AbstractElement {
+            };
+        }
         $ival = mt_rand(0, 100);
         $stub->setElementIndex($ival);
         self::assertEquals($ival, $stub->getElementIndex());
@@ -41,7 +47,13 @@ public function testElementIndex(): void
      */
     public function testElementId(): void
     {
-        $stub = $this->getMockForAbstractClass(AbstractElement::class);
+        if (method_exists($this, 'getMockForAbstractClass')) {
+            $stub = $this->getMockForAbstractClass(AbstractElement::class);
+        } else {
+            /** @var AbstractElement $stub */
+            $stub = new class() extends AbstractElement {
+            };
+        }
         $stub->setElementId();
         self::assertEquals(6, strlen($stub->getElementId()));
     }
diff --git a/tests/PhpWordTests/Style/AbstractStyleTest.php b/tests/PhpWordTests/Style/AbstractStyleTest.php
index 2f1585fd5a..2b8d3d8d17 100644
--- a/tests/PhpWordTests/Style/AbstractStyleTest.php
+++ b/tests/PhpWordTests/Style/AbstractStyleTest.php
@@ -20,6 +20,7 @@
 
 use InvalidArgumentException;
 use PhpOffice\PhpWord\SimpleType\Jc;
+use PhpOffice\PhpWord\Style\AbstractStyle;
 use PhpOffice\PhpWord\Style\Paragraph;
 use ReflectionClass;
 
@@ -35,7 +36,13 @@ class AbstractStyleTest extends \PHPUnit\Framework\TestCase
      */
     public function testSetStyleByArray(): void
     {
-        $stub = $this->getMockForAbstractClass('\PhpOffice\PhpWord\Style\AbstractStyle');
+        if (method_exists($this, 'getMockForAbstractClass')) {
+            $stub = $this->getMockForAbstractClass(AbstractStyle::class);
+        } else {
+            /** @var AbstractStyle $stub */
+            $stub = new class() extends AbstractStyle {
+            };
+        }
         $stub->setStyleByArray(['index' => 1]);
 
         self::assertEquals(1, $stub->getIndex());
@@ -62,7 +69,13 @@ public function testSetStyleByArrayWithAlignment(): void
      */
     public function testSetValNormal(): void
     {
-        $stub = $this->getMockForAbstractClass('\PhpOffice\PhpWord\Style\AbstractStyle');
+        if (method_exists($this, 'getMockForAbstractClass')) {
+            $stub = $this->getMockForAbstractClass(AbstractStyle::class);
+        } else {
+            /** @var AbstractStyle $stub */
+            $stub = new class() extends AbstractStyle {
+            };
+        }
 
         self::assertTrue(self::callProtectedMethod($stub, 'setBoolVal', [true, false]));
         self::assertEquals(12, self::callProtectedMethod($stub, 'setIntVal', [12, 200]));
@@ -76,7 +89,13 @@ public function testSetValNormal(): void
      */
     public function testSetValDefault(): void
     {
-        $stub = $this->getMockForAbstractClass('\PhpOffice\PhpWord\Style\AbstractStyle');
+        if (method_exists($this, 'getMockForAbstractClass')) {
+            $stub = $this->getMockForAbstractClass(AbstractStyle::class);
+        } else {
+            /** @var AbstractStyle $stub */
+            $stub = new class() extends AbstractStyle {
+            };
+        }
 
         self::assertNotTrue(self::callProtectedMethod($stub, 'setBoolVal', ['a', false]));
         self::assertEquals(200, self::callProtectedMethod($stub, 'setIntVal', ['foo', 200]));
@@ -90,7 +109,13 @@ public function testSetValDefault(): void
     public function testSetValEnumException(): void
     {
         $this->expectException(InvalidArgumentException::class);
-        $stub = $this->getMockForAbstractClass('\PhpOffice\PhpWord\Style\AbstractStyle');
+        if (method_exists($this, 'getMockForAbstractClass')) {
+            $stub = $this->getMockForAbstractClass(AbstractStyle::class);
+        } else {
+            /** @var AbstractStyle $stub */
+            $stub = new class() extends AbstractStyle {
+            };
+        }
 
         self::assertEquals('b', self::callProtectedMethod($stub, 'setEnumVal', ['z', ['a', 'b'], 'b']));
     }
diff --git a/tests/PhpWordTests/Writer/EPub3/Part/AbstractPartTest.php b/tests/PhpWordTests/Writer/EPub3/Part/AbstractPartTest.php
index 5151eea24c..c12980c7e2 100644
--- a/tests/PhpWordTests/Writer/EPub3/Part/AbstractPartTest.php
+++ b/tests/PhpWordTests/Writer/EPub3/Part/AbstractPartTest.php
@@ -15,7 +15,16 @@ class AbstractPartTest extends TestCase
 
     protected function setUp(): void
     {
-        $this->part = $this->getMockForAbstractClass(AbstractPart::class);
+        if (method_exists($this, 'getMockForAbstractClass')) {
+            $this->part = $this->getMockForAbstractClass(AbstractPart::class);
+        } else {
+            $this->part = new class() extends AbstractPart {
+                public function write(): string
+                {
+                    return '';
+                }
+            };
+        }
     }
 
     public function testParentWriter(): void
diff --git a/tests/PhpWordTests/Writer/EPub3/Style/AbstractStyleTest.php b/tests/PhpWordTests/Writer/EPub3/Style/AbstractStyleTest.php
index fb9135f0cd..12be0f2e4f 100644
--- a/tests/PhpWordTests/Writer/EPub3/Style/AbstractStyleTest.php
+++ b/tests/PhpWordTests/Writer/EPub3/Style/AbstractStyleTest.php
@@ -14,7 +14,17 @@ class AbstractStyleTest extends TestCase
     public function testParentWriter(): void
     {
         $parentWriter = new EPub3();
-        $style = $this->getMockForAbstractClass(AbstractStyle::class);
+        if (method_exists($this, 'getMockForAbstractClass')) {
+            $style = $this->getMockForAbstractClass(AbstractStyle::class);
+        } else {
+            /** @var AbstractStyle $style */
+            $style = new class() extends AbstractStyle {
+                public function write(): string
+                {
+                    return '';
+                }
+            };
+        }
 
         $result = $style->setParentWriter($parentWriter);
 
diff --git a/tests/PhpWordTests/Writer/ODText/Part/AbstractPartTest.php b/tests/PhpWordTests/Writer/ODText/Part/AbstractPartTest.php
index 6742b20ad5..27008dae82 100644
--- a/tests/PhpWordTests/Writer/ODText/Part/AbstractPartTest.php
+++ b/tests/PhpWordTests/Writer/ODText/Part/AbstractPartTest.php
@@ -34,7 +34,17 @@ class AbstractPartTest extends \PHPUnit\Framework\TestCase
      */
     public function testSetGetParentWriter(): void
     {
-        $object = $this->getMockForAbstractClass(ODText\Part\AbstractPart::class);
+        if (method_exists($this, 'getMockForAbstractClass')) {
+            $object = $this->getMockForAbstractClass(ODText\Part\AbstractPart::class);
+        } else {
+            /** @var ODText\Part\AbstractPart $object */
+            $object = new class() extends ODText\Part\AbstractPart {
+                public function write(): string
+                {
+                    return '';
+                }
+            };
+        }
         $object->setParentWriter(new ODText());
         self::assertEquals(new ODText(), $object->getParentWriter());
     }
@@ -46,7 +56,17 @@ public function testSetGetParentWriterNull(): void
     {
         $this->expectException(Exception::class);
         $this->expectExceptionMessage('No parent WriterInterface assigned.');
-        $object = $this->getMockForAbstractClass(ODText\Part\AbstractPart::class);
+        if (method_exists($this, 'getMockForAbstractClass')) {
+            $object = $this->getMockForAbstractClass(ODText\Part\AbstractPart::class);
+        } else {
+            /** @var ODText\Part\AbstractPart $object */
+            $object = new class() extends ODText\Part\AbstractPart {
+                public function write(): string
+                {
+                    return '';
+                }
+            };
+        }
         $object->getParentWriter();
     }
 }
diff --git a/tests/PhpWordTests/Writer/Word2007/Part/AbstractPartTest.php b/tests/PhpWordTests/Writer/Word2007/Part/AbstractPartTest.php
index 04cdb5ff52..ca38d5d3fc 100644
--- a/tests/PhpWordTests/Writer/Word2007/Part/AbstractPartTest.php
+++ b/tests/PhpWordTests/Writer/Word2007/Part/AbstractPartTest.php
@@ -32,9 +32,19 @@ class AbstractPartTest extends \PHPUnit\Framework\TestCase
      */
     public function testSetGetParentWriter(): void
     {
-        $object = $this->getMockForAbstractClass(Word2007\Part\AbstractPart::class);
-        $object->setParentWriter(new Word2007());
-        self::assertEquals(new Word2007(), $object->getParentWriter());
+        if (method_exists($this, 'getMockForAbstractClass')) {
+            $stub = $this->getMockForAbstractClass(Word2007\Part\AbstractPart::class);
+        } else {
+            /** @var Word2007\Part\AbstractPart $stub */
+            $stub = new class() extends Word2007\Part\AbstractPart {
+                public function write(): string
+                {
+                    return '';
+                }
+            };
+        }
+        $stub->setParentWriter(new Word2007());
+        self::assertEquals(new Word2007(), $stub->getParentWriter());
     }
 
     /**
@@ -44,7 +54,17 @@ public function testSetGetParentWriterNull(): void
     {
         $this->expectException(Exception::class);
         $this->expectExceptionMessage('No parent WriterInterface assigned.');
-        $object = $this->getMockForAbstractClass(Word2007\Part\AbstractPart::class);
-        $object->getParentWriter();
+        if (method_exists($this, 'getMockForAbstractClass')) {
+            $stub = $this->getMockForAbstractClass(Word2007\Part\AbstractPart::class);
+        } else {
+            /** @var Word2007\Part\AbstractPart $stub */
+            $stub = new class() extends Word2007\Part\AbstractPart {
+                public function write(): string
+                {
+                    return '';
+                }
+            };
+        }
+        $stub->getParentWriter();
     }
 }