diff --git a/typo3/sysext/fluid/Tests/Unit/Core/Parser/SyntaxTree/ViewHelperNodeTest.php b/typo3/sysext/fluid/Tests/Unit/Core/Parser/SyntaxTree/ViewHelperNodeTest.php
index 2cba275e4760920e8adec9a8ddaf099151064459..7b9c7eed420d0666a6c674d7086a0c12a084ac70 100644
--- a/typo3/sysext/fluid/Tests/Unit/Core/Parser/SyntaxTree/ViewHelperNodeTest.php
+++ b/typo3/sysext/fluid/Tests/Unit/Core/Parser/SyntaxTree/ViewHelperNodeTest.php
@@ -85,9 +85,10 @@ class ViewHelperNodeTest extends \TYPO3\CMS\Core\Tests\UnitTestCase
      */
     public function childNodeAccessFacetWorksAsExpected()
     {
-        $childNode = $this->getMock(\TYPO3\CMS\Fluid\Core\Parser\SyntaxTree\TextNode::class, [], ['foo']);
+        $childNode = $this->getMock(\TYPO3\CMS\Fluid\Core\Parser\SyntaxTree\TextNode::class, [], ['prepareArguments']);
 
         $mockViewHelper = $this->getMock(\TYPO3\CMS\Fluid\Tests\Unit\Core\Parser\Fixtures\ChildNodeAccessFacetViewHelper::class, ['setChildNodes', 'initializeArguments', 'render', 'prepareArguments']);
+        $mockViewHelper->expects($this->any())->method('prepareArguments')->willReturn([]);
 
         $viewHelperNode = new \TYPO3\CMS\Fluid\Core\Parser\SyntaxTree\ViewHelperNode($mockViewHelper, []);
         $viewHelperNode->addChildNode($childNode);
@@ -104,6 +105,7 @@ class ViewHelperNodeTest extends \TYPO3\CMS\Core\Tests\UnitTestCase
     {
         $mockViewHelper = $this->getMock(\TYPO3\CMS\Fluid\Core\ViewHelper\AbstractViewHelper::class, ['initializeArgumentsAndRender', 'prepareArguments']);
         $mockViewHelper->expects($this->once())->method('initializeArgumentsAndRender');
+        $mockViewHelper->expects($this->any())->method('prepareArguments')->willReturn([]);
 
         $viewHelperNode = new \TYPO3\CMS\Fluid\Core\Parser\SyntaxTree\ViewHelperNode($mockViewHelper, []);
 
@@ -140,6 +142,7 @@ class ViewHelperNodeTest extends \TYPO3\CMS\Core\Tests\UnitTestCase
     {
         $mockViewHelper = $this->getMock(\TYPO3\CMS\Fluid\Core\ViewHelper\AbstractViewHelper::class, ['render', 'validateArguments', 'prepareArguments', 'setRenderingContext']);
         $mockViewHelper->expects($this->once())->method('setRenderingContext')->with($this->renderingContext);
+        $mockViewHelper->expects($this->any())->method('prepareArguments')->willReturn([]);
 
         $viewHelperNode = new \TYPO3\CMS\Fluid\Core\Parser\SyntaxTree\ViewHelperNode($mockViewHelper, []);
 
@@ -153,6 +156,7 @@ class ViewHelperNodeTest extends \TYPO3\CMS\Core\Tests\UnitTestCase
     {
         $mockViewHelper = $this->getMock(\TYPO3\CMS\Fluid\Core\ViewHelper\AbstractViewHelper::class, ['render', 'validateArguments', 'prepareArguments', 'setViewHelperVariableContainer']);
         $mockViewHelper->expects($this->any())->method('render')->will($this->returnValue('String'));
+        $mockViewHelper->expects($this->any())->method('prepareArguments')->willReturn([]);
 
         $viewHelperNode = new \TYPO3\CMS\Fluid\Core\Parser\SyntaxTree\ViewHelperNode($mockViewHelper, []);
 
diff --git a/typo3/sysext/fluid/Tests/Unit/Core/ViewHelper/AbstractViewHelperTest.php b/typo3/sysext/fluid/Tests/Unit/Core/ViewHelper/AbstractViewHelperTest.php
index 710857f8c9d48540511abfcf611ee1a43d05d460..66318883d71ea0d361bb29f40c245b4afdbdeedc 100644
--- a/typo3/sysext/fluid/Tests/Unit/Core/ViewHelper/AbstractViewHelperTest.php
+++ b/typo3/sysext/fluid/Tests/Unit/Core/ViewHelper/AbstractViewHelperTest.php
@@ -69,6 +69,8 @@ class AbstractViewHelperTest extends \TYPO3\CMS\Core\Tests\UnitTestCase
     public function argumentsCanBeRegistered()
     {
         $viewHelper = $this->getAccessibleMock(\TYPO3\CMS\Fluid\Core\ViewHelper\AbstractViewHelper::class, ['render'], [], '', false);
+
+        $this->mockReflectionService->method('getMethodParameters')->willReturn([]);
         $viewHelper->injectReflectionService($this->mockReflectionService);
 
         $name = 'This is a name';
@@ -104,6 +106,7 @@ class AbstractViewHelperTest extends \TYPO3\CMS\Core\Tests\UnitTestCase
     public function overrideArgumentOverwritesExistingArgumentDefinition()
     {
         $viewHelper = $this->getAccessibleMock(\TYPO3\CMS\Fluid\Core\ViewHelper\AbstractViewHelper::class, ['render'], [], '', false);
+        $this->mockReflectionService->method('getMethodParameters')->willReturn([]);
         $viewHelper->injectReflectionService($this->mockReflectionService);
 
         $name = 'argumentName';
@@ -137,6 +140,7 @@ class AbstractViewHelperTest extends \TYPO3\CMS\Core\Tests\UnitTestCase
     public function prepareArgumentsCallsInitializeArguments()
     {
         $viewHelper = $this->getAccessibleMock(\TYPO3\CMS\Fluid\Core\ViewHelper\AbstractViewHelper::class, ['render', 'initializeArguments'], [], '', false);
+        $this->mockReflectionService->method('getMethodParameters')->willReturn([]);
         $viewHelper->injectReflectionService($this->mockReflectionService);
 
         $viewHelper->expects($this->once())->method('initializeArguments');