diff --git a/typo3/sysext/core/Tests/Functional/Configuration/Loader/Fixtures/Berta.yaml b/typo3/sysext/core/Tests/Functional/Configuration/Loader/Fixtures/Berta.yaml
new file mode 100644
index 0000000000000000000000000000000000000000..39e2c0f3e56f9f86fd7ec61aa6374455c251b1c9
--- /dev/null
+++ b/typo3/sysext/core/Tests/Functional/Configuration/Loader/Fixtures/Berta.yaml
@@ -0,0 +1,4 @@
+options:
+  - option1
+  - option2
+betterthanbefore: 1
diff --git a/typo3/sysext/core/Tests/Unit/Configuration/Loader/Fixtures/Env/Berta.yml b/typo3/sysext/core/Tests/Functional/Configuration/Loader/Fixtures/Env/Berta.yaml
similarity index 56%
rename from typo3/sysext/core/Tests/Unit/Configuration/Loader/Fixtures/Env/Berta.yml
rename to typo3/sysext/core/Tests/Functional/Configuration/Loader/Fixtures/Env/Berta.yaml
index 5f8748c16779faed7dcaf11814f4c8653ab5e123..ee056e650e2c751236c830d7604c8abd38911bb5 100644
--- a/typo3/sysext/core/Tests/Unit/Configuration/Loader/Fixtures/Env/Berta.yml
+++ b/typo3/sysext/core/Tests/Functional/Configuration/Loader/Fixtures/Env/Berta.yaml
@@ -1,5 +1,5 @@
 imports:
-    - { resource: Secondfile.yml }
+    - { resource: Secondfile.yaml }
 
 options:
     - option1
diff --git a/typo3/sysext/core/Tests/Unit/Configuration/Loader/Fixtures/Env/Env_barbaz.yml b/typo3/sysext/core/Tests/Functional/Configuration/Loader/Fixtures/Env/Env_barbaz.yaml
similarity index 100%
rename from typo3/sysext/core/Tests/Unit/Configuration/Loader/Fixtures/Env/Env_barbaz.yml
rename to typo3/sysext/core/Tests/Functional/Configuration/Loader/Fixtures/Env/Env_barbaz.yaml
diff --git a/typo3/sysext/core/Tests/Functional/Configuration/Loader/Fixtures/Env/Secondfile.yaml b/typo3/sysext/core/Tests/Functional/Configuration/Loader/Fixtures/Env/Secondfile.yaml
new file mode 100644
index 0000000000000000000000000000000000000000..2c8c6017bf96cec8a814e1053b85e3ae2171ba6c
--- /dev/null
+++ b/typo3/sysext/core/Tests/Functional/Configuration/Loader/Fixtures/Env/Secondfile.yaml
@@ -0,0 +1,5 @@
+imports:
+    - { resource: Env_%env("foo")%.yaml }
+
+options:
+    - optionBefore
diff --git a/typo3/sysext/core/Tests/Functional/Configuration/Loader/Fixtures/LoadWithAnImport.yaml b/typo3/sysext/core/Tests/Functional/Configuration/Loader/Fixtures/LoadWithAnImport.yaml
new file mode 100644
index 0000000000000000000000000000000000000000..422b9d25c804c9f2f6bbad27d90100fbbc806d85
--- /dev/null
+++ b/typo3/sysext/core/Tests/Functional/Configuration/Loader/Fixtures/LoadWithAnImport.yaml
@@ -0,0 +1,7 @@
+imports:
+  - { resource: SecondImportedFile.yaml }
+
+options:
+  - option1
+  - option2
+betterthanbefore: 1
diff --git a/typo3/sysext/core/Tests/Unit/Configuration/Loader/Fixtures/Berta.yaml b/typo3/sysext/core/Tests/Functional/Configuration/Loader/Fixtures/LoadWithImportAndRelativeFiles.yaml
similarity index 100%
rename from typo3/sysext/core/Tests/Unit/Configuration/Loader/Fixtures/Berta.yaml
rename to typo3/sysext/core/Tests/Functional/Configuration/Loader/Fixtures/LoadWithImportAndRelativeFiles.yaml
diff --git a/typo3/sysext/core/Tests/Functional/Configuration/Loader/Fixtures/LoadWithMultipleImports.yaml b/typo3/sysext/core/Tests/Functional/Configuration/Loader/Fixtures/LoadWithMultipleImports.yaml
new file mode 100644
index 0000000000000000000000000000000000000000..5dc7aadd004bfac6f808c8a744e391ecbaf1bb6c
--- /dev/null
+++ b/typo3/sysext/core/Tests/Functional/Configuration/Loader/Fixtures/LoadWithMultipleImports.yaml
@@ -0,0 +1,8 @@
+imports:
+  - { resource: SecondImportedFile.yaml }
+  - { resource: ThirdImportedFile.yaml }
+
+options:
+  - option1
+  - option2
+betterthanbefore: 1
diff --git a/typo3/sysext/core/Tests/Functional/Configuration/Loader/Fixtures/LoadWithNestedPlaceholders.yaml b/typo3/sysext/core/Tests/Functional/Configuration/Loader/Fixtures/LoadWithNestedPlaceholders.yaml
new file mode 100644
index 0000000000000000000000000000000000000000..fa901f7a5099a9dfaa71a2d9051a7002d16d28dc
--- /dev/null
+++ b/typo3/sysext/core/Tests/Functional/Configuration/Loader/Fixtures/LoadWithNestedPlaceholders.yaml
@@ -0,0 +1,6 @@
+firstset:
+  myinitialversion: 13
+options:
+  - option1
+  - option2
+betterthanbefore: '%env(foo)%'
diff --git a/typo3/sysext/core/Tests/Functional/Configuration/Loader/Fixtures/LoadWithPlaceholders.yaml b/typo3/sysext/core/Tests/Functional/Configuration/Loader/Fixtures/LoadWithPlaceholders.yaml
new file mode 100644
index 0000000000000000000000000000000000000000..ad2f3a36e47d7e103901258dd4a199d94c00c8e3
--- /dev/null
+++ b/typo3/sysext/core/Tests/Functional/Configuration/Loader/Fixtures/LoadWithPlaceholders.yaml
@@ -0,0 +1,7 @@
+firstset:
+  myinitialversion: 13
+options:
+  - option1
+  - option2
+betterthanbefore: '%firstset.myinitialversion%'
+muchbetterthanbefore: 'some::%options.0%::option'
diff --git a/typo3/sysext/core/Tests/Functional/Configuration/Loader/Fixtures/Placeholder/Berta.yaml b/typo3/sysext/core/Tests/Functional/Configuration/Loader/Fixtures/Placeholder/Berta.yaml
new file mode 100644
index 0000000000000000000000000000000000000000..2fd5dd4d36a7e9dfbbad19eb3e5a312a5547488e
--- /dev/null
+++ b/typo3/sysext/core/Tests/Functional/Configuration/Loader/Fixtures/Placeholder/Berta.yaml
@@ -0,0 +1,5 @@
+imports:
+  - { resource: '%settings.dynamicOption%.yaml' }
+
+settings:
+  dynamicOption: 'Foo'
diff --git a/typo3/sysext/core/Tests/Unit/Configuration/Loader/Fixtures/Placeholder/Foo.yml b/typo3/sysext/core/Tests/Functional/Configuration/Loader/Fixtures/Placeholder/Foo.yaml
similarity index 100%
rename from typo3/sysext/core/Tests/Unit/Configuration/Loader/Fixtures/Placeholder/Foo.yml
rename to typo3/sysext/core/Tests/Functional/Configuration/Loader/Fixtures/Placeholder/Foo.yaml
diff --git a/typo3/sysext/core/Tests/Functional/Configuration/Loader/Fixtures/SecondImportedFile.yaml b/typo3/sysext/core/Tests/Functional/Configuration/Loader/Fixtures/SecondImportedFile.yaml
new file mode 100644
index 0000000000000000000000000000000000000000..cf023b8e1093e690965cfb89875bcd073135520b
--- /dev/null
+++ b/typo3/sysext/core/Tests/Functional/Configuration/Loader/Fixtures/SecondImportedFile.yaml
@@ -0,0 +1,3 @@
+options:
+  - optionBefore
+betterthanbefore: 2
diff --git a/typo3/sysext/core/Tests/Unit/Configuration/Loader/Fixtures/Subfolder/BaseTestInclusion.yaml b/typo3/sysext/core/Tests/Functional/Configuration/Loader/Fixtures/Subfolder/BaseTestInclusion.yaml
similarity index 100%
rename from typo3/sysext/core/Tests/Unit/Configuration/Loader/Fixtures/Subfolder/BaseTestInclusion.yaml
rename to typo3/sysext/core/Tests/Functional/Configuration/Loader/Fixtures/Subfolder/BaseTestInclusion.yaml
diff --git a/typo3/sysext/core/Tests/Functional/Configuration/Loader/Fixtures/ThirdImportedFile.yaml b/typo3/sysext/core/Tests/Functional/Configuration/Loader/Fixtures/ThirdImportedFile.yaml
new file mode 100644
index 0000000000000000000000000000000000000000..45589ab459e9d6cb49bfcbb55aae99e0cc309521
--- /dev/null
+++ b/typo3/sysext/core/Tests/Functional/Configuration/Loader/Fixtures/ThirdImportedFile.yaml
@@ -0,0 +1,2 @@
+options:
+  - optionAfterBefore
diff --git a/typo3/sysext/core/Tests/Functional/Configuration/Loader/YamlFileLoaderTest.php b/typo3/sysext/core/Tests/Functional/Configuration/Loader/YamlFileLoaderTest.php
new file mode 100644
index 0000000000000000000000000000000000000000..1a389d263fbfd188e374c4c0e56805bdd5d8e642
--- /dev/null
+++ b/typo3/sysext/core/Tests/Functional/Configuration/Loader/YamlFileLoaderTest.php
@@ -0,0 +1,208 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+namespace TYPO3\CMS\Core\Tests\Functional\Configuration\Loader;
+
+use TYPO3\CMS\Core\Configuration\Loader\YamlFileLoader;
+use TYPO3\TestingFramework\Core\Functional\FunctionalTestCase;
+
+class YamlFileLoaderTest extends FunctionalTestCase
+{
+    protected bool $resetSingletonInstances = true;
+
+    /**
+     * Generic method to check if the load method returns an array from a YAML file
+     *
+     * @test
+     */
+    public function load(): void
+    {
+        $fileName = 'EXT:core/Tests/Functional/Configuration/Loader/Fixtures/Berta.yaml';
+
+        $expected = [
+            'options' => [
+                'option1',
+                'option2',
+            ],
+            'betterthanbefore' => 1,
+        ];
+        $output = (new YamlFileLoader())->load($fileName);
+        self::assertSame($expected, $output);
+    }
+
+    /**
+     * Method checking for imports that they have been processed properly
+     *
+     * @test
+     */
+    public function loadWithAnImport(): void
+    {
+        $fileName = 'EXT:core/Tests/Functional/Configuration/Loader/Fixtures/LoadWithAnImport.yaml';
+
+        $expected = [
+            'options' => [
+                'optionBefore',
+                'option1',
+                'option2',
+            ],
+            'betterthanbefore' => 1,
+        ];
+
+        $output = (new YamlFileLoader())->load($fileName);
+        self::assertSame($expected, $output);
+    }
+
+    /**
+     * Method checking for multiple imports that they have been loaded in the right order
+     *
+     * @test
+     */
+    public function loadWithMultipleImports(): void
+    {
+        $fileName = 'EXT:core/Tests/Functional/Configuration/Loader/Fixtures/LoadWithMultipleImports.yaml';
+
+        $expected = [
+            'options' => [
+                'optionBefore',
+                'optionAfterBefore',
+                'option1',
+                'option2',
+            ],
+            'betterthanbefore' => 1,
+        ];
+
+        $output = (new YamlFileLoader())->load($fileName);
+        self::assertSame($expected, $output);
+    }
+
+    /**
+     * Method checking for imports that they have been processed properly
+     *
+     * @test
+     */
+    public function loadWithImportAndRelativePaths(): void
+    {
+        $fileName = 'EXT:core/Tests/Functional/Configuration/Loader/Fixtures/LoadWithImportAndRelativeFiles.yaml';
+        $output = (new YamlFileLoader())->load($fileName);
+        self::assertSame(
+            [
+                'enable' => [
+                    'frontend' => false,
+                    'json.api' => true,
+                    'backend' => true,
+                    'rest.api' => true,
+                ],
+            ],
+            $output
+        );
+    }
+
+    /**
+     * Method checking for placeholders
+     *
+     * @test
+     */
+    public function loadWithPlaceholders(): void
+    {
+        $fileName = 'EXT:core/Tests/Functional/Configuration/Loader/Fixtures/LoadWithPlaceholders.yaml';
+        $output = (new YamlFileLoader())->load($fileName);
+
+        $expected = [
+            'firstset' => [
+                'myinitialversion' => 13,
+            ],
+            'options' => [
+                'option1',
+                'option2',
+            ],
+            'betterthanbefore' => 13,
+            'muchbetterthanbefore' => 'some::option1::option',
+        ];
+
+        self::assertSame($expected, $output);
+    }
+
+    /**
+     * Method checking for nested placeholders
+     *
+     * @test
+     */
+    public function loadWithNestedPlaceholders(): void
+    {
+        $fileName = 'EXT:core/Tests/Functional/Configuration/Loader/Fixtures/LoadWithNestedPlaceholders.yaml';
+
+        $expected = [
+            'firstset' => [
+                'myinitialversion' => 13,
+            ],
+            'options' => [
+                'option1',
+                'option2',
+            ],
+            'betterthanbefore' => 13,
+        ];
+
+        putenv('foo=%firstset.myinitialversion%');
+        $output = (new YamlFileLoader())->load($fileName);
+        putenv('foo=');
+        self::assertSame($expected, $output);
+    }
+
+    /**
+     * Method checking for imports with env vars that they have been processed properly
+     *
+     * @test
+     */
+    public function loadWithImportAndEnvVars(): void
+    {
+        $loader = new YamlFileLoader();
+
+        putenv('foo=barbaz');
+        $output = $loader->load('EXT:core/Tests/Functional/Configuration/Loader/Fixtures/Env/Berta.yaml');
+        putenv('foo=');
+
+        $expected = [
+            'loadedWithEnvVars' => 1,
+            'options' => [
+                'optionBefore',
+                'option1',
+                'option2',
+            ],
+        ];
+
+        self::assertSame($expected, $output);
+    }
+
+    /**
+     * Method checking for imports with placeholder values in the file name
+     *
+     * @test
+     */
+    public function loadWithImportAndPlaceholderInFileName(): void
+    {
+        $output = (new YamlFileLoader())->load('EXT:core/Tests/Functional/Configuration/Loader/Fixtures/Placeholder/Berta.yaml');
+
+        $expected = [
+            'loadedWithPlaceholder' => 1,
+            'settings' => [
+                'dynamicOption' => 'Foo',
+            ],
+        ];
+
+        self::assertSame($expected, $output);
+    }
+}
diff --git a/typo3/sysext/core/Tests/Unit/Configuration/Loader/Fixtures/Env/Secondfile.yml b/typo3/sysext/core/Tests/Unit/Configuration/Loader/Fixtures/Env/Secondfile.yml
deleted file mode 100644
index 8f9b401d260f65598c967ef2ed77be56e455f70c..0000000000000000000000000000000000000000
--- a/typo3/sysext/core/Tests/Unit/Configuration/Loader/Fixtures/Env/Secondfile.yml
+++ /dev/null
@@ -1,5 +0,0 @@
-imports:
-    - { resource: Env_%env("foo")%.yml }
-
-options:
-    - optionBefore
diff --git a/typo3/sysext/core/Tests/Unit/Configuration/Loader/Fixtures/Placeholder/Berta.yml b/typo3/sysext/core/Tests/Unit/Configuration/Loader/Fixtures/Placeholder/Berta.yml
deleted file mode 100644
index b49c6ae58ce524fde85f8dd874e2997d42b1370b..0000000000000000000000000000000000000000
--- a/typo3/sysext/core/Tests/Unit/Configuration/Loader/Fixtures/Placeholder/Berta.yml
+++ /dev/null
@@ -1,5 +0,0 @@
-imports:
-  - { resource: '%settings.dynamicOption%.yml' }
-
-settings:
-  dynamicOption: 'Foo'
diff --git a/typo3/sysext/core/Tests/Unit/Configuration/Loader/YamlFileLoaderTest.php b/typo3/sysext/core/Tests/Unit/Configuration/Loader/YamlFileLoaderTest.php
index 3122e75dcdc002d0f151190a20998a05432eb1c1..f3c79f9fd3c1a112d292fcef831b04bbe711546d 100644
--- a/typo3/sysext/core/Tests/Unit/Configuration/Loader/YamlFileLoaderTest.php
+++ b/typo3/sysext/core/Tests/Unit/Configuration/Loader/YamlFileLoaderTest.php
@@ -22,287 +22,6 @@ use TYPO3\TestingFramework\Core\Unit\UnitTestCase;
 
 class YamlFileLoaderTest extends UnitTestCase
 {
-    /**
-     * Generic method to check if the load method returns an array from a YAML file
-     * @test
-     */
-    public function load(): void
-    {
-        $fileName = 'Berta.yml';
-        $fileContents = '
-options:
-    - option1
-    - option2
-betterthanbefore: 1
-';
-
-        $expected = [
-            'options' => [
-                'option1',
-                'option2',
-            ],
-            'betterthanbefore' => 1,
-        ];
-
-        // Accessible mock to $subject since getFileContents calls GeneralUtility methods
-        $subject = $this->getAccessibleMock(YamlFileLoader::class, ['getFileContents', 'getStreamlinedFileName']);
-        $subject->expects(self::once())->method('getStreamlinedFileName')->with($fileName)->willReturn($fileName);
-        $subject->expects(self::once())->method('getFileContents')->with($fileName)->willReturn($fileContents);
-        $output = $subject->load($fileName);
-        self::assertSame($expected, $output);
-    }
-
-    /**
-     * Method checking for imports that they have been processed properly
-     * @test
-     */
-    public function loadWithAnImport(): void
-    {
-        $fileName = 'Berta.yml';
-        $fileContents = '
-imports:
-    - { resource: Secondfile.yml }
-
-options:
-    - option1
-    - option2
-betterthanbefore: 1
-';
-
-        $importFileName = 'Secondfile.yml';
-        $importFileContents = '
-options:
-    - optionBefore
-betterthanbefore: 2
-';
-
-        $expected = [
-            'options' => [
-                'optionBefore',
-                'option1',
-                'option2',
-            ],
-            'betterthanbefore' => 1,
-        ];
-
-        // Accessible mock to $subject since getFileContents calls GeneralUtility methods
-        $subject = $this->getAccessibleMock(YamlFileLoader::class, ['getFileContents', 'getStreamlinedFileName']);
-        $subject->expects(self::exactly(2))->method('getStreamlinedFileName')
-            ->withConsecutive([$fileName], [$importFileName, $fileName])
-            ->willReturn($fileName, $importFileName);
-        $subject->expects(self::exactly(2))->method('getFileContents')
-            ->withConsecutive([$fileName], [$importFileName])
-            ->willReturn($fileContents, $importFileContents);
-        $output = $subject->load($fileName);
-        self::assertSame($expected, $output);
-    }
-
-    /**
-     * Method checking for mulitple imports that they have been loaded in the right order
-     * @test
-     */
-    public function loadWithMultipleImports(): void
-    {
-        $fileName = 'Berta.yml';
-        $fileContents = '
-imports:
-    - { resource: Secondfile.yml }
-    - { resource: Thirdfile.yml }
-
-options:
-    - option1
-    - option2
-betterthanbefore: 1
-';
-
-        $importFileName = 'Secondfile.yml';
-        $importFileContents = '
-options:
-    - optionBefore
-betterthanbefore: 2
-';
-
-        $importFileName2 = 'Thirdfile.yml';
-        $importFileContents2 = '
-options:
-    - optionAfterBefore
-';
-
-        $expected = [
-            'options' => [
-                'optionBefore',
-                'optionAfterBefore',
-                'option1',
-                'option2',
-            ],
-            'betterthanbefore' => 1,
-        ];
-
-        // Accessible mock to $subject since getFileContents calls GeneralUtility methods
-        $subject = $this->getAccessibleMock(YamlFileLoader::class, ['getFileContents', 'getStreamlinedFileName']);
-
-        $subject
-            ->expects(self::exactly(3))
-            ->method('getStreamlinedFileName')
-            ->withConsecutive([$fileName, null], [$importFileName2, $fileName], [$importFileName, $fileName])
-            ->willReturnOnConsecutiveCalls(
-                $fileName,
-                $importFileName2,
-                $importFileName
-            );
-
-        $subject
-            ->expects(self::exactly(3))
-            ->method('getFileContents')
-            ->withConsecutive([$fileName], [$importFileName2], [$importFileName])
-            ->willReturnOnConsecutiveCalls(
-                $fileContents,
-                $importFileContents2,
-                $importFileContents
-            );
-
-        $output = $subject->load($fileName);
-        self::assertSame($expected, $output);
-    }
-
-    /**
-     * Method checking for imports that they have been processed properly
-     * @test
-     */
-    public function loadWithImportAndRelativePaths(): void
-    {
-        $subject = new YamlFileLoader();
-        $result = $subject->load(__DIR__ . '/Fixtures/Berta.yaml');
-        self::assertSame([
-            'enable' => [
-                'frontend' => false,
-                'json.api' => true,
-                'backend' => true,
-                'rest.api' => true,
-            ],
-        ], $result);
-    }
-
-    /**
-     * Method checking for placeholders
-     * @test
-     */
-    public function loadWithPlaceholders(): void
-    {
-        $fileName = 'Berta.yml';
-        $fileContents = '
-
-firstset:
-  myinitialversion: 13
-options:
-    - option1
-    - option2
-betterthanbefore: \'%firstset.myinitialversion%\'
-muchbetterthanbefore: \'some::%options.0%::option\'
-';
-
-        $expected = [
-            'firstset' => [
-                'myinitialversion' => 13,
-            ],
-            'options' => [
-                'option1',
-                'option2',
-            ],
-            'betterthanbefore' => 13,
-            'muchbetterthanbefore' => 'some::option1::option',
-        ];
-
-        // Accessible mock to $subject since getFileContents calls GeneralUtility methods
-        $subject = $this->getAccessibleMock(YamlFileLoader::class, ['getFileContents', 'getStreamlinedFileName']);
-        $subject->expects(self::once())->method('getStreamlinedFileName')->with($fileName)->willReturn($fileName);
-        $subject->expects(self::once())->method('getFileContents')->with($fileName)->willReturn($fileContents);
-        $output = $subject->load($fileName);
-        self::assertSame($expected, $output);
-    }
-
-    /**
-     * Method checking for nested placeholders
-     * @test
-     */
-    public function loadWithNestedPlaceholders(): void
-    {
-        $fileName = 'Berta.yml';
-        $fileContents = '
-
-firstset:
-  myinitialversion: 13
-options:
-    - option1
-    - option2
-betterthanbefore: \'%env(foo)%\'
-';
-
-        $expected = [
-            'firstset' => [
-                'myinitialversion' => 13,
-            ],
-            'options' => [
-                'option1',
-                'option2',
-            ],
-            'betterthanbefore' => 13,
-        ];
-
-        // Accessible mock to $subject since getFileContents calls GeneralUtility methods
-        $subject = $this->getAccessibleMock(YamlFileLoader::class, ['getFileContents', 'getStreamlinedFileName']);
-        $subject->expects(self::once())->method('getStreamlinedFileName')->with($fileName)->willReturn($fileName);
-        $subject->expects(self::once())->method('getFileContents')->with($fileName)->willReturn($fileContents);
-
-        putenv('foo=%firstset.myinitialversion%');
-        $output = $subject->load($fileName);
-        putenv('foo=');
-        self::assertSame($expected, $output);
-    }
-
-    /**
-     * Method checking for imports with env vars that they have been processed properly
-     * @test
-     */
-    public function loadWithImportAndEnvVars(): void
-    {
-        $loader = new YamlFileLoader();
-
-        putenv('foo=barbaz');
-        $output = $loader->load(__DIR__ . '/Fixtures/Env/Berta.yml');
-        putenv('foo=');
-
-        $expected = [
-            'loadedWithEnvVars' => 1,
-            'options' => [
-                'optionBefore',
-                'option1',
-                'option2',
-            ],
-        ];
-
-        self::assertSame($expected, $output);
-    }
-
-    /**
-     * Method checking for imports with placeholder values in the file name
-     * @test
-     */
-    public function loadWithImportAndPlaceholderInFileName(): void
-    {
-        $loader = new YamlFileLoader();
-        $output = $loader->load(__DIR__ . '/Fixtures/Placeholder/Berta.yml');
-
-        $expected = [
-            'loadedWithPlaceholder' => 1,
-            'settings' => [
-                'dynamicOption' => 'Foo',
-            ],
-        ];
-
-        self::assertSame($expected, $output);
-    }
-
     public function loadWithEnvVarDataProvider(): array
     {
         return [
@@ -484,9 +203,8 @@ betterthanbefore: \'%env(mynonexistingenv)%\'
      * @test
      * @param mixed $placeholderValue
      * @param bool $expected
-     * @skip
      */
-    public function containsPlaceholderTest($placeholderValue, bool $expected): void
+    public function containsPlaceholderTest(mixed $placeholderValue, bool $expected): void
     {
         $subject = $this->getAccessibleMock(YamlFileLoader::class, ['dummy']);
         $output = $subject->_call('containsPlaceholder', $placeholderValue);