diff --git a/packages/Testing/Fixture/FixtureSplitter.php b/packages/Testing/Fixture/FixtureSplitter.php
index 77990978768..38a1320ff1d 100644
--- a/packages/Testing/Fixture/FixtureSplitter.php
+++ b/packages/Testing/Fixture/FixtureSplitter.php
@@ -5,7 +5,6 @@
 
 use Nette\Utils\FileSystem;
 use Nette\Utils\Strings;
-use Webmozart\Assert\Assert;
 
 /**
  * @api
@@ -33,4 +32,12 @@ public static function split(string $filePath): array
 
         return Strings::split($fixtureFileContents, self::SPLIT_LINE_REGEX);
     }
+
+    /**
+     * @return array<string, string>
+     */
+    public static function splitFixtureFileContents(string $fixtureFileContents): array
+    {
+        return Strings::split($fixtureFileContents, self::SPLIT_LINE_REGEX);
+    }
 }
diff --git a/packages/Testing/PHPUnit/AbstractRectorTestCase.php b/packages/Testing/PHPUnit/AbstractRectorTestCase.php
index e67a41ba6fc..be6f93eaa0b 100644
--- a/packages/Testing/PHPUnit/AbstractRectorTestCase.php
+++ b/packages/Testing/PHPUnit/AbstractRectorTestCase.php
@@ -107,7 +107,7 @@ protected function doTestFile(string $fixtureFilePath): void
 
         if (FixtureSplitter::containsSplit($fixtureFileContents)) {
             // changed content
-            [$inputFileContents, $expectedFileContents] = FixtureSplitter::split($fixtureFilePath);
+            [$inputFileContents, $expectedFileContents] = FixtureSplitter::splitFixtureFileContents($fixtureFileContents);
         } else {
             // no change
             $inputFileContents = $fixtureFileContents;