diff -up ./PHPUnit/Framework/TestCase.php.php8 ./PHPUnit/Framework/TestCase.php
--- ./PHPUnit/Framework/TestCase.php.php8	2021-03-19 12:29:00.122960437 +0100
+++ ./PHPUnit/Framework/TestCase.php	2021-03-19 12:29:16.926880988 +0100
@@ -1059,7 +1059,7 @@ abstract class PHPUnit_Framework_TestCas
         $this->registerMockObjectsFromTestArguments($testArguments);
 
         try {
-            $testResult = $method->invokeArgs($this, $testArguments);
+            $testResult = $method->invokeArgs($this, array_values($testArguments));
         } catch (Throwable $_e) {
             $e = $_e;
         } catch (Exception $_e) {
diff -up ./PHPUnit/Util/Configuration.php.php8 ./PHPUnit/Util/Configuration.php
--- ./PHPUnit/Util/Configuration.php.php8	2018-02-01 06:50:59.000000000 +0100
+++ ./PHPUnit/Util/Configuration.php	2021-03-19 12:28:10.627194461 +0100
@@ -159,7 +159,7 @@ class PHPUnit_Util_Configuration
         $this->xpath    = new DOMXPath($this->document);
     }
 
-    final private function __clone()
+    private function __clone()
     {
     }
 
diff -up ./tests/_files/Singleton.php.php8 ./tests/_files/Singleton.php
--- ./tests/_files/Singleton.php.php8	2018-02-01 06:50:59.000000000 +0100
+++ ./tests/_files/Singleton.php	2021-03-19 12:28:10.627194461 +0100
@@ -7,7 +7,7 @@ class Singleton
     {
     }
 
-    final private function __clone()
+    private function __clone()
     {
     }
 
diff -up ./tests/Framework/Constraint/JsonMatches/ErrorMessageProviderTest.php.php8 ./tests/Framework/Constraint/JsonMatches/ErrorMessageProviderTest.php
--- ./tests/Framework/Constraint/JsonMatches/ErrorMessageProviderTest.php.php8	2018-02-01 06:50:59.000000000 +0100
+++ ./tests/Framework/Constraint/JsonMatches/ErrorMessageProviderTest.php	2021-03-19 12:28:10.627194461 +0100
@@ -39,7 +39,7 @@ class Framework_Constraint_JsonMatches_E
     {
         return [
             'JSON_ERROR_NONE'  => [
-                null, 'json_error_none', ''
+                null, JSON_ERROR_NONE, ''
             ],
             'JSON_ERROR_DEPTH' => [
                 'Maximum stack depth exceeded', JSON_ERROR_DEPTH, ''
diff -up ./tests/Framework/ConstraintTest.php.php8 ./tests/Framework/ConstraintTest.php
--- ./tests/Framework/ConstraintTest.php.php8	2018-02-01 06:50:59.000000000 +0100
+++ ./tests/Framework/ConstraintTest.php	2021-03-19 12:28:10.627194461 +0100
@@ -1233,7 +1233,7 @@ EOF
 
         $this->assertTrue($constraint->evaluate($resource, '', true));
 
-        @fclose($resource);
+        if (is_resource($resource)) @fclose($resource);
     }
 
     public function testConstraintIsNotType()
@@ -2547,7 +2547,6 @@ EOF
         // Default case.
         $constraint = new PHPUnit_Framework_Constraint_TraversableContains('foo');
 
-        $this->assertTrue($constraint->evaluate([0], '', true));
         $this->assertTrue($constraint->evaluate([true], '', true));
     }