diff --git a/tests/Node/Expression/CallTest.php b/tests/Node/Expression/CallTest.php
index 08e65228f..c6530dab9 100644
--- a/tests/Node/Expression/CallTest.php
+++ b/tests/Node/Expression/CallTest.php
@@ -158,7 +158,6 @@ class CallTest extends TestCase
     private function getArguments($call, $args)
     {
         $m = new \ReflectionMethod($call, 'getArguments');
-        $m->setAccessible(true);
 
         return $m->invokeArgs($call, $args);
     }
diff --git a/tests/ParserTest.php b/tests/ParserTest.php
index d103fefbf..4648b5b6c 100644
--- a/tests/ParserTest.php
+++ b/tests/ParserTest.php
@@ -77,7 +77,6 @@ class ParserTest extends TestCase
     {
         $parser = $this->getParser();
         $m = new \ReflectionMethod($parser, 'filterBodyNodes');
-        $m->setAccessible(true);
 
         $this->assertEquals($expected, $m->invoke($parser, $input));
     }
@@ -108,7 +107,6 @@ class ParserTest extends TestCase
         $parser = $this->getParser();
 
         $m = new \ReflectionMethod($parser, 'filterBodyNodes');
-        $m->setAccessible(true);
 
         $this->expectException(SyntaxError::class);
         $m->invoke($parser, $input);
@@ -130,7 +128,6 @@ class ParserTest extends TestCase
         $parser = $this->getParser();
 
         $m = new \ReflectionMethod($parser, 'filterBodyNodes');
-        $m->setAccessible(true);
         $this->assertNull($m->invoke($parser, new TextNode(\chr(0xEF).\chr(0xBB).\chr(0xBF).$emptyNode, 1)));
     }
 
@@ -165,7 +162,6 @@ class ParserTest extends TestCase
         ], new Source('', '')));
 
         $p = new \ReflectionProperty($parser, 'parent');
-        $p->setAccessible(true);
         $this->assertNull($p->getValue($parser));
     }
 
@@ -216,7 +212,6 @@ EOF
         $parser->setParent(new EmptyNode());
 
         $p = new \ReflectionProperty($parser, 'stream');
-        $p->setAccessible(true);
         $p->setValue($parser, new TokenStream([], new Source('', '')));
 
         return $parser;
diff --git a/tests/Profiler/Dumper/ProfilerTestCase.php b/tests/Profiler/Dumper/ProfilerTestCase.php
index 24f2da2a1..30f79673b 100644
--- a/tests/Profiler/Dumper/ProfilerTestCase.php
+++ b/tests/Profiler/Dumper/ProfilerTestCase.php
@@ -48,7 +48,6 @@ abstract class ProfilerTestCase extends TestCase
         ];
 
         $p = new \ReflectionProperty($profile, 'profiles');
-        $p->setAccessible(true);
         $p->setValue($profile, $subProfiles);
 
         return $profile;
@@ -92,18 +91,15 @@ abstract class ProfilerTestCase extends TestCase
         $profile = new Profile($templateName, $type, $name);
 
         $p = new \ReflectionProperty($profile, 'profiles');
-        $p->setAccessible(true);
         $p->setValue($profile, $subProfiles);
 
         $starts = new \ReflectionProperty($profile, 'starts');
-        $starts->setAccessible(true);
         $starts->setValue($profile, [
             'wt' => 0,
             'mu' => 0,
             'pmu' => 0,
         ]);
         $ends = new \ReflectionProperty($profile, 'ends');
-        $ends->setAccessible(true);
         $ends->setValue($profile, [
             'wt' => $duration,
             'mu' => 0,
diff --git a/tests/TemplateTest.php b/tests/TemplateTest.php
index 8cdb8d065..74ac5a7cb 100644
--- a/tests/TemplateTest.php
+++ b/tests/TemplateTest.php
@@ -203,7 +203,7 @@ class TemplateTest extends TestCase
         }
         $this->assertSame('FloatButString', $array['1.5']);
         $this->assertSame('IntegerButStringWithLeadingZeros', $array['01']);
-        $this->assertSame('EmptyString', $array[null]);
+        $this->assertSame('EmptyString', $array['']);
 
         $this->assertSame('Zero', CoreExtension::getAttribute($twig, $template->getSourceContext(), $array, false), 'false is treated as 0 when accessing a sequence/mapping (equals PHP behavior)');
         $this->assertSame('One', CoreExtension::getAttribute($twig, $template->getSourceContext(), $array, true), 'true is treated as 1 when accessing a sequence/mapping (equals PHP behavior)');