diff --git a/src/Testing/PHPStanTestCase.php b/src/Testing/PHPStanTestCase.php
index 3f65cdc23f..82b58ba4f4 100644
--- a/src/Testing/PHPStanTestCase.php
+++ b/src/Testing/PHPStanTestCase.php
@@ -165,13 +165,11 @@ public function createReflectionProvider(): ReflectionProvider
 		$setterReflectionProviderProvider->setReflectionProvider($reflectionProvider);
 
 		$dynamicReturnTypeExtensionRegistryProvider = new DirectDynamicReturnTypeExtensionRegistryProvider(
-			array_merge(self::getContainer()->getServicesByTag(BrokerFactory::DYNAMIC_METHOD_RETURN_TYPE_EXTENSION_TAG), $this->getDynamicMethodReturnTypeExtensions()),
-			array_merge(self::getContainer()->getServicesByTag(BrokerFactory::DYNAMIC_STATIC_METHOD_RETURN_TYPE_EXTENSION_TAG), $this->getDynamicStaticMethodReturnTypeExtensions()),
-			array_merge(self::getContainer()->getServicesByTag(BrokerFactory::DYNAMIC_FUNCTION_RETURN_TYPE_EXTENSION_TAG), $this->getDynamicFunctionReturnTypeExtensions())
-		);
-		$operatorTypeSpecifyingExtensionRegistryProvider = new DirectOperatorTypeSpecifyingExtensionRegistryProvider(
-			$this->getOperatorTypeSpecifyingExtensions()
+			self::getContainer()->getServicesByTag(BrokerFactory::DYNAMIC_METHOD_RETURN_TYPE_EXTENSION_TAG),
+			self::getContainer()->getServicesByTag(BrokerFactory::DYNAMIC_STATIC_METHOD_RETURN_TYPE_EXTENSION_TAG),
+			self::getContainer()->getServicesByTag(BrokerFactory::DYNAMIC_FUNCTION_RETURN_TYPE_EXTENSION_TAG)
 		);
+		$operatorTypeSpecifyingExtensionRegistryProvider = new DirectOperatorTypeSpecifyingExtensionRegistryProvider([]);
 
 		$broker = new Broker(
 			$reflectionProvider,
@@ -605,38 +603,6 @@ public function getCurrentWorkingDirectory(): string
 		return $this->getFileHelper()->normalizePath(__DIR__ . '/../..');
 	}
 
-	/**
-	 * @return \PHPStan\Type\DynamicMethodReturnTypeExtension[]
-	 */
-	public function getDynamicMethodReturnTypeExtensions(): array
-	{
-		return [];
-	}
-
-	/**
-	 * @return \PHPStan\Type\DynamicStaticMethodReturnTypeExtension[]
-	 */
-	public function getDynamicStaticMethodReturnTypeExtensions(): array
-	{
-		return [];
-	}
-
-	/**
-	 * @return \PHPStan\Type\DynamicFunctionReturnTypeExtension[]
-	 */
-	public function getDynamicFunctionReturnTypeExtensions(): array
-	{
-		return [];
-	}
-
-	/**
-	 * @return \PHPStan\Type\OperatorTypeSpecifyingExtension[]
-	 */
-	public function getOperatorTypeSpecifyingExtensions(): array
-	{
-		return [];
-	}
-
 	/**
 	 * @param \PhpParser\PrettyPrinter\Standard $printer
 	 * @param \PHPStan\Reflection\ReflectionProvider $reflectionProvider
diff --git a/tests/PHPStan/Rules/Comparison/IfConstantConditionRuleTest.php b/tests/PHPStan/Rules/Comparison/IfConstantConditionRuleTest.php
index 4ad516f3ce..4623df6293 100644
--- a/tests/PHPStan/Rules/Comparison/IfConstantConditionRuleTest.php
+++ b/tests/PHPStan/Rules/Comparison/IfConstantConditionRuleTest.php
@@ -2,13 +2,6 @@
 
 namespace PHPStan\Rules\Comparison;
 
-use PhpParser\Node\Expr\FuncCall;
-use PHPStan\Analyser\Scope;
-use PHPStan\Reflection\FunctionReflection;
-use PHPStan\Type\Constant\ConstantBooleanType;
-use PHPStan\Type\DynamicFunctionReturnTypeExtension;
-use PHPStan\Type\Type;
-
 /**
  * @extends \PHPStan\Testing\RuleTestCase<IfConstantConditionRule>
  */
@@ -39,28 +32,6 @@ protected function shouldTreatPhpDocTypesAsCertain(): bool
 		return $this->treatPhpDocTypesAsCertain;
 	}
 
-	/**
-	 * @return DynamicFunctionReturnTypeExtension[]
-	 */
-	public function getDynamicFunctionReturnTypeExtensions(): array
-	{
-		return [
-			new class implements DynamicFunctionReturnTypeExtension {
-
-				public function isFunctionSupported(FunctionReflection $functionReflection): bool
-				{
-					return $functionReflection->getName() === 'always_true';
-				}
-
-				public function getTypeFromFunctionCall(FunctionReflection $functionReflection, FuncCall $functionCall, Scope $scope): Type
-				{
-					return new ConstantBooleanType(true);
-				}
-
-			},
-		];
-	}
-
 	public function testRule(): void
 	{
 		$this->treatPhpDocTypesAsCertain = true;
diff --git a/tests/PHPStan/Rules/Comparison/data/function-definition.php b/tests/PHPStan/Rules/Comparison/data/function-definition.php
index c4ef947394..e65c199f14 100644
--- a/tests/PHPStan/Rules/Comparison/data/function-definition.php
+++ b/tests/PHPStan/Rules/Comparison/data/function-definition.php
@@ -1,5 +1,6 @@
 <?php
 
+/** @return true */
 function always_true()
 {
 	return true;