diff --git a/core/modules/rest/tests/src/Kernel/RequestHandlerTest.php b/core/modules/rest/tests/src/Kernel/RequestHandlerTest.php
index 39820d8..17e5aba 100644
--- a/core/modules/rest/tests/src/Kernel/RequestHandlerTest.php
+++ b/core/modules/rest/tests/src/Kernel/RequestHandlerTest.php
@@ -162,14 +162,6 @@ public function providerTestSerialization() {
    * @dataProvider providerTestResponseFormat
    */
   public function testResponseFormat($methods, array $supported_formats, $request_format, array $request_headers, $request_body, $expected_response_content_type, $expected_response_content) {
-    assert('\Drupal\Component\Assertion\Inspector::assertAllStrings($methods) && count($methods) > 0');
-    assert('\Drupal\Component\Assertion\Inspector::assertAllStrings($supported_formats) && count($methods) > 0');
-    assert('is_string($request_format) || $request_format === FALSE');
-    assert('\Drupal\Component\Assertion\Inspector::assertAllStrings($request_headers)');
-    assert('is_string($request_body) || is_null($request_body)');
-    assert('is_string($expected_response_content_type) || is_null($expected_response_content_type)');
-    assert('is_string($expected_response_content)');
-
     $rest_config_name = $this->randomMachineName();
 
     $parameters = [];