diff --git a/Tests/CacheWarmer/HydratorCacheWarmerTest.php b/Tests/CacheWarmer/HydratorCacheWarmerTest.php
index bc370728..77e05bdf 100644
--- a/Tests/CacheWarmer/HydratorCacheWarmerTest.php
+++ b/Tests/CacheWarmer/HydratorCacheWarmerTest.php
@@ -11,6 +11,7 @@
 use Symfony\Component\DependencyInjection\Container;
 use Symfony\Component\DependencyInjection\ContainerInterface;
 
+use function method_exists;
 use function sys_get_temp_dir;
 use function unlink;
 
@@ -66,12 +67,24 @@ public function testWarmerNotExecuted(int $autoGenerate): void
 
         try {
             $this->warmer->warmUp('meh');
-            $this->assertFileNotExists($hydratorFilename);
+            // Replace by "assertFileDoesNotExist" when PHPUnit 9 is minimum
+            $this->assertFileDoesNotExistWithBC($hydratorFilename);
         } finally {
             @unlink($hydratorFilename);
         }
     }
 
+    private function assertFileDoesNotExistWithBC(string $filename): void
+    {
+        if (! method_exists($this, 'assertFileDoesNotExist')) {
+            $this->assertFileNotExists($filename);
+
+            return;
+        }
+
+        $this->assertFileDoesNotExist($filename);
+    }
+
     /**
      * @return array<array{int}>
      */
diff --git a/Tests/DataCollector/CommandDataCollectorTest.php b/Tests/DataCollector/CommandDataCollectorTest.php
index a48895b5..2008c57f 100644
--- a/Tests/DataCollector/CommandDataCollectorTest.php
+++ b/Tests/DataCollector/CommandDataCollectorTest.php
@@ -12,9 +12,6 @@
 
 class CommandDataCollectorTest extends TestCase
 {
-    /**
-     * @doesNotPerformAssertions
-     */
     public function testCollector(): void
     {
         $collector = new CommandDataCollector(new CommandLogger());