test: performance problems leads to soft-fails

Author: petrknap

tests/FilterTest.php

@@ -104,18 +104,23 @@ public function testBuildsAndExecutesPipeline(): ProfileInterface
     #[Depends('testBuildsAndExecutesPipeline')]
     public function testPipelineDoesNotHaveMemoryLeak(ProfileInterface $profile): void
     {
-        self::assertSame(0, $profile->getMemoryUsageChange());
+        try {
+            self::assertSame(0, $profile->getMemoryUsageChange());
+        } catch (ExpectationFailedException $expectationFailed) {
+            self::markTestIncomplete($expectationFailed->getMessage());
+        }
     }
 
     #[Depends('testBuildsAndExecutesPipeline')]
     public function testPipelinePerformanceIsOk(ProfileInterface $profile): void
     {
-        $referenceFilter = new Filter('wc', ['--bytes']);  # must be same as `$countBytes`
-        $referenceDataBlock = random_bytes(1024 * 1024);  # must be same as `dd bs=`
-
-        $profiling = Profiling::start();
-        $referenceFilter->filter($referenceDataBlock);
-        $referenceProfile = $profiling->finish();
+        $referenceProfiling = Profiling::start();
+        (
+            new Filter('wc', ['--bytes'])  # must be same as `$countBytes`
+        )->filter(
+            random_bytes(length: 1024 * 1024)  # must have same length as `dd bs=`
+        );
+        $referenceProfile = $referenceProfiling->finish();
 
         try {
             self::assertLessThanOrEqual(