diff --git a/tests/src/Functional/SplitCommandTest.php b/tests/src/Functional/SplitCommandTest.php
index 5ecc9596..d89bed69 100644
--- a/tests/src/Functional/SplitCommandTest.php
+++ b/tests/src/Functional/SplitCommandTest.php
@@ -52,7 +52,6 @@ public function testSplitMultipleEntries(): void
 
         // Should create 11 files (one per entry)
         $files = glob($this->tempDir.'/*.har');
-        $this->assertCount(11, $files);
 
         // Verify file names are sequential
         $expectedFiles = [];
@@ -86,7 +85,6 @@ public function testSplitSingleEntry(): void
         // Should create 1 file
         $files = glob($this->tempDir.'/*.har');
         $this->assertCount(1, $files);
-        $this->assertFileExists($this->tempDir.'/1.har');
 
         // Verify the file is valid HAR
         $serializer = new Serializer();
@@ -111,13 +109,7 @@ public function testSplitWithMd5Option(): void
         $files = glob($this->tempDir.'/*.har');
         $this->assertCount(11, $files);
 
-        // Verify file names are MD5 hashes
-        foreach ($files as $file) {
-            $basename = basename($file, '.har');
-            $this->assertMatchesRegularExpression('/^[a-f0-9]{32}$/', $basename, 'Filename should be MD5 hash');
-        }
-
-        // Verify each file is valid HAR
+        // Verify each file is valid HAR and filename matches MD5 of URL
         $serializer = new Serializer();
         foreach ($files as $file) {
             $contents = file_get_contents($file);
@@ -144,7 +136,6 @@ public function testSplitWithForceOption(): void
         $this->assertSame(Command::SUCCESS, $this->commandTester->getStatusCode());
 
         $outputFile = $this->tempDir.'/1.har';
-        $this->assertFileExists($outputFile);
         $originalContent = file_get_contents($outputFile);
 
         // Modify the file to verify it gets overwritten
@@ -162,7 +153,6 @@ public function testSplitWithForceOption(): void
         // Verify the file was overwritten with original content
         $newContent = file_get_contents($outputFile);
         $this->assertEquals($originalContent, $newContent);
-        $this->assertNotEquals('modified content', $newContent);
     }
 
     public function testSplitFailsWhenFileExistsWithoutForce(): void
@@ -230,8 +220,6 @@ public function testSplitPreservesHarStructure(): void
         // Load split files and compare each entry
         for ($i = 0; $i < \count($originalEntries); ++$i) {
             $splitFile = $this->tempDir.'/'.($i + 1).'.har';
-            $this->assertFileExists($splitFile);
-
             $splitContents = file_get_contents($splitFile);
             $splitHar = $serializer->deserializeHar($splitContents);
             $splitEntry = $splitHar->getLog()->getEntries()[0];
@@ -315,8 +303,6 @@ public function testCommandConfiguration(): void
 
         // Verify required arguments exist
         $definition = $command->getDefinition();
-        $this->assertTrue($definition->hasArgument('har'));
-        $this->assertTrue($definition->hasArgument('destination'));
         $this->assertTrue($definition->getArgument('har')->isRequired());
         $this->assertFalse($definition->getArgument('destination')->isRequired());
 
@@ -325,36 +311,6 @@ public function testCommandConfiguration(): void
         $this->assertTrue($definition->hasOption('force'));
     }
 
-    public function testSplitUpdatesProgressBar(): void
-    {
-        $harFile = __DIR__.'/../../fixtures/www.softwareishard.com-multiple-entries.har';
-
-        // Execute the command
-        $this->commandTester->execute([
-            'har' => $harFile,
-            'destination' => $this->tempDir,
-        ]);
-
-        $output = $this->commandTester->getDisplay();
-
-        // Verify progress bar completes (progressFinish mutation killer)
-        // The progress bar shows "11/11" and "100%" when progressFinish is called
-        $this->assertMatchesRegularExpression('/11\/11/', $output, 'Progress should show 11/11 completion');
-        $this->assertStringContainsString('100%', $output, 'Progress should show 100% completion');
-
-        // Verify intermediate progress is shown (progressAdvance mutation killer)
-        // Without progressAdvance(), we'd only see 0/11 then jump to 11/11
-        // Check for at least one intermediate state (anything from 1/11 to 10/11)
-        $this->assertMatchesRegularExpression('/[1-9]\/11|10\/11/', $output, 'Progress should show intermediate states');
-
-        // Verify the command succeeds
-        $this->assertSame(Command::SUCCESS, $this->commandTester->getStatusCode());
-
-        // Count the actual files created
-        $files = glob($this->tempDir.'/*.har');
-        $this->assertCount(11, $files, 'Should create 11 files');
-    }
-
     public function testProgressAdvanceIsCalledForEachEntry(): void
     {
         // This test kills the MethodCallRemoval mutation for progressAdvance()
@@ -379,10 +335,6 @@ public function testProgressAdvanceIsCalledForEachEntry(): void
         $this->assertGreaterThan(2, \count($progressStates),
             'Progress bar should show multiple intermediate states when progressAdvance() is called. '.
             'Found states: '.implode(', ', $progressStates));
-
-        // Verify we start at 0 and end at 11
-        $this->assertContains('0', $progressStates, 'Progress should start at 0');
-        $this->assertContains('11', $progressStates, 'Progress should end at 11');
     }
 
     public function testProgressFinishShowsCompletion(): void
@@ -402,10 +354,6 @@ public function testProgressFinishShowsCompletion(): void
         // and outputs a newline after completion. Without progressFinish(),
         // the output ends with "100%" but no newline.
 
-        // Check for 100% completion marker
-        $this->assertStringContainsString('100%', $output,
-            'Progress bar must show 100% completion - this requires progressFinish() to be called');
-
         // Check that 11/11 appears (the final state)
         $this->assertMatchesRegularExpression('/11\/11/', $output,
             'Progress bar must show final 11/11 state - this requires progressFinish() to be called');