diff --git a/composer.json b/composer.json
index 9fb1e7aa..746a3f38 100644
--- a/composer.json
+++ b/composer.json
@@ -19,7 +19,7 @@
         "guzzlehttp/psr7": "^2.0",
         "deviantintegral/jms-serializer-uri-handler": "^1.1",
         "deviantintegral/null-date-time": "^1.0",
-        "symfony/console": "^5.0||^6.0"
+        "symfony/console": "^7||^8"
     },
     "require-dev": {
         "friendsofphp/php-cs-fixer": "3.92.0",
diff --git a/phpunit.xml.dist b/phpunit.xml.dist
index 4b22c2ea..825cae9a 100644
--- a/phpunit.xml.dist
+++ b/phpunit.xml.dist
@@ -1,18 +1,13 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" backupGlobals="false" bootstrap="vendor/autoload.php" colors="true" processIsolation="false" stopOnFailure="false" xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/12.5/phpunit.xsd" cacheDirectory=".phpunit.cache" backupStaticProperties="false">
-  <coverage>
-    <report>
-      <clover outputFile="build/logs/clover.xml"/>
-    </report>
-  </coverage>
+<phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" backupGlobals="false" bootstrap="vendor/autoload.php" colors="true" processIsolation="false" stopOnFailure="false" xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/12.5/phpunit.xsd" cacheDirectory=".phpunit.cache" backupStaticProperties="false" failOnWarning="false">
   <testsuites>
     <testsuite name="Unit">
       <directory suffix="Test.php">./tests/src/Unit</directory>
     </testsuite>
+    <testsuite name="Functional">
+      <directory suffix="Test.php">./tests/src/Functional</directory>
+    </testsuite>
   </testsuites>
-  <logging>
-    <junit outputFile="build/logs/results.xml"/>
-  </logging>
   <source>
     <include>
       <directory suffix=".php">./src</directory>
diff --git a/src/Command/SplitCommand.php b/src/Command/SplitCommand.php
index be274ac7..17d1f7b0 100644
--- a/src/Command/SplitCommand.php
+++ b/src/Command/SplitCommand.php
@@ -17,7 +17,7 @@
  */
 class SplitCommand extends Command
 {
-    protected function configure()
+    protected function configure(): void
     {
         parent::configure();
         $this->setName('har:split')
@@ -29,7 +29,7 @@ protected function configure()
           ->addOption('force', 'f', InputOption::VALUE_NONE, 'Overwrite destination files that already exist.');
     }
 
-    protected function execute(InputInterface $input, OutputInterface $output)
+    protected function execute(InputInterface $input, OutputInterface $output): int
     {
         $io = new SymfonyStyle($input, $output);
         $source = $input->getArgument('har');
@@ -60,6 +60,8 @@ protected function execute(InputInterface $input, OutputInterface $output)
             $io->progressAdvance();
         }
         $io->progressFinish();
+
+        return Command::SUCCESS;
     }
 
     private function getSplitDestination(
diff --git a/tests/src/Functional/SplitCommandTest.php b/tests/src/Functional/SplitCommandTest.php
new file mode 100644
index 00000000..ee64ea3b
--- /dev/null
+++ b/tests/src/Functional/SplitCommandTest.php
@@ -0,0 +1,264 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Deviantintegral\Har\Tests\Functional;
+
+use Deviantintegral\Har\Command\SplitCommand;
+use Deviantintegral\Har\Serializer;
+use Deviantintegral\Har\Tests\Unit\HarTestBase;
+use Symfony\Component\Console\Command\Command;
+use Symfony\Component\Console\Tester\CommandTester;
+
+class SplitCommandTest extends HarTestBase
+{
+    private string $tempDir;
+    private CommandTester $commandTester;
+
+    protected function setUp(): void
+    {
+        parent::setUp();
+
+        // Create a temporary directory for test outputs
+        $this->tempDir = sys_get_temp_dir().'/har_test_'.uniqid();
+        mkdir($this->tempDir, recursive: true);
+
+        // Set up the command tester
+        $command = new SplitCommand();
+        $this->commandTester = new CommandTester($command);
+    }
+
+    protected function tearDown(): void
+    {
+        // Clean up temporary directory
+        if (is_dir($this->tempDir)) {
+            $this->recursiveRemoveDirectory($this->tempDir);
+        }
+
+        parent::tearDown();
+    }
+
+    public function testSplitMultipleEntries(): void
+    {
+        $harFile = __DIR__.'/../../fixtures/www.softwareishard.com-multiple-entries.har';
+
+        $this->commandTester->execute([
+            'har' => $harFile,
+            'destination' => $this->tempDir,
+        ]);
+
+        // Should succeed
+        $this->assertSame(Command::SUCCESS, $this->commandTester->getStatusCode());
+
+        // Should create 11 files (one per entry)
+        $files = glob($this->tempDir.'/*.har');
+        $this->assertCount(11, $files);
+
+        // Verify file names are sequential
+        $expectedFiles = [];
+        for ($i = 1; $i <= 11; ++$i) {
+            $expectedFiles[] = $this->tempDir.'/'.$i.'.har';
+        }
+        natsort($files);
+        $files = array_values($files); // Re-index array after sorting
+        $this->assertEquals($expectedFiles, $files);
+
+        // Verify each file is valid HAR with single entry
+        $serializer = new Serializer();
+        foreach ($files as $file) {
+            $contents = file_get_contents($file);
+            $har = $serializer->deserializeHar($contents);
+            $this->assertCount(1, $har->getLog()->getEntries(), 'Each split file should have exactly one entry');
+        }
+    }
+
+    public function testSplitSingleEntry(): void
+    {
+        $harFile = __DIR__.'/../../fixtures/www.softwareishard.com-single-entry.har';
+
+        $this->commandTester->execute([
+            'har' => $harFile,
+            'destination' => $this->tempDir,
+        ]);
+
+        $this->assertSame(Command::SUCCESS, $this->commandTester->getStatusCode());
+
+        // 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();
+        $contents = file_get_contents($this->tempDir.'/1.har');
+        $har = $serializer->deserializeHar($contents);
+        $this->assertCount(1, $har->getLog()->getEntries());
+    }
+
+    public function testSplitWithMd5Option(): void
+    {
+        $harFile = __DIR__.'/../../fixtures/www.softwareishard.com-multiple-entries.har';
+
+        $this->commandTester->execute([
+            'har' => $harFile,
+            'destination' => $this->tempDir,
+            '--md5' => true,
+        ]);
+
+        $this->assertSame(Command::SUCCESS, $this->commandTester->getStatusCode());
+
+        // Should create 11 files
+        $files = glob($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
+        $serializer = new Serializer();
+        foreach ($files as $file) {
+            $contents = file_get_contents($file);
+            $har = $serializer->deserializeHar($contents);
+            $this->assertCount(1, $har->getLog()->getEntries());
+
+            // Verify the filename matches the MD5 of the request URL
+            $url = (string) $har->getLog()->getEntries()[0]->getRequest()->getUrl();
+            $expectedHash = md5($url);
+            $basename = basename($file, '.har');
+            $this->assertEquals($expectedHash, $basename);
+        }
+    }
+
+    public function testSplitWithForceOption(): void
+    {
+        $harFile = __DIR__.'/../../fixtures/www.softwareishard.com-single-entry.har';
+
+        // First split
+        $this->commandTester->execute([
+            'har' => $harFile,
+            'destination' => $this->tempDir,
+        ]);
+        $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
+        file_put_contents($outputFile, 'modified content');
+        $this->assertEquals('modified content', file_get_contents($outputFile));
+
+        // Split again with --force
+        $this->commandTester->execute([
+            'har' => $harFile,
+            'destination' => $this->tempDir,
+            '--force' => true,
+        ]);
+        $this->assertSame(Command::SUCCESS, $this->commandTester->getStatusCode());
+
+        // 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
+    {
+        $harFile = __DIR__.'/../../fixtures/www.softwareishard.com-single-entry.har';
+
+        // First split
+        $this->commandTester->execute([
+            'har' => $harFile,
+            'destination' => $this->tempDir,
+        ]);
+        $this->assertSame(Command::SUCCESS, $this->commandTester->getStatusCode());
+
+        // Try to split again without --force
+        $this->expectException(\RuntimeException::class);
+        $this->expectExceptionMessageMatches('/exists\. Use --force to overwrite/');
+
+        $this->commandTester->execute([
+            'har' => $harFile,
+            'destination' => $this->tempDir,
+        ]);
+    }
+
+    public function testSplitToCurrentDirectoryByDefault(): void
+    {
+        $harFile = __DIR__.'/../../fixtures/www.softwareishard.com-single-entry.har';
+
+        // Save current directory
+        $originalDir = getcwd();
+
+        try {
+            // Change to temp directory
+            chdir($this->tempDir);
+
+            // Execute without destination argument
+            $this->commandTester->execute([
+                'har' => $harFile,
+            ]);
+
+            $this->assertSame(Command::SUCCESS, $this->commandTester->getStatusCode());
+
+            // File should be created in current directory (tempDir)
+            $this->assertFileExists($this->tempDir.'/1.har');
+        } finally {
+            // Restore original directory
+            chdir($originalDir);
+        }
+    }
+
+    public function testSplitPreservesHarStructure(): void
+    {
+        $harFile = __DIR__.'/../../fixtures/www.softwareishard.com-multiple-entries.har';
+
+        // Load original HAR
+        $serializer = new Serializer();
+        $originalContents = file_get_contents($harFile);
+        $originalHar = $serializer->deserializeHar($originalContents);
+        $originalEntries = $originalHar->getLog()->getEntries();
+
+        $this->commandTester->execute([
+            'har' => $harFile,
+            'destination' => $this->tempDir,
+        ]);
+
+        // Load split files and compare each entry
+        for ($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];
+
+            // Compare request URLs to verify correct entry
+            $this->assertEquals(
+                (string) $originalEntries[$i]->getRequest()->getUrl(),
+                (string) $splitEntry->getRequest()->getUrl()
+            );
+        }
+    }
+
+    private function recursiveRemoveDirectory(string $directory): void
+    {
+        if (!is_dir($directory)) {
+            return;
+        }
+
+        $items = array_diff(scandir($directory), ['.', '..']);
+        foreach ($items as $item) {
+            $path = $directory.'/'.$item;
+            if (is_dir($path)) {
+                $this->recursiveRemoveDirectory($path);
+            } else {
+                unlink($path);
+            }
+        }
+        rmdir($directory);
+    }
+}