fix: --dirty when no tests found

bin/pest

@@ -84,7 +84,7 @@ use Symfony\Component\Console\Output\OutputInterface;
 
     $kernel = Kernel::boot();
 
-    $result = $kernel->handle($args);
+    $result = $kernel->handle($output, $args);
 
     $kernel->shutdown();
 

src/Exceptions/NoTestsFound.php

@@ -0,0 +1,26 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Pest\Exceptions;
+
+use InvalidArgumentException;
+use NunoMaduro\Collision\Contracts\RenderlessEditor;
+use NunoMaduro\Collision\Contracts\RenderlessTrace;
+use Symfony\Component\Console\Exception\ExceptionInterface;
+
+/**
+ * @internal
+ */
+final class NoTestsFound extends InvalidArgumentException implements ExceptionInterface, RenderlessEditor, RenderlessTrace
+{
+    /**
+     * Creates a new Exception instance.
+     */
+    public function __construct()
+    {
+        parent::__construct('No tests found.');
+
+        // ...
+    }
+}

src/Kernel.php

@@ -5,12 +5,14 @@ declare(strict_types=1);
 namespace Pest;
 
 use Pest\Contracts\Bootstrapper;
+use Pest\Exceptions\NoTestsFound;
 use Pest\Plugins\Actions\CallsAddsOutput;
 use Pest\Plugins\Actions\CallsBoot;
 use Pest\Plugins\Actions\CallsShutdown;
 use Pest\Support\Container;
 use PHPUnit\TextUI\Application;
 use PHPUnit\TextUI\Exception;
+use Symfony\Component\Console\Output\OutputInterface;
 
 /**
  * @internal
@@ -69,11 +71,19 @@ final class Kernel
      *
      * @throws Exception
      */
-    public function handle(array $argv): int
+    public function handle(OutputInterface $output, array $argv): int
     {
         $argv = (new Plugins\Actions\CallsHandleArguments())->__invoke($argv);
 
-        $this->application->run($argv, false);
+        try {
+            $this->application->run($argv, false);
+        } catch (NoTestsFound) { // @phpstan-ignore-line
+            $output->writeln([
+                '',
+                '  <fg=white;options=bold;bg=blue> INFO </> No tests found.',
+                '',
+            ]);
+        }
 
         return (new CallsAddsOutput())->__invoke(
             Result::exitCode(),

src/TestCaseFilters/GitDirtyTestCaseFilter.php

@@ -6,22 +6,30 @@ namespace Pest\TestCaseFilters;
 
 use Pest\Contracts\TestCaseFilter;
 use Pest\Exceptions\MissingDependency;
+use Pest\Exceptions\NoTestsFound;
+use Pest\TestSuite;
 use Symfony\Component\Process\Process;
 
 final class GitDirtyTestCaseFilter implements TestCaseFilter
 {
     /**
-     * @var array<string>
+     * @var string[]|null
      */
-    private array $changedFiles = [];
+    private array|null $changedFiles = null;
 
     public function __construct(private readonly string $projectRoot)
     {
-        $this->loadDiff();
+        // ...
     }
 
     public function accept(string $testCaseFilename): bool
     {
+        if ($this->changedFiles === null) {
+            $this->loadChangedFiles();
+        }
+
+        assert(is_array($this->changedFiles));
+
         $relativePath = str_replace($this->projectRoot, '', $testCaseFilename);
 
         if (str_starts_with($relativePath, '/')) {
@@ -31,7 +39,7 @@ final class GitDirtyTestCaseFilter implements TestCaseFilter
         return in_array($relativePath, $this->changedFiles, true);
     }
 
-    private function loadDiff(): void
+    private function loadChangedFiles(): void
     {
         $process = new Process(['git', 'status', '--short', '--', '*.php']);
         $process->run();
@@ -53,6 +61,14 @@ final class GitDirtyTestCaseFilter implements TestCaseFilter
 
         $dirtyFiles = array_map(fn ($file, $status): string => in_array($status, ['R', 'RM'], true) ? explode(' -> ', $file)[1] : $file, array_keys($dirtyFiles), $dirtyFiles);
 
-        $this->changedFiles = $dirtyFiles = array_values($dirtyFiles);
+        $dirtyFiles = array_filter($dirtyFiles, fn ($file): bool => str_starts_with('.'.DIRECTORY_SEPARATOR.$file, TestSuite::getInstance()->testPath));
+
+        $dirtyFiles = array_values($dirtyFiles);
+
+        if ($dirtyFiles === []) {
+            throw new NoTestsFound();
+        }
+
+        $this->changedFiles = $dirtyFiles;
     }
 }