Check solution file exists in run command

src/Command/RunCommand.php

@@ -4,10 +4,12 @@
 
 namespace PhpSchool\PhpWorkshop\Command;
 
+use PhpSchool\PhpWorkshop\Check\FileExistsCheck;
 use PhpSchool\PhpWorkshop\ExerciseDispatcher;
 use PhpSchool\PhpWorkshop\ExerciseRepository;
 use PhpSchool\PhpWorkshop\Input\Input;
 use PhpSchool\PhpWorkshop\Output\OutputInterface;
+use PhpSchool\PhpWorkshop\Result\Success;
 use PhpSchool\PhpWorkshop\UserState;
 
 /**
@@ -60,6 +62,11 @@ public function __construct(
      */
     public function __invoke(Input $input): void
     {
+        if (!file_exists($input->getRequiredArgument('program'))) {
+            $this->output->printError(sprintf('File: "%s" does not exist', $input->getRequiredArgument('program')));
+            return;
+        }
+
         $exercise = $this->exerciseRepository->findByName($this->userState->getCurrentExercise());
         $this->exerciseDispatcher->run($exercise, $input, $this->output);
     }

test/Command/RunCommandTest.php

@@ -3,6 +3,8 @@
 namespace PhpSchool\PhpWorkshopTest\Command;
 
 use Colors\Color;
+use PhpSchool\PhpWorkshop\Exercise\TemporaryDirectoryTrait;
+use PhpSchool\PhpWorkshopTest\BaseTest;
 use PhpSchool\Terminal\Terminal;
 use PhpSchool\PhpWorkshop\Command\RunCommand;
 use PhpSchool\PhpWorkshop\ExerciseDispatcher;
@@ -13,11 +15,11 @@
 use PhpSchool\PhpWorkshopTest\Asset\CliExerciseImpl;
 use PHPUnit\Framework\TestCase;
 
-class RunCommandTest extends TestCase
+class RunCommandTest extends BaseTest
 {
     public function test(): void
     {
-        $input = new Input('appName', ['program' => 'solution.php']);
+        $input = new Input('appName', ['program' => $this->getTemporaryFile('solution.php')]);
 
         $exercise = new CliExerciseImpl();
         $repo = new ExerciseRepository([$exercise]);
@@ -37,4 +39,28 @@ public function test(): void
         $command = new RunCommand($repo, $dispatcher, $state, $output);
         $command->__invoke($input);
     }
+
+    public function testWithNonExistingFile(): void
+    {
+        $input = new Input('appName', ['program' => 'solution.php']);
+
+        $exercise = new CliExerciseImpl();
+        $repo = new ExerciseRepository([$exercise]);
+
+        $state = new UserState();
+        $state->setCurrentExercise('my-exercise');
+        $color = new Color();
+        $color->setForceStyle(true);
+        $output = new StdOutput($color, $this->createMock(Terminal::class));
+
+        $dispatcher = $this->createMock(ExerciseDispatcher::class);
+        $dispatcher
+            ->expects($this->never())
+            ->method('run');
+
+        $this->expectOutputString(file_get_contents(__DIR__ . '/../res/app-run-missing-solution-expected.txt'));
+
+        $command = new RunCommand($repo, $dispatcher, $state, $output);
+        $command->__invoke($input);
+    }
 }

test/res/app-run-missing-solution-expected.txt

@@ -0,0 +1,5 @@
+
+                                      
+  File: "solution.php" does not exist 
+                                      
+