diff --git a/tests/Commands/GeneratorCommandTest.php b/tests/Commands/GeneratorCommandTest.php
index d6310f9..4c71938 100644
--- a/tests/Commands/GeneratorCommandTest.php
+++ b/tests/Commands/GeneratorCommandTest.php
@@ -34,4 +34,28 @@ public function it_cannot_generate_class_file_given_reserved_name()
             ->expectsOutputToContain('The name "__halt_compiler" is reserved by PHP.')
             ->assertFailed();
     }
+
+    /** @test */
+    public function it_cannot_generate_class_file_when_file_already_exist()
+    {
+        file_put_contents(base_path('app/Value/Foo.php'), '<?php '.PHP_EOL);
+
+        $this->artisan('make:code', ['name' => 'Value/Foo'])
+            ->expectsOutputToContain('class [app/Value/Foo.php] already exists!')
+            ->assertFailed();
+    }
+
+    /** @test */
+    public function it_can_generate_class_file_when_file_already_exist_using_force_option()
+    {
+        file_put_contents(base_path('app/Value/Foo.php'), '<?php '.PHP_EOL);
+
+        $this->artisan('make:code', ['name' => 'Value/Foo', '--force' => true])
+            ->assertSuccessful();
+
+        $this->assertFileContains([
+            'namespace App\Value;',
+            'class Foo',
+        ], 'app/Value/Foo.php');
+    }
 }
diff --git a/tests/PresetManagerTest.php b/tests/PresetManagerTest.php
index 9104f9b..13074fb 100644
--- a/tests/PresetManagerTest.php
+++ b/tests/PresetManagerTest.php
@@ -2,6 +2,7 @@
 
 namespace Orchestra\Canvas\Core\Tests;
 
+use Illuminate\Support\Manager;
 use Orchestra\Canvas\Core\PresetManager;
 use Orchestra\Testbench\TestCase;
 
@@ -12,6 +13,7 @@ public function it_can_be_resolved()
     {
         $manager = $this->app[PresetManager::class];
 
+        $this->assertInstanceOf(Manager::class, $manager);
         $this->assertSame('laravel', $manager->getDefaultDriver());
     }
 
diff --git a/workbench/app/Console/CodeGeneratorCommand.php b/workbench/app/Console/CodeGeneratorCommand.php
index 41c444e..762bdd6 100644
--- a/workbench/app/Console/CodeGeneratorCommand.php
+++ b/workbench/app/Console/CodeGeneratorCommand.php
@@ -3,7 +3,7 @@
 namespace Workbench\App\Console;
 
 use Orchestra\Canvas\Core\Commands\GeneratorCommand;
-use Orchestra\Canvas\Core\Concerns\ResolvesPresetStubs;
+use Symfony\Component\Console\Input\InputOption;
 
 class CodeGeneratorCommand extends GeneratorCommand
 {
@@ -37,4 +37,16 @@ protected function getStub()
     {
         return __DIR__.'/stubs/class.stub';
     }
+
+    /**
+     * Get the console command arguments.
+     *
+     * @return array
+     */
+    protected function getOptions()
+    {
+        return [
+            ['force', 'f', InputOption::VALUE_NONE, 'Create the class even if the cast already exists'],
+        ];
+    }
 }