diff --git a/tests/LanguageSwitcherInstallTest.php b/tests/LanguageSwitcherInstallTest.php
index 28c3726..fa4b3fa 100644
--- a/tests/LanguageSwitcherInstallTest.php
+++ b/tests/LanguageSwitcherInstallTest.php
@@ -10,5 +10,5 @@
 
     $this->assertFileExists(base_path('app/Http/Middleware/Localization.php'));
     $webfile = file_get_contents(base_path('routes/web.php'));
-    $this->assertStringContainsString("// Language Switcher Route 言語切替用ルートだよ", $webfile);
+    $this->assertStringContainsString('// Language Switcher Route 言語切替用ルートだよ', $webfile);
 });
diff --git a/tests/NoDebugCommandLeftTest.php b/tests/NoDebugCommandLeftTest.php
index d57f591..02e14ba 100644
--- a/tests/NoDebugCommandLeftTest.php
+++ b/tests/NoDebugCommandLeftTest.php
@@ -1,5 +1,5 @@
 <?php
 
 test('globals')
-    ->expect(['dd', 'dump','ray'])
+    ->expect(['dd', 'dump', 'ray'])
     ->not->toBeUsed();
diff --git a/tests/TestCase.php b/tests/TestCase.php
index e7e4b26..0ff1962 100644
--- a/tests/TestCase.php
+++ b/tests/TestCase.php
@@ -18,7 +18,7 @@ protected function setUp(): void
         }
 
         // テスト用のファイル作成(web.php)
-        if (!is_file(__DIR__.'/../vendor/orchestra/testbench-core/laravel/routes/web.php')) {
+        if (! is_file(__DIR__.'/../vendor/orchestra/testbench-core/laravel/routes/web.php')) {
             copy(__DIR__.'/web.php.stub', __DIR__.'/../vendor/orchestra/testbench-core/laravel/routes/web.php');
         }
 
@@ -28,7 +28,7 @@ protected function setUp(): void
         }
 
         // テスト用のファイル作成(Kernel.php)
-        if (!is_file(__DIR__.'/../vendor/orchestra/testbench-core/laravel/app/Http/Kernel.php')) {
+        if (! is_file(__DIR__.'/../vendor/orchestra/testbench-core/laravel/app/Http/Kernel.php')) {
             copy(__DIR__.'/Kernel.php.stub', __DIR__.'/../vendor/orchestra/testbench-core/laravel/app/Http/Kernel.php');
         }