Convert deprecated string interpolation

Author: jasonmccreary

src/Generators/PestTestGenerator.php

@@ -538,12 +538,12 @@ private function buildFormRequestName(Controller $controller, string $name)
 
     private function buildFormRequestTestCase(string $controller, string $action, string $form_request)
     {
-        return <<< END
-test('${action} uses form request validation')
+        return <<<END
+test('{$action} uses form request validation')
     ->assertActionUsesFormRequest(
-        \\${controller}::class,
-        '${action}',
-        \\${form_request}::class
+        \\{$controller}::class,
+        '{$action}',
+        \\{$form_request}::class
     );
 END;
     }

src/Generators/PhpUnitTestGenerator.php

@@ -9,7 +9,6 @@
 use Blueprint\Contracts\Model as BlueprintModel;
 use Blueprint\Models\Column;
 use Blueprint\Models\Controller;
-use Blueprint\Models\Model;
 use Blueprint\Models\Statements\DispatchStatement;
 use Blueprint\Models\Statements\EloquentStatement;
 use Blueprint\Models\Statements\FireStatement;
@@ -531,14 +530,14 @@ private function buildFormRequestName(Controller $controller, string $name)
 
     private function buildFormRequestTestCase(string $controller, string $action, string $form_request)
     {
-        return <<< END
+        return <<<END
     #[Test]
-    public function ${action}_uses_form_request_validation(): void
+    public function {$action}_uses_form_request_validation(): void
     {
         \$this->assertActionUsesFormRequest(
-            \\${controller}::class,
-            '${action}',
-            \\${form_request}::class
+            \\{$controller}::class,
+            '{$action}',
+            \\{$form_request}::class
         );
     }
 END;

src/Models/Controller.php

@@ -96,7 +96,7 @@ public function addMethod(string $name, array $statements)
         $this->methods[$name] = $statements;
     }
 
-    public function policy(?Policy $policy = null): ?Policy
+    public function policy(Policy $policy = null): ?Policy
     {
         if ($policy) {
             $this->policy = $policy;