Code style fixes

Signed-off-by: Jelle Deneweth <jelle.deneweth@gmail.com>

Author: pottink

spec/Exception/ApiProblemExceptionSpec.php

@@ -4,6 +4,7 @@
 
 namespace spec\Phpro\ApiProblem\Exception;
 
+use Exception;
 use Phpro\ApiProblem\ApiProblemInterface;
 use Phpro\ApiProblem\Exception\ApiProblemException;
 use PhpSpec\ObjectBehavior;
@@ -23,7 +24,7 @@ public function it_is_initializable(): void
 
     public function it_is_an_excpetion(): void
     {
-        $this->shouldHaveType(\Exception::class);
+        $this->shouldHaveType(Exception::class);
     }
 
     public function it_contains_an_api_problem(ApiProblemInterface $apiProblem): void

spec/Http/ExceptionApiProblemSpec.php

@@ -5,6 +5,7 @@
 namespace spec\Phpro\ApiProblem\Http;
 
 use Exception;
+use InvalidArgumentException;
 use Phpro\ApiProblem\DebuggableApiProblemInterface;
 use Phpro\ApiProblem\Http\ExceptionApiProblem;
 use Phpro\ApiProblem\Http\HttpApiProblem;
@@ -148,7 +149,7 @@ public function it_should_deal_with_string_exception_codes(): void
     public function it_should_use_code_as_status_code_when_valid_http_status_code_error(): void
     {
         $message = 'an honest error';
-        $this->beConstructedWith(new \InvalidArgumentException($message, 400));
+        $this->beConstructedWith(new InvalidArgumentException($message, 400));
 
         $this->toArray()->shouldBe([
             'status' => 400,

src/Exception/ApiProblemException.php

@@ -4,9 +4,10 @@
 
 namespace Phpro\ApiProblem\Exception;
 
+use Exception;
 use Phpro\ApiProblem\ApiProblemInterface;
 
-class ApiProblemException extends \Exception
+class ApiProblemException extends Exception
 {
     /**
      * @var ApiProblemInterface

src/Http/ExceptionApiProblem.php

@@ -4,6 +4,7 @@
 
 namespace Phpro\ApiProblem\Http;
 
+use function get_class;
 use Phpro\ApiProblem\DebuggableApiProblemInterface;
 use Throwable;
 
@@ -23,7 +24,7 @@ public function __construct(Throwable $exception)
             : 500;
 
         parent::__construct($statusCode, [
-            'detail' => $exception->getMessage() ?: \get_class($exception),
+            'detail' => $exception->getMessage() ?: get_class($exception),
         ]);
     }
 
@@ -51,7 +52,7 @@ public function toDebuggableArray(): array
     private function serializeException(Throwable $throwable): array
     {
         return [
-            'type' => \get_class($throwable),
+            'type' => get_class($throwable),
             'message' => $throwable->getMessage(),
             'code' => $throwable->getCode(),
             'line' => $throwable->getLine(),