[6.x] Add assertion method for 201 Created HTTP response

src/Illuminate/Foundation/Testing/TestResponse.php

@@ -89,6 +89,23 @@ public function assertOk()
         return $this;
     }
 
+    /**
+     * Assert that the response has a 201 status code.
+     *
+     * @return $this
+     */
+    public function assertCreated()
+    {
+        $actual = $this->getStatusCode();
+
+        PHPUnit::assertTrue(
+            201 === $actual,
+            'Response status code ['.$actual.'] does not match expected 201 status code.'
+        );
+
+        return $this;
+    }
+
     /**
      * Assert that the response has the given status code and no content.
      *

tests/Foundation/FoundationTestResponseTest.php

@@ -147,6 +147,22 @@ public function testAssertOk()
         $response->assertOk();
     }
 
+    public function testAssertCreated()
+    {
+        $statusCode = 500;
+
+        $this->expectException(AssertionFailedError::class);
+
+        $this->expectExceptionMessage('Response status code ['.$statusCode.'] does not match expected 201 status code.');
+
+        $baseResponse = tap(new Response, function ($response) use ($statusCode) {
+            $response->setStatusCode($statusCode);
+        });
+
+        $response = TestResponse::fromBaseResponse($baseResponse);
+        $response->assertCreated();
+    }
+
     public function testAssertNotFound()
     {
         $statusCode = 500;