Wire up new error handling stack

tests/unit/Foundation/ErrorHandling/ExceptionHandler/ValidationExceptionHandlerTest.php

@@ -0,0 +1,47 @@
+<?php
+
+/*
+ * This file is part of Flarum.
+ *
+ * (c) Toby Zerner <toby.zerner@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Flarum\Tests\unit\Foundation\ErrorHandling\ExceptionHandler;
+
+use Flarum\Foundation\ErrorHandling\ExceptionHandler\ValidationExceptionHandler;
+use Flarum\Foundation\ValidationException;
+use PHPUnit\Framework\TestCase;
+
+class ValidationExceptionHandlerTest extends TestCase
+{
+    private $handler;
+
+    public function setUp()
+    {
+        $this->handler = new ValidationExceptionHandler;
+    }
+
+    public function test_managing_exceptions()
+    {
+        $error = $this->handler->handle(new ValidationException(
+            ['foo' => 'Attribute error'],
+            ['bar' => 'Relationship error']
+        ));
+
+        $this->assertEquals(422, $error->getStatusCode());
+        $this->assertEquals('validation_error', $error->getType());
+        $this->assertEquals([
+            [
+                'detail' => 'Attribute error',
+                'source' => ['pointer' => '/data/attributes/foo']
+            ],
+            [
+                'detail' => 'Relationship error',
+                'source' => ['pointer' => '/data/relationships/bar']
+            ]
+        ], $error->getDetails());
+    }
+}