Added validation handler tests

tests/Flarum/Api/Handler/ValidationExceptionHandlerTest.php

@@ -0,0 +1,30 @@
+<?php
+namespace Tests\Flarum\Api\Handler;
+
+use Flarum\Api\Handler\ValidationExceptionHandler;
+use Flarum\Core\Exception\ValidationException;
+use Tests\Test\TestCase;
+
+class ValidationExceptionHandlerTest extends TestCase
+{
+    private $handler;
+
+    public function init()
+    {
+        $this->handler = new ValidationExceptionHandler;
+    }
+
+    public function test_it_handles_recognisable_exceptions()
+    {
+        $this->assertFalse($this->handler->manages(new \Exception));
+        $this->assertTrue($this->handler->manages(new ValidationException([])));
+    }
+
+    public function test_managing_exceptions()
+    {
+        $response = $this->handler->handle(new ValidationException(['There was an error']));
+
+        $this->assertEquals(422, $response->getStatus());
+        $this->assertEquals([['source' => ['pointer' => '/data/attributes/0'], 'detail' => 'There was an error']], $response->getErrors());
+    }
+}