Improve transformer coverage.

tests/Unit/Transformers/RuleGroupTransformerTest.php

@@ -0,0 +1,54 @@
+<?php
+/**
+ * RuleGroupTransformerTest.php
+ * Copyright (c) 2018 thegrumpydictator@gmail.com
+ *
+ * This file is part of Firefly III.
+ *
+ * Firefly III is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Firefly III is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Firefly III. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+declare(strict_types=1);
+
+namespace Tests\Unit\Transformers;
+
+
+use FireflyIII\Models\RuleGroup;
+use FireflyIII\Transformers\RuleGroupTransformer;
+use Symfony\Component\HttpFoundation\ParameterBag;
+use Tests\TestCase;
+
+/**
+ * Class RuleGroupTransformerTest
+ */
+class RuleGroupTransformerTest extends TestCase
+{
+    /**
+     * Test basic tag transformer
+     *
+     * @covers \FireflyIII\Transformers\RuleGroupTransformer
+     */
+    public function testBasic(): void
+    {
+        /** @var RuleGroup $ruleGroup */
+        $ruleGroup = RuleGroup::first();
+
+
+        $transformer = app(RuleGroupTransformer::class);
+        $transformer->setParameters(new ParameterBag);
+        $result = $transformer->transform($ruleGroup);
+        $this->assertEquals($ruleGroup->title, $result['title']);
+    }
+
+}