Update tests

tests/Unit/TransactionRules/Actions/AppendDescriptionTest.php

@@ -0,0 +1,43 @@
+<?php
+/**
+ * AppendDescriptionTest.php
+ * Copyright (c) 2017 thegrumpydictator@gmail.com
+ * This software may be modified and distributed under the terms of the
+ * Creative Commons Attribution-ShareAlike 4.0 International License.
+ *
+ * See the LICENSE file for details.
+ */
+
+declare(strict_types=1);
+
+namespace Tests\Unit\TransactionRules\Actions;
+
+
+use FireflyIII\Models\RuleAction;
+use FireflyIII\Models\TransactionJournal;
+use FireflyIII\TransactionRules\Actions\AppendDescription;
+use Tests\TestCase;
+
+class AppendDescriptionTest extends TestCase
+{
+    /**
+     * @covers \FireflyIII\TransactionRules\Actions\AppendDescription::__construct
+     * @covers \FireflyIII\TransactionRules\Actions\AppendDescription::act()
+     */
+    public function testActExistingTag()
+    {
+        $ruleAction               = new RuleAction;
+        $ruleAction->action_value = 'APPEND';
+
+        $journal        = TransactionJournal::find(1);
+        $oldDescription = $journal->description;
+        $action         = new AppendDescription($ruleAction);
+        $result         = $action->act($journal);
+        $this->assertTrue($result);
+
+        $journal = TransactionJournal::find(1);
+        $this->assertEquals($oldDescription . 'APPEND', $journal->description);
+
+    }
+
+}