Refactor and rename test code.

app/Support/Import/JobConfiguration/File/ConfigurationInterface.php

@@ -0,0 +1,53 @@
+<?php
+/**
+ * ConfigurationInterface.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 FireflyIII\Support\Import\JobConfiguration\File;
+
+use FireflyIII\Models\ImportJob;
+use Illuminate\Support\MessageBag;
+
+/**
+ * Class ConfigurationInterface.
+ */
+interface ConfigurationInterface
+{
+    /**
+     * Store data associated with current stage.
+     *
+     * @param array $data
+     *
+     * @return MessageBag
+     */
+    public function configureJob(array $data): MessageBag;
+
+    /**
+     * Get the data necessary to show the configuration screen.
+     *
+     * @return array
+     */
+    public function getNextData(): array;
+
+    /**
+     * @param ImportJob $importJob
+     */
+    public function setImportJob(ImportJob $importJob): void;
+}