Implement test of import command.

app/Services/Internal/File/EncryptService.php

@@ -0,0 +1,52 @@
+<?php
+/**
+ * EncryptService.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\Services\Internal\File;
+
+use FireflyIII\Exceptions\FireflyException;
+
+/**
+ * Class EncryptService
+ */
+class EncryptService
+{
+    /**
+     * @param string $file
+     * @param string $key
+     *
+     * @throws FireflyException
+     */
+    public function encrypt(string $file, string $key): void
+    {
+        if (!file_exists($file)) {
+            throw new FireflyException(sprintf('File "%s" does not seem to exist.', $file));
+        }
+        $content = file_get_contents($file);
+        $content = Crypt::encrypt($content);
+        $newName = sprintf('%s.upload', $key);
+        $path    = storage_path('upload') . '/' . $newName;
+
+        file_put_contents($path, $content);
+    }
+
+}