Big bunch of code to improve test coverage.

app/Http/Controllers/Category/IndexController.php

@@ -0,0 +1,89 @@
+<?php
+/**
+ * IndexController.php
+ * Copyright (c) 2019 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/>.
+ */
+
+namespace FireflyIII\Http\Controllers\Category;
+
+
+use FireflyIII\Http\Controllers\Controller;
+use FireflyIII\Models\Category;
+use FireflyIII\Repositories\Category\CategoryRepositoryInterface;
+use Illuminate\Http\Request;
+use Illuminate\Pagination\LengthAwarePaginator;
+use Illuminate\Support\Collection;
+
+/**
+ * Class IndexController
+ */
+class IndexController extends Controller
+{
+    /** @var CategoryRepositoryInterface The category repository */
+    private $repository;
+
+    /**
+     * CategoryController constructor.
+     * @codeCoverageIgnore
+     */
+    public function __construct()
+    {
+        parent::__construct();
+
+        $this->middleware(
+            function ($request, $next) {
+                app('view')->share('title', (string)trans('firefly.categories'));
+                app('view')->share('mainTitleIcon', 'fa-bar-chart');
+                $this->repository = app(CategoryRepositoryInterface::class);
+
+                return $next($request);
+            }
+        );
+    }
+
+
+
+    /**
+     * Show all categories.
+     *
+     * @param Request $request
+     *
+     * @return \Illuminate\Contracts\View\Factory|\Illuminate\View\View
+     */
+    public function index(Request $request)
+    {
+        $page       = 0 === (int)$request->get('page') ? 1 : (int)$request->get('page');
+        $pageSize   = (int)app('preferences')->get('listPageSize', 50)->data;
+        $collection = $this->repository->getCategories();
+        $total      = $collection->count();
+        $collection = $collection->slice(($page - 1) * $pageSize, $pageSize);
+
+        $collection->each(
+            function (Category $category) {
+                $category->lastActivity = $this->repository->lastUseDate($category, new Collection);
+            }
+        );
+
+        // paginate categories
+        $categories = new LengthAwarePaginator($collection, $total, $pageSize, $page);
+        $categories->setPath(route('categories.index'));
+
+        return view('categories.index', compact('categories'));
+    }
+
+}