Changes to make possible implement api endpoint

Update documentation
Start implementing getSystems route
Code to route getSystems
Controller to board import
Change return
Increase coverage

Signed-off-by: Vitor Mattos <vitor@php.rio>

tests/unit/controller/BoardImportApiControllerTest.php

@@ -0,0 +1,74 @@
+<?php
+/**
+ * @copyright Copyright (c) 2018 Ryan Fletcher <ryan.fletcher@codepassion.ca>
+ *
+ * @author Ryan Fletcher <ryan.fletcher@codepassion.ca>
+ *
+ * @license GNU AGPL version 3 or any later version
+ *
+ *  This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU Affero General Public License as
+ *  published by the Free Software Foundation, either version 3 of the
+ *  License, or (at your option) any later version.
+ *
+ *  This program 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 Affero General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Affero General Public License
+ *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+namespace OCA\Deck\Controller;
+
+use OCA\Deck\Db\Board;
+use OCP\AppFramework\Http;
+use OCP\AppFramework\Http\DataResponse;
+use OCP\IRequest;
+use OCA\Deck\Service\BoardImportService;
+
+class BoardImportApiControllerTest extends \Test\TestCase {
+	private $appName = 'deck';
+	private $userId = 'admin';
+	/** @var BoardImportApiController */
+	private $controller;
+	/** @var BoardImportService */
+	private $boardImportService;
+
+	public function setUp(): void {
+		parent::setUp();
+		$this->request = $this->createMock(IRequest::class);
+		$this->boardImportService = $this->createMock(BoardImportService::class);
+
+		$this->controller = new BoardImportApiController(
+			$this->appName,
+			$this->request,
+			$this->boardImportService,
+			$this->userId
+		);
+	}
+
+	public function testGetAllowedSystems() {
+		$this->boardImportService
+			->method('getAllowedImportSystems')
+			->willReturn(['trello']);
+		$actual = $this->controller->getAllowedSystems();
+		$expected = new DataResponse(['trello'], HTTP::STATUS_OK);
+		$this->assertEquals($expected, $actual);
+	}
+
+	public function testImport() {
+		$system = 'trello';
+		$config = [
+			'owner' => 'test'
+		];
+		$data = [
+			'name' => 'test'
+		];
+		$actual = $this->controller->import($system, $config, $data);
+		$board = $this->createMock(Board::class);
+		$this->assertInstanceOf(Board::class, $board);
+		$this->assertEquals(HTTP::STATUS_OK, $actual->getStatus());
+	}
+}