Fix #33630. Fix cannot set 0 as value for config through OCC command

apps/files_external/lib/Command/Config.php

@@ -72,7 +72,8 @@ protected function execute(InputInterface $input, OutputInterface $output) {
 		}
 
 		$value = $input->getArgument('value');
-		if ($value) {
+
+		if ($value !== null) {
 			$this->setOption($mount, $key, $value, $output);
 		} else {
 			$this->getOption($mount, $key, $output);

apps/files_external/tests/Command/ConfigCommandTest.php

@@ -0,0 +1,96 @@
+<?php
+
+/**
+ * @author Saugat Pachhai <[email protected]>
+ * @author Artur Neumann <[email protected]>
+ *
+ * @copyright Copyright (c) 2018, ownCloud GmbH
+ * @license AGPL-3.0
+ *
+ * This code is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License, version 3,
+ * as published by the Free Software Foundation.
+ *
+ * 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, version 3,
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+namespace OCA\Files_External\Tests\Command;
+
+use OCA\Files_External\Command\Config;
+use Symfony\Component\Console\Output\BufferedOutput;
+
+class ConfigCommandTest extends CommandTest {
+	private function getInstance($storageService) {
+		return new Config($storageService);
+	}
+
+	/**
+	 * @dataProvider optionsProvider
+	 *
+	 * @param mixed $value
+	 *
+	 * @return void
+	 */
+	public function testGetConfigValue($value) {
+		$mount = $this->getMount(1, '', '', [], ['filesystem_check_changes' => $value]);
+
+		$storageService = $this->getGlobalStorageService([$mount]);
+		$command = $this->getInstance($storageService);
+
+		$input = $this->getInput(
+			$command,
+			[
+			'mount_id' => 1,
+			'key' => 'filesystem_check_changes'
+			],
+			['output' => 'json']
+		);
+
+		$result = \trim($this->executeCommand($command, $input));
+		$this->assertEquals($value, $result);
+	}
+
+	/**
+	 * @dataProvider optionsProvider
+	 *
+	 * @param mixed $value
+	 *
+	 * @return void
+	 */
+	public function testSetConfigValue($value) {
+		$mount = $this->getMount(1, '', '');
+
+		$storageService = $this->getGlobalStorageService([$mount]);
+		$command = $this->getInstance($storageService);
+
+		$input = $this->getInput(
+			$command,
+			[
+			'mount_id' => 1,
+			'key' => 'filesystem_check_changes',
+			'value' => $value
+			],
+			[ 'output' => 'json']
+		);
+
+		$result = \trim($this->executeCommand($command, $input));
+		$this->assertEquals('', $result);
+
+		$output = new BufferedOutput();
+		$result = $this->invokePrivate($command, 'getOption', [$mount, 'filesystem_check_changes', $output]);
+		$this->assertEquals($value, \trim($output->fetch()));
+	}
+
+	public function optionsProvider() {
+		return [
+			[0], [1], ['true']
+		];
+	}
+}