Improve test coverate to PdfParser

lib/Command/Configure/Cfssl.php

@@ -108,7 +108,7 @@ protected function execute(InputInterface $input, OutputInterface $output): int
 			$configPath = $this->getFullPath() . DIRECTORY_SEPARATOR . 'cfssl_config' . DIRECTORY_SEPARATOR;
 			$cfsslUri = 'http://127.0.0.1:8888/api/v1/cfssl/';
 		} else {
-			$output->writeln('CFSSL binary not found!');
+			$output->writeln('<info>CFSSL binary not found! run libresign:istall --cfssl first.</info>');
 			if (!$configPath = $input->getOption('config-path')) {
 				throw new InvalidArgumentException('Invalid config path');
 			}

lib/Service/PdfParserService.php

@@ -4,6 +4,7 @@
 
 use OC\SystemConfig;
 use OCA\Libresign\AppInfo\Application;
+use OCA\Libresign\Exception\LibresignException;
 use OCP\IConfig;
 
 class PdfParserService {
@@ -31,10 +32,18 @@ private function getDataDir(): string {
 		return $this->systemConfig->getValue('datadirectory', \OC::$SERVERROOT . '/data/');
 	}
 
+	/**
+	 * @param string $filePath
+	 * @return array
+	 * @throws LibresignException
+	 */
 	public function getMetadata(string $filePath): array {
 		$fullPath = $this->getDataDir() . $filePath;
 		$json = shell_exec($this->cliPath . ' info ' . $fullPath);
 		$array = json_decode($json, true);
+		if (!is_array($array)) {
+			throw new LibresignException('Impossible get metadata from this file. Check if you installed correctly the libresign-cli.');
+		}
 		$output = [
 			'p' => count($array['pages']),
 		];

tests/Unit/Service/PdfParseServiceTest.php

@@ -0,0 +1,90 @@
+<?php
+
+namespace OCA\Libresign\Tests\Unit\Service;
+
+use OC\SystemConfig;
+use OCA\Libresign\Exception\LibresignException;
+use OCA\Libresign\Service\InstallService;
+use OCA\Libresign\Service\PdfParserService;
+use OCP\IConfig;
+use PHPUnit\Framework\MockObject\MockObject;
+
+/**
+ * @internal
+ */
+final class PdfParseServiceTest extends \OCA\Libresign\Tests\Unit\TestCase {
+	/** @var IConfig|MockObject */
+	private $config;
+	/** @var SystemConfig|MockObject */
+	private $systemConfig;
+	/** @var InstallService|MockObject */
+	private $installService;
+
+	public function setUp(): void {
+		$this->config = $this->createMock(IConfig::class);
+		$this->systemConfig = $this->createMock(SystemConfig::class);
+		$this->installService = $this->createMock(InstallService::class);
+	}
+
+	private function getService(): PdfParserService {
+		return new PdfParserService(
+			$this->config,
+			$this->systemConfig,
+			$this->installService
+		);
+	}
+
+	public function testGetMetadataWithFail(): void {
+		$this->expectException(LibresignException::class);
+		$this->config
+			->method('getAppValue')
+			->willReturnCallback(function ($appid, $key, $default) {
+				switch ($key) {
+					case 'libresign_cli_path': return '/fake_path/';
+				}
+			});
+		$this->systemConfig
+			->method('getValue')
+			->willReturnCallback(function ($key, $default) {
+				switch ($key) {
+					case 'datadirectory': return $default;
+				}
+			});
+		$path = '/fake';
+		$this->getService()->getMetadata($path);
+	}
+
+	/**
+	 * @dataProvider providerGetMetadataWIthSuccess
+	 */
+	public function testGetMetadataWIthSuccess(string $path, array $expected): void {
+		$this->installService = \OC::$server->get(InstallService::class);
+		$this->systemConfig = \OC::$server->get(SystemConfig::class);
+		$this->config = \OC::$server->get(IConfig::class);
+		$actual = $this->getService()->getMetadata($path);
+		$this->assertEquals($expected, $actual);
+	}
+
+	public function providerGetMetadataWIthSuccess(): array {
+		return [
+			[
+				'/../apps/libresign/tests/fixtures/small_valid.pdf',
+				[
+					'p' => 1,
+					'd' => [
+						['w' => 595.276, 'h' => 841.89],
+					],
+				]
+			],
+			[
+				'/../apps/libresign/tests/fixtures/small_valid-signed.pdf',
+				[
+					'p' => 1,
+					'd' => [
+						['w' => 595.276, 'h' => 841.89],
+					],
+				]
+			],
+		];
+	}
+}