1 files changed, 158 insertions, 0 deletions
diff --git a/tests/unit/Thumb/EpubthumbTest.php b/tests/unit/Thumb/EpubthumbTest.php
new file mode 100644
index 000000000..d381d940e
--- /dev/null
+++ b/tests/unit/Thumb/EpubthumbTest.php
@@ -0,0 +1,158 @@
+<?php
+/*
+ * SPDX-FileCopyrightText: 2024 Hubzilla Community
+ * SPDX-FileContributor: Harald Eilertsen
+ *
+ * SPDX-License-Identifier: MIT
+ */
+
+namespace Zotlabs\Tests\Unit\Thumbs;
+
+use PHPUnit\Framework\Attributes\{AfterClass, Before, BeforeClass};
+use Zotlabs\Thumbs\Epubthumb;
+use Zotlabs\Tests\Unit\UnitTestCase;
+
+use ZipArchive;
+
+class EpubthumbTest extends UnitTestCase {
+	private const TMPDIR = __DIR__ . '/tmp';
+
+	private Epubthumb	$thumbnailer;
+
+	/**
+	 * Create a temp dir to use for the tests in this class.
+	 */
+	#[BeforeClass]
+	static function setupTmpDir(): void {
+		if (!is_dir(self::TMPDIR)) {
+			mkdir(self::TMPDIR);
+		}
+	}
+
+	/**
+	 * Clean up and remove the temp dir after the tests.
+	 */
+	#[AfterClass]
+	static function cleanupTmpDir(): void {
+		$files = scandir(self::TMPDIR);
+		if ($files !== false) {
+			foreach($files as $f) {
+				if ($f[0] !== '.') {
+					unlink(self::TMPDIR . '/' . $f);
+				}
+			}
+		}
+		rmdir(self::TMPDIR);
+	}
+
+	/**
+	 * Create the thumbnailer object for tests.
+	 *
+	 * This is run before each test, so that each test has it's own
+	 * instance of the thumbnailer.
+	 */
+	#[Before]
+	function createThumbnailer(): void {
+		$this->thumbnailer = new Epubthumb();
+	}
+
+	/*
+	 * Tests
+	 */
+
+	public function testEpubThumbMatch(): void {
+		$this->assertTrue($this->thumbnailer->Match('application/epub+zip'));
+		$this->assertFalse($this->thumbnailer->Match('application/zip'));
+	}
+
+	public function testNoThumbnailCreatedForFileThatDontExist(): void {
+		$this->checkCreateThumbnail(self::TMPDIR . '/nonexisting.epub', false);
+	}
+
+	public function testNoThumbnailCreatedIfNotAZipArchive(): void {
+		$filename = self::TMPDIR . '/notazip.epub';
+
+		file_put_contents($filename, 'This is not a ZIP file!');
+
+		$this->checkCreateThumbnail($filename, false);
+	}
+
+	public function testNoThumbnailCreatedIfInvalidEpub(): void {
+		$filename = self::TMPDIR . '/nocontainer.epub';
+
+		$epub = new ZipArchive();
+		$epub->open($filename, ZipArchive::CREATE);
+		$epub->addFromString('somefile.txt', 'It was a dark an stormy night...');
+		$epub->close();
+
+		$this->checkCreateThumbnail($filename, false);
+	}
+
+	public function testNoThumbnailCreatedIfCoverFileMissing(): void {
+		$filename = self::TMPDIR . '/good.epub';
+
+		$epub = new ZipArchive();
+		$epub->open($filename, ZipArchive::CREATE);
+		$this->addEpubContainer($epub);
+		$this->addEpubPackage($epub);
+		$epub->close();
+
+		$this->checkCreateThumbnail($filename, false);
+	}
+
+	public function testCreateCoverFromEpub(): void {
+		$filename = self::TMPDIR . '/good.epub';
+
+		$epub = new ZipArchive();
+		$epub->open($filename, ZipArchive::CREATE);
+		$this->addEpubContainer($epub);
+		$this->addEpubPackage($epub);
+		$epub->addFile(PROJECT_BASE . '/images/red-koala.png', 'EPUB/cover.png');
+		$epub->close();
+
+		$this->checkCreateThumbnail($filename, true);
+	}
+
+	/*
+	 * Helper functions
+	 */
+
+	private function checkCreateThumbnail(string $filename, bool $expectThumbnail): void {
+		$attach = [ 'content' => $filename ];
+		$this->thumbnailer->Thumb($attach, 0);
+
+		$this->assertEquals($expectThumbnail, file_exists($filename . '.thumb'));
+	}
+
+	private function addEpubContainer(ZipArchive $epub): void {
+		$xml = <<<XML
+			<?xml version="1.0" encoding="UTF-8"?>
+			<container version="1.0" xmlns="urn:oasis:names:tc:opendocument:xmlns:container">
+			  <rootfiles>
+				<rootfile full-path="EPUB/package.opf" media-type="application/oebps-package+xml"/>
+			  </rootfiles>
+			</container>
+			XML;
+
+		$epub->addEmptyDir('META-INF');
+		$epub->addFromString('META-INF/container.xml', $xml);
+	}
+
+	private function addEpubPackage(ZipArchive $epub): void {
+		$xml = <<<XML
+			<?xml version="1.0" encoding="UTF-8"?>
+			<package xmlns="http://www.idpf.org/2007/opf" version="3.0" unique-identifier="pub-identifier">
+				<manifest>
+					<item
+						properties="cover-image"
+						id="ci"
+						href="cover.png"
+						media-type="image/png" />
+				</manifest>
+			</package>
+			XML;
+
+		$epub->addEmptyDir('EPUB');
+		$epub->addFromString('EPUB/package.opf', $xml);
+	}
+}