isConfigured()) { $this->markTestSkipped('ISBNDB_API_KEY is not configured.'); } $book = $service->searchBook('The Hobbit J. R. R. Tolkien'); $this->assertNotNull($book, 'ISBNdb search should return a known book.'); $this->assertNotSame('', $book['title']); $this->assertArrayHasKey('author', $book); $this->assertArrayHasKey('isbn', $book); } public function test_find_by_isbn_with_live_isbndb_api(): void { $service = new IsbnDbService; if (! $service->isConfigured()) { $this->markTestSkipped('ISBNDB_API_KEY is not configured.'); } $book = $service->findByIsbn('9780140328721'); $this->assertNotNull($book, 'ISBNdb ISBN lookup should return a known book.'); $this->assertNotSame('', $book['title']); $this->assertSame('9780140328721', $book['isbn']); } }