         XCTAssertEqual(entries[1].info.dosAttributes?.contains(.directory), false)
         XCTAssertEqual(entries[1].info.fileSystemType, .fat)
         XCTAssertFalse(entries[1].info.isTextFile)
+        XCTAssertNil(entries[0].info.ownerID)
+        XCTAssertNil(entries[0].info.groupID)
         XCTAssertEqual(entries[1].data, "Hello, Windows!".data(using: .utf8))
     }
 

        XCTAssertEqual(entries[0].info.fileSystemType, .unix)
        XCTAssertFalse(entries[0].info.isTextFile)
        XCTAssertEqual(entries[0].info.compressionMethod, .lzma)

        guard let answerData = Constants.data(forAnswer: "test4") else {
            XCTFail("Unable to get answer data.")

        XCTAssertEqual(entries[0].info.fileSystemType, .unix)
        XCTAssertFalse(entries[0].info.isTextFile)
        XCTAssertEqual(entries[0].info.compressionMethod, .bzip2)
        XCTAssertNil(entries[0].info.ownerID)
        XCTAssertNil(entries[0].info.groupID)

        guard let answerData = Constants.data(forAnswer: "test4") else {
            XCTFail("Unable to get answer data.")
