Test factory function.kt

Test factory function.kt

   @TestFactory
    fun `successful call to listBooks`(): List<DynamicTest> =
            listOf(
                ListBooksTestCase(
                    "Getting list of items",
                    testLibrary.identifier,
                    itemsList(book1.toItem(), book2.toItem()),
                    booksList(book1, book2)
                ),
                ListBooksTestCase(
                    "Getting empty list",
                    testLibrary.identifier,
                    itemsList(),
                    booksList()
                )
            ).map {
                it.`successful call to listBooks`()
            }