class BookBuilderTest : StringSpec( {
        val book = Book(
            isbn = "1234"
        )
        "Canary test should pass" {
            true shouldBe true
        }
        "Instantiating Book should work" {
            book.isbn shouldBe  "1234"
        }
        "Updating a book with another book should work" {
            val builder = BookBuilder()
            builder.data.author should beEmpty()
            val update = Book(author = "Feynstein")
            builder.updateData(update)
            builder.data.author shouldBe "Feynstein"
        }
})