2 个类，1 个 Java 中的 Junit 测试错误。 错误信息

Question

I am new to Java, and I a new computer science student. I am required to create a JUnit test for Book and Person Class. I know there is an obvious mistake in my code, mind if you point it out? I keep getting an error message no matter what I try.

Answer 1

On price test you have to set a delta to compare float variables assertEquals(100,JavaBook.getPrice(),1)

Author test isn't correct. You have yo check assertEquals("John",JavaBook.getAuthor().getFirstName())

Answer 2

EDIT: Java tried to convert object Person into a String, however your class doesn't override toString() method, so it was called from Object class instead. That's why you had this value - Person@22a71081. You can override method toString() so it returns firstName + " " + lastName inside Person class. It should work then.