java - 如何通过 jUnit 使用内部扫描仪测试方法？

Question

这是我的测试方法:

 @Test
public void Should_Print_All_Groups_With_Less_Or_Equals_Student_Count() throws ClassNotFoundException, IOException, SQLException {

    SchoolDao schoolDao = new SchoolDaoImplementation();
    Class.forName("org.postgresql.Driver");

    assertEquals(schoolDao.findAllGroupsWithLessOrEqualsStudentCount("testDb.properties"), "check");

}
}

这是我想测试的方法:

 @Override
public HashMap<String, Integer> findAllGroupsWithLessOrEqualsStudentCount(String pathToDatabaseProperties) {

    ConnectionFactory connectionFactory = new ConnectionFactory();

    Scanner scanner = new Scanner(System.in);
    System.out.println("Please, enter minimum number of students in groups : ");
    int numberOfStudents = scanner.nextInt();
    System.out.println(main.drawGroupNamesAndNumberOfStudents(main.replaceGroupNumberToGroupName(main.countNumberOfStudentsInGroups(numberOfStudents, pathToDatabaseProperties), connectionFactory.connectToDatabase(pathToDatabaseProperties))));
    return main.replaceGroupNumberToGroupName(main.countNumberOfStudentsInGroups(numberOfStudents, pathToDatabaseProperties), connectionFactory.connectToDatabase(pathToDatabaseProperties));
}

但我不知道如何使用内部扫描仪测试方法？

因为现在我运行测试并且程序正在加载并且什么也不做。

所以也许 smb 可以帮助并正确编写测试。提前致谢!

Answer 1

理想情况下，您应该将用户输入保留为单独的方法。双向都有帮助；

它将减少将来的冗余代码，并且您可以模拟该输入法。