tasty-kat: 用Haskell强化KAT测试

需积分: 9 0 下载量 194 浏览量 更新于2024-11-20 收藏 9KB ZIP 举报
资源摘要信息:"tasty-kat是一个Haskell库,支持已知答案测试(Known Answer Tests,简称KAT)。KAT测试提供了一种方式来测试函数或程序的特定功能,通过给定输入和预期输出来验证程序的正确性。KAT文件以结构化的方式组织测试案例,这些测试案例可以被用来验证程序在处理特定数据集时的行为是否符合预期。以加法为例,KAT文件会列出两个数字(a和b),并定义预期的结果(r),以此来验证加法函数的正确性。tasty-kat将这些测试用例加载到测试向量中,并在之上运行特定的函数以确保其结果与预期一致。tasty-kat的使用涉及加载KAT文件,定义测试用例,然后执行这些测试以验证函数的正确性。此外,tasty-kat库与Haskell编程语言紧密集成,可以利用Haskell强大的类型系统和函数式编程特性来设计和实现复杂的测试场景。在Haskell社区中,tasty-kat作为一个流行的测试框架,广泛应用于开发高质量、可验证的软件。tasty-kat的源代码文件通常命名为tasty-kat-master,表明这是一个主版本的源代码包。" 知识点包括: 1. 已知答案测试(KAT): KAT是一种软件测试方法,通过提供已知的输入和预期的输出来验证程序或函数的正确性。在Haskell中,KAT通常用于测试算法或函数的正确执行。 2. KAT文件格式: KAT文件包含了一系列的测试案例,每个案例定义了一组输入值和一个预期的输出值。通过比较实际输出与预期输出,可以验证函数的正确性。 3. Haskell编程语言: Haskell是一种纯函数式编程语言,广泛用于研究和专业软件开发。Haskell具备强大的类型系统和自动内存管理机制,适合于形式化验证和测试。 4. Tasty测试框架: Tasty是Haskell中一个流行的测试库,它允许多种不同类型的测试(如单元测试、性能测试、KAT等)在一个统一的测试套件中运行。Tasty支持测试的组合、选择和并行执行,提供了一种灵活和全面的测试解决方案。 5. Tasty.KAT模块: 这是Tasty库中的一个模块,专门用于支持KAT测试。它允许开发者加载KAT文件,并将实际的测试输出与文件中定义的预期输出进行比较。 6. taty-kat的使用方法: 首先需要加载KAT文件,然后定义测试案例,通过tasty-kat运行这些测试案例并比较结果。这个过程通常涉及到Haskell的IO操作和测试库的使用。 7. 软件测试与验证: 在软件开发中,测试和验证是保证软件质量的重要环节。通过KAT测试,可以确保软件的特定功能按照预期正确执行。 8. 源代码文件命名规则: 提供的文件名“tasty-kat-master”表示这是一个包含最新开发进度的源代码包。这种命名规则有助于跟踪软件的版本和更新情况。 9. 源代码管理: 对于开源项目而言,通常会使用版本控制系统(如git)进行源代码的管理。tasty-kat-master作为项目源代码的一部分,可能会托管在像GitHub这样的代码托管平台上。 10. 社区支持和采用: 在Haskell社区中,tasty-kat作为一个经过实践检验的库,可能会得到社区的广泛支持和使用。它符合社区对于可靠和高效测试框架的需求。

1444. Elephpotamus Time limit: 0.5 second Memory limit: 64 MB Harry Potter is taking an examination in Care for Magical Creatures. His task is to feed a dwarf elephpotamus. Harry remembers that elephpotamuses are very straightforward and imperturbable. In fact, they are so straightforward that always move along a straight line and they are so imperturbable that only move when attracted by something really tasty. In addition, if an elephpotamus stumbles into a chain of its own footprints, it falls into a stupor and refuses to go anywhere. According to Hagrid, elephpotamuses usually get back home moving along their footprints. This is why they never cross them, otherwise they may get lost. When an elephpotamus sees its footprints, it tries to remember in detail all its movements since leaving home (this is also the reason why they move along straight lines only, this way it is easier to memorize). Basing on this information, the animal calculates in which direction its burrow is situated, then turns and goes straight to it. It takes some (rather large) time for an elephpotamus to perform these calculations. And what some ignoramuses recognize as a stupor is in fact a demonstration of outstanding calculating abilities of this wonderful, though a bit slow-witted creature. Elephpotamuses' favorite dainty is elephant pumpkins, and some of such pumpkins grow on the lawn where Harry is to take his exam. At the start of the exam, Hagrid will drag the elephpotamus to one of the pumpkins. Having fed the animal with a pumpkin, Harry can direct it to any of the remaining pumpkins. In order to pass the exam, Harry must lead the elephpotamus so that it eats as many pumpkins as possible before it comes across its footprints. Input The first input line contains the number of pumpkins on the lawn N (3 ≤ N ≤ 30000). The pumpkins are numbered from 1 to N, the number one being assigned to the pumpkin to which the animal is brought at the start of the trial. In the next N lines, the coordinates of the pumpkins are given in the order corresponding to their numbers. All the coordinates are integers in the range from −1000 to 1000. It is guaranteed that there are no two pumpkins at the same location and there is no straight line passing through all the pumpkins. Output In the first line write the maximal number K of pumpkins that can be fed to the elephpotamus. In the next K lines, output the order in which the animal will eat them, giving one number in a line. The first number in this sequence must always be 1.写一段Java完成此目的

2023-06-03 上传