assert

Loop through array, each element a JUnit test

这一生的挚爱 提交于 2019-12-05 13:51:16
问题 I have a JUnit 4 test that loops through an array of test data: public @Test void testAll() { final Object[][] sets = new Object[][] { // SET TYPE VALUE // --- valid sets // groups x(s(A,1, B,1, C,1), G), x(s(A,4, B,4, D,4), G), x(s(A,8, B,8, D,8, C,8), G), x(s(J,J, B,4, D,4), G, 4*3), x(s(A,9, J,J, D,9), G, 9*3), x(s(A,2, B,2, C,2), G), x(s(A,4, B,4, J,J), G, 4*3), x(s(A,4, B,4, C,4, D,4), G), // runs x(s(A,1, A,2, A,3), R), x(s(B,8, B,9, B,10), R), x(s(J,J, C,2, C,3), R, 6), x(s(D,8, D,9, J

Lab3:虚拟内存管理

吃可爱长大的小学妹 提交于 2019-12-05 07:29:30
前言 虚拟内存是计算机系统内存管理的一种技术。它使得应用程序认为它拥有连续的可用的内存(一个连续完整的地址空间),而实际上,它通常是被分隔成多个物理内存碎片,还有部分暂时存储在外部磁盘存储器上,在需要时进行数据交换。 覆盖和技术 覆盖 依据程序逻辑结构,将程序划分为若干功能相对独立的模块;将不会同时执行的模块共享同一块内存区域 但是由于需要程序员来划分功能模块和确定模块之间的覆盖关系,所以增加了编程难度,并且也增加了执行时间 交换 交换技术和覆盖技术讨论的不一样的是,交换技术讨论的是当前内存足够当前的单个程序运行的内存,但是对于多道程序可能会有运行内存不够的情况 实现方法可以将暂时不能运行的程序放到外存当中,再运行时来执行换入换出操作 虚拟内存 在装载程序时,只将当前指令执行需要的部分页面或段装入内存,指令执行中需要的指令或数据不在内存(称为缺页)时,处理器通知操作系统将相应的页面调入内存,操作系统将内存中暂时不同的页面保存到外存 虚拟内存在页机制的基础上,也就是增加了请求调页和页面置换 当用户程序要装载到内存运行时,只装入部分页面,就启动程序运行 进程在运行中发现有需要的代码或数据不在内存时,则向系统发出缺页异常请求 操作系统在处理缺页异常时,将外存中相应的页面调入内存,使得进程能继续运行 页表项结构 驻留位:表示该页是否在内存 修改位:表示在内存中的该页是否被修改过 访问位

Enable assert in a maven built project

送分小仙女□ 提交于 2019-12-05 07:27:31
I have a java program that is built using Maven and I need to enable the assert keyword. Ideally, I'd want to enable assertions in the maven build command. Jigar Joshi Maven compiles and builds the java code. Assertion errors come when you are actually running java code so with maven you can't do it this way unless you are using maven plugin to launch java code, you would have to supply -ea to jvm exec:java Pass -ea to commandline argument Surefire if you meant for test execution then configure sure-fire plugin to pass -ea to jvm <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId

Mechanze form submission causes 'Assertion Error' in response when .read() is attempted

一笑奈何 提交于 2019-12-05 07:01:09
问题 I am writing a web-crawl program with python and am unable to login using mechanize. The form on the site looks like: <form method="post" action="PATLogon"> <h2 align="center"><img src="/myaladin/images/aladin_logo_rd.gif"></h2> <!-- ALADIN Request parameters --> <input type=hidden name=req value="db"> <input type=hidden name=key value="PROXYAUTH"> <input type=hidden name=url value="http://eebo.chadwyck.com/search"> <input type=hidden name=lib value="8"> <table> <tr><td><b>Last Name:</b></td>

如何简单实现接口自动化测试(基于 python)

微笑、不失礼 提交于 2019-12-05 06:24:30
GitChat 作者:饿了么技术社区 原文: 如何简单实现接口自动化测试(基于 python) 关注微信公众号:GitChat 技术杂谈 ,这里一本正经的讲技术 一、简介 本文从一个简单的登录接口测试入手,一步步调整优化接口调用姿势,然后简单讨论了一下接口测试框架的要点,最后介绍了一下我们目前正在使用的接口测试框架 pithy 。期望读者可以通过本文对接口自动化测试有一个大致的了解。 二、引言 为什么要做接口自动化测试? 在当前互联网产品迭代频繁的背景下,回归测试的时间越来越少,很难在每个迭代都对所有功能做完整回归。但接口自动化测试因其实现简单、维护成本低,容易提高覆盖率等特点,越来越受重视。 为什么要自己写框架呢? 使用requets + unittest很容易实现接口自动化测试,而且requests的api已经非常人性化,非常简单,但通过封装以后(特别是针对公司内特定接口),再加上对一些常用工具的封装,可以进一步提高业务脚本编写效率。 三、环境准备 确保本机已安装python2.7以上版本,然后安装如下库: pip install flask pip install requests 后面我们会使用flask写一个用来测试的接口,使用requests去测试。 四、测试接口准备 下面使用flask实现两个http接口,一个登录,另外一个查询详情,但需要登录后才可以

How do I insert a precondition in a java class method or constructor?

陌路散爱 提交于 2019-12-05 05:57:26
This is for a java class I'm taking. The book mentions preconditions and postconditions but doesn't give any examples how to code them. It goes on to talk about asserts, I have that down, but the assignment I'm doing specifically states to insert preconditions and test the preconditions with asserts. Any help would be great. Languages like Eiffel support "preconditions" and "postconditions" as a basic part of the language. One can make a compelling argument that the whole purpose of an "object constructor" is precisely to establish "the class invariant". But with Java (as with just about every

How to detect in runtime if some Compiler Option (like Assertions) was set to ON?

我是研究僧i 提交于 2019-12-05 05:43:32
What is the conditional to check if assertions are active in Delphi? I would like to be able to do something to suppress hints about unused variables when assertions are not active in code like procedure Whatever; var v : Integer; begin v := DoSomething; Assert(v >= 0); end; In the above code, when assertions are not active, there is a hint about variable v being assigned a value that is never used. The code is in a library which is going to be used in various environments, so I'd be able to test for assertions specifically, and not a custom conditional like DEBUG. You can do this using the

On Asserts and Exceptions; Java

余生长醉 提交于 2019-12-05 05:21:39
问题 In this specific scenarios, are asserts more appropriate then exceptions? It is my understanding that assert should be used when program is FUBAR to a degree where it can not recover and will exit. I also was told to always throw exceptions for clarity and error message handling. Is there a fine line between when to use each? Is there an example where assert must be used in place of exception unconditionally? public void subscribe(DataConsumer c) throws IllegalArgumentException { if (c ==

How do you test the params hash in a Rails test?

笑着哭i 提交于 2019-12-05 05:13:11
The following generates an error: "undefined local variable or method `params'" assert_equal params[:recipient_id], users(:one).id How do you test the params hash? Also, how do you test assert_redirect when there are params present? The params are appended to the URL, so testing for model_path or similar fails. Working with built in test class in Rails 3. Jim Deville http://guides.rubyonrails.org/testing.html#functional-tests-for-your-controllers gives some of this information. In this case, params is attached to the @request or @response object (depending on what HTTP method you are testing),

python + pytest基本使用方法(断言)

本小妞迷上赌 提交于 2019-12-05 03:17:17
#pytest 的基本用法# 安装: pip install pytest#在当前目录下运行 : 输入 pytest# 1.断言#功能:用于计算a与b相加的和def add(a,b): return a + b#功能:用于判断素数def is_prime(n): if n < 1: return False for i in range(2,n): if n % i == 0: return False return True#测试相等def test_add_1(): assert add(3,4) == 7#测试不相等def test_add_2(): assert add(17,22) != 50#测试大于或者等于def test_add_3(): assert add(17,22) <= 50#测试小于或者等于def test_add_4(): assert add(17,22) >= 38#测试包含def test_in(): a = 'Hello' b = 'he' assert b in a#测试不包含def test_not_in(): a = 'Hello' b = 'hi' assert b not in a#判断是否为Truedef test_true_1(): assert is_prime(13)#判断是否为Truedef test_true_2():