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  • Do you test your SQL/HQL/Criteria ?

    - by 0101
    Do you test your SQL or SQL generated by your database framework? There are frameworks like DbUnit that allow you to create real in-memory database and execute real SQL. But its very hard to use(not developer-friendly so to speak), because you need to first prepare test data(and it should not be shared between tests). P.S. I don't mean mocking database or framework's database methods, but tests that make you 99% sure that your SQL is working even after some hardcore refactoring.

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  • WORK PLANS in 10 Minutes

    Most productive people use some form of a work plan to sort out what they need to do and to guide them when they are doing the work. People generally agree that they need a work plan for new work, b... [Author: Dr Neil Miller - Computers and Internet - August 24, 2009]

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  • JUnit Testing in Multithread Application

    - by e2bady
    This is a problem me and my team faces in almost all of the projects. Testing certain parts of the application with JUnit is not easy and you need to start early and to stick to it, but that's not the question I'm asking. The actual problem is that with n-Threads, locking, possible exceptions within the threads and shared objects the task of testing is not as simple as testing the class, but testing them under endless possible situations within threading. To be more precise, let me tell you about the design of one of our applications: When a user makes a request several threads are started that each analyse a part of the data to complete the analysis, these threads run a certain time depending on the size of the chunk of data (which are endless and of uncertain quality) to analyse, or they may fail if the data was insufficient/lacking quality. After each completed its analysis they call upon a handler which decides after each thread terminates if the collected analysis-data is sufficient to deliver an answer to the request. All of these analysers share certain parts of the applications (some parts because the instances are very big and only a certain number can be loaded into memory and those instances are reusable, some parts because they have a standing connection, where connecting takes time, ex.gr. sql connections) so locking is very common (done with reentrant-locks). While the applications runs very efficient and fast, it's not very easy to test it under real-world conditions. What we do right now is test each class and it's predefined conditions, but there are no automated tests for interlocking and synchronization, which in my opionion is not very good for quality insurances. Given this example how would you handle testing the threading, interlocking and synchronization?

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  • Games at Work Part 1: Introduction to Gamification and Applications

    - by ultan o'broin
    Games Are Everywhere How many of you (will admit to) remember playing Pong? OK then, do you play Angry Birds on your phone during work hours? Thought about why we keep playing online, video, and mobile games and what this "gamification" business we're hearing about means for the enterprise applications user experience? In Reality Is Broken: Why Games Make Us Better and How They Can Change the World, Jane McGonigal says that playing computer and online games now provides more rewards for people than their real lives do. Games offer intrinsic rewards and happiness to the players as they pursue more satisfying work and the success, social connection, and meaning that goes with it. Yep, Gran Turismo, Dungeons & Dragons, Guitar Hero, Mario Kart, Wii Boxing, and the rest are all forms of work it seems. Games are, in fact, work taken so seriously that governments now move to limit the impact of virtual gaming currencies on the real financial system. Anyone who spends hours harvesting crops on FarmVille realizes it’s hard work too. Yet games evoke a positive emotion in players who voluntarily stay engaged with games for hours, day after day. Some 183 million active gamers in the United States play on average 13 hours per week. Weekly, 5 million of those gamers play for longer than a working week (45 hours). So why not harness the work put into games to solve real-world problems? Or, in the case of our applications users, real-world work problems? What’s a Game? Jane explains that all games have four defining traits: a goal, rules, a feedback system, and voluntary participation. We need to look at what motivational ideas behind the dynamics of the game—what we call gamification—are appropriate for our users. Typically, these motivators are achievement, altruism, competition, reward, self-expression, and status). Common game techniques for leveraging these motivations include: Badging and avatars Points and awards Leader boards Progress charts Virtual currencies or goods Gifting and giving Challenges and quests Some technology commentators argue for a game layer on top of everything, but this layer is already part of our daily lives in many instances. We see gamification working around us already: the badging and kudos offered on My Oracle Support or other Oracle community forums, becoming a Dragon Slayer implementor of Atlassian applications, being made duke of your favorite coffee shop on Yelp, sharing your workout details with Nike+, or donating to Japanese earthquake relief through FarmVille, for example. And what does all this mean for the applications that you use in your work? Read on in part two...

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  • What is considered third party code?

    - by Songo
    Inspired by this question Using third-party libraries - always use a wrapper? I wanted to know what people actually consider as third-party libraries. Example from PHP: If I'm building an application using Zend framework, should I treat Zend framework libraries as third party code? Example from C#: If I'm building a desktop application, should I treat all .Net classes as third party code? Example from Java: Should I treat all libraries in the JDK as third party libraries? Some people say that if a library is stable and won't change often then one doesn't need to wrap it. However I fail to see how one would test a class that depends on a third party code without wrapping it.

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  • How to unit test with lots of IO

    - by Eric
    I write Linux embedded software which closely integrates with hardware. My modules are such as : -CMOS video input with kernel driver (v4l2) -Hardware h264/mpeg4 encoders (texas instuments) -Audio Capture/Playback (alsa) -Network IO I'd like to have automated testing for those functionalities, such as integration testing. I am not sure how I can automate this process since most of the top level functionalities I face are IO bound. Sure, it is easy to test functions individually, but whole process checking means depending on tons of external dependencies only available at runtime.

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  • Your experiences with TDD [closed]

    - by SkonJeet
    In your experience, does TDD prove to be a useful approach in all development projects? Do you take the approach of TDD even when working on an existing project? Also, how does mocking tie in with a TDD discipline? I'm not looking for opinions, I'm looking for developers' advice, tips and learning resources regarding TDD's usage based on their experience. I'm going to spend the day equipping myself with enough knowledge about TDD to start making small steps towards using it but I don't know to what extent I should be using it.

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  • Holiday Stress

    - by andyleonard
    Photo by Brian J. Matis Ever have one of these days? I have. According to studies like this one , I am not alone. This is a time of year when vacations loom right alongside project deadlines. There are parties to attend, additional expenses and work around the house, decisions about what to do for whom, and more. If you celebrate by decorating a house, tree, or lawn with lights; you may find yourself fighting them like the young lady pictured here! Stress at work, stress at home – stress everywhere!...(read more)

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  • How to test the tests?

    - by Ryszard Szopa
    We test our code to make it more correct (actually, less likely to be incorrect). However, the tests are also code -- they can also contain errors. And if your tests are buggy, they hardly make your code better. I can think of three possible types of errors in tests: Logical errors, when the programmer misunderstood the task at hand, and the tests do what he thought they should do, which is wrong; Errors in the underlying testing framework (eg. a leaky mocking abstraction); Bugs in the tests: the test is doing slightly different than what the programmer thinks it is. Type (1) errors seem to be impossible to prevent (unless the programmer just... gets smarter). However, (2) and (3) may be tractable. How do you deal with these types of errors? Do you have any special strategies to avoid them? For example, do you write some special "empty" tests, that only check the test author's presuppositions? Also, how do you approach debugging a broken test case?

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  • What companies do what I'm interested in?

    - by Alex
    I'm a systems guy. People change their concentrations to avoid taking operating systems, while I took it during my first semester after transferring. I'm taking compilers and networks now, and I think they're awesome. And yet there are so many job postings looking for people to do work in things like web development, and so few postings looking for people to work in kernel hacking or network engineering. What sorts of companies do these things? I'm currently awaiting a contract in the mail for an internship with VMWare, so I'm not out of a job for the summer. Still, I'd like to companies do these things.

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  • How can I test database access methods in Java?

    - by javaStudent
    I want to write a test for a method that accesses a database such as following. public class MyClass{ public String getAddress(Int id){ String query = "Select * from Address where id="+id; //some additional statements resultSet = statement.executeQuery(); return result.getString(ADDRESS); } } How can I test this method? I am using Java.

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  • How important is to sacrifice your free time for accomplishing goals? [closed]

    - by Darf Zon
    I was reading a book about XP programming and about agile teams. While I was reading, I saw this scenario. I've never worked with a development team (just in school). So I would like what do you opine on this situation: Your boss has asked you to deliver software in a time that can only be possible to meet the project team asking if you want to work overtime without pay. All team members have young children. Discuss whether it should accept this request from your boss or should persuade the team to give their time to the organization rather than their families. What could be significant factors in the decision? As a programmer, you are offered an upgrade as project manager, but his feeling is that you can have a more effective contribution in a technical role in one administrative. Write when you should accept that promotion. Somethimes, I sacrifice my free time for accomplishing hits at work, so it's very important to me to know your opinion base of your experience.

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  • Area of testing

    - by ?????? ??????????
    I'm trying to understand which part of my code I should to test. I have some code. Below is example of this code, just to understand the idea. Depends of some parametrs I put one or another currency to "Event" and return his serialization in the controller. Which part of code I should to test? Just the final serialization, or only "Event" or every method: getJson, getRows, fillCurrency, setCurrency? class Controller { public function getJson() { $rows = $eventManager->getRows(); return new JsonResponse($rows); } } class EventManager { public function getRows() { //some code here if ($parameter == true) { $this->fillCurrency($event, $currency); } } public function fillCurrency($event, $currency) { //some code here if ($parameters == true) { $event->setCurrency($currency); } } } class Event { public function setCurrency($currency) { $this->updatedAt = new Datetime(); $this->currency = $currency; } }

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  • CI tests to enforce specific development rules - good practice?

    - by KeithS
    The following is all purely hypothetical and any particular portion of it may or may not accurately describe real persons or situations, whether living, dead or just pretending. Let's say I'm a senior dev or architect in charge of a dev team working on a project. This project includes a security library for user authentication/authorization of the application under development. The library must be available for developers to edit; however, I wish to "trust but verify" that coders are not doing things that could compromise the security of the finished system, and because this isn't my only responsibility I want it to be done in an automated way. As one example, let's say I have an interface that represents a user which has been authenticated by the system's security library. The interface exposes basic user info and a list of things the user is authorized to do (so that the client app doesn't have to keep asking the server "can I do this?"), all in an immutable fashion of course. There is only one implementation of this interface in production code, and for the purposes of this post we can say that all appropriate measures have been taken to ensure that this implementation can only be used by the one part of our code that needs to be able to create concretions of the interface. The coders have been instructed that this interface and its implementation are sacrosanct and any changes must go through me. However, those are just words; the security library's source is open for editing by necessity. Any of my devs could decide that this secured, private, hash-checked implementation needs to be public so that they could do X, or alternately they could create their own implementation of this public interface in a different library, exposing the hashing algorithm that provides the secure checksum, in order to do Y. I may not be made aware of these changes so that I can beat the developer over the head for it. An attacker could then find these little nuggets in an unobfuscated library of the compiled product, and exploit it to provide fake users and/or falsely-elevated administrative permissions, bypassing the entire security system. This possibility keeps me awake for a couple of nights, and then I create an automated test that reflectively checks the codebase for types deriving from the interface, and fails if it finds any that are not exactly what and where I expect them to be. I compile this test into a project under a separate folder of the VCS that only I have rights to commit to, have CI compile it as an external library of the main project, and set it up to run as part of the CI test suite for user commits. Now, I have an automated test under my complete control that will tell me (and everyone else) if the number of implementations increases without my involvement, or an implementation that I did know about has anything new added or has its modifiers or those of its members changed. I can then investigate further, and regain the opportunity to beat developers over the head as necessary. Is this considered "reasonable" to want to do in situations like this? Am I going to be seen in a negative light for going behind my devs' backs to ensure they aren't doing something they shouldn't?

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  • What open source POSIX compliance test suites are available?

    - by Richard Pennington
    I'm working on a small open source project, ELLCC, that uses clang/LLVM as a cross compiler for various target processors. For the runtime environment, I'm using the NetBSD libraries and porting them to target Linux and standalone systems. I want to run a POSIX compliance test suite on the code. I've found the Open POSIX Test Suite, which looks like a good start, but it hasn't been updated since 2005. I've done some preliminary testing (with gcc and ecc under Linux), and it looks like it needs a few updates for modern compilers. My questions are: Does the Open POSIX Test Suite live on somewhere in a more up to date form? Are there other open source alternatives?

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  • tdd is about design not verification what does it concretely mean?

    - by sigo
    I've been wondering about this. What do we exactly mean by design and verification. Should I just apply tdd to make sure my code is SOLID and not check is correct external behaviour ? Should I use Bdd for the correct behaviour part ? Where I get confused also is regarding TDD code katas, to me they looked like more about verification than design... shouldn't they be called bdd katas instead of tdd katas? I reckon that for example uncle bob bowling kata leads in the end to a simple and nice internal design but I felt that most of the process was more around vérification than design. Design seemed to be a side effect of testing incrementally the external behaviour. I didnt feel so much that we were focusing most of our efforts on design but more on vérification. While normally we are told the contrary, that in TDD, verification is a side effect, design is the main purpose. So my question is what should i focus exactly on when i do tdd: SOLID, external Api usability, what else...? And how can I do that without being focused on verification ? What do you guys focus your energy on when you are practicing TDD ?

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  • How to organize unit/integration test in BDD

    - by whatf
    So finally after reading a lot, I have understood that the difference between BDD and TDD is between T & B. But coming from basic TDD background, what I used to was, first write unittest for database models write test for views (at this point start with integration test as well, along with unittests) write more integration tests for testing UI stuff. What would be a correct way to approach BDD. Say I have a simple blog application. Given : When a user logs in. He should be shown list of all his posts. But for this, I need a model with a row user, another row blog posts. So how do we go about writing tests? when do we create fixtures? When do we write integration (selenium) tests?

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  • Is there industry demand for developers who have no GUI experience?

    - by James Jeffery
    Is there still demand for developers who crate software without GUI's in the industry? Are jobs still in demand? I only ask because I write a lot of software for myself in C. I mainly use FreeBSD without a GUI. My software is for data mining, automation and marketing purposes most of the time as this is the field I work in. I find that a GUI is not needed and I feel comfortable working within a console. I've never worked for a company as a programmer, but in the industry do you have dedicated programmers who work exclusively on the GUI's and other who write the logic?

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  • How to determine the right amount of up front design?

    - by Gian
    Software developers occasionally are called upon to write fairly complex bits of software under tight deadlines. Often, it seems like the quickest thing to do is to simply start coding, and solve the problems as they arise. However, this approach can come back to bite you—often costing time or money in the long run! How do we determine the right amount of up front design work? If your work environment actively discourages you from thinking about things up front, how do you handle that? How can we manage risk if we eschew up-front thinking (by choice or under duress) and figure out the problems as they arise? Does the amount of up front design depend entirely on the size or complexity of the task, or is it based on something else?

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  • What can I do to encourage teams to lighten up? [closed]

    - by Rahul
    I work with a geographically distributed team (different timezones) with people from various cultures and background. Some of us have never met each other in person but we communicate with each other over phone, chat and email almost on an hourly basis. Most of our meetings and discussions are dead serious and boring. What's worse, any attempt at humor is not very well received because of cultural differences. I feel that we are all taking our work a bit too seriously. We don't shy away from painful arguments, nasty emails and heated discussions when things go wrong but never attempt to develop camaraderie or friendships in better times. I would like to know your experiences with such situations and what, if anything, did you do to lighten things up at workplace.

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  • test coverage reality

    - by iPhoneDeveloper
    I am NOT doing test driven development and I write my test classes after the actual code is written. In my current project I have a test coverage of(Line coverage) %70 for 3000 lines of Java code.(Using JUnit, Mockito and Sonar for testing) But while I feel actually I am not covering and catching %70 of the problems that can occur. So my question is in theory is that possible to have a %100 Line coverage but in reality it is meaningless because of low quality of the test code and maybe a %40 well written test code is much better than a bad %100 coverage? or we can always say line coverage more or less gives the percentage of all covered issues?

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