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  • Is static universally "evil" for unit testing and if so why does resharper recommend it?

    - by Vaccano
    I have found that there are only 3 ways to unit test (mock/stub) dependencies that are static in C#.NET: Moles TypeMock JustMock Given that two of these are not free and one has not hit release 1.0, mocking static stuff is not too easy. Does that make static methods and such "evil" (in the unit testing sense)? And if so, why does resharper want me to make anything that can be static, static? (Assuming resharper is not also "evil".) Clarification: I am talking about the scenario when you want to unit test a method and that method calls a static method in a different unit/class. By most definitions of unit testing, if you just let the method under test call the static method in the other unit/class then you are not unit testing, you are integration testing. (Useful, but not a unit test.)

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  • Wierd Results A/B Test in Google Website Optimizer

    - by Yisroel
    I set up a test in Google Website Optimizer that has a 3 variations - original (A), B, and C. In order to further validate the results of the test, I added a variation C that is exactly the same as the original. And thats where the results get weird. 6 days in to the test, the best performing variation is C. It outperforms the original by 18.4%! How is that possible? Do I now discount the results of this test entirely?

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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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  • Assignments in mock return values

    - by zerkms
    (I will show examples using php and phpunit but this may be applied to any programming language) The case: let's say we have a method A::foo that delegates some work to class M and returns the value as-is. Which of these solutions would you choose: $mock = $this->getMock('M'); $mock->expects($this->once()) ->method('bar') ->will($this->returnValue('baz')); $obj = new A($mock); $this->assertEquals('baz', $obj->foo()); or $mock = $this->getMock('M'); $mock->expects($this->once()) ->method('bar') ->will($this->returnValue($result = 'baz')); $obj = new A($mock); $this->assertEquals($result, $obj->foo()); or $result = 'baz'; $mock = $this->getMock('M'); $mock->expects($this->once()) ->method('bar') ->will($this->returnValue($result)); $obj = new A($mock); $this->assertEquals($result, $obj->foo()); Personally I always follow the 2nd solution, but just 10 minutes ago I had a conversation with couple of developers who said that it is "too tricky" and chose 3rd or 1st. So what would you usually do? And do you have any conventions to follow in such cases?

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  • Weird Results A/B Test in Google Website Optimizer

    - by Yisroel
    I set up a test in Google Website Optimizer that has a 3 variations - original (A), B, and C. In order to further validate the results of the test, I added a variation C that is exactly the same as the original. And thats where the results get weird. 6 days into the test, the best performing variation is C. It outperforms the original by 18.4%! How is that possible? Do I now discount the results of this test entirely?

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  • How do I check that my tests were not removed by other developers?

    - by parxier
    I've just came across an interesting collaborative coding issue at work. I've written some unit/functional/integration tests and implemented new functionality into application that's got ~20 developers working on it. All tests passed and I checked in the code. Next day I updated my project and noticed (by chance) that some of my test methods were deleted by other developers (merging problems on their end). New application code was not touched. How can I detect such problem automatically? I mean, I write tests to automatically check that my code still works (or was not deleted), how do I do the same for tests? We're using Java, JUnit, Selenium, SVN and Hudson CI if it matters.

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  • Google Analytics Content Experiments for non-simultaneous tests

    - by mnort9
    I really like how Google Analytics displays the results of content experiments. However, it seems the tool only works for simultaneous tests. I'd like to use the tool without implementing the page variation code into my site. For example, I want to test copy on an ecommerece category page. The original page variation would be the current page for the past 2500 visits. After making the copy changes, the new variation would be for the next 2500 visits. I realize I can simply record the metrics before and after each variation, but I'd like to take advantage of Google's presentation of the experiment. Is it possible to use the Content Experiments in this way?

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  • Should the test and the fix be written by different people?

    - by Nutel
    There is a common practice in TDD to write a test before fix to avoid regression and simplify fixing. I just wonder what if the test and fix will be written by different people, total spent time will be almost the same but as now three people will think about possible failures (+tester) we increase probability that fix will cover all possible failure scenarios. Does this practice make sense or it will just waste additional time needed for one more person to familiarize with bug?

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  • Where can I find statistics / figures on how long testing should / could take?

    - by NoCarrier
    I'm trying to convince management that testing/QA takes considerably longer than non-developers think. Some smaller shops don't have budgets for testers and phbs automatically assume the developer will spend a few minutes after every build "testing" and deliver a perfectly functional system. Can someone point me to some numbers? e.g. Testing should be XX% of your total man hour count , etc etc? Or perhaps some real world experience? My goal is to have some numbers that are grounded in real life so I can make time/effort allocation justifications for "proper" testing when preparing estimates and timelines for applications. Maybe not full blown 100% TDD, but pragmatically close to it. I apologize if I seem vague.

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  • What set of tools make up "the rails way" of testing javascript in the browser?

    - by Jordan Feldstein
    What's the concensus for doing in-browser (either headless or remote-controlled) testing of javascript? Unit testing my JS is nice, but can't protect against irresponsible changes to the DOM. Unit testing of the JS and functional testing of the views to make sure they both provide and utilize the same, correct DOM, might work, but then the link between JS and DOM is being covered in two places which seems brittle or cumbersome. Is there an acknowledged "Rails Way" to implement full-stack tests, where I can run my javascript against the DOM rendered by the rest of the app, and check the results? (Something like what PHPUnit and Selenium give us, but inside the rails framework?)

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  • Should I use a seperate class per test?

    - by user460667
    Taking the following simple method, how would you suggest I write a unit test for it (I am using MSTest however concepts are similar in other tools). public void MyMethod(MyObject myObj, bool validInput) { if(!validInput) { // Do nothing } else { // Update the object myObj.CurrentDateTime = DateTime.Now; myObj.Name = "Hello World"; } } If I try and follow the rule of one assert per test, my logic would be that I should have a Class Initialise method which executes the method and then individual tests which check each property on myobj. public class void MyTest { MyObj myObj; [TestInitialize] public void MyTestInitialize() { this.myObj = new MyObj(); MyMethod(myObj, true); } [TestMethod] public void IsValidName() { Assert.AreEqual("Hello World", this.myObj.Name); } [TestMethod] public void IsDateNotNull() { Assert.IsNotNull(this.myObj.CurrentDateTime); } } Where I am confused is around the TestInitialize. If I execute the method under TestInitialize, I would need seperate classes per variation of parameter inputs. Is this correct? This would leave me with a huge number of files in my project (unless I have multiple classes per file). Thanks

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  • How to populate a private container for unit test?

    - by Sardathrion
    I have a class that defines a private (well, __container to be exact since it is python) container. I am using the information within said container as part of the logic of what the class does and have the ability to add/delete the elements of said container. For unit tests, I need to populate this container with some data. That date depends on the test done and thus putting it all in setUp() would be impractical and bloated -- plus it could add unwanted side effects. Since the data is private, I can only add things via the public interface of the object. This run codes that need not be run during a unit test and in some case is just a copy and paste from another test. Currently, I am mocking the whole container but somehow it does not feel that elegant a solution. Due to Python mocking frame work (mock), this requires the container to be public -- so I can use patch.dict(). I would rather keep that data private. What pattern can one use to still populate the containers without excising the public method so I have data to test with? Is there a way to do this with mock' patch.dict() that I missed?

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  • JMeter: how to asign a single distinct value from CSV Data Set Config to each thread in thread group?

    - by JohnnyM
    I have to make a load test for a relatively large number of users so I cant realy use User Parameters pre-processor to parametrize each thread with custom user data. I've read that I should use CSV Data Set Config instead. However I run into a problem with how JMeter interprets the input of this Config. Example: I have a thread group of 3 threads and Loop Count:10 with one HTTP request sampler with server www.example.com and path: \${user}. The csv file (bullet is a single line in file) for CSV Data Set Config to extract the user parameter: 1 2 3 4 5 Expected output is that for thread 1-x the path of the request should be: \x. So the output file should consist of 10 samples per thread namely: for thread 1-1 : 10 requests to www.example.com\1 for thread 1-2 : 10 requests to www.example.com\2 for thread 1-3 : 10 requests to www.example.com\3 but instead i get requests to each \1 - \5 and then to EOF. Does anyone know how to achieve the expected effect with CSV Data Set Config in jmeter 2.9?

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  • Any good tools or tips for fuzz testing Windows forms applications?

    - by Ogre Psalm33
    I'm maintaining a ~300K LOC C# legacy thick-client application with a Windows.Forms interface. The app is full of little bugs and quirks. For example, I recently discovered a bug where if a users edits and tabs (not clicks) through cells on a DataViewGrid, and leaves the a certain cell selected, the app gets an "Object reference not set to an instance of an object" exception. I discover (or get a bug report of) something new like this about every week or two. I've had enough, and was thinking of trying some sort of fuzz testing on the application to try to ferret out undiscovered issues. If I roll-my-own fuzz testing, I'd assume I at least need to be able to generate test harnesses that run pieces of my app (main window, FormX, FormY, FormZ, ...) independently and try to inject events into them. I was trying to look for tools suited for this, but so far have come up with nothing for Win Forms. (There seems to be no shortage of fuzz testing tools for web apps, however). Any helpful ideas?

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  • Is there a Java Package for testing RESTful APIs?

    - by Zachary Spencer
    I'm getting ready to dive into testing of a RESTful service. The majority of our systems are built in Java and Eclipse, so I'm hoping to stay there. I've already found rest-client (http://code.google.com/p/rest-client/) for doing manual and exploratory testing, but is there a stack of java classes that may make my life easier? I'm using testNG for the test platform, but would love helper libraries that can save me time. I've found http4e (http://www.ywebb.com/) but I'd really like something FOSS.

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  • Looking for Info on a Javascript Testing framework

    - by DaveDev
    Hi Can somebody fill me in on JavaScript Testing Frameworks? I'm working on a project now and as the JS (Mostly jQuery) libraries grow, it's getting more and more difficult to introduce change or refactor, because I have no way of guaranteeing the accuracy of the code without manually testing everything. I don't really know anything about JavaScript Testing Frameworks, or how they integrate/operate in a .Net project, so I thought I'd ask here. What would a good testing framework be for .Net? What does a JavaScript test look like? (e.g. with NUnit, I have [TestFixture] classes & [Test] methods in a ProjectTests assembly) How do I run a javascript test? What are the conceptual differences between testing JS & testing C#? Is there anything else that would be worth knowing? Thanks Dave

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  • PHP: How to begin testing large, existing codebase, and test for regression on production site?

    - by anonymous coward
    I'm in charge of at least one large body of existing PHP code, that desperately needs tests, and as well I need some method of checking the production site for errors. I've been working with PHP for many years, but am unfortunately new to testing. (Sorry!). While writing tests for code that has predictable outcomes seems easy enough, I'm having trouble wrapping my head around just how I can test the live site, to ensure proper output. I know that in a test environment, I could set up the database in a known state... but are there proper methods or techniques for testing a live site? Where should I begin? [I am aware of PHPUnit and SimpleTest, but haven't chosen one over the other yet]

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  • Keeping iPhone App private after AppStore approval for beta testing.

    - by Stack
    I have messed around with AD-HOC distribution quite a bit and got it working too. The problem I am facing is all the people who I want to use as beta testers are "normal people" who never even sync their iPhone to iTunes on a computer. So, you can understand how technically challenged these people are, which is fine with me because that is the audience I want to use for testing. All these guys can do for me is if I can give them an AppStore link they will download it on their iPhone and test it for me. So, basically AD-HOC distribution (UDIDs, mobileprovision file and all that crap) is out of question for me. My Question is after AppStore approves my app, is there a way for me to be under the radar so that normal public can not download the app until I am ready. From past experience I know that the moment you put an app out there, in first week you get 100s of downloads and I dont want that to happen until my beta testing is finished.

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  • Testing realistic loads for new versions of existing web app

    - by David Cournapeau
    Assuming I have a relatively complex web application, I am interested in testing performances of a new version using a traffic as realistic as possible. Traffic is relatively complex (session-based, lots of internal logic which depends on incoming requests). The webapp depends on many servers (databases, frontends, etc...). I can think of two basic directions: Recording every incoming request with its timestamp in production in a centralized manner and replaying it from N clients to reproduce a load as close as possible as the original. Issue: because we have many servers, getting the centralized log is not trivial. having a system duplicating requests to a staging area so that I could "plug" a dev version of my webapp to it at anytime without affecting the production. Issue: I have not found much information about it expect this, which suggests to me that may not be the best solution. OTOH, it is realistic by definition. What is the standard way of doing this kind of testing ? I did not find much information about load testing with complex, realistic traffic.

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  • What is the best way to do testing database (MYSQL spesific)

    - by justjoe
    Right now i'm on testing something in a database. It's a wordpress database. i have to write and delete and do other operation on it. As you know it, it has indexing mechanism that will always make every new post inherit the next highest possible ID. Please consider that this database is a copying of used database. it has been written before. So, i will need to make sure when i finish my testing, it will be the same Right now, my only solution is making backup. So if i have end in some section of planned testing, i will backup it and start next testing on another copy of it. Fortunately, the size of database is only a small one. so delete and copy and backup it will be easy. but i know this way of database testing is only partial solution.It force me to create too many backup copy. I don't know what i will do if the database has bigger size. it will be a very long of testing nightmare. so i wonder is there any solution that work just like rollback. So it will just lock the database and just put new entry as some kind of cache. I can erase it or write it into the database. i use mysql and phpmyadmin and use it to developed some custom solution. EDIT ::: How to effectively doing testing on database when developing PHP solution ?

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  • Testing a wide variety of computers with a small company

    - by Tom the Junglist
    Hello everyone, I work for a small dotcom which will soon be launching a reasonably-complicated Windows program. We have uncovered a number of "WTF?" type scenarios that have turned up as the program has been passed around to the various not-technical-types that we've been unable to replicate. One of the biggest problems we're facing is that of testing: there are a total of three programmers -- only one working on this particular project, me -- no testers, and a handful of assorted other staff (sales, etc). We are also geographically isolated. The "testing lab" consists of a handful of VMWare and VPC images running sort-of fresh installs of Windows XP and Vista, which runs on my personal computer. The non-technical types try to be helpful when problems arise, we have trained them on how to most effectively report problems, and the software itself sports a wide array of diagnostic features, but since they aren't computer nerds like us their reporting is only so useful, and arranging remote control sessions to dig into the guts of their computers is time-consuming. I am looking for resources that allow us to amplify our testing abilities without having to put together an actual lab and hire beta testers. My boss mentioned rental VPS services and asked me to look in to them, however they are still largely very much self-service and I was wondering if there were any better ways. How have you, or any other companies in a similar situation handled this sort of thing? EDIT: According to the lingo, our goal here is to expand our systems testing capacity via an elastic computing platform such as Amazon EC2. At this point I am not sure suggestions of beefing up our unit/integration testing are going to help very much as we are consistently hitting walls at the systems testing phase. Has anyone attempted to do this kind of software testing on a cloud-type service like EC2? Tom

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  • With Google Website Optimizer's multivariate testing, can I vary multiple css classes on a single di

    - by brahn
    I would like to use Google Website Optimizer (GWO)'s multivariate tests to test some different versions of a web page. I can change from version to version just by varying some class tags on a div, i.e. the different versions are of this form: <div id="testing" class="foo1 bar1">content</div> <div id="testing" class="foo1 bar2">content</div> <div id="testing" class="foo2 bar1">content</div> <div id="testing" class="foo2 bar2">content</div> In the ideal, I would be able to use GWO section code in place of each class, and google would just swap in the appropriate tags (foo1 or foo2, bar1 or bar2). However, naively doing this results in horribly malformed code because I would be trying to put <script> tags inside the div's class attribute: <div id="testing" class=" <script>utmx_section("foo-class")</script>foo1</noscript> <script>utmx_section("bar-class")</script>bar1</noscript> "> content </div> And indeed, the browser chokes all over it. My current best approach is just to use a different div for each variable in the test, as follows: <script>utmx_section("foo-class-div")</script> <div class="foo1"> </noscript> <script>utmx_section("bar-class-div")</script> <div class="bar1"> </noscript> content </div> </div> So testing multiple variables requires layer of div-nesting per variable, and it all seems rather awkward. Is there a better approach that I could use in which I just vary the classes on a single div?

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