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• Why not write all tests at once when doing TDD? [closed]

  - by RichK

  Possible Duplicate: Why not write all tests at once when doing TDD? The Red - Green - Refactor cycle for TDD is well established and accepted. We write one failing unit test and make it pass as simply as possible. What are the benefits to this approach over writing many failing unit tests for a class and make them all pass in one go. The test suite still protects you against writing incorrect code or making mistakes in the refactoring stage, and code coverage should be just as high, so what's the harm? Sometimes it's easier to write all the tests first as a form of 'brain dump' to quickly write down all the expected behavior in one go.

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• Calling a parameterized javascript function from php [migrated]

  - by Ginger

  I need to call a javascript function from php, by passing a value in php variable. My code goes like this: echo '<tr class="trlight"><td onclick="callVehicle('.$qry_vehicleid.');"><label>Call Vehicle</label>&nbsp;</td></tr>'; And in javascript file I try to execute the following code: function callVehicle(vid) { alert('Call '+vid); document.getElementById("SearchResult").style.visibility="hidden"; } and an error test is not defined occurs. test is the value that I assigned to variable $qry_vehicleid. Can someone please point out what the mistake is?

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• Can exim be configured to send all emails externally?

  - by Tom Brossman

  How do I configure exim4 to route all emails via a third-party SMTP server when the sender's domain, recipient's domain, and server hostname all match? I followed this great answer and have exim4 sending emails to addresses at other domains tested and working from an Ubuntu server. My only issue is that emails where both the sender and recipient share the same domain as the server hostname, they never leave the server (and this is the expected behavior). For example, sending from [email protected] -- [email protected] works fine, but sending from [email protected] -- [email protected] just routes the mail locally to /var/mail/account2, without passing through the third-party SMTP server. I'm using Google Apps at my own domain and want to send emails from [email protected] to [email protected] from a machine with the hostname example.com. I want to route them through Google's SMTP server so I see them in my other email clients. Is this possible? Very similar questions (but for postfix) here and here.

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• AS3 - At exactly 23 empty alpha channels, images below stop drawing

  - by user46851

  I noticed, while trying to draw large numbers of circles, that occasionally, there would be some kind of visual bug where some circles wouldn't draw properly. Well, I narrowed it down, and have noticed that if there is 23 or more objects with 00 for an alpha value on the same spot, then the objects below don't draw. It appears to be on a pixel-by-pixel basis, since parts of the image still draw. Originally, this problem was noticed with a class that inherited Sprite. It was confirmed to also be a problem with Sprites, and now Bitmaps, too. If anyone can find a lower-level class than Bitmap which doesn't have this problem, please speak up so we can try to find the origin of the problem. I prepared a small test class that demonstrates what I mean. You can change the integer value at line 20 in order to see the three tests I came up with to clearly show the problem. Is there any kind of workaround, or is this just a limit that I have to work with? Has anyone experienced this before? Is it possible I'm doing something wrong, despite the bare-bones implementation? package { import flash.display.Sprite; import flash.events.Event; import flash.display.Bitmap; import flash.display.BitmapData; public class Main extends Sprite { public function Main():void { if (stage) init(); else addEventListener(Event.ADDED_TO_STAGE, init); } private function init(e:Event = null):void { removeEventListener(Event.ADDED_TO_STAGE, init); // entry point Test(3); } private function Test(testInt:int):void { if(testInt==1){ addChild(new Bitmap(new BitmapData(200, 200, true, 0xFFFF0000))); for (var i:int = 0; i < 22; i++) { addChild(new Bitmap(new BitmapData(100, 100, true, 0x00000000))); } } if(testInt==2){ addChild(new Bitmap(new BitmapData(200, 200, true, 0xFFFF0000))); for (var j:int = 0; j < 23; j++) { addChild(new Bitmap(new BitmapData(100, 100, true, 0x00000000))); } } if(testInt==3){ addChild(new Bitmap(new BitmapData(200, 200, true, 0xFFFF0000))); for (var k:int = 0; k < 22; k++) { addChild(new Bitmap(new BitmapData(100, 100, true, 0x00000000))); } var M:Bitmap = new Bitmap(new BitmapData(100, 100, true, 0x00000000)); M.x += 50; M.y += 50; addChild(M); } } } }

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• New Development Snapshot

  I got a little side tracked by the investigation of the Google Collections test suite performance issue, reported by Albert Strasheim in the comments to the previous snapshot. This caused me to do some work on exception handling (unfortunately without any performance benefit to the Google Collections test suite) which, in turn, triggered something I've been wanting to do for while, namely to introduce a stub version of IKVM.OpenJDK.Core.dll which can...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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• Creating an Interface To a Language's Standard Library?

  - by Nathan Arthur

  In the process of learning test-driven development, I've been introduced to dependency injection and the use of interfaces, and have started using these concepts in my own PHP code in order to make it more testable. There have been times when I've needed to test code that was doing things like calling the PHP time() function. In order to make these tests predictable, it seemed logical to create an interface to the standard PHP functions I use so that I can mock them out in my tests. Is this good software design? What are the pros and cons of doing this? I've found myself groaning at how quickly my PHP interface can stick its fingers into everything I do. Is there a better way to make code that relies on PHP-accessed state and functions more testable?

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• Run Tests in Folder

  - by Tomas Mysik

  Hi all, today we would like to show you another minor improvement we have prepared for NetBeans 7.2. Today, let's talk a little bit about testing. This minor improvement will be useful especially for users who have a lot of unit tests (it means all of us, right? ;) - just right click on any folder underneath Test Files node and you will notice: The result is as expected - all the tests from the given folder are run: That's all for today, as always, please test it and report all the issues or enhancements you find in NetBeans BugZilla (component php, subcomponent PHPUnit).

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• Is doing AB Tests using site redirection a bad practice?

  - by user40358

  I'm developing hotels websites here in Brazil. When the site is done, we do an AB test with the old version to measure conversion and show to the hotel owner how good our site is. Due to the fact that I cannot put the old site inside the new one as a subresource (newone.com/old), currently I'm doing those AB test as follows: 1) I create 2 Google Analytics accounts, one for each site (old and new); 2) I put the GA tags in the old website pages (changing its possibly existent GA ID to the just created one); 3) I put an Javascript code that redirects the user to the old website (in a different URL and different domain) with 50% of probability. So I compare all the metrics, events and goals between those two GA accounts. How bad is it? How Google can interpretate the fact of being, sometimes redirected, sometimes don't? The experiment usually runs for 2 weeks. Is there any other alternative for doing this in a better way?

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• PHP efficiency question [closed]

  - by Ron

  Hello everyone. I am working on website and I am trying to make it fast as much as possible - especially the small things that can make my site a little bit quicker. So, my to my question - I got loop that run 5 times and in each time it echo something, If I'll make variable and the loop will add the text I want to echo into the variable and just in the end I'll echo the variable - will it be faster? loop 1 (with the echo inside the loop) for ($i = 0;$i < 5;$i++) { echo "test"; } loop 2 (with the echo outside [when the loop finish]) $echostr = ""; for ($i = 0;$i < 5;$i++) { $echostr .= "test"; } echo $echostr; I know that loop 2 will increase a bit the file size and therefore the user will have to download more bytes but If I got huge loop will it be better to use second loop or not? Thanks.

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• Request of some opinions about a vertical menu style and some suggestions for the site style [on hold]

  - by AndreaNobili

  I am developing a simple mainly static website using WordPress (because maybe in the future I will add some dynamic content) for a company. The new site have to follow the structure of the old site that requires the presence of a vertical main menu in the left column that contains the link to all the statics pages in the site. This is the old site structure: http://www.saranistri.com/ Now I have installed a new WordPress test site (this is only a test site): http://onofri.org/example/ As you can see in the left columns I have put two main menu vetical widgets that implements a possible choise for the maun menù (the top menù upon the header must be eliminated in the final implementation) I want to know some opinions about: 1) Which of the two version is better? Do you have some additional ideas about the CSS style of this vertical menu? 2) What could I do to give a more professional look to this site? (I know that I have to insert a logo into the header) Tnx Andrea

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• Why not write all tests at once when doing TDD?

  - by RichK

  The Red - Green - Refactor cycle for TDD is well established and accepted. We write one failing unit test and make it pass as simply as possible. What are the benefits to this approach over writing many failing unit tests for a class and make them all pass in one go. The test suite still protects you against writing incorrect code or making mistakes in the refactoring stage, so what's the harm? Sometimes it's easier to write all the tests first as a form of 'brain dump' to quickly write down all the expected behavior in one go.

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• Mouse and KeyBoard Hooking utility with VC++.

  Test Automation software's code revealed with the help of mouse and keyboard hooking!!!

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• Deleted files not increasing available free space on Ubuntu (as reported by df -h)

  - by Homunculus Reticulli

  I am writing data munging scripts (python and bash), to munge data and import large quantities of text files into a database. I am currently in the test phase, so I am generating several K's of files and deleting them (the files consume about 20G of space). After a test run, I delete the files (sometimes without having imported into the database). I notice that there is a steady decrease in the amount of free space on my disk (as reported by df -h). I don't understand this, as I use rm * (in the data directory), and in the cases where I use Nautilus, I empty the Trash bin as well. Similarly, I notice that when I import the data into the (postgresql) database, and then delete the data from the tables using DELETE FROM tablename;, the size consumed in the postgresql data directory does not go down either. Currently, I have lost approximately 200G from hard drive, and I need to reclaim that - but don't know what to do to reclaim it - any ideas?. I am running Ubuntu 10.0.4 LTS + postgresql 8.4

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• The device is not ready

  - by hmloo

  When you retrieve the drive info using the DriveInfo class, if you don't use the IsReady property to test whether a drive is ready, it will throw error as "The device is not ready". so you must use IsReady property to determines if the drive is ready to be queried, written to, or read from. The following code example demonstrates querying information for all drives on current system. using System; using System.IO; class Test { public static void Main() { DriveInfo[] allDrives = DriveInfo.GetDrives(); foreach (DriveInfo d in allDrives) { Console.WriteLine("Drive {0}", d.Name); Console.WriteLine(" File type: {0}", d.DriveType); if (d.IsReady == true) { Console.WriteLine(" Volume label: {0}", d.VolumeLabel); Console.WriteLine(" File system: {0}", d.DriveFormat); Console.WriteLine( " Available space to current user:{0, 15} bytes", d.AvailableFreeSpace); Console.WriteLine( " Total available space: {0, 15} bytes", d.TotalFreeSpace); Console.WriteLine( " Total size of drive: {0, 15} bytes ", d.TotalSize); } } } }

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• Can I redirect the HTTP request towards an old folder to the homepage using .htaccess file?

  - by AndreaNobili

  I have to following situation: I had an old blog that was made using Joomla (this blog was indexed well enough by search engines). For some problems I delete it and I have create it again using WordPress. Now I have many visit (from Google) that leading to specific pages of the old site (pages that don't exist in the new version). For example I have visit to URL as: /scorejava/index.php/corso-spring-mvc/1-test that don't exist on my new site. I would know if using the .htaccess file (or other sistem) I can redirect the HTTP request directed to some subfolder (that don't exist in the new version) to the homepage of my new site. For example I have the request towards the void URL: /scorejava/index.php/corso-spring-mvc/1-test. And I would create a regular expression that say something like: all the request toward the subfolder corso-spring-mvc (and all it's content file and subfolder) have to be redirected to www.scorejava.com. Is it possible?

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• Validation and Verification explanation (Boehm) - I cannot understand its point

  - by user970696

  Hopefully my last thread about V&V as I found the B.Boehm is text which I just do not understand well (likely my technical English is not that good). http://csse.usc.edu/csse/TECHRPTS/1979/usccse79-501/usccse79-501.pdf Basically he says that verification is about checking that products derived from requirements baseline must correspond to it and that deviation leads only to changes in these derived products (design, code). But he says it begins with design and ends with acceptance tests (you can check the V model inside). The thing is, I have accepted ISO12207 in terms of all testing is validation, yet it does not make any sense here. In order to be sure the product complies with requirements (acceptance test) I need to test it. Also it says that validation problems means that requirements are bad and needs to be changed - which does not happen with testing that testers do, who just checks correspondence with requirements.

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• chmod - file permission on writable

  - by user1350338

  I am running Ubuntu 12.04 x64 server on ext4 partition. I set a directory's permission to '766' as below. sudo chmod 766 /archive drwxrw-rw- 3 root root 4096 Sep 27 10:50 archive/ <BR><BR><BR> But, when I tried to create new file through vi editor, permission error has occured. vi /archive/test.txt -------- > "/archive/test.txt" [Permission Denied] I thought I had "write" permission. Could anyone help me what is the problem?

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• [MAJ] Afficher ses images ? la taille voulue - Utilisation du composant IMGSIZE

  Ajout de la v?rification de l'existence du fichier et d'un test d'erreur de retour du composant ImgSize.

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• Visual Studio Load Tests Virtual Users Simulation

  - by Eldar

  Hello, I'm currently working on writing a load testing application that takes advantage of Load Test using Visual Studio 2010. The load test will simulate 20 users on the same machine, and I need some data to be shared in-memory between all simulated users. I was suprised I couldn't find documentation answering the following question: What seperates each virtual user's running context from the other? Does each virtual user runs the tests in its own process? Maybe in its own app domain? Or just on its own thread? I need to know because if each user is running tests in its own process then all the in-memory cache isn't shared and is created for each user instead of one time for all of them, which is bad for me.

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• Collaborative Filtering Techniques

  - by user95261

  Good Day! I am in need of help about collaborative filtering techniques implementation in predicting psychopathy of twitter users. I have two data set, training set and test set. Training set users have already scores in psychopathy, I need any collaborative filtering techniques to predict scores of test set users. Collaborative Filtering such as Item/User-Based CF, Bayesian Belief Nets, Clustering, Latent Semantic, etc. Please help me. :( I am very confused on how to implement any of these. Thank you!

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• Advice on Software Development

  - by user12514

  I am currently taking Business IT Foundation Degree course which involves SDLC and its my first year. I will be going out in the industry for the second year and I would just like to know some facts before launching out. I have been asked to create a system to enable the company to manage their staff and also to create a windows based system where users can register, view their details and so on. I am required to create: Several UML use case diagrams A conceptual class Diagram Test cases and test logs These have to been done for the windows based system. My concern is that I am not sure what a windows based system is and secondly I am having difficulties creating the diagrams as I am not familiar with them. Could anyone be kind enough to explain what they are and how I go about doing them please? Thank you.

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• Dual 7950, freezes during startup

  - by Hiro

  I have two identical video cards right now. Xubuntu will boot up no problem if I only have one card installed. If I install the 2nd card it will just hang midway thru the loading screen. Regardless of which card I use and which position on the motherboard, it will freeze if I have both installed. I've tried installing the proprietary drivers, both fglrx and fglrx-updates, still freezes in the same spot. Uninstalled those and went back to the default ones. The only way I can get a terminal is by booting into failsafe mode. Booting using 13.10 i386 on a USB stick gives me some errors related to what I think is the 2nd video card: [drm:r600_ring_test] ERROR radeon: ring 1 test failed (scratch(0x850C)=0xCAFEDEAD) [drm:r600_dma_ring_test] ERROR radeon: ring 3 test failed (0x02FFFF6B) radeon 0000:0200.2 disabling GPU acceleration"

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• How to populate a form list with buttons using javascript

  - by StealingMana

  I made a script that, when you press one button(accessories) the selection(mylist) populates with one array(accessoryData), and when you hit the other button(weapons) the other array(weaponData) populates the selection. However, in the current state of the code the second button press is not re-populating the selection. What is wrong here? Also if there is a more efficient way to do this, that might be helpful. Full code function runList(form, test) { var html = ""; var x; dataType(test); while (x < dataType.length) { html += "<option>" + dataType[x]; x++; } document.getElementById("mylist").innerHTML = html; }

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• how to get sapi to say 1 word from a list of words

  - by mvaughn

  I am writing a program for a spelling test in vb 2010. I have 20 input textboxes for the user to spell the words as sapi says them. My question is ! How do I get sapi to say a word from a multiline textbox then pause and give the focus to the 1st textbox so the user can type it and give them 30 sec then sapi will say the next word then give focus to the 2nd textbox so user can type and give them 30 secs to type the word. Then sapi will say 3rd word the user will get 30 secs to type the word all the way to 20 words then the test will be done. I have 1 multiline textbox that holds 20 words

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• Why can't Java/C# implement RAII?

  - by mike30

  Question: Why can't Java/C# implement RAII? Clarification: I am aware the garbage collector is not deterministic. So with the current language features it is not possible for an object's Dispose() method to be called automatically on scope exit. But could such a deterministic feature be added? My understanding: I feel an implementation of RAII must satisfy two requirements: 1. The lifetime of a resource must be bound to a scope. 2. Implicit. The freeing of the resource must happen without an explicit statement by the programmer. Analogous to a garbage collector freeing memory without an explicit statement. The "implicitness" only needs to occur at point of use of the class. The class library creator must of course explicitly implement a destructor or Dispose() method. Java/C# satisfy point 1. In C# a resource implementing IDisposable can be bound to a "using" scope: void test() { using(Resource r = new Resource()) { r.foo(); }//resource released on scope exit } This does not satisfy point 2. The programmer must explicitly tie the object to a special "using" scope. Programmers can (and do) forget to explicitly tie the resource to a scope, creating a leak. In fact the "using" blocks are converted to try-finally-dispose() code by the compiler. It has the same explicit nature of the try-finally-dispose() pattern. Without an implicit release, the hook to a scope is syntactic sugar. void test() { //Programmer forgot (or was not aware of the need) to explicitly //bind Resource to a scope. Resource r = new Resource(); r.foo(); }//resource leaked!!! I think it is worth creating a language feature in Java/C# allowing special objects that are hooked to the stack via a smart-pointer. The feature would allow you to flag a class as scope-bound, so that it always is created with a hook to the stack. There could be a options for different for different types of smart pointers. class Resource - ScopeBound { /* class details */ void Dispose() { //free resource } } void test() { //class Resource was flagged as ScopeBound so the tie to the stack is implicit. Resource r = new Resource(); //r is a smart-pointer r.foo(); }//resource released on scope exit. I think implicitness is "worth it". Just as the implicitness of garbage collection is "worth it". Explicit using blocks are refreshing on the eyes, but offer no semantic advantage over try-finally-dispose(). Is it impractical to implement such a feature into the Java/C# languages? Could it be introduced without breaking old code?

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