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• Refernce platform specific System.Data.SQLite

  - by Dmitriy Nagirnyak

  Hi, I am using SQLite for the unit testing and might use it as a database for local development/staging. The System.Data.SQLite has basically 2 versions: x86 and x64. Correct one should be used for the specific platform. I have 64 bit Win7, other guys in the team might use 32-bit OSs. The server's platform is not known at this stage. If I use 32-bit version of the assembly on 64-bit platform I get BadImageFormatException: Could not load file or assembly 'System.Data.SQLite'. I believe similar will happen trying to use 64-bit assembly on 32-bit platform. So my question is what is the best way to reference the SQLite assembly so that it does not depend on the platform and people can just use it? It is ok to use 32-bit version of assembly on a 64-bit platform (Maybe there is a switch for that somewhere?). Thanks, Dmitriy.

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• SyntaxError using gdata-python-client to access Google Book Search Data API

  - by isbadawi

  >>> import gdata.books.service >>> service = gdata.books.service.BookService() >>> results = service.search_by_keyword(isbn='0434003484') Traceback (most recent call last): File "<pyshell#4>", line 1, in <module> results = service.search_by_keyword(isbn='0434003484') ... snip ... File "C:\Python26\lib\site-packages\atom\__init__.py", line 127, in CreateClassFromXMLString tree = ElementTree.fromstring(xml_string) File "<string>", line 85, in XML SyntaxError: syntax error: line 1, column 0 This is a minimal example -- in particular, the book service unit tests included in the package also fail with the exact same error. I've looked at the wiki and open issue tickets on Google Code to no avail (and this seems to me more apt to be a silly error on my end rather than a problem with the library). I'm not sure how to interpret the error message. If it matters, I'm using python 2.6.5.

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• What is the right way to initialize a constant in Ruby?

  - by zbrimhall

  I have a simple class that defines some constants, e.g.: module Foo class Bar BAZ = "bof" ... Everything is puppies and rainbows until I tell Rake to run all my Test::Unit tests. When it does, I get warnings: bar.rb:3: warning: already initialized constant BAZ My habit has been to avoid these warnings by making the constant initialization conditional, e.g.: ... BAZ = "bof" unless const_defined? :BAZ ... This seems to solve the problem, but it is a little tedious, and I don't ever see anyone else initializing constants this way. This makes me think I might be Doing It Wrong. Is there a better way to initialize constants that won't generate warnings?

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• Mocking User.Identity in ASP.NET MVC

  - by Trey Carroll

  I need to create Unit Tests for an ASP.NET MVC 2.0 web site. The site uses Windows Authentication. I've been reading up on the necessity to mock the HTTP context for code that deals with the HttpContext. I feel like I'm starting to get a handle on the DI pattern as well. (Give the class an attribute of type IRepository and then pass in a Repository object when you instantiate the controller.) What I don't understand, however, is the proper way to Mock the Windows Principal object available through User.Identity. Is this part of the HttpContext? Does any body have a link to an article that demonstrates this (or a recommendation for a book)? Thanks, Trey Carroll

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• Why is AudioOutputUnitStart freezing my app in iOS 4?

  - by Luke

  Hi guys, I have an audio app which uses the RemoteIO AudioUnit. It works fine on iPhone, iPad, and any flavor of the simulator on 3.2, but when it hits AudioOutputUnitStart (), it freezes. I get the message "AddRunningClient starting device on non-zero client count" in the console, which I'm not sure how to resolve. I stop the unit and dispose of the AudioComponent every time the app closes. The app works fine the first time I run after restarting everything, but freezes every time after that. What's strange is there are no error messages - just an unresponsive interface and a frozen line of code. Thanks for your help. Luke

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• Linq-to-sql Compiled Query is returning result from different DataContext

  - by Vladimir Kojic

  Compiled query: public static Func<OperationalDataContext, short, Machine> QueryMachineById = CompiledQuery.Compile((OperationalDataContext db, short machineID) => db.Machines.Where(m => m.MachineID == machineID).SingleOrDefault()); It looks like compiled query is caching Machine object and returning the same object even if query is called from new DataContext (I’m disposing DataContext in the service but I’m getting Machine from previous DataContext). I use POCOs and XML mapping. Revised: It looks like compiled query is returning result from new data context and it is not using the one that I passed in compiled-query. Therefore I can not reuse returned object and link it to another object obtained from datacontext thru non compiled queries. I’m using unit of work pattern : // First Call Using(new DataContext) { Machine from DataContext.Table == machine from cached query } // Do some work // Second Call is failing Using(new DataContext) { Machine from DataContext.Table <> machine from cached query }

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• adding errors to Django form errors.__all__

  - by hendrixski

  How do I add errors to the top of a form after I cleaned the data? I have an object that needs to make a REST call to an external app (google maps) as a pre-save condition, and this can fail, which means I need my users to correct the data in the form. So I clean the data and then try to save and add to the form errors if the save doesn't work: if request.method == "POST": #clean form data try: profile.save() return HttpResponseRedirect(reverse("some_page", args=[some.args])) except ValueError: our_form.errors.__all__ = [u"error message goes here"] return render_to_response(template_name, {"ourform": our_form,}, context_instance=RequestContext(request)) This failed to return the error text in my unit-tests (which were looking for it in {{form.non_field_errors}}), and then when I run it through the debugger, the errors had not been added to the forms error dict when they reach the render_to_response line, nor anywhere else in the our_form tree. Why didn't this work? How am I supposed to add errors to the top of a form after it's been cleaned?

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• How can I make Delphi packages (create a .bpl file)?

  - by Pharaoh

  I want to create *.bpl file but I am failing to do so. Specifically, I am trying to make JEDI plugins, but I have tried an empty pure Delphi package, too. If I create a new package in Delphi XE3, I get an empty unit - if I "make" this project called "Package1.bpl", I get a .dcu file in "debug/win32/", but no .bpl file. No error is reported by the compiler. An empty JEDI plugin (bpl-style) only gives a .dcu, too, while an empty dll-style JEDI plugin gives a .cdu and a .dll file in "debug/win32/". This is the first time I am tryimg to make a new package, so I am completely lost. What am I missing? Pharaoh

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• Composing actors

  - by Brian Heylin

  I've implemented a Listenable/Listener trait that can be added to Actors. I'm wondering if it's possible to attach this style of trait to an actor without it having to explicitly call the listenerHandler method? Also I was expecting to find this functionality in the Akka library. Am I missing something or is there some reason that Akka would not not include this? trait Listenable { this: Actor => private var listeners: List[Actor] = Nil protected def listenerHandler: PartialFunction[Any, Unit] = { case AddListener(who) => listeners = who :: listeners } protected def notifyListeners(event: Any) = { listeners.foreach(_.send(event)) } } class SomeActor extends Actor with Listenable { def receive = listenerHandler orElse { case Start => notifyListeners(Started()) case Stop => notifyListeners(Stopped()) } }

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• testing SpringMVC controllers

  - by Don

  Hi, I'm unit-testing my SpringMVC (v. 2.5) controllers using code like the following: public void testParamValidation() { MyController controller = new MyController(); MockHttpServletRequest request = new MockHttpServletRequest(); request.addParameter("foo", "bar"); request.addParameter("bar", baz"); ModelAndView mav = controller .handleRequest(request, new MockHttpServletResponse()); // Do some assertions on mav } This controller is a subclass of AbstractCommandController, so the parameters are bound to a command bean, and any binding or validation errors are stored in an object that implements the Errors interface. I can't seem to find any way to access this Errors from within the test, is this possible? Thanks, Don

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• Using Unity and interfaces, how do I create a concrete class that implements IDisposable

  - by Ryan ONeill

  I have an interface (IDbAccess) for a database access class so that I can unit test it using Unity. It all works fine in Unity and now I want to make the concrete database class implement IDisposable so that it closes the db connections. My problem is that Unity does not understand that my concrete class is disposable because the interface (IDbAccess) cannot implement another interface. So how can I write code like this (pseudo code) so that Unity is aware that it needs to dispose the class as soon as I am done? Using var MyDbAccessInstance = Unity.Resolve<IDbAccess> { } Thanks Ryan

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• Unable to load DLL 'foo.dll', but only when running through vhost

  - by biozinc

  This is a variation on the old System.DllNotFoundException: Unable to load DLL 'foo.dll': The specified module could not be found. (Exception from HRESULT: 0x8007007E). problem (where, of course, foo.dll is the name of an actual DLL). The strange part is that I only get this error when I "Run" in VS (2008 if that's relevant). That sits in the MyApp.vhost.exe processes. If I run the actual app in a command line (MyApp.exe) I encounter no errors. The problem extends to unit tests with MSTest. A check on the DLL with DependencyWalker on Foo.dll doesn't show any issues. Any ideas?

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• NSInteger differences between CLI and GUI ?

  - by d11wtq

  I've been building a framework and writing unit tests in GHUnit. One of my Framework's accessor methods returns an NSInteger. I assert the expected value in the tests like this: GHAssertEquals(1320, request.port, @"Port number should be 1320"); When running my tests with an AppKit UI based frontend this assertion passes. However, when I run my tests on the command line, it fails with a type-mismatch unless I type-cast my hard-coded 1320 as (NSInteger). What's causing the difference in the way the integer is being interpreted by the compiler? Is xcodebuild on the command line using a different data-type for hard coded integers?

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• Xcode custom project template creates only references to files

  - by user315374

  Hi, I tried to create a custom project template for setting up unit testing. The problem is that when i create a new project based on this template it creates references to the template files : When i edit a file, it changes my template files instead of my actual project files ! When i delete my template, files from my actual project becomes red ! The project template is in : /Developer/Platforms/iPhoneOS.platform/Developer/Library/Xcode/Project Templates/Application/Test-based Application Reading some question on stack overflow i tried to install my template project in /Library/Application Support/Developer/Shared/Xcode/Project Templates But i cannot see my template when i create a new project. Can anybody help ? Thanks, Vincent

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• How to mock a file with EasyMock?

  - by Todd

  Hello, I have recently been introduced to EasyMock and have been asked to develop some unit tests for a FileMonitor class using it. The FileMonitor class is based on a timed event that wakes up and checks for file modification(s) in a defined list of files and directories. I get how to do this using the actual file system, write a test that writes to a file and let the FileMonitor do its thing. So, how do I do this using EasyMock? I just don't get how to have EasyMock mock the file system. Thanks, Todd

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• Running NUnit tests in Visual Studio 2010 with code coverage

  - by adrianbanks

  We have recently upgraded from Visual Studio 2008 to Visual Studio 2010. As part of our code base, we have a very large set of NUnit tests. We would like to be able to run these unit tests within Visual Studio, but with code coverage enabled. We have ReSharper, so can run the tests within Visual Studio, but it does not allow the code coverage tool to do its thing and generate the coverage statistics. Is there any way to make this work, or will we have to convert the tests over to MSTest?

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• Must have JavaScript pro developer tools, libs, utilities and workshop configuration.

  - by WooYek

  This is a followup question to the Pro JavaScript programmer interview questions (with answers). What is considered professional and industrial standard for a professional browser side Java Script developer when it comes to his workshop configuration, and maybe from-concept-to-shipment process? What are the most popular IDE's, utilities and probably libraries, not limited to the free ones. These that can help cut development time (eg. IDE), help with achieve better quality (eg. unit testing tools), reliability and maintainability. I'm looking for a baseline to which I could compare potential candidates based on their ability to keep their tools sharp and workshop efficient (pro's should invest time&money in good tools, right?).

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• How to fire the action of a uibarbuttonitem programatically?

  - by Aruna Herath

  I have created an uibarbuttonitem dynamically and it works properly. I want to fire that uibarbutton item action(click) programatically for unit testing. Even though the code work properly when I log the action of the bar button item in the application code (not on testing code) it gives null. The code I have used is given below. NSLog(@"%@",NSStringFromSelector(barButton.action)); In the testing code I have created a bar button called logout and assign barbutton to that.To click the bar button item programatically I followed the following code. [logout.target performSelector:logout.action]; But it didn't work . I logged the action of logout button and it also gives null. NSLog(@"%@",logout.action); I want to know how to programatically click a uibarbutton item which created dynamically .

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• Silverlight -> WCF -> Database -> problem

  - by Billy

  Hi there, I have some silverlight code that calls a WCF service which then uses the Entity Framework to access the database and return records. Everything runs fine but ... when I replace the Entity Framework code with classic ADO.NET code I get an error: The remote server returned an error: NotFound When I call the ADO.NET code directly with a unit test it returns records fine so it's not a problem with the ADO.NEt code I used fiddler and it seems to say that the service cannot be found with a "500" error. i don't think it's anything to do with the service as the only thing I change is the technology to access the database. Anyone know what i'm missing here?

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• Exclude System.Diagnostics.Contracts When Using PartCover

  - by Alex Jeffery

  I am trying out the .net Code Contracts fro .net 3.5 I have some unit test that I am running PartCover over to calculate the code coverage. PartCover keeps including the System.Diagnostics.Contracts in my report. Here are the rules I am using to include MyProject and exclude everything else. <Rule>+[MyProject.DomainModel]*</Rule> <Rule>-[System]*</Rule> <Rule>-[System.Diagnostics]*</Rule> <Rule>-[System.Diagnostics.Contracts]*</Rule> Any suggestions?

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• Avoid painting over nested controls

  - by Cobus Kruger

  I am writing a toolbar-style control and use the ThemeServices unit to paint the background required by the toolbar. Like so: ThemeServices.DrawElement(Canvas.Handle, ThemeServices.GetElementDetails(trRebarRoot), ARect); I then drop child controls onto the toolbar and voila - instant toolbar. Except that every now and again I notice that the nested (child) controls don't repaint as well. So my control paints its background and the child controls disappear until you move the mouse over them. Some of the edit controls show their client area (no border) and some of them are just gone altogether. This happens mostly when I place a window from another application over the toolbar and move it away. I keep thinking this has to be very easy to cure, that perhaps I'm somehow preventing the paint message from reaching the child controls, or missing an override but I have been unable to figure it out.

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• Is this an F# quotations bug?

  - by ControlFlow

  [<ReflectedDefinition>] let rec x = (fun() -> x + "abc") () The sample code with the recursive value above produces the following F# compiler error: error FS0432: [<ReflectedDefinition>] terms cannot contain uses of the prefix splice operator '%' I can't see any slicing operator usage in the code above, looks like a bug... :) Looks like this is the problem with the quotation via ReflectedDefinitionAttribute only, normal quotation works well: let quotation = <@ let rec x = (fun() -> x + "abc") () in x @> produces expected result with the hidden Lazy.create and Lazy.force usages: val quotation : Quotations.Expr<string> = LetRecursive ([(x, Lambda (unitVar, Application (Lambda (unitVar0, Call (None, String op_Addition[String,String,String](String, String), [Call (None, String Force[String](Lazy`1[System.String]), [x]), Value ("abc")])), Value (<null>)))), (x, Call (None, Lazy`1[String] Create[String](FSharpFunc`2[Unit,String]), [x])), (x, Call (None, String Force[String](Lazy`1[String]), [x]))], x) So the question is: is this an F# compiler bug or not?

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• How to change line thickness in iText?

  - by drasto

  I'm drawing images to pdf using Java framework iText. I need to draw lines of specified width. There is a method setLineWidth(float width) in class PdfContentByte that should change it. However no matter what value I pass as its parameter the lines drawn are always extra thin. There is following line in javadoc of setLineWidth: The line width specifies the thickness of the line used to stroke a path and is measured in user space units. I don't know what is "space unit". Everything else in iText seems to be measured in point(around 1/72 inch). I cant find any reference to what are those "space units" and how to change them. code: to.setLineWidth(thickness); to.moveTo(x, y); to.lineTo(x + 100, y + 100); Variable to contains instance of PdfContentByte.

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• What some good books on software testing/quality?

  - by mjh2007

  I'm looking for a good book on software quality. It would be helpful if the book covered: The software development process (requirements, design, coding, testing, maintenance) Testing roles (who performs each step in the process) Testing methods (white box and black box) Testing levels (unit testing, integration testing, etc) Testing process (Agile, waterfall, spiral) Testing tools (simulators, fixtures, and reporting software) Testing of embedded systems The goal here is to find an easy to read book that summarizes the best practices for ensuring software quality in an embedded system. It seems most texts cover the testing of application software where it is simpler to generate automated test cases or run a debugger. A book that provided solutions for improving quality in a system where the tests must be performed manually and therefore minimized would be ideal.

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• SSRS 2008 export to MS Word A4 issue

  - by Knut Ivar

  I have a simple report maid in bids 2008 and deployed to a ssrs2008 server. it has this report properties: page unit : Centimeters page size : Orientasion: Landscape paper sise: A4 width : 29,7cm Height: 21cm all margins ar 2,5cm Showing and printing this report works fine making it perfekt on a A4 paper. exporting to difrent formats works also grate exept the format i made the report for. The word files ither end up whit an letter paper size or a A3 size. Do enyone have a solution for this problem?

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