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• Does ActiveRecord make Ruby on Rails code hard to test?

  - by Erik Öjebo

  I've spent most of my time in statically typed languages (primarily C#). I have some bad experiences with the Active Record pattern and unit testing, because of the static methods and the mix of entities and data access code. Since the Ruby community probably is the most test driven of the communities out there, and the Rails ActiveRecord seems popular, there must be some way of combining TDD and ActiveRecord based code in Ruby on Rails. I would guess that the problem goes away in dynamic languages, somehow, but I don't see how. So, what's the trick?

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• How can I test to see if a class contains a particular attribute?

  - by BryanWheelock

  How can I test to see if a class contains a particular attribute? In [14]: user = User.objects.get(pk=2) In [18]: user.__dict__ Out[18]: {'date_joined': datetime.datetime(2010, 3, 17, 15, 20, 45), 'email': u'[email protected]', 'first_name': u'', 'id': 2L, 'is_active': 1, 'is_staff': 0, 'is_superuser': 0, 'last_login': datetime.datetime(2010, 3, 17, 16, 15, 35), 'last_name': u'', 'password': u'sha1$44a2055f5', 'username': u'DickCheney'} In [25]: hasattr(user, 'username') Out[25]: True In [26]: hasattr(User, 'username') Out[26]: False I'm having a weird bug where more attributes are showing up than I actually define. I want to conditionally stop this. e.g. if not hasattr(User, 'karma'): User.add_to_class('karma', models.PositiveIntegerField(default=1))

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• How do you unit test web page authorization using ASP.NET MVC?

  - by Kevin Pang

  Let's say you have a profile page that can only be accessed by the owner of that profile. This profile page is located at: User/Profile/{userID} Now, I imagine in order to prevent access to this page by other users, you could structure your UserController class's Profile function to check the current session's identity: HttpContext.Current.User.Identity.Name If the id matches the one in the url, then you proceed. Otherwise you redirect to some sort of error page. My question is how do you unit test something like this? I'm guessing that you need to use some sort of dependency injection instead of the HttpContext in the controller to do the check on, but I am unclear what the best way to do that is. Any advice would be helpful.

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• 'sript/console test' with spork and rspec not loading the whole environment?

  - by TheDeeno

  I'm trying to load up console to interact with some of my rspec mocking helpers. I expected that running script/console test would load an env similar to when I run spec. However, this doesn't appear to be the case. It looks like spec_helper is never loaded. Or, if it is, it's not actually running through the logic because spork has polluted it a bit. In short, is there a quick and easy way to get an interactive rspec party going?

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• How to test a lamda expression var query result is null?

  - by mike

  var query = from emp in dbEmp.Employees join dept in dbEmp.Departments on emp.DeptID equals dept.DeptID where dept.DepartmentName.Contains(this.TextBox1.Text) select new { EmpID = emp.EmpID, EmpName = emp.EmpName, Age = emp.Age, Address = emp.Address, DeptName = dept.DepartmentName }; if (query==null) Label1.Text = "no results match your search"; GridView1.DataSource = query; GridView1.DataBind(); Everything works in the right way, but the label doesn't show the message when query result returns null. The label can show without condition(querry==null). So how to test if a var query result returns nothing? Thanks

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• Does MS Test provide a default value equals comparison?

  - by fearofawhackplanet

  I want to test for example int orderId = myRepository.SubmitOrder(orderA); orderB = myRepository.GetOrder(orderId); Assert.AreEqual(orderA, orderB); // fail Obviously I need a value comparison here, but I don't want to have to provide an overridden Equals implementation for all of my classes purely for the sake of testing (it wouldn't be of any use in the rest of the app). Is there a provided generic method that just checks every field using reflection? Or if not, it is possible to write my own?

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• Clever ways to better test GPS code using only the iPhone simulator?

  - by Patty

  I've been playing around with the iPhone SDK, using MapKit and Core Location. What are some of the tricks you can use to better test things... while still on the simulator (long before I have to try it out on my iPhone). Is there a way to use NSTimer and regularly get 'pretend' values for location, heading, speed, etc? The simulator only giving 1 location... and no movement... really limits its 'testing' usefulness.

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• Visual Studio web tests: Can a coded webtest be run through the Web Test Editor run view?

  - by Frank Rosario

  Hello, Full disclosure, I'm new to Visual Studio Web Tests and coding for them. I've written a webtest; coded in VB; it runs great. Our QA engineer wants to use this script for performance testing; but he wants the nice GUI that comes when you build a WebTest with the VS WebTest Editor and run it. Is there a way to run a coded webtest through this view? He wants to be able to view each test as it runs to see which pages are having issues, but within the GUI he's used to. Alternatively, I know I could just code something that writes out to a log file; but before I go with that solution; I just wanted to see if this is possible. Any constructive input is greatly appreciated.

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• 'script/console test' with spork and rspec not loading the whole environment?

  - by TheDeeno

  I'm trying to load up console to interact with some of my rspec mocking helpers. I expected that running script/console test would load an env similar to when I run spec. However, this doesn't appear to be the case. It looks like spec_helper is never loaded. Or, if it is, it's not actually running through the logic because spork has polluted it a bit. In short, is there a quick and easy way to get an interactive rspec party going?

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• How do I test if a variable is a number in bash?

  - by Flávio Amieiro

  I just can't figure out how do I make sure an argument passed to my script is a number or not. All I want to do is something like this: test *isnumber* $1 && VAR=$1 || echo "need a number" Any help? UPDATE: I managed (whit Charles' help) to do it, but I'm not yet sure it's the best way to do that (even though it worked on my tests). This is how it ended up: [[ $1 =~ "^[0-9]+$" ]] && echo "numero" && exit 0 || echo "nao numero" && exit 1

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• Test iPhone In App Purchase without uploading binary (i.e. without bundle ID)

  - by psychotik

  I've created a new app but not uploaded a binary (not ready for review yet). However, I want to test in-app purchases. The documentation seems to state that a bundle ID is required to create an in-app purchase product. Is there any way to specify this bundle ID for creating the in-app purchase product on iTunes Connect without uploading the app binary in a way that won't cause problems when the actual binary is uploaded? What if the eventually uploaded binary has a different bundleID than the use created for testing - does it effectively invalidate the in-app purchase product?

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• Test of procedure is fine but when called from a menu gives uninitialized errors. C

  - by Delfic

  The language is portuguese, but I think you get the picture. My main calls only the menu function (the function in comment is the test which works). In the menu i introduce the option 1 which calls the same function. But there's something wrong. If i test it solely on the input: (1/1)x^2 //it reads the polinomyal (2/1) //reads the rational and returns 4 (you can guess what it does, calculates the value of an instace of x over a rational) My polinomyals are linear linked lists with a coeficient (rational) and a degree (int) int main () { menu_interactivo (); // instanciacao (); return 0; } void menu_interactivo(void) { int i; do{ printf("1. Instanciacao de um polinomio com um escalar\n"); printf("2. Multiplicacao de um polinomio por um escalar\n"); printf("3. Soma de dois polinomios\n"); printf("4. Multiplicacao de dois polinomios\n"); printf("5. Divisao de dois polinomios\n"); printf("0. Sair\n"); scanf ("%d", &i); switch (i) { case 0: exit(0); break; case 1: instanciacao (); break; case 2: multiplicacao_esc (); break; case 3: somar_pol (); break; case 4: multiplicacao_pol (); break; case 5: divisao_pol (); break; default:printf("O numero introduzido nao e valido!\n"); } } while (i != 0); } When i call it with the menu, with the same input, it does not stop reading the polinomyal (I know this because it does not ask me for the rational as on the other example) I've run it with valgrind --track-origins=yes returning the following: ==17482== Memcheck, a memory error detector ==17482== Copyright (C) 2002-2009, and GNU GPL'd, by Julian Seward et al. ==17482== Using Valgrind-3.5.0 and LibVEX; rerun with -h for copyright info ==17482== Command: ./teste ==17482== 1. Instanciacao de um polinomio com um escalar 2. Multiplicacao de um polinomio por um escalar 3. Soma de dois polinomios 4. Multiplicacao de dois polinomios 5. Divisao de dois polinomios 0. Sair 1 Introduza um polinomio na forma (n0/d0)x^e0 + (n1/d1)x^e1 + ... + (nk/dk)^ek, com ei > e(i+1): (1/1)x^2 ==17482== Conditional jump or move depends on uninitialised value(s) ==17482== at 0x401126: simplifica_f (fraccoes.c:53) ==17482== by 0x4010CB: le_f (fraccoes.c:30) ==17482== by 0x400CDA: le_pol (polinomios.c:156) ==17482== by 0x400817: instanciacao (t4.c:14) ==17482== by 0x40098C: menu_interactivo (t4.c:68) ==17482== by 0x4009BF: main (t4.c:86) ==17482== Uninitialised value was created by a stack allocation ==17482== at 0x401048: le_f (fraccoes.c:19) ==17482== ==17482== Conditional jump or move depends on uninitialised value(s) ==17482== at 0x400D03: le_pol (polinomios.c:163) ==17482== by 0x400817: instanciacao (t4.c:14) ==17482== by 0x40098C: menu_interactivo (t4.c:68) ==17482== by 0x4009BF: main (t4.c:86) ==17482== Uninitialised value was created by a stack allocation ==17482== at 0x401048: le_f (fraccoes.c:19) ==17482== I will now give you the functions which are called void le_pol (pol *p) { fraccao f; int e; char c; printf ("Introduza um polinomio na forma (n0/d0)x^e0 + (n1/d1)x^e1 + ... + (nk/dk)^ek,\n"); printf("com ei > e(i+1):\n"); *p = NULL; do { le_f (&f); getchar(); getchar(); scanf ("%d", &e); if (f.n != 0) *p = add (*p, f, e); c = getchar (); if (c != '\n') { getchar(); getchar(); } } while (c != '\n'); } void instanciacao (void) { pol p1; fraccao f; le_pol (&p1); printf ("Insira uma fraccao na forma (n/d):\n"); le_f (&f); escreve_f(inst_esc_pol(p1, f)); } void le_f (fraccao *f) { int n, d; getchar (); scanf ("%d", &n); getchar (); scanf ("%d", &d); getchar (); assert (d != 0); *f = simplifica_f(cria_f(n, d)); } simplifica_f simplifies a rational and cria_f creates a rationa given the numerator and the denominator Can someone help me please? Thanks in advance. If you want me to provide some tests, just post it. See ya.

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• Test if current page is inside a shadowbox? (so i can close the shadowbox and reopen that page in t

  - by Max Williams

  Hi all I have a couple of pages in my site which open in a shadowbox window rather than the main window. My problem is that if the user session expires, then the user clicks on one of the links that open in a shadowbox, they are redirected to the login page INSIDE THE SHADOWBOX, which i don't want. I've been trying to think of the best way to handle this - one way i thought of, which seems a bit clumsy tbh, was on the login page to test if we're in a shadowbox, and if we are then close it and redirect the parent window to the login page. a) does this seem like a sensible plan? I added the following to my login page, which works: $(document).ready(function(){ if(window.parent.location != window.location){ window.parent.location.href = window.location; } } but i have to wait for the shadowbox to finish loading the page and then redirect. So it's working but like i say a bit clumsy. Is there a nicer way? grateful for any advice - max

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• How can I programatically test which CSS elements match my XHTML?

  - by Shawn Lauzon

  I have an application which generates XHTML documents which are styled with (mostly) static CSS. I'm currently using XPath and Hamcrest (Java) to verify that the documents are constructed correctly. However, I also need to verify that the correct CSS properties are matched. For example, I would like a test like this: Given XHTML element Foo, verify that the property "text-transform:uppercase" is applied. Ideally, I would like a Java framework that provides this. I've looked a bit at Selenium, but I don't see this type of functionality. Thanks ...

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• Why is my Extension Method not showing up in my test class?

  - by Robert Harvey

  I created an extension method called HasContentPermission on the System.Security.Principal.IIdentity interface: namespace System.Security.Principal { public static bool HasContentPermission (this IIdentity itentity, int contentID) { // I do stuff here return result; } } And I call it like this: bool hasPermission = User.Identity.HasPermission(contentID); Works like a charm. Now I want to unit test it. To do that, all I really need to do is call the extension method directly, so: using System.Security.Principal; namespace MyUnitTests { [TestMethod] public void HasContentPermission_PermissionRecordExists_ReturnsTrue() { IIdentity identity; bool result = identity.HasContentPermission(... But HasContentPermission won't intellisense. I tried creating a stub class that inherits from IIdentity, but that didn't work either. Why? Or am I going about this the wrong way?

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• CakePHP. How can i make a model test in a table with another primary key?

  - by Marcelo

  I have this table CREATE TABLE myexamples.problems ( id INT, name VARCHAR(45) NULL , pk_id INT AUTO_INCREMENT PRIMARY KEY ); But when I try test a model in cakephp, it fails because the table has two autoincrement attributes. The following query CREATE TABLE `test_suite_problems` ( `id` int(11) NOT NULL AUTO_INCREMENT, `name` varchar(45) DEFAULT NULL, `pk_id` int(11) NOT NULL AUTO_INCREMENT, PRIMARY KEY (`pk_id`) ) DEFAULT CHARSET=latin1, COLLATE=latin1_swedish_ci, ENGINE=InnoDB; raise this error: "1075: Incorrect table definition; there can be only one auto column and it must be defined as a key" I have in the model class <?php class Problem extends AppModel { var $name = 'Problem'; var $displayField = 'name'; var $primaryKey='problems'; } ?> But I don't know how to make the field ID not having an autoincrement attribute, and I can't change the table structure.

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• Do I have to create a static library to test my application?

  - by Christopher Gateley

  I'm just getting started with TDD and am curious as to what approaches others take to run their tests. For reference, I am using the google testing framework, but I believe the question is applicable to most other testing frameworks and to languages other than C/C++. My general approach so far has been to do either one of three things: Write the majority of the application in a static library, then create two executables. One executable is the application itself, while the other is the test runner with all of the tests. Both link to the static library. Embed the testing code directly into the application itself, and enable or disable the testing code using compiler flags. This is probably the best approach I've used so far, but clutters up the code a bit. Embed the testing code directly into the application itself, and, given certain command-line switches either run the application itself or run the tests embedded in the application. None of these solutions are particularly elegant... How do you do it?

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• Django: way to test what class a generic relation content_object is?

  - by bitbutter

  In my project I have a class, NewsItem. Instances of NewsItem act like a wrapper. They can be associated with either an ArtWork instance, or an Announcement instance. Here's how the NewsItem model looks: class NewsItem(models.Model): content_type = models.ForeignKey(ContentType) object_id = models.PositiveIntegerField() content_object = generic.GenericForeignKey('content_type', 'object_id') date = models.DateTimeField(default=datetime.datetime.now,) class Meta: ordering = ('-date',) def __unicode__(self): return (self.title()) In a template I'm dealing with a NewsItem instance, and would like to output a certain bunch of html it it's 'wrapping' an Artwork instance, and a different bunch of html if it's wrapping an Announcement instance. Could someone explain how I can write a conditional to test for this? My first naive try looked like this: {% if news_item.content_object.type=='Artwork' %}do this{% else %}do that{% endif %}

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• Windows Structured Exception Handling: simple test program will not compile.

  - by Jon

  #include <windows.h> int main() { int* i = (int*)malloc(sizeof(int)); *i = 5; __try { free(i); free(i); } __except { return -1; } return 0; } I am trying to learn more about windows SEH. My first test program is giving me some real trouble. I have looked at the msdn documentation and I am still not really sure what I have wrong. I am getting the following errors when I try to compile this program: error C2059: syntax error : '{' error C2143: syntax error : missing ';' before '{' both on line 15. Thanks.

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• How do I test how my client program will react to a web server error?

  - by Brad Bruce

  I have a client program based on LibCurl. I have run into a situation where on some occasions a program on the server runs longer than the configured IIS timeout. IIS then terminates the program and returns a 502 error status to the client. I have added code to the client to capture this issue. Now, I need to find a way to prove that the change will work. I haven't been able to reliably reproduce the issue, so don't have a good test case. Any suggestions?

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• How do I test if a property exists on a object before reading its value?

  - by Jeremy Rudd

  I'm attempting to read a property on a series of Sprites. This property may or may not be present on these objects, and may not even be declared, worse than being null. My code is: if (child["readable"] == true){ // this Sprite is activated for reading } And so Flash shows me: Error #1069: Property selectable not found on flash.display.Sprite and there is no default value. Is there a way to test if a property exists before reading its value? Something like: if (child.isProperty("readable") && child["readable"] == true){ // this Sprite is activated for reading }

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• I want to use the fleximage gem and s3 for storage, but don't want dev/qa/test env's to use s3

  - by Kevin Bedell

  I have a rails app that I'm going to host on engineyard and want to store image files on s3. But I don't know if I want all developer machines to beusing s3 for storage of all our test and dev images. Maybe it's not an issue -- but it seems like a waste to have everyone storing all our images in s3. I've heard of some ppl who store images on s3 'hacking' dev environments to store images locally on the file system -- and then using s3 in prod only. What are other people doing?

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• In an Android test, how to check that a View is shown?

  - by Jan Zankowski

  Hello, I'm writing a UI test case (using ActivityUnitTestCase) and would like to check if at a given time a View subclass is visible to the user. I've found the View#isShown() method, which claims to do exactly this - checking the visibility field of this element and all its parents - but somehow it always returns "false" for all the elements. I'll be grateful for some help. If it makes it easier, I can paste some code. Also, I found ViewAsserts#assertOnScreen(View origin, View view) but it doesn't seem to do the right thing either - always returns true. Am I perhaps calling it wrong: assertOnScreen(viewImTesting.getRootView(), viewImTesting)? Thanks, Jan

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• Is registering your app through iTunesConnect required to test GameKit integration?

  - by Dan K.

  I'd like to add GameKit integration to my app. I was hoping to be able to evaluate how it works. From the docs I found, it seems that I have to register my app through iTunes Connect first. I'm new to the iOS development front, so maybe I'm wrong here, but it seems like registering your app in iTunes Connect is a pretty final step, and I'd like to be able to test things before going through that step. So, I guess I have two questions: 1.) Do I have to register my app with iTunes Connect before being able to use GameKit? 2.) Am I being crazy about not wanting to register with iTunes Connect yet? Should I stop worrying and just do it?

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• Is there a efficient way to do multiple test cases in c?

  - by Ahmed Abdelaal

  I use MS Visual Studio and I am new to C++, so I am just wondering if there is an faster more efficient way to do multiple test cases instead of keep clicking CTRL+F5 and re-opening the console many times. Like for example if I have this code #include <iostream> using namespace std; void main () { int x; cout<<"Enter a number"<<endl; cin>>x; cout<<x*2<<endl; } Is there a way I could try different values of x at once and getting the results together? Thanks

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