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  • How to keep your unit tests simple and isolated and still guarantee DDD invariants ?

    - by ian31
    DDD recommends that the domain objects should be in a valid state at any time. Aggregate roots are responsible for guaranteeing the invariants and Factories for assembling objects with all the required parts so that they are initialized in a valid state. However this seems to complicate the task of creating simple, isolated unit tests a lot. Let's assume we have a BookRepository that contains Books. A Book has : an Author a Category a list of Bookstores you can find the book in These are required attributes : a book has to have an author, a category and at least a book store you can buy the book from. There's likely to be a BookFactory since it is quite a complex object, and the Factory will initialize the Book with at least all the mentioned attributes. Now we want to unit test a method of the BookRepository that returns all the Books. To test if the method returns the books, we have to set up a test context (the Arrange step in AAA terms) where some Books are already in the Repository. If the only tool at our disposal to create Book objects is the Factory, the unit test now also uses and is dependent on the Factory and inderectly on Category, Author and Store since we need those objects to build up a Book and then place it in the test context. Would you consider this is a dependency in the same way that in a Service unit test we would be dependent on, say, a Repository that the Service would call ? How would you solve the problem of having to re-create a whole cluster of objects in order to be able to test a simple thing ? How would you break that dependency and get rid of all these attributes we don't need in our test ? By using mocks or stubs ? If you mock up things a Repository contains, what kind of mock/stubs would you use as opposed to when you mock up something the object under test talks to or consumes ?

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  • unit test for proxy checking

    - by zubin71
    Proxy configuration of a machine can be easily fetched using def check_proxy(): import urllib2 http_proxy = urllib2.getproxies().get('http') I need to write a test for the above written function. In order to do that I need to:- Set the system-wide proxy to an invalid URL during the test(sounds like a bad idea). Supply an invalid URL to http_proxy. How can I achieve either of the above?

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  • Why do we need mocking frameworks like Easymock , JMock or Mockito?

    - by Praneeth
    Hi, We use hand written stubs in our unit tests and I'm exploring the need for a Mock framework like EasyMock or Mockito in our project. I do not find a compelling reason for switching to Mocking frameworks from hand written stubs. Can anyone please answer why one would opt for mocking frameworks when they are already doing unit tests using hand written mocks/stubs. Thanks

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  • Test if string is URL encoded in PHP

    - by Psytronic
    Hey guys, I've looked through the PHP Docs and can't see anything to do with this, so how can I test if a string is URL encoded? Is it better to search the string for characters which would be encoded, which aren't, and if any exist then its not encoded, or use something like this which I've made function is_urlEncoded($string){ $test_string = $string; while(urldecode($test_string) != $test_string){ $test_string = urldecode($test_string); } return (urlencode($test_string) == $string)?True:False; } $t = "Hello World how are you?"; if(is_urlEncoded($sreq)){ print "Was Encoded.\n"; }else{ print "Not Encoded.\n"; print "Should be ".urlencode($sreq)."\n"; } Which works, however not in instances where this might occur $t = "Hello%2BWorld%2B%253E%2Bhow%2Bare%2Byou%253F"; I.e. where the string has been doubly encoded, or maybe this string $t = "Hello+World%2B%253E%2Bhow%2Bare%2Byou%253F"; I.e. where most has been doubly encoded, except for one space. (Yes I don't know when this string would ever occur, but you never know)

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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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  • How to make the value of one select box drive the options of a second select box

    - by Ben McCormack
    I want to make an HTML form with 2 select boxes. The selected option in the first select box should drive the options in the second select box. I would like to solve this dynamically on the client (using javascript or jQuery) rather than having to submit data to the server. For example, let's say I have the following Menu Categories and Menu Items: Sandwiches Turkey Ham Bacon Sides Mac 'n Cheese Mashed Potatoes Drinks Coca Cola Sprite Sweetwater 420 I would have two select boxes, named Menu Category and Items, respectively. When the user selects Sandwiches in the Menu Category box, the options in the Items box will only show Sandwich options. I'm stuck as how I might approach this. Once I filter out the 2nd list one time, how do I "find" the list options once I change my menu category in the 1st list? Also, if I'm thinking in SQL, I would have a key in the 1st box that would be used to link to the data in the 2nd box. However, I can't see where I have room for a "key" element in the 2nd box. How could this problem be solved with a combination of jQuery or plain javascript?

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  • AngularJS service returning promise unit test gives error No more request expected

    - by softweave
    I want to test a service (Bar) that invokes another service (Foo) and returns a promise. The test is currently failing with this error: Error: Unexpected request: GET foo.json No more request expected Here are the service definitions: // Foo service returns new objects having get function returning a promise angular.module('foo', []). factory('Foo', ['$http', function ($http) { function FooFactory(config) { var Foo = function (config) { angular.extend(this, config); }; Foo.prototype = { get: function (url, params, successFn, errorFn) { successFn = successFn || function (response) {}; errorFn = errorFn || function (response) {}; return $http.get(url, {}).then(successFn, errorFn); } }; return new Foo(config); }; return FooFactory; }]); // Bar service uses Foo service angular.module('bar', ['foo']). factory('Bar', ['Foo', function (Foo) { var foo = Foo(); return { getCurrentTime: function () { return foo.get('foo.json', {}, function (response) { return Date.parse(response.data.now); }); } }; }]); Here is my current test: 'use strict'; describe('bar tests', function () { var currentTime, currentTimeInMs, $q, $rootScope, mockFoo, mockFooFactory, Foo, Bar, now; currentTime = "March 26, 2014 13:10 UTC"; currentTimeInMs = Date.parse(currentTime); beforeEach(function () { // stub out enough of Foo to satisfy Bar service: // create mock object with function get: function(url, params, successFn, errorFn) // that promises to return a response with this property // { data: { now: "March 26, 2014 13:10 UTC" }}) mockFoo = { get: function (url, params, successFn, errorFn) { successFn = successFn || function (response) {}; errorFn = errorFn || function (response) {}; // setup deferred promise var deferred = $q.defer(); deferred.resolve({data: { now: currentTime }}); return (deferred.promise).then(successFn, errorFn); } }; // create mock Foo service mockFooFactory = function(config) { return mockFoo; }; module(function ($provide) { $provide.value('Foo', mockFooFactory); }); module('bar'); inject(function (_$q_, _$rootScope_, _Foo_, _Bar_) { $q = _$q_; $rootScope = _$rootScope_; Foo = _Foo_; Bar = _Bar_; }); }); it('getCurrentTime should return currentTimeInMs', function () { Bar.getCurrentTime().then(function (serverCurrentTime) { now = serverCurrentTime; }); $rootScope.$apply(); // resolve Bar promise expect(now).toEqual(currentTimeInMs); }); }); The error is being thrown at $rootScope.$apply(). I also tried using $rootScope.$digest(), but it gives the same error. Thanks in advance for any insight you can give me.

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  • WPF: Why all the love for the Grid control?

    - by Eduardo Molteni
    Seen various examples of WPF applications I've seen the use of the Grid control for almost anything, even simplest things with only 1 column or row. Also, the WPF templates start with an empty grid. For me, using StackPanel or DockPanel is less verbose and are better for maintenance (think adding a row later and having to add +1 to all the other rows) Why is Grid better or what I am missing?

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  • Android: Error trying to edit button text after thread sleep

    - by Vass
    (programming Android in Eclipse) I am trying to set up a delay in changing the text in a button. I am getting errors only after there is a delay and the text needs to be changed. Here is the simplified code without a while loop: final Button button_target = (Button) findViewById(R.id.button_target); Thread textChange = new Thread(new Runnable() { public void run(){ button_target.setText("fog"); try{ Thread.sleep(3000); }catch(InterruptedException e){} } }); textChange.start(); And now here is the code where a change of text on the button is required after the sleep which now causes and error and exit (forced): final Button button_target = (Button) findViewById(R.id.button_target); Thread textChange = new Thread(new Runnable() { public void run(){ button_target.setText("cat"); try{ Thread.sleep(3000); }catch(InterruptedException e){} button_target.setText("dog"); } }); textChange.start(); what am I doing to cause the error? Is there another method that I should do to be able to invoke a sleep or delay to the thread so that a text change operation can be performed? (the actual code has a while loop but I believe this form puts the error in highlight)

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  • Extraction Event

    - by Anicho
    So I have the following code: public override void Extract(object sender, ExtractionEventArgs e) { if (e.Response.HtmlDocument != null) { var myParam = e.Request.QueryStringParameters.Where(parameter => parameter.Name == QueryName).Select(parameter => parameter.Value).Distinct(); myParam. // add the extracted value to the web performance test context e.WebTest.Context.Add(this.ContextParameterName, myParam.ToString()); e.Success = true; return; } // If the extraction fails, set the error text that the user sees e.Success = false; e.Message = String.Format(CultureInfo.CurrentCulture, "Not Found: {0}", QueryName); } It's returning: System.Linq.Enumerable+<DistinctItem>d_81`1[system.string] I am expecting something along the lines of: 0152-1231-1231-123d My question is how do I extract the querystring's actual value from extractioneventargs. They say it's possible, but I have no idea.

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  • How to assert/unit-test servers JSON response?

    - by shazax
    My current project uses JSON as data interchange format. Both Front-end and Back-end team agree upon a JSON structure before start integrating a service. At times due to un-notified changes in JSON structure by back-end team; it breaks the front-end code. Is there any external library that we could use to compare a mock JSON (fixture) with servers JSON response. Basically it should assert the whole JSON object and should throw an error if there is any violation in servers JSON format. Additional info: App is built on JQuery consuming REST JSON services.

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  • ASP.NET MVC - How to Unit Test boundaries in the Repository pattern?

    - by JK
    Given a basic repository interface: public interface IPersonRepository { void AddPerson(Person person); List<Person> GetAllPeople(); } With a basic implementation: public class PersonRepository: IPersonRepository { public void AddPerson(Person person) { ObjectContext.AddObject(person); } public List<Person> GetAllPeople() { return ObjectSet.AsQueryable().ToList(); } } How can you unit test this in a meaningful way? Since it crosses the boundary and physically updates and reads from the database, thats not a unit test, its an integration test. Or is it wrong to want to unit test this in the first place? Should I only have integration tests on the repository? I've been googling the subject and blogs often say to make a stub that implements the IRepository: public class PersonRepositoryTestStub: IPersonRepository { private List<Person> people = new List<Person>(); public void AddPerson(Person person) { people.Add(person); } public List<Person> GetAllPeople() { return people; } } But that doesnt unit test PersonRepository, it tests the implementation of PersonRepositoryTestStub (not very helpful).

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  • How do I change the base class at runtime in C#?

    - by MatthewMartin
    I may be working on mission impossible here, but I seem to be getting close. I want to extend a ASP.NET control, and I want my code to be unit testable. Also, I'd like to be able to fake behaviors of a real Label (namely things like ID generation, etc), which a real Label can't do in an nUnit host. Here a working example that makes assertions on something that depends on a real base class and something that doesn't-- in a more realistic unit test, the test would depend on both --i.e. an ID existing and some custom behavior. Anyhow the code says it better than I can: public class LabelWrapper : Label //Runtime //public class LabelWrapper : FakeLabel //Unit Test time { private readonly LabelLogic logic= new LabelLogic(); public override string Text { get { return logic.ProcessGetText(base.Text); } set { base.Text=logic.ProcessSetText(value); } } } //Ugh, now I have to test FakeLabelWrapper public class FakeLabelWrapper : FakeLabel //Unit Test time { private readonly LabelLogic logic= new LabelLogic(); public override string Text { get { return logic.ProcessGetText(base.Text); } set { base.Text=logic.ProcessSetText(value); } } } [TestFixture] public class UnitTest { [Test] public void Test() { //Wish this was LabelWrapper label = new LabelWrapper(new FakeBase()) LabelWrapper label = new LabelWrapper(); //FakeLabelWrapper label = new FakeLabelWrapper(); label.Text = "ToUpper"; Assert.AreEqual("TOUPPER",label.Text); StringWriter stringWriter = new StringWriter(); HtmlTextWriter writer = new HtmlTextWriter(stringWriter); label.RenderControl(writer); Assert.AreEqual(1,label.ID); Assert.AreEqual("<span>TOUPPER</span>", stringWriter.ToString()); } } public class FakeLabel { virtual public string Text { get; set; } public void RenderControl(TextWriter writer) { writer.Write("<span>" + Text + "</span>"); } } //System Under Test internal class LabelLogic { internal string ProcessGetText(string value) { return value.ToUpper(); } internal string ProcessSetText(string value) { return value.ToUpper(); } }

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  • functional test for rails controller private method

    - by mohit
    I have a private method in my controller. which is used for some database update. this method i am calling from another controller method. and it works fine. But when i am trying to write a test case for that method then It is tripping on accessing (session variable and params) in my functional all other methods are working fine the problem is only with private method? In my setup method in functional test, I am setting session also.?

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  • Stub web calls in Scala

    - by Dennis Laumen
    I'm currently writing a wrapper of the Spotify Metadata API to learn Scala. Everything's fine and dandy but I'd like to unit test the code. To properly do this I'll need to stub the Spotify API and get consistent return values (stuff like popularity of tracks changes very frequently). Does anybody know how to stub web calls in Scala, the JVM in general or by using some external tool I could hook up into my Maven setup? PS I'm basically looking for something like Ruby's FakeWeb... Thanks in advance!

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  • What's a good unit test framework for Common Lisp projects?

    - by Lorenzo V.
    I need to write a unit test suite for a project I am developing in my spare time. Being a CL newbie I was overwhelmed by the amount of choices for a CL implementation, I spent quite some time to choose one. Now I am facing exactly the same thing with unit test frameworks. A quick glance at http://www.cliki.net/test%20framework shows 20 unit test frameworks! Choice is good but for a novice like me this can be a bit confusing and given the number of frameworks it would be painful to try them all. I would like to use a framework which: Is reasonably well maintained Easy to use but with some degree of flexibility Offers some sort of integration with Emacs (or it is possible to easily integrate it with Emacs) Integration with git post-commit hooks Integration with a continous integration system (such as buildbot) What are your experiences in this field?

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  • Use of GORM methods in Integration test

    - by canotto90
    I'm trying to use gorm find method on my domain class, inside of an Spock Integration Spec. My code: class myDomainClassSpec extends IntegrationSpec{ ... def 'my test'() { when: ... then: MyDomainClass.find { id == 1 } } ... } This fails, throwing: groovy.lang.MissingPropertyException: No such property: id for class: grails.gorm.DetachedCriteria If instead I code: MyDomainClass.findAll().find { id == 1 } it works. Any ideas??

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  • Selecting a date value from a dynamically generated listbox.

    - by ziggy
    Hi All, I have a listbox whose values are generated dynamically. The list box contains months and years and when generated looks like this. <select name="arr_dtm_mon_year" tabindex="150" class="input"> <option value=""></option> <option value="NOV 09">Nov 09</option> <option value="DEC 09">Dec 09</option> <option value="JAN 10">Jan 10</option> <option value="FEB 10">Feb 10</option> <option value="MAR 10">Mar 10</option> <option value="APR 10">Apr 10</option> <option value="MAY 10">May 10</option> <option value="JUN 10" selected>Jun 10</option> <option value="JUL 10">Jul 10</option> <option value="AUG 10">Aug 10</option> <option value="SEP 10">Sep 10</option> <option value="OCT 10">Oct 10</option> </select> The element in the listbox that is by default selected is the current month. When i use selenium IDE to select from this listbox it works fine. Here are example commands i use to select from the listbox. <tr> <td>select</td> <td>arr_dtm_mon_year</td> <td>label=Oct 10</td> </tr> <tr> <td>select</td> <td>arr_dtm_mon_year</td> <td>label=May 10</td> </tr> Now the problem i have is the values in the listbox is dynamically generated. In the above example i selected the option for "May 10". The values that are generated is a list of all previous six months and a list of all future six months. This basically means that if i rerun the test 6 months from now "May 10" will not be available from the list. Is it possible to select the value dynamically. For example can i first calculate the current month and select the value with that is current month + 1 (i.e. next month). And also how can i build the value to be selected after i have determined what the next month is. Any help will be greatly appreciated.

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  • Should the code being tested compile to a DLL or an executable file?

    - by uriDium
    I have a solution with two projects. One for project for the production code and another project for the unit tests. I did this as per the suggestions I got here from SO. I noticed that in the Debug Folder that it includes the production code in executable form. I used NUnit to run the tests after removing the executable and they all fail trying to find the executable. So it definitely is trying to find it. I then did a quick read to find out which is better, a DLL or an executable. It seems that an DLL is much faster as they share memory space where communication between executables is slower. Unforunately our production code needs to be an exectuable. So the unit tests will be slightly slower. I am not too worried about that. But the project does rely on code written in another library which is also in executable format at the moment. Should the projects that expose some sort of SDK rather be compiled to an DLL and then the projects that use the SDK be compiled to executable?

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