Pradeep

WCF REST

novicegeek — Fri, 12 Mar 2010 18:15:14 +0000

Hi,

For the next few posts i am going to share some basics about WCF, REST Architecture and How to develop REST architecture in .NET.

Before that why do we need Web services???

SOA

A service-oriented architecture (SOA) is a flexible set of design principles used during the phases of systems development and integration. A deployed SOA-based architecture will provide a loosely-integrated suite of services that can be used within multiple business domains.

When the same data is requested across multiple domains (asp,asp.net,php,jsp,window app,java,etc……) we expose/host the data in a standard format such as XML,JSON,RSS,ATOM,etc. Client developers will use those data for their development. Currently most of the enterprise level development are done in the SOA architecture.

SOA Example

One of the simplest solid visible example that every knows is twitter.

The twitter has its apps in almost all domains starting from HTML/JS, Windows, WPF, Adobe AIR, all mobile platforms, and the list keeps on going.

The twitter API uses REST based services in XML, JSON, RSS & ATOM formats. The following is a simple service to fetch the recent 20 public twitter updates.

http://api.twitter.com/1/statuses/public_timeline.xml (Click the link and see for yourself)

Change the .xml to json,atom or rss to GET the result in various formats. The app developer can use a proxy to request, parse the response xml and display the data inside the app the way they wanted to display.

RESTful Services

REpresentational State Transfer (REST) is an architecture for representing a resource through HTTP. In REST Service all the data’s are referred as a resource and transferred through http. These RESTful services represented by the URI. This rest can be applied for following HTTP methods such as

GET
POST
PUT
DELETE

Simply it can be used in the place where CRUD operations alone are needed.

In the next part i will dive deep into WCF REST & WCF REST Starter Kit.

Regards,

Pradeep.

Filed under: REST, WCF REST Starter Kit Tagged: .NET 4.0, C#, REST, WCF, WCF REST Starter Kit, Web Services

.NET Testing Frameworks

novicegeek — Tue, 17 Nov 2009 14:18:17 +0000

Hello World,

In this post we are going to explore about the various testing frameworks available for .NET. This is the continuation to my previous post on TDD-Intro.

The Wikipedia source gives various .NET testing frameworks out of which

plays major role. We are going to explore about each framework in the following sections.

Test Runners:

Visual studio Test runner can run in itself in visual studio. No seperate gui or addins needed. Other unit tests frame work won’t run inside Visual Studio 2008 automatically. You have to build the unit testing class project and run it in their own GUI’s and Testing Console .

NUnit GUI

Gallio MbUnit GUI

xUnit.Net GUI

To run these test frameworks in visual studio 2008 i prefer two options.

1. Resharper

2. TestDriven.Net

Resharper Inside The Unit Testing Project

Resharper Test Runner for Other Testing Frameworks Inside VS2008

TestDriven.Net Inside The Unit Testing Project

Resharper you need to buy where as TestDriven.Net you can use the student version for free. Both are very useful and allows you to debug inside visual studio.

VS2010 Fully Supports 3rd party unit testing frameworks.

VS2010 3rd party unit testing framework support

Coding Unit Testing:

The following table give the list of api’s used by the various unit testing frameworks.(Source:xUnit.Net’s Comparison)

Attributes:

NUnit 2.x	MbUnit 2.4	MSTest	xUnit.net
[Test]	[Test]	[TestMethod]	[Fact]
[TestFixture]	[TestFixture]	[TestClass]	n/a
[ExpectedException]	[ExpectedException]	[ExpectedException]	Assert.Throws orRecord.Exception
[SetUp]	[SetUp]	[TestInitialize]	Constructor
[TearDown]	[TearDown]	[TestCleanup]	IDisposable.Dispose
[TestFixtureSetUp]	[TestFixtureSetUp]	[ClassInitialize]	IUseFixture
[TestFixtureTearDown]	[TestFixtureTearDown]	[ClassCleanup]	IUseFixture
[Ignore]	[Ignore]	[Ignore]	[Fact(Skip="reason")]
n/a	[Timeout]	[Timeout]	[Fact(Timeout=n)]
[Property]	n/a	[TestProperty]	[Trait]
n/a	[Row], [RowTest]	[DataSource]	[Theory], [XxxData]

Assertions:

NUnit 2.2.x	MbUnit 2.4	MSTest	xUnit.net
AreEqual	AreEqual	AreEqual	Equal
AreNotEqual	AreNotEqual	AreNotEqual	NotEqual
AreNotSame	AreNotSame	AreNotSame	NotSame
AreSame	AreSame	AreSame	Same
Contains	Contains and In	Contains (onCollectionAssert)	Contains
DoAssert	n/a	n/a	n/a
n/a	NotIn	DoesNotContain (onCollectionAssert)	DoesNotContain
n/a	n/a	n/a	DoesNotThrow
Fail	Fail	Fail	n/a
Greater	Greater	n/a	n/a
Ignore	Ignore	Inconclusive	n/a
n/a	Between	n/a	InRange
IsAssignableFrom	IsAssignableFrom	n/a	IsAssignableFrom
IsEmpty	IsEmpty	n/a	Empty
IsFalse	IsFalse	IsFalse	False
IsInstanceOfType	IsInstanceOfType	IsInstanceOfType	IsType
IsNaN	IsNan	n/a	n/a
IsNotAssignableFrom	IsNotAssignableFrom	n/a	n/a
IsNotEmpty	IsNotEmpty	n/a	NotEmpty
IsNotInstanceOfType	IsNotInstanceOfType	IsNotInstanceOfType	IsNotType
IsNotNull	IsNotNull	IsNotNull	NotNull
IsNull	IsNull	IsNull	Null
IsTrue	IsTrue	IsTrue	True
Less	Less	n/a	n/a
n/a	NotBetween	n/a	NotInRange
n/a	n/a	n/a	Throws

I am using MbUnit. I choose Mbunit because of its [Row] parameter based testing and its extendability with TeamCity. Eventhough xUnit.Net is new, it seems to be impressive and also under active development. All the above testing frameworks are well documented. I believe this one and my last post will give a nice crisp about unit testing, unit testing frameworks, and other unit testing tools in .NET.

Regrds,
Pradeep.

Posted in .Net, 3rd Party, C#, Unit Testing

TDD

novicegeek — Fri, 30 Oct 2009 19:02:23 +0000

Hello World,

Currently i am concentrating on Unit testing part of my project. So i am planning to write some series (hopefully about 4 to 5 post) about TDD, available TDD frameworks, unit testing with those frameworks, etc.

So, What is TDD????

Test Driven Development is a software development technique that involves in writing a series of test cases against a small unit of a program. Small unit of the program may be a method or a procedure (For procedural programming like C#).

Here the developer will write the series of test cases against their methods. The test cases are written with the fake test datas and tested with the Assertion class to return the True/ False value to tell either the test is passed/ failed.

At first, the method is filled with code blocks which are simple enough to make the test to pass.Then refactoring is done, and again testing continues.

Steps of TDD:

TDD Flow Chart

The flow chart (Referenced from wikipedia) attached shows the various steps involved in TDD.

1. Firs step is to write a test for our method(Imaginary method). Surely it will fails since we have’nt created any method stub for that yet.

[P.S: Trust me guys, at first this step seems to be funny but after you get used to it you will know its value. It really improves your confidance towards the requirement and code quality.]

2. After it fails create the method stub and appropriate production code and test it again. Run the test.

3. Repeat the above process till the test get passed and the requirement is fulfilled.

4. Refactor the code based on the specifications and make it to pass the tests.

This method makes the code cleaner and clearer. These unit test remain as a great documentation for other/ new developer who is going to work on the project.

UML diagrams wont make the developers to follow their design but unit testing makes it possible. The automated build will use these test cases will reveal the stability of the build. Unit testing ensures the all the code changes are correct and working fine.

So i guess thats enough for the introduction for the TDD. In my next post i will explain about the various unit testing frameworks available for use.

Hope you all like this!

-Pradeep.

Posted in Unit Testing

Console.WriteLine(“Hello World!”);

novicegeek — Sat, 19 Sep 2009 02:57:19 +0000

Hi,

This is Pradeep. This is my first blog and my first blog post(like the hello world program)!

This blog is dedicated to all tech geeks who had enlighten me and making me to learn each day in out with the cool new technology stuffs and .net nooks. Now its my turn to contribute and share to this world about the things i know and learnd.

Since i am novice a and an upcoming geek your views, ideas are always welcome. Please point me out if i go wrong in any place!

Hope to post a lot!

-Pradeep

Posted in Others