Working with Visual Studio 2010 - Part 5

 

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hi my name is Julio Cel and in this

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video I will show you how to do some

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test driven development in Visual Studio

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2010 and also how to associate your

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source source code uh check-ins with

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Team Foundation server or items now

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remember that we are using H beta 2 of

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Visual Studio 2010 and team Foundation

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server

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2010 okay so so far we have H planed our

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our Sprint or iter

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we have um a team project we have a team

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ready to work so what we want to do now

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as a first um coding task is to do some

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test driven development you know uh this

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approach to development means that you

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will first create your tests and only

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after creating the test you will start

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writing some code so Vis Studio 2010 has

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some very nice additions for doing this

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kind of development

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so how do we start on this let's go to

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visual studio now for this session I

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will be taking the role of the developer

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and this will be hulas in the in this in

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this demo so let's add the the team

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project let's use the appropriate

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credentials

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okay so log it in as a developer I will

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connect and I I want to do this because

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first thing I want to do is to check

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which are my tasks I have some test

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assigned so far you can see this from

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the query be from the team queries the

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my test query is returning me three

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tasks and the one that I want to start

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with is the one that is called build the

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book list screen okay so how do we do

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this in the test driven development way

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uh okay let's close let's just close

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this oh sorry let's close this

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and what we want to do is to create a

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solution rank new solution let's go file

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new

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project okay and from the available

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templates let's go

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to uh Visual Studio Solutions let's pick

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an appropriate directory for this I will

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use this folder and let's call this

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bookstore okay make sure you you check

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this check mark at to solution control

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okay bookstore and let's click

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okay so now Visual Studio is asking us

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for which H folder into the source

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control we want to place this rank new

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solution so let's say um in the source

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control we will call this um source so

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into in your Source control you will if

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you go to the bookstore SL searce pad

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you will find all the files related to

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this solution so let's just click

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okay okay so just to make sure uh we got

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the idea let's go to Team Explorer okay

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let's close more items and open source

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control and you can see that inside

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bookstore there's a new folder called

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source and inside Source there's

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bookstore dos solution okay the plus

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sign means that these files are marked

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for addition in the next checking but

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they are not still over there they're

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just it's like a mark on these files so

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let's close that and what we need to do

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this this time uh let's first create a

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couple of projects okay first thing to

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create is will be um class

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Library okay this is the class Library

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uh remember we have been a Windows

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application uh bookstore Windows uh

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client and we will basically use uh two

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projects for this which will be a class

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Library we will call business and a

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Windows um WPF

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application

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ER to display all the all the data so

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let's call this

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bookstore

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do

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business

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okay here hit

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okay so now that we have that we will

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also need some uh project for the tests

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first let's just delete this class one

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class we don't need that and let's add a

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new

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project we will go to test test project

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and let's call

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it bookstore.

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tests okay

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so we will start with um we will need to

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get a list of all the books in the in

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the database so how to do that well

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let's figure it out in our unit test

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so we get here a brand new file called

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unit test

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one okay we will just um we'll rename

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this

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one okay let's call it

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we will be working on a book manager

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class this book manager will be in

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charge of retrieving and Performing all

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the actions H towards the database so

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let's call this bop bager

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tests okay let's hit yes so the class is

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also renamed and we already have some uh

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method stop here and we will change this

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into get

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book

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list do

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not return n okay this is a very basic

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test okay keep in mind this is a short

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video so we will just we will just want

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to get a list of the books and make sure

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it is not null okay so to do this we

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will just use

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the let's

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hit book manager okay the quick tip here

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to use the suggestions from the

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intelligence you can do control alt and

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space bar okay this makes stuff easier

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so let's say book bager

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manager equals oh sorry book manager

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okay you can see this small U indicator

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here if you open it you can generate a

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class for this uh book manager you can

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just click here but we want to do this

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generate new type over here because we

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want to place this into the business

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Library okay let's click create a new

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file book manager CS okay so the book

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manager class is already created if we

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hit F12 we go to the book manager class

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it is in the business Library okay back

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in the test we say equals new book

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manager okay and we want to get a list

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of what of

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books

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okay we call it books and seems like we

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we don't have a book class so we we want

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to do is to generate a new type call it

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a book Into The bookstore. Business

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Library hit

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okay so this is equals to

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manager. get book list but again we

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don't have this new method so maybe you

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already know how to do this let's let's

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just generate a meod stop for getbook

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list and finally let's assert on

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this okay is not

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null okay so we want to make sure that

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books is a not new H object basically so

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now that we have this what we want to do

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is try to see if this test will pass so

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let's just right click run

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tests okay this will build the solution

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and you can see that the test is not

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passing as expected if you right click

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here and let's see for example view test

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results details you can see that the

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test method get book list not return

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return n to reception not implemented

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exception which is expected because we

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have that into the getbook list

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method

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so given the very small amount of time

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for this video this will be a two-part

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post so this is the end of the first

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part and in the second part you will see

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how to actually fix this uh error we're

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getting here and how to make this uh a

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green uh passive test okay so see you in

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next part