STAATLICHANERKANNTEFACHHOCHSCHULE

Author: Dip.-Inf. (FH) Johannes HoppeDate: 27.10.2010

10.11.2010

STUDIERENUND DURCHSTARTEN.

STAATLICHANERKANNTEFACHHOCHSCHULE

RIA – Rich Internet Applications

Author: Dip.-Inf. (FH) Johannes HoppeDate: 27.10.2010

10.11.2010

First ASP.NET Project: WebNoteMvc

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First ASP.NET Project: WebNoteMvc

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View(Presentation)

Controller Layer(Application flow controll)

Model(Business Layer)

Service Layer

Repository Layer

Data Access Layer

First ASP.NET Project: WebNoteMvc

Tiers for the Model

› Service Layer› Sub-Applications boundary “Access from outside”› CRUD, Validation, Transactions…› A good place to “talk” with other repositories

› Repository Layer› “Shields” application from real data access› A good place for caching

› Data Access Layer (here: Entity Framework)› Data mapper that moves data between objects and a database

(brutally simplified Martin Fowler: Patterns of Enterprise Application Architecture)

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First ASP.NET Project: WebNoteMvc

Implementation

› 1. We created a database and a table› 2. We created an EDMX file based on the database› 3. We used the plugin ”MCGe” to generate POCOs› 4. We created a repository layer with all CRUD operations› We did not created a service layer (for now)› 5. We changed the default controller to provide all CRUD operations› 6. We created views for every Controller operation

http://code.google.com/p/lecture-hoppe/downloads/detail?name=WebNoteMvc_v0.3.zip

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Repetition of creating “WebNoteMvc”

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Repetition of creating “WebNoteMvc”

1. We created a database and a table

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Repetition of creating “WebNoteMvc”

2. We created an EDMX file based on the database

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Repetition of creating “WebNoteMvc”

3. We used the extension ”MCGe v0.3” to generate POCOs

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http://blog.johanneshoppe.de/2010/10/ado-net-mocking-context-generator-extended-walkthrough/

Repetition of creating “WebNoteMvc”

3. We used the extension ”MCGe v0.3” to generate POCOs

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Repetition of creating “WebNoteMvc”

4. We created a repository layer with all CRUD operations

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Repetition of creating “WebNoteMvc”

5. We changed the default controller to provide all CRUD operations

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Repetition of creating “WebNoteMvc”

6. We created views for every Controller operation

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Repetition of creating “WebNoteMvc”

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Repetition of creating “WebNoteMvc”

Questions?

?

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Unit Tests

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Unit Tests

What?Why?

When?How?

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Unit Tests

What?

A piece of softwarethat (automatically)tests the smallest parts of an application.

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Unit Tests

What?

A unit test enables you to verifywhether a particular method

works as you intend it to work.

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Unit Tests

What?

A unit test is a straightforwardway to produce code

with a low error rate.

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Unit Tests

Why?

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Unit Tests

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Building tests for your code

avoids software bugs.

Unit Tests

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Building tests for your code

provides you with a safety net for change.

Unit Tests

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Building tests for your code

forces you to write loosely coupled code.

Unit Tests

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Building tests for your code

forces you to take a user perspective on the code.

Unit Tests

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Building tests for your code

provides a documentation for future coders.

Unit Tests

When?

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Unit Tests

When?

Always.or

Whenever it is plannedto reuse the software.

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Unit Tests

When?

Beforewriting the actual code.(Test-Driven Development)

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Unit Tests

When?

Test-Driven Development1. Write a unit test that fails.2. Write code that passes the unit tests.3. Refactor your code.

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Unit Tests

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How?

Unit Tests

Questions?

?

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Unit Tests

Your tasks:

› Try to write your first set of unit tests› Work together with you neighbor (2 persons, one team)› Use the Mock-Framework “Moq” from www.moq.me› Implement:

AddNoteTest, EditNoteTest, DeleteNoteTest DeleteNoteShouldThrowExceptionTest GetNoteShouldNotCallSaveChangesTest 6 Tests for the Controller

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THANK YOUFOR YOUR ATTENTION

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