Download Resources from this meeting - NYC VSTS User Group

VSTS Developers edition

Presenter: Navneet SrivastavaLead architect and Manager Emerging Health Information Technology

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Visual Studio 2008

Introduction Editions Rapid Application Development Code Quality Effective Team Collaboration Breakthrough User Experiences The Future Questions?

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Microsoft® Visual Studio® 2008 delivers on Microsoft’s vision of smart client applications by enabling developers to rapidly create connected applications that deliver the highest quality, rich user experiences.

With Visual Studio 2008, organizations will find it easier than ever before to capture and analyze information to help them make effective business decisions.

Visual Studio 2008 enables organizations of every size to rapidly create more secure, manageable, and reliable applications that take advantage of Windows Vista™ and the 2007 Office system.

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Architect Edition. Developer Edition. Database Edition. Test Edition. Team Foundation.

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Feature Area Architect Database Development Test Team

Application Designer

System Designer

Logical Datacenter Designer

Deployment Designer

Settings and Constraints Editor

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EditionsEditions:

to visually define service-oriented applications and generate code

to compose applications into systems or reusable subsystems and validate the resulting configurations

to visualize the logical structure of datacenters, specify operational policies and validate applications before deployment

to validate application designs against a target datacenter and identify issues before deployment begins

to specify requirements on the hosting environment in the Application Designer, or to specify constraints of the hosting environment in the Logical Datacenter Designer


Database Project

Offline Database Schema

Database Unit Testing

Data Generation

Database Refactoring

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EditionsEditions:

with source control integration of all database objects for an offline representation of a database schema, which contains the object definitions and deployment scripts that you would need to create a separate instance of that database or to update an existing instance

to make database schema changes in an isolated development environment

to establish a baseline state for your database and then to verify any subsequent changes you make to database objects

to fill a test database with test data that is appropriate for the schema of the database but unrelated to the production data

to automatically update references to renamed database schema objects


Schema Compare

Data Compare

Database Schema Build & Deployment

T-SQL Editor

Advanced Database Tools

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EditionsEditions:

to compare the schemas of two databases and then decide whether to apply some or all schema objects from the source to the target

to compare the data between two databases that have the same schema

to deploy a new database, or changes to an existing database, from your database project to a database server

to modify definitions of database objects such as tables, views, indexes, stored procedures, etc.

to validate SQL syntax, execute database queries and scripts, and examine result sets


Code Metrics

Managed Code Analysis Tool

C/C++ Code Analysis Tool

Code Analysis Check-In Policy

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EditionsEditions:

to identify complex, difficult to maintain, and error-prone code by measuring class coupling, depth of inheritance, cyclomatic complexity, lines of code, and a maintainability index

to analyze managed assemblies and reports information about the assemblies, such as violations of the programming and design rules set forth in the Microsoft .NET Framework Design Guidelines

to identify possible defects in C/C++ source code caused by common coding errors, such as buffer overruns, un-initialized memory, null pointer dereference, memory and resource leaks

to requires that code analysis is run prior to check-in


Profiling Tool

Stand Alone Profiler

Application Verifier

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EditionsEditions:

to detect application performance bottlenecks using lower-overhead sampling for relative performance data, or higher-overhead instrumentation for more exact measurement

to analyze application performance in the absence of the Visual Studio development environment

to quickly find subtle programming errors in C++ applications that can be extremely difficult to identify with normal application testing, such as errors caused by heap corruption, incorrect handle and critical section usage


Unit Testing

Code Coverage

Web Tests

Load Tests

Manual Tests

Generic Tests

Ordered Tests

Test List Editor

Testing Check-In Policy

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EditionsEditions:

to test the functionality of Web applications using a series of HTTP requests

to create tests that are difficult or impossible to automate, such as when the connection between the computer and its power supply is interrupted, or when you want to test for user interface details or behavior, or to refine or examine your test environment at a specific point in the testing processto wrap external programs and tests that were not originally developed for use in the Team System testing toolsto execute a series of tests in a particular order and manage that series as a single testto logically group tests and then work with those tests as groups instead of individually for improved test case management

to require that check-in tests (defined with a test list) are run prior to check-in

to exercise source code by directly calling the methods of a class, passing appropriate parameters, and test the values that are produced against expected values (now available in Visual Studio 2008 Professional Edition)

to measure the effectiveness of tests on a line-by-line or even a block-by-block basis

to run a series of Web tests or unit tests, which operate under multiple simulated users over a period of time, for both performance and stress tests .

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Multi-Targeting Support. Web Designer and CSS Support. ASP.NET AJAX and JavaScript Support. Project Designer. Data LINQ and Entity Support

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Rapid Application DevelopmentRapid Application Development:

Visual Studio will now support targeting multiple versions of the .NET Framework

Users can pick to choose the version of framework they would like to choose to build the application.

Upon Changing on the target framework version , the IDE will update its compilers and applications to use a new version of the .NET Framework.

The present release supports 2.0 , 3.0 and 3.5. Project Templates are based on the Target Framework.

Once created , the project can later be upgraded.

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Web Site Views : Design , Split , Code. Split View. CSS Source View. CSS and HTML intellisense. Outlining and Formatting.

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Transparent Intellisense. Organize C# using statements. JavaScript Intellisense. JavaScript Debugging.

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IDE and Project Designer◦ WPF◦ Silverlight◦ Business Intelligence◦ Workflow Applications◦ EDMX Designer

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ORM LINQ Language Enhancements Support.

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Code Analysis. Unit Testing. Code Profiling. Code Coverage

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Code QualityCode Quality:

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Also known as “Static Code Analysis” Wikipedia says…

“Code analysis is the term applied to the analysis of computer software that is performed without actually executing programs built from that software…”

Implemented via tool to analyze and report information about the assemblies

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Serves as a preventive measure Automates initial “code review” Built-in corrective guidance Easy to use, fully integrated Available for both managed and native code

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Use it to help you write consistent code Enforce standards through code analysis Make it part of all your automated builds Extend it through custom rules Use it often!

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At the Team Project level◦ Team | Team Project Settings | Source Control…

menu◦ Check-in Policy tab◦ Code Analysis check-in policy

At the Project level◦ Website projects

Website | Code Analysis Configuration… menu◦ All other projects

Project | [Project Name] Properties… menu Code Analysis tab

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Is the warning message explicit enough? If not clear, what can we do?

Use rule code (e.g. CA1304) Get corresponding caption (e.g. Globalization

Rules, CA1304: Specify CultureInfo) Look online reference for details (

http://msdn.microsoft.com/en-us/library/ms182189.aspx)

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http://msdn.microsoft.com/en-us/library/ms182189.aspx

http://msdn.microsoft.com/en-us/library/ms182189.aspx

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Tests the smallest amount of a system Designed for testing method calls at the source

code level No configuration or external dependencies Can be used in conjunction with code coverage

for analysis of code once the tests have executed

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Improves maintainability Helps maintain long term quality of application Helps validate and enforce contracts Helps define the system Developers write the tests Provides mechanism for regression testing

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Available to developers and testers Fully integrated with Visual Studio IDE Provides simple migration path from prior

frameworks such as NUnit Support for data driven testing via integration

with database to supply test data

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Writing good unit tests is hard to do Requires insight and experience Can be a frustrating experience at first Increases initial development costs

I don’t know what to test!?!

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Test structures identified through .NET attributes: ◦ TestClass◦ TestMethod◦ ClassInitialize/ClassCleanup◦ TestInitialize/TestCleanup ◦ ExpectedExceptionAttribute

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[ProjectName].vsmdi – contains the definition of the test.

LocalTestRun.testrunconfig – test run configuration file

AuthoringTests.txt – contains general information about testing

ManualTest1.mht – a template-type ManualTest for adding functional test descriptions to your project

UnitTest1.cs – Blank unit test

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Created in a separate test project Can be created contextually at either

Project, file, or method level

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Consider using descriptive names that define◦ The module being tested◦ Method being tested◦ Scenario being tested◦ E.g. <Module>_<Method>_<Scenario>

Package unit tests to follow the structure of the module being tested

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Test framework creates “accessor” assembly regardless of whether or not private methods are available

Test framework uses reflection to support testing private and internal methods

Nothing special you have to do in your part

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Allow unit testing of major part of application Tests must be deterministic (repeatable) Tests must be automated Tests must be efficient (execute quickly) Write unit tests before or in parallel with

production code

Better to write and run incomplete tests than not to run any tests at all!

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Web◦ i.e. testing web application’s authentication

mechanism Ordered

◦ Grouping individual authentication tests for execution in a specific order

Generic◦ Showing how to wrap an external test application

to integrate with Visual Studio

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Also known as “Dynamic Code Analysis” Process of analyzing how code executes

and where majority of the time is spent Used to identify performance bottlenecks Load testing can be considered part of

profiling◦ Available in Team Suite or Tester editions only

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Sampling◦ Interrupts the application at set intervals to

determine which function is executing◦ Used to examine performance for the entire

application Instrumentation

◦ Is more intrusive, inserts enter and exit “probes” into specific functions and tracks during execution

◦ Used to examine performance for specific modules

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Start with either Sampling or Instrumentation

Use Sampling to identify bottlenecks Use Instrumentation to tackle specific

bottlenecks Use load to increase sampling size Analyze in sets of 3 or more

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Helps you monitor your tests effectiveness Used to analyze source for specific missed

methods and branches Records which parts of an application's code

is being exercised by a specific test Team Members can analyze results at a

high-level

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Use code coverage to monitor your tests' effectiveness and completeness◦ Project managers can aggregate results as a

project status indicator◦ Team members can identify missed scenarios by

unit tests Set a high, but realistic target

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It is not a golden hammer Currently it is the dest quantifiable measure

of test completeness It doesn’t say a lot about test quality Beware of developer shortcuts

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View results with a grain of salt Covered paths are based on test design

◦ E.g. if test is designed to touch 50% or code, then a 50% code coverage result yields 100% “real” coverage

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Download Resources from this meeting - NYC VSTS User Group

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