DEV302 - Visual Studio Team System Building Robust and Reliable Software Eric Lee Program Manager Microsoft Corporation

Development Teams Infrastructure Architect Solution Architect Project Manager Developer Tester End User

A day in the life … Write Code Write Unit Tests Review Work Run Code Analysis Operations! Developer

A day in the life … Write Code Write Unit Tests Review Work Run Code Analysis Operations! Developer Microsoft Research Internal Tools

Visual Studio Team System Change ManagementWork Item TrackingReportingProject Site Visual Studio Team Foundation Integration ServicesProject Management Process and Architecture Guidance Dynamic Code Analyzer Visual Studio Team Architect Static Code AnalyzerCode ProfilerUnit TestingCode CoverageVisio and UML ModelingTeam Foundation ClientVS ProClass ModelingLoad TestingManual TestingTest Case ManagementApplication ModelingLogical Infra. ModelingDeployment Modeling Visual Studio Team Developer Visual Studio Team Test Visual Studio Industry Partners

Visual Studio Team System Change ManagementWork Item TrackingReportingProject Site Visual Studio Team Foundation Integration ServicesProject Management Process and Architecture Guidance Visual Studio Industry Partners Dynamic Code Analyzer Visual Studio Team Architect Static Code AnalyzerCode ProfilerUnit TestingCode CoverageVisio and UML ModelingTeam Foundation ClientVS ProClass ModelingLoad TestingManual TestingTest Case ManagementApplication ModelingLogical Infra. ModelingDeployment Modeling Visual Studio Team Developer Visual Studio Team Test Dynamic Code AnalyzerStatic Code Analyzer Code Profiler Unit TestingCode Coverage

A day in the life … Write Code Write Unit Tests Review Work Run Code Analysis Operations! Developer

Test Driven Development Jim Newkirk

TDD Tenants Never write a single line of code unless you have a failing unit test Eliminate Duplication

Test List Task Based 4-8 hour duration minute exercise at beginning Brainstorm a list of unit tests Do not get hung up on completeness, you can always add more later Describes completion requirements

Red/Green/Refactor Write a test for new capability Start Compile Fix compile errors Run the test And see it fail Write the code Run the test And see it pass Refactor as needed

Test Driven Development (TDD)

Recap Integrate testing into the development process Testability is a primary motivation during development The Visual Studio Team System provides an ideal environment for doing Test Driven Development

A day in the life … Write Code Write Unit Tests Review Work Run Code Analysis Operations! Developer

A day in the life … Write Code Write Unit Tests Review Work Run Code Analysis Operations! Developer

Code Coverage How effective are my unit tests? Am I done testing? Am I executing all the relevant parts of my application?

Code Coverage void PurchaseItem(int itemID) { if (itemID == 0) { throw new Exception(); } else { ProcessOrder(itemID); } UnitTest() { PurchaseItem(1); }

{ if (itemID == 0) { throw new Exception(); } else { ProcessOrder(itemID); } Code Coverage UnitTest() { PurchaseItem(1); } void PurchaseItem(int itemID)

{ throw new Exception(); } else { ProcessOrder(itemID); } void PurchaseItem(int itemID) if (itemID == 0) Code Coverage UnitTest() { PurchaseItem(1); }

{ throw new Exception(); } { ProcessOrder(itemID); } void PurchaseItem(int itemID) if (itemID == 0) Code Coverage UnitTest() { PurchaseItem(1); } else

{ throw new Exception(); } { ProcessOrder(itemID); } void PurchaseItem(int itemID) if (itemID == 0) Code Coverage UnitTest() { PurchaseItem(1); } else ProcessOrder(itemID);

{ throw new Exception(); } { ProcessOrder(itemID); } void PurchaseItem(int itemID) if (itemID == 0) Code Coverage UnitTest() { PurchaseItem(1); } else ProcessOrder(itemID); throw new Exception();

Visual Studio Team System Code Coverage

Predictability Effective testing Drives up quality Catch ‘blind spots’ right in Visual Studio

A day in the life … Write Code Write Unit Tests Review Work Run Code Analysis Operations! Developer

A day in the life … Write Code Write Unit Tests Review Work Run Code Analysis Operations! Developer

Code Analysis String path = “”; for (int i = 0; i < 100; i++) { path += “Value”; } return path;.EXE Intermediate Representation

Code Analysis String path = “”; for (int i = 0; i < 100; i++) { path += “Value”; } return path;.EXE Intermediate Representation Static Code Analysis

Code Analysis String path = “”; for (int i = 0; i < 100; i++) { path += “Value”; } return path;.EXE Intermediate Representation Application Verifier/Code Profiling

Static Code Analysis Bad code is syntactically correct Different naming conventions Manual code reviews can be inconsistent

Static Code Analysis Defects Security Performance Design Policy String path = “”; for (int i = 0; i < 100; i++) { path += “Value”; } return path;

Static Code Analysis Defects Security Performance Design Policy Intermediate Representation

Static Code Analysis DefectsSecurity Performance DesignPolicy Intermediate Representation

Static Code Analysis Don’t call String.Concat inside of loops Prefer StringBuilder String path = “”; for (int i = 0; i < 100; i++) { path += “Value”; } return path; for (int i = 0; i < 100; i++) { path.Append(Value”); } return path.ToString();

Visual Studio Team System Static Code Analysis

Catch bugs at their source Capable of complex analysis Leverages lessons learned Turn habit into ‘rules’

Application Verifier ‘Works on my machine’ ‘It used to work’ Runtime issues

Application Verifier Adventure Works DefectsSecurityLogoApp Compat

Visual Studio Team System Application Verifier

Catch critical errors at runtime Handle/Heap verification issues ‘Breaks’ into Visual Studio Team System at the source of the problem

Code Profiler Constant hardware updates Poor end-user experience Low throughput of transactions

Sampling Adventure Works Login() 1 Browse()1 Login() 1 Browse()2 Login() 1 Browse()3 Login() 1 Browse()4 Login() 1 Browse()5 Login() 1 Browse()5 Details()1 Login() 1 Browse()5 Details()1 CheckOut()1 Login() 1 Browse()5 Details()1 CheckOut()1 Logout()1

Sampling Adventure Works Login() 1 Browse()5 Details()1 CheckOut()1 Logout()1 Browse()5

Instrumentation Adventure Works

Instrumentation Basic Blocks Adventure Works

Instrumentation Basic Blocks Adventure Works Timing Probes

Instrumentation Adventure Works Browse() 10 ms Init() 20 ms Browse() 10 ms Init() 20 ms String.Concat() 5060 ms Browse() 10 ms Init() 20 ms String.Concat() 5060 ms Cleanup() 5 ms

Instrumentation Adventure Works Browse() 10 ms Init() 20 ms String.Concat() 5060 ms Cleanup() 5 ms String.Concat() 5060 ms

Visual Studio Team System Code Profiler

Do more with less Great customer experience

A day in the life … Write Code Write Unit Tests Review Work Run Code Analysis Operations! Developer

A day in the life … Write Code Write Unit Tests Review Work Run Code Analysis Operations! Developer

Avicode MOM Configuration Pack Wizard

Visual Studio Team System Change ManagementWork Item TrackingReportingProject Site Visual Studio Team Foundation Integration ServicesProject Management Process and Architecture Guidance Visual Studio Industry Partners Dynamic Code Analyzer Visual Studio Team Architect Static Code AnalyzerCode ProfilerUnit TestingCode CoverageVisio and UML ModelingTeam Foundation ClientVS ProClass ModelingLoad TestingManual TestingTest Case ManagementApplication ModelingLogical Infra. ModelingDeployment Modeling Visual Studio Team Developer Visual Studio Team Test Dynamic Code AnalyzerStatic Code Analyzer Code Profiler Unit TestingCode Coverage

Other Sessions DayTimeSessionTopic Tuesday12:15DEVPNL2 Visual Studio Team System Partners Tuesday1:30 DEV 300 Project Management Tuesday1:30 ARC 304 Bridging the Gap Between IT and Dev Tuesday3:15 ARC 400 Developing SOAs Wednesday8:30 DEV 301 Software Testing Thursday1:30 DEV 302 Advanced Development Thursday3:15 DEV 303 Enterprise-Class Source Control Friday9:00 ARC 312 Designing for Deployment Friday12:15DEVPNL5 Implementing Software Processes

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