1. Basel · Baden · Bern · Lausanne · Zürich · Düsseldorf · Frankfurt/M. · Freiburg i. Br. · Hamburg · München · Stuttgart Visual Studio for Database Professionals MSDN TechTalk M. Lattmann, Consultant Wallisellen, 4.12.2006

2. © 2006 Kurs- bzw. TC-Namen eingeben2 Agenda  Data Generation  Generating Test Data  Database Unit Testing  Creating Unit Tests  Extending Unit Tests  Extensibility  Generator Extensibility  Distributor Extensibility  Conditions Extensibility  Core messages Knowledge transfer is only the beginning. Knowledge application is what counts.

3. © 2006 Kurs- bzw. TC-Namen eingeben3 Demo Generating Test Data

4. © 2006 Kurs- bzw. TC-Namen eingeben4  Value generators  Simple generators for each data type  Strings: ASCII and Unicode ((var)char, n(var)char, (n)text)  Numbers: tinyint, smallint, int, bigint, real, float, decimal, numeric, money  Binary ((var)binary, image)  Date and Time  UniqueIdentifier (GUID)  Bit  Complex generators  Foreign Key, Regular Expression, Data Bound Generator  Distributions  Uniform, Normal, NormalInverse, Exponential, ExponentialInverse  Can import column distributions from production database (*) (*) Not implemented in CTP7 Generating Test Data

5. © 2006 Kurs- bzw. TC-Namen eingeben5 Agenda  Data Generation  Generating Test Data  Database Unit Testing  Creating Unit Tests  Extending Unit Tests  Extensibility  Generator Extensibility  Distributor Extensibility  Conditions Extensibility  Core messages Knowledge transfer is only the beginning. Knowledge application is what counts.

6. © 2006 Kurs- bzw. TC-Namen eingeben6 Unit Testing  Do changes break your existing code?  Tests for  Stored Procedures, Functions  Triggers  Any SQL  Unit test designer is SQL focused  Work in the language of your choice: T-SQL, C#, VB.NET  Builds on existing Unit Test functionality in Team System  Works together with your application tier unit tests  Well established in.NET development

7. © 2006 Kurs- bzw. TC-Namen eingeben7  Automatically generate unit tests stubs for:  Stored Procedures, Functions, Triggers  Test Validation (assertions)  T-SQL (server based) Assertions  RAISERROR command  Client Side Assertions  None Empty ResultSet  Row Count  Execution Time, … Database Unit Testing

8. © 2006 Kurs- bzw. TC-Namen eingeben8 Demo Unit Testing

9. © 2006 Kurs- bzw. TC-Namen eingeben9  Automatic Deployment Integration  Automatically deploy database project prior to running tests  Data Generation Integration  Automatically generate data based on generation plan prior to running tests  Test Scripts use standard Team System Unit Tests  Pre- und Post Test Scripts are specific for a single unit Test. TestInitialize() and TestCleanup() are common within a test class.  Generated Code can be extended using C# or VB.NET Pre & Post Test Scripts

10. © 2006 Kurs- bzw. TC-Namen eingeben10 Pre & Post Test Scripts [AssemblyInitialize]... DeployDatabaseProject(); GenerateData(); [TestInitialize] Common Script [Test] Pre-Test 1 Test 1 Post-Test 1 [TestCleanup()] Common Script [TestInitialize()] Common Script [Test] Pre-Test 2 Test 2 Post-Test 2 [TestCleanup()] Common Script [AssemblyCleanup]... <DatabaseDeployment... App.config (DatabaseSetup.cs) Per test project per Test Per Test Per test class

11. © 2006 Kurs- bzw. TC-Namen eingeben11 Managing Transactions in Unit Tests BEGIN TRANSACTION TestTransaction UPDATE "Order Details" set Quantity = Quantity + 10 IF @@ROWCOUNT!=50 RAISERROR('Row count does not equal 50',16,1) ROLLBACK TRANSACTION TestTransaction  Capability of putting tests in automatic rollback mode to always maintain original state of database  Implementation in T-SQL

12. © 2006 Kurs- bzw. TC-Namen eingeben12 Managing Transactions in Unit Tests  C#, per Test [TestMethod()] public void dbo_InsertTable1Test() { CommittableTransaction tx = new CommittableTransaction(); ExecutionContext.Connection.EnlistTransaction(tx); PrivilegedContext.Connection.EnlistTransaction(tx); // run tests tx.Rollback(); }

13. © 2006 Kurs- bzw. TC-Namen eingeben13 Managing Transactions in Unit Tests  C#, for all Tests TransactionScope _trans; [TestInitialize()] public void Init() { _trans = new TransactionScope(); base.InitializeTest(); } [TestCleanup()] public void Cleanup() { base.CleanupTest(); _trans.Dispose(); }

14. © 2006 Kurs- bzw. TC-Namen eingeben14 Demo Extending Unit Tests

15. © 2006 Kurs- bzw. TC-Namen eingeben15 Agenda  Data Generation  Generating Test Data  Database Unit Testing  Creating Unit Tests  Extending Unit Tests  Extensibility  Generator Extensibility  Distributor Extensibility  Conditions Extensibility  Core messages Knowledge transfer is only the beginning. Knowledge application is what counts.

16. © 2006 Kurs- bzw. TC-Namen eingeben16 Generator Extensibility  Team System has many Extension Points  Generator Extensibility is just an Example  Implemented by.NET Developer  Used by DB Professional

17. © 2006 Kurs- bzw. TC-Namen eingeben17 Data Generator Extensibility  Generators  Implement:  IDesigner  IGenerator  Base class  Generator  Attributes  GeneratorAttribute  GeneratorNameAttribute  Distributions  Implement:  IDistribution  Conditions  Implement:  ICondition

18. © 2006 Kurs- bzw. TC-Namen eingeben18  Generators and Distributions have to:  Live in or under the: %ProgramFiles%\Microsoft Visual Studio 8\DBPro\Extensions directory  Get registered in the %ProgramFiles%\Microsoft Visual Studio 8\DBPro\Microsoft.VisualStudio.TeamSystem.Data.Extensions.xml file  Be strong key signed Microsoft.VisualStudio.TeamSystem.Data.Generators.RegexString, Microsoft.VisualStudio.TeamSystem.Data.Generators, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a Microsoft.VisualStudio.TeamSystem.Data.Generators.RegexString, Microsoft.VisualStudio.TeamSystem.Data.Generators, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a Microsoft.VisualStudio.TeamSystem.Data.Generators.Exponential, Microsoft.VisualStudio.TeamSystem.Data.Generators, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a Microsoft.VisualStudio.TeamSystem.Data.Generators.Exponential, Microsoft.VisualStudio.TeamSystem.Data.Generators, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a </types> Registration

19. © 2006 Kurs- bzw. TC-Namen eingeben19 Demo Generator Extensibility

20. © 2006 Kurs- bzw. TC-Namen eingeben20 Core messages  All Tasks of DB Developers integrated in the Team System Lifecycle  Less support for DBAs and DB Architects  Strong Support of Database Changes  Automatically generate Change Scripts  Repository, Versioning  Strong Testing Features  Unit Tests, Data Generation  Integrated in MSBuild  Automated Regression Tests  Extensible Data are always part of the game.

21. © 2006 Kurs- bzw. TC-Namen eingeben21 Pricing, Licensing and Availability  CTP 7 Available Today  Availability for MSDN Universal Subscribers  Around 8. Dec 2006  General availability in January 2007:  Included in Team Suite at No Extra Cost  Purchase as an individual Edition  Same pricing as other Team System Editions

22. © 2006 Kurs- bzw. TC-Namen eingeben22 Literature  Ambler, Sadalage: Refactoring Databases: Evolutionary Database Design