BizSpark SF Lightning Talk: "Automated Testing (Unit, Integration and Systems)" by Heine Frifeldt
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This document outlines the tools and methodologies used by the server team at Loopt for testing and development. It highlights the importance of continuous integration, dependency injection, and unit testing, along with specific frameworks and tools like Jenkins, Ninject, and Moq. It also provides code snippets demonstrating best practices for testable code and object management.
![Nightly Functional Tests via custom attribute
[TestMethod, ExecuteNightly]
public void FacebookSearch()
{
var adapter = new FacebookAdapter();
var places = adapter.Search(coords, 10000);
Assert.IsTrue(places.Count() > 0);
}
7](https://image.slidesharecdn.com/06loopttestingtools-111108162703-phpapp01/85/BizSpark-SF-Lightning-Talk-Automated-Testing-Unit-Integration-and-Systems-by-Heine-Frifeldt-7-320.jpg)
![Hard to test code that uses statics
public Configuration GetConfiguration()
{
string[] conf = File.ReadAllLines("Config.xml");
// parse contents and construct Configuration obj
…
8](https://image.slidesharecdn.com/06loopttestingtools-111108162703-phpapp01/85/BizSpark-SF-Lightning-Talk-Automated-Testing-Unit-Integration-and-Systems-by-Heine-Frifeldt-8-320.jpg)
![Hard to test code that has object
initialization inside business logic
public Deal[] GetGrouponDeals()
{
WebClient client = new WebClient();
// Logic to retrieve and parse the response
…
}
10](https://image.slidesharecdn.com/06loopttestingtools-111108162703-phpapp01/85/BizSpark-SF-Lightning-Talk-Automated-Testing-Unit-Integration-and-Systems-by-Heine-Frifeldt-10-320.jpg)
![Separate object graph from logic
Ie. remove new operators
public GrouponAdapter(ILooptWebClient webClient)
{
_webClient = webClient;
}
public Deal[] GetGrouponDeals()
{
// Use _webClient to retrieve URL
…
11](https://image.slidesharecdn.com/06loopttestingtools-111108162703-phpapp01/85/BizSpark-SF-Lightning-Talk-Automated-Testing-Unit-Integration-and-Systems-by-Heine-Frifeldt-11-320.jpg)
![Dependency injection Test able code
[TestMethod]
public void VerifyDeals()
{
var testClient = new TestWebClient();
var groupon = new GrouponAdapter(testClient);
// Now you control the URL response
…
}
12](https://image.slidesharecdn.com/06loopttestingtools-111108162703-phpapp01/85/BizSpark-SF-Lightning-Talk-Automated-Testing-Unit-Integration-and-Systems-by-Heine-Frifeldt-12-320.jpg)
![“Moq” as object mock framework
[TestMethod]
public void VerifyDeals()
{
var testClient = new Mock<ILooptWebClient>();
testClient.
Setup(c => c.GetUrl(It.IsAny<Uri>())).
Returns(Resources.MyResponse);
var groupon = new GrouponAdapter(testClient);
…
}
16](https://image.slidesharecdn.com/06loopttestingtools-111108162703-phpapp01/85/BizSpark-SF-Lightning-Talk-Automated-Testing-Unit-Integration-and-Systems-by-Heine-Frifeldt-16-320.jpg)
BizSpark SF Lightning Talk: "Automated Testing (Unit, Integration and Systems)" by Heine Frifeldt
- 1. Loopt Heine Frifeldt <heine@loopt.com> Server Team Manager Tools used for testing 1
- 2. Loopt - Connecting You with the Places You Go 2
- 3. Kiln for source control, wiki and bug tracking 3
- 4. DB Schema in Mercurial via RedGate SQL Source Control 4
- 5. Unit tests via Visual Studio 2010 5
- 6. Continuous builds via Jenkins 6
- 7. Nightly Functional Tests via custom attribute [TestMethod, ExecuteNightly] public void FacebookSearch() { var adapter = new FacebookAdapter(); var places = adapter.Search(coords, 10000); Assert.IsTrue(places.Count() > 0); } 7
- 8. Hard to test code that uses statics public Configuration GetConfiguration() { string[] conf = File.ReadAllLines("Config.xml"); // parse contents and construct Configuration obj … 8
- 9. Constructors as like static methods Keep them simple public class User { public User(int userId) { DataProvider provider = new DataProvider(); var data = provider.GetUserInfo(userId); … } 9
- 10. Hard to test code that has object initialization inside business logic public Deal[] GetGrouponDeals() { WebClient client = new WebClient(); // Logic to retrieve and parse the response … } 10
- 11. Separate object graph from logic Ie. remove new operators public GrouponAdapter(ILooptWebClient webClient) { _webClient = webClient; } public Deal[] GetGrouponDeals() { // Use _webClient to retrieve URL … 11
- 12. Dependency injection Test able code [TestMethod] public void VerifyDeals() { var testClient = new TestWebClient(); var groupon = new GrouponAdapter(testClient); // Now you control the URL response … } 12
- 13. Root of application will have logic to construct object graphs public CoreService( IDealManager dealManager, IUserManager userManager, … public DealManager( IGrouponAdapter grouponAdapter, IDataProvider dataProvider, IPoiController poiController) 13
- 14. Use “Ninject” to construct object graph … _kernel.Get<GrouponAdapter>(); … 14
- 15. Use “Ninject” to construct object graph … Bind<ILooptWebClient>().To<LooptWebClient>(); … 15
- 16. “Moq” as object mock framework [TestMethod] public void VerifyDeals() { var testClient = new Mock<ILooptWebClient>(); testClient. Setup(c => c.GetUrl(It.IsAny<Uri>())). Returns(Resources.MyResponse); var groupon = new GrouponAdapter(testClient); … } 16
- 17. Manage packages via NuGet 17
- 18. Queries into log files via Splunk 18
- 19. Key benchmarks on TV screen via Gecko Board 19
- 20. Tool Resources • Source Control – Mercurial via Kiln • http://www.fogcreek.com/kiln/ • SQL Tools - Redgate SQL Source Control / SQL Compare • http://www.red-gate.com/products/sql-development/ • Automated Build Environment – Jenkins • http://jenkins-ci.org • Dependency Injection / Testable code • http://misko.hevery.com/2008/11/11/clean-code-talks-dependency-injection • Dependency Injection Framework – Ninject • http://ninject.org • Mock Framework – Moq • http://code.google.com/p/moq • Library extension for Visual Studio – Nuget • http://nuget.org • Log file Index and Parser – Splunk • http://www.splunk.com • Engineering dashboard – Gecko board • http://www.geckoboard.com 20
Editor's Notes
- #2: What is Loopt?
- #3: App for various cell phonesfriends around you answer/see structured questions at places
- #4: No test wo/ source controlMercurialNice w/ all tools consolidated => code reviews
- #5: Besides code, keep DB changes in MercurialExtends SQL Manager
- #6: Used to use Nunit, but much simpler with integrated env
- #7: Click specific build and see changeset
- #8: Problem; flaky tests bc invoke 3rd party code => functional test
- #9: To explain next tool, need to provide some background
- #10: Bad practice, but even with lazy data access, still need the database
- #11: Another class of code, hard to testGoing hit Groupon and no control
- #12: Address issues we started using DIAsk for what you need
- #13: Now you control the WebClientSeparate object graph from logic
- #14: Ends up happening => construct all dependencies in root app
- #15: Construct cascading list of dependencies => cumbersome => NinjectReflect over adapter => webClient
- #16: No magic.When figures you need ILooptWebClient => need binding for implementation
- #17: In doing DI => test classes => Moq frameworkMock LooptWebClient => describe what to return
- #18: To get these framework =>NuGet, VS extensionAdd reference => add from 3rd party software lib
- #19: Diff kind of test => monitoring.Once deployed => index log files => search able via Splunk
- #20: Picked key benchmarks from Splunk => dashboard via Gecko BoardIn the hallway for all engineers