c# - Unit test for an application -

i displaying chart in mvc.

 public class homecontroller : controller     {         mapcontext context = new mapcontext();          public actionresult index()         {          }     } 

how write test case check data. new mvc

you'll find hard write true unit test because you're instantiating concrete instance of mapcontext. ideally you'd use ioc/dependancy injection inject mapcontext , you'd want create interface can faked / mocked otherwise you're not testing controller you'retesting mapcontext no longer unit test intergration test..... lost yet?!

controller like:

public class homecontroller : controller {     imapcontext _context;      public homecontroller(imapcontext mapcontext)     {         _context = mapcontext;                 }      public actionresult index()     {         var x = (from c in _context.area                      select c.name).toarray();         var y = (from c in _context.area                      select c.pin).toarray();          var bytes = new chart(width:500, height: 300)         .addseries(          charttype: "column",          xvalue: x,          yvalues: y)         .getbytes("png");         return file(bytes, "image/png");     } } 

then unit test (nunit + moq) :

[testfixture] public class homecontrollertest {     mock<imapcontext> _mapcontext;      [setup]     public void setup()     {         _mapcontext = new mock<imapcontext>();     }      [test]     public void basictest()     {         httpconfiguration configuration = new httpconfiguration();         httprequestmessage request = new httprequestmessage();          var homecontroller = new homecontroller(_mapcontext.object);         homecontroller.request = request;          var result = homecontroller.index();          assert.isnotnull(result);         assert.areequal(<somevalue>, result.someproperty);      } } 

obviously you'll need put in proper value in test against , change someproperty real property.

further reading find out more

• ioc/dependancy inject
• nunit
• moq

edit

here tutorials should started

http://www.asp.net/mvc/overview/older-versions-1/unit-testing/creating-unit-tests-for-asp-net-mvc-applications-cs

https://msdn.microsoft.com/en-gb/library/dd410597(v=vs.100).aspx

https://msdn.microsoft.com/en-us/library/ff847525(v=vs.100).aspx