c# - Run Specflow with Xunit but gives error nunit.framework -

i'm having weird problem, have googled everywhere , point out have done,

i have simple specflow test login, after browser opening, error.

test name:  check if login working test fullname:  specflow.generatedtests.uitest.smoke.features.loginfeature.checkifloginisworking test source:    c:\**\login.feature : line 7 test outcome:   failed test duration:  0:00:02,676  result stacktrace:   @ system.reflection.runtimeassembly._nload(assemblyname filename, string codebase, evidence assemblysecurity, runtimeassembly locationhint, stackcrawlmark& stackmark, intptr pprivhostbinder, boolean throwonfilenotfound, boolean forintrospection, boolean suppresssecuritychecks)    @ system.reflection.runtimeassembly.internalloadassemblyname(assemblyname assemblyref, evidence assemblysecurity, runtimeassembly reqassembly, stackcrawlmark& stackmark, intptr pprivhostbinder, boolean throwonfilenotfound, boolean forintrospection, boolean suppresssecuritychecks)    @ system.reflection.runtimeassembly.internalload(string assemblystring, evidence assemblysecurity, stackcrawlmark& stackmark, intptr pprivhostbinder, boolean forintrospection)    @ system.reflection.runtimeassembly.internalload(string assemblystring, evidence assemblysecurity, stackcrawlmark& stackmark, boolean forintrospection)    @ system.reflection.assembly.load(string assemblystring)    @ techtalk.specflow.unittestprovider.unittestruntimeproviderhelper.getassertmethodwithformattedmessage(string assemblyname, string typename, string methodname)    @ techtalk.specflow.unittestprovider.nunitruntimeprovider.testinconclusive(string message)    @ techtalk.specflow.infrastructure.testexecutionengine.onafterlaststep()    @ specflow.generatedtests.uitest.smoke.features.loginfeature.scenariocleanup()    @ specflow.generatedtests.uitest.smoke.features.loginfeature.checkifloginisworking() in c:\**\login.feature:line 17 result message: not load file or assembly 'nunit.framework' or 1 of dependencies. system cannot find file specified. 

i have changed app.config file to

<?xml version="1.0" encoding="utf-8"?> <configuration>,   <appsettings>     <add key="xunit.diagnosticmessages" value="true"/>   </appsettings>   <configsections>     <section name="specflow" type="techtalk.specflow.configuration.configurationsectionhandler, techtalk.specflow" />   </configsections>   <specflow>     <unittestprovider name="xunit"/>     <!-- additional details on specflow configuration options see http://go.specflow.org/doc-config -->     <stepassemblies>       <stepassembly assembly="specflow.assist.dynamic" />     </stepassemblies>   </specflow> </configuration> 

the weird thing if run normal selenium test ( not specflow ) works directly.

this part of generated feature file

 using techtalk.specflow;       [system.codedom.compiler.generatedcodeattribute("techtalk.specflow", "2.1.0.0")]     [system.runtime.compilerservices.compilergeneratedattribute()]     public partial class loginfeature : xunit.iclassfixture<loginfeature.fixturedata>, system.idisposable     {          private static techtalk.specflow.itestrunner testrunner;  #line 1 "login.feature" #line hidden          public loginfeature()         {             this.testinitialize();         }          public static void featuresetup()         {             testrunner = techtalk.specflow.testrunnermanager.gettestrunner();             techtalk.specflow.featureinfo featureinfo = new techtalk.specflow.featureinfo(new system.globalization.cultureinfo("en-us"), "login", "check if login functionality working\r\nas expected , see if correct username " +                     "is poping up", programminglanguage.csharp, ((string[])(null)));             testrunner.onfeaturestart(featureinfo);         }          public static void featureteardown()         {             testrunner.onfeatureend();             testrunner = null;         }          public virtual void testinitialize()         {         }          public virtual void scenarioteardown()         {             testrunner.onscenarioend();         }          public virtual void scenariosetup(techtalk.specflow.scenarioinfo scenarioinfo)         {             testrunner.onscenariostart(scenarioinfo);         }          public virtual void scenariocleanup()         {             testrunner.collectscenarioerrors();         }          public virtual void setfixture(loginfeature.fixturedata fixturedata)         {         }          void system.idisposable.dispose()         {             this.scenarioteardown();         } 

any ideas can missing?

thanks in advance.

this normal behavior since if install specflow nuget package installed based on nunit have install nuget xunit specflow

install-package specflow.xunit -version 2.1.0 

update if have done try add nunit package