Exception When creating BUnit tests for Blazor #1979

7 Answer(s)

• 

  0

  alper created 3 years ago

  Support Team Director

  @maliming will help you on that.

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• 

  0

  maliming created 3 years ago

  Support Team Fullstack Developer

  hi Thomas

  Can you share your steps and code to reproduce the problem?

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  0

  Jesse.Thomas@condoauthorityontario.ca created 3 years ago

  Hi Maliming,

  I have a method in my razor.cs class :

        protected virtual async Task SetPermissionsAsync()
          {
              HasEditPermission =  await AuthorizationService.IsGrantedAsync(UpdatePolicyName);
          }
  

  This returns an IAuthorizationService, and comes from the static class AbpAuthorizationServiceExtensions. This method is first Initialized in the following start up method in the razor component:

          protected override async Task OnInitializedAsync()
          {
              await SetPermissionsAsync();
          }
  

  This is where the error occurs. I need to pass an instance of the IAuthorizationService to the component during the test. Here is the test I wrote:

  using System;
  using System.Collections.Generic;
  using System.Linq;
  using System.Text;
  using System.Threading.Tasks;
  using Bunit;
  using Bunit.TestDoubles;
  using Cao.CatOs.Blazor.Pages;
  using Cao.CatOs.Blazor.Services;
  using Microsoft.AspNetCore.Authorization;
  using Microsoft.Extensions.DependencyInjection;
  using NSubstitute;
  using Volo.Abp.Authorization;
  using Volo.Abp.LanguageManagement;
  using Xunit;
  
  namespace Cao.CatOs.Blazor.Tests
  {
      public class MultilingualComponent
      {
          protected string UpdatePolicyName = LanguageManagementPermissions.LanguageTexts.Edit;
          [Fact]
          public void Should_ReturnMultilingualExportHeader_ForRenderedComponent()
          {
        
              // Arrange
              using var ctx = new TestContext();
              var authContext = ctx.AddTestAuthorization();
              authContext.SetAuthorized("admin");
              //TODO:Mock parameters for CustomLanguageService using NSubstitute
              var languageManagement = Substitute.For<ICustomLanguageTextAppService>();
              var navigationManager = Substitute.For<INavigationService>();
              var component = Substitute.For<CatOsComponentBase>();
              ctx.Services.AddSingleton(component);
              ctx.Services.AddSingleton(languageManagement);
              ctx.Services.AddSingleton(navigationManager);
              // Act
              var cut = ctx.RenderComponent<Multilingual>();
  
              // Assert
              cut.MarkupMatches("<h3>Multilingual Export</h3>");
          }
      }
  }
  

  The error occurs on the //Act line . The exception is :

  Volo.Abp.AbpException
  authorizationService should implement Volo.Abp.Authorization.IAbpAuthorizationService
     at Microsoft.AspNetCore.Authorization.AbpAuthorizationServiceExtensions.AsAbpAuthorizationService(IAuthorizationService authorizationService)
     at Microsoft.AspNetCore.Authorization.AbpAuthorizationServiceExtensions.AuthorizeAsync(IAuthorizationService authorizationService, Object resource, String policyName)
     at Microsoft.AspNetCore.Authorization.AbpAuthorizationServiceExtensions.AuthorizeAsync(IAuthorizationService authorizationService, String policyName)
     at Microsoft.AspNetCore.Authorization.AbpAuthorizationServiceExtensions.IsGrantedAsync(IAuthorizationService authorizationService, String policyName)
     at Cao.CatOs.Blazor.Pages.Multilingual.SetPermissionsAsync() in C:\CAT-OS\src\Cao.CatOs.Blazor\Pages\Multilingual.razor.cs:line 49
     at Cao.CatOs.Blazor.Pages.Multilingual.OnInitializedAsync() in C:\CAT-OS\src\Cao.CatOs.Blazor\Pages\Multilingual.razor.cs:line 38
     at Microsoft.AspNetCore.Components.ComponentBase.RunInitAndSetParametersAsync()
     at Bunit.Rendering.TestRenderer.AssertNoUnhandledExceptions() in /_/src/bunit.core/Rendering/TestRenderer.cs:line 355
     at Bunit.Rendering.TestRenderer.Render[TResult](RenderFragment renderFragment, Func`2 activator) in /_/src/bunit.core/Rendering/TestRenderer.cs:line 237
     at Bunit.Rendering.TestRenderer.RenderFragment(RenderFragment renderFragment) in /_/src/bunit.core/Rendering/TestRenderer.cs:line 55
     at Bunit.Extensions.TestContextBaseRenderExtensions.RenderInsideRenderTree(TestContextBase testContext, RenderFragment renderFragment) in /_/src/bunit.core/Extensions/TestContextBaseRenderExtensions.cs:line 45
     at Bunit.Extensions.TestContextBaseRenderExtensions.RenderInsideRenderTree[TComponent](TestContextBase testContext, RenderFragment renderFragment) in /_/src/bunit.core/Extensions/TestContextBaseRenderExtensions.cs:line 25
     at Bunit.TestContext.Render[TComponent](RenderFragment renderFragment) in /_/src/bunit.web/TestContext.cs:line 70
     at Bunit.TestContext.RenderComponent[TComponent](ComponentParameter[] parameters) in /_/src/bunit.web/TestContext.cs:line 40
     at Cao.CatOs.Blazor.Tests.MultilingualComponent.Should_ReturnMultilingualExportHeader_ForRenderedComponent() in C:\CAT-OS\Cao.CatOs.Blazor.Tests\MultilingualComponent.cs:line 38
  

  The question I have is how do I inject / mock the object Volo.Abp.Authorization.IAbpAuthorizationService, so my test picks it up? Just to be clear I am using BUnit, and my razor component inherits from the AbpComponentBase. This is why when I run the page IABPAuthorizationService exists, however in a unit test it is null.

  What I would like is an example of how to take a standard Razor componet that properly implements the ABP framework and write a unit test for it using BUnit. I am sure you will find there are quite a few items that need to be mocked and injected, in order to get it to work properly. Do you have an example I can use to follow along?

  Thanks,

  Jesse

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• 

  0

  maliming created 3 years ago

  Support Team Fullstack Developer

  We may need to rewrite some BUnit services, can you share a simple project? liming.ma@volosoft.com

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• 

  0

  Jesse.Thomas@condoauthorityontario.ca created 3 years ago

  Thanks Maliming.... I am going to send you a test project shortly with details on what exactly is failing.

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  0

  maliming created 3 years ago

  Support Team Fullstack Developer

  hi

  Please check the commit of init2.

  https://github.com/maliming/CATOSTest/commits/main

  https://github.com/maliming/CATOSTest/invitations

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• 

  0

  Jesse.Thomas@condoauthorityontario.ca created 3 years ago

  Thanks Maliming! This helped alot, and fixed my issues....

  Jesse

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