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JustMock supports .ReturnsAsync() when arranging standard mocks, however I am unable to find a way to get this same behavior when Automocking with a MockingContainer<T>.

A solution I've found is to wrap the return value in Task.FromResult<T>(). This fulfills the expected Task<T> return type of the async function, however the syntax is a bit clunky.

service .Arrange<IRepository>(r => r.SomeAsyncMethod("input")) .Returns(Task.FromResult<ISomeModel>(resultModel));

Ideally, I would like to avoid building the Task<T> return values manually and just rely on .ReturnsAsync() to handle the conversion.

service .Arrange<IRepository>(r => r.SomeAsyncMethod("input")) .ReturnsAsync(resultModel);

It's possible the APIs just aren't there, but I want to ensure I'm not just missing some special syntax to get it working.

Tsvetko
Telerik team
 answered on 03 Jan 2024
2 answers
110 views

Hello,

I have the following code, as a test, but it is not working at all.

var timer1 = new Timer(500);
Mock.Arrange(() => new Timer(Arg.IsAny<double>())).Returns(timer1);
var sameTimer = new Timer(200);
Assert.AreEqual(timer1,sameTimer);

 

The use case, is that we have lots of timers in our legacy code that need mocking.  They are not injected so I would like to override the constructor if possible and return a different object.   Is this doable?

Thanks 

Phillip Davis

Phillip
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Iron
 answered on 05 Jun 2023
0 answers
252 views

I have a test case to test my EF repository getallasync call as follows:

// Arrange
var systemsData = new List<SystemEntity>
{
new SystemEntity { SystemId = 1, Full_Year_Standings = true, Season_StartDate = DateTime.Now, Season_EndDate = DateTime.Now },
new SystemEntity { SystemId = 2, Full_Year_Standings = false, Season_StartDate = DateTime.Now, Season_EndDate = DateTime.Now },
new SystemEntity { SystemId = 3, Full_Year_Standings = true, Season_StartDate = DateTime.Now, Season_EndDate = DateTime.Now }
};

var mockContext = Mock.Create<BetCenterContext>(Behavior.Loose);
Mock.Arrange(() => mockContext.Set<SystemEntity>()).ReturnsCollection(systemsData);

var systemRepository = new SystemRepository(mockContext);

// Act
var result = await systemRepository.GetAllAsync();

 

Calling the following method:

 

public async Task<List<SystemEntity>> GetAllAsync()
{
var collToReturn = await _context.Set<SystemEntity>().ToListAsync();

return collToReturn;
}

The arranged mock returns a null result and throws InvalidOperationException - The source 'IQueryable' doesn't IAsyncEnumerable...'

How do I arrange the mock to return the correct value?

     
Edward
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 asked on 05 Jun 2023
1 answer
143 views

We are adding UI unit tests for our Blazor project and diving into evaluating your JustMock and your testing framework. i am trying to create a test that invokes AddReleaseAsync method, but nothing that I have tried avoids a compile error, that I am showing below. We have a form that has a Blazor grid, initially populated with the data returned from GetReleasesAsync method, and then we add a new row using   AddReleaseAsync expecting to see an additional data row. A simple test that uses only GetReleasesAsync  method and checks that 2 data rows are returned works fine. But I can't compile the below test for adding a row. How do I mock an async method returning an anonymous type? We are using a pattern returning <string message, IEnumerable<T> data> quite extensively in our services to pass info/error Message and Data to the UI. Is it possible to mock the AddReleaseAsync and if so, how ? 

P.S. I understand that test is not quite 'complete', but I can't get past the compile error to properly write the test


Given this interface

    public interface IApiLogic
    {

        Task<IEnumerable<Release>> GetReleasesAsync();  // gets all data
        Task<(string Message, IEnumerable<Release>? Releases)> AddReleaseAsync(Release release);  
    }

And the below test method, 

    

      [TestMethod]
        public void CanAddnewRelease()
        {
            // Arrange
            var apiMock = Mock.Create<IApiLogic>();
            Mock.Arrange(() => apiMock.GetReleasesAsync()).ReturnsAsync(DummyReleases(2));
           

            var response =  new {  Message = "ok", Releases =  DummyReleases(3)};

            // 1. Tried this (and many other things, but always get a similar error)
            Mock.Arrange(() => apiMock.AddReleaseAsync(Arg.IsAny<Release>())).ReturnsAsync(response);

/* I get compile error for the above line

Error CS1503 Argument 2: cannot convert from '<anonymous type: string Message, System.Collections.Generic.IEnumerable<SDCSSPxte.Shared.Entities.Release> Releases>' to 'System.Func<(string Message, System.Collections.Generic.IEnumerable<SDCSSPxte.Shared.Entities.Release> Releases)>'

*/

            // 2. Tried this 

            Mock.Arrange(() => apiMock.AddReleaseAsync(Arg.IsAny<Release>())).Returns(Task.FromResult<(string Message, IEnumerable<Release>? Releases)>(response));

/* I get compile error on the above line

Error CS1503 Argument 1: cannot convert from '<anonymous type: string Message, System.Collections.Generic.IEnumerable<SDCSSPxte.Shared.Entities.Release> Releases>' to '(string Message, System.Collections.Generic.IEnumerable<SDCSSPxte.Shared.Entities.Release>? Releases)'

*/

            var ctx = new Bunit.TestContext();
            ctx.JSInterop.Mode = JSRuntimeMode.Loose;
            ctx.Services.AddSingleton<IApiLogic>(apiMock);
            ctx.Services.AddTelerikBlazor();

            var rootComponentMock = Mock.Create<TelerikRootComponent>();

            // Act
            var cut = ctx.RenderComponent<SDCSSPxte.Client.Pages.Admin.Release>(parameters => parameters.AddCascadingValue<TelerikRootComponent>(rootComponentMock));
            var addButton = cut.FindAll(".k-button-text")[0];
            addButton.Click();


            // Assert
            var dataRows = cut.FindAll("tbody tr");
            dataRows.Count.Should().Be(3);
            dataRows[0].ChildNodes.FirstOrDefault(n => n.TextContent.Trim() == "ReleaseComment for r1").Should().NotBeNull();
            dataRows[1].ChildNodes.FirstOrDefault(n => n.TextContent.Trim() == "ReleaseComment for r2").Should().NotBeNull();
            dataRows[2].ChildNodes.FirstOrDefault(n => n.TextContent.Trim() == "ReleaseComment for r3").Should().NotBeNull();     

  }

//  You should be able to infer what the Release class is, it is in a  separate project, SDCSSPxte.Shared.Entities. namespace)

        private List<Release> DummyReleases (int count)
        {
            List<Release> releases = new();
            for (int c=0; c < count; c++)
            {
                releases.Add(new Release()
                {
                    ReleaseKey = 1,
                    ReleaseDate = DateTime.Now.Date,
                    ReleasePackageName = $"ReleasePackageName{c+1}",
                    Comment = $"ReleaseComment for r{c+1}"
                });
            }
            return releases;
        }

 


Ivo
Telerik team
 answered on 25 Apr 2023
2 answers
119 views

Hi, 

I am trying to run the unit test for my .net 6 and want to see the code coverage using "Analyse Code Coverage for all Tests" in VS2022.

it successfully run all all test cases when I "run all Tests" but when I use "Analyse Code Coverage for all Tests" to run and see the code coverage, there are some test case failed throwing ThrowElevatedMockingException as below.

 Message: 
Telerik.JustMock.Core.ElevatedMockingException : Cannot mock 'System.Threading.Tasks.Task`1[System.Collections.Generic.List`1[AppHub.SingleView.AmazonFireStickPromo.Models.AccountPromoToken]] GetAccountPromoTokensAsync(System.String)'. The profiler must be enabled to mock, arrange or execute the specified target.
Detected active third-party profilers:
* {324F817A-7420-4E6D-B3C1-143FBED6D855} (from process environment)
Disable the profilers or link them from the JustMock configuration utility. Restart the test runner and, if necessary, Visual Studio after linking.

  Stack Trace: 
ProfilerInterceptor.ThrowElevatedMockingException(MemberInfo member)
MocksRepository.CheckMethodInterceptorAvailable(IMatcher instanceMatcher, MethodBase method)
MocksRepository.AddArrange(IMethodMock methodMock)
MocksRepository.Arrange[TMethodMock](Object instance, MethodBase method, Object[] arguments, Func`1 methodMockFactory)
<>c__DisplayClass24_0`1.<Arrange>b__0()
ProfilerInterceptor.GuardInternal[T](Func`1 guardedAction)
NonPublicExpectation.Arrange[TReturn](Object target, String memberName, Object[] args)
PromoCodeManagementServiceTests.GetAllEmailStatusesAsync_WithTokenFromAccount_ExpectedListEmailStatus() line 145
GenericAdapter`1.GetResult()
AsyncToSyncAdapter.Await(Func`1 invoke)
TestMethodCommand.RunTestMethod(TestExecutionContext context)
TestMethodCommand.Execute(TestExecutionContext context)
<>c__DisplayClass1_0.<Execute>b__0()
DelegatingTestCommand.RunTestMethodInThreadAbortSafeZone(TestExecutionContext context, Action action)

I think run all test is successful as I use specify env.runsettings in my project file (attached file). 

but the test run in  "Analyse Code Coverage for all Tests" failed in some methods.

Package I used

    <PackageReference Include="JustMock.Commercial" Version="2023.1.117.1" />

Can someone help me to fix this one ?

Thanks

Minh
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Iron
 updated answer on 20 Apr 2023
1 answer
96 views

Hello

I generate a syntax tree which I will format with Formatter.Format() from the package Microsoft.CodeAnalysis.CSharp.Workspaces 4.4.0 and .NET 6. A test exists where the formatter is used but when the JustMock profiler is enabled an InvalidProgramException is thrown. When the profiler is disabled everything works fine. It fails on Windows and on Linux.

Exception

  Message: 
System.InvalidProgramException : Common Language Runtime detected an invalid program.

  Stack Trace: 
ContextIntervalTree`2.ctor(TIntrospector& introspector)
FormattingContext.ctor(AbstractFormatEngine engine, TokenStream tokenStream)
AbstractFormatEngine.CreateFormattingContext(TokenStream tokenStream, CancellationToken cancellationToken)
AbstractFormatEngine.Format(CancellationToken cancellationToken)
CSharpSyntaxFormatting.Format(SyntaxNode node, SyntaxFormattingOptions options, IEnumerable`1 formattingRules, SyntaxToken startToken, SyntaxToken endToken, CancellationToken cancellationToken)
AbstractSyntaxFormatting.GetFormattingResult(SyntaxNode node, IEnumerable`1 spans, SyntaxFormattingOptions options, IEnumerable`1 rules, CancellationToken cancellationToken)
Formatter.GetFormattingResult(SyntaxNode node, IEnumerable`1 spans, Workspace workspace, OptionSet options, IEnumerable`1 rules, CancellationToken cancellationToken)
Formatter.Format(SyntaxNode node, IEnumerable`1 spans, Workspace workspace, OptionSet options, IEnumerable`1 rules, CancellationToken cancellationToken)
Formatter.Format(SyntaxNode node, Workspace workspace, OptionSet options, CancellationToken cancellationToken)
UnitTest1.Test1() line 23

Reproduction

You can reproduce this by writing an unit test for that (I used xUnit):

        [Fact]
        public void Test1()
        {
            var classText = @"using System; namespace TestNameSpace.Orders { public class Order
                            {
                                public Guid Id { get; set; }
                            }
                        }";

            var syntaxTree = CSharpSyntaxTree.ParseText(classText);
            var workspace = new AdhocWorkspace();

            var formattedClassText = Formatter.Format(syntaxTree.GetRoot(), workspace).ToFullString();

            var expected = @"using System;
namespace TestNameSpace.Orders
{
    public class Order
    {
        public Guid Id { get; set; }
    }
}";
            Assert.Equal(expected, formattedClassText);
        }
    }

System Info

JustMock

See attachments. We do not use the free edition.

.NET

dotnet --info
.NET SDK:
 Version:   7.0.200
 Commit:    534117727b

Runtime Environment:
 OS Name:     Windows
 OS Version:  10.0.19045
 OS Platform: Windows
 RID:         win10-x64
 Base Path:   C:\Program Files\dotnet\sdk\7.0.200\

Host:
  Version:      7.0.3
  Architecture: x64
  Commit:       0a2bda10e8

.NET SDKs installed:
  6.0.406 [C:\Program Files\dotnet\sdk]
  7.0.200 [C:\Program Files\dotnet\sdk]

.NET runtimes installed:
  Microsoft.AspNetCore.App 6.0.14 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 7.0.3 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
  Microsoft.NETCore.App 6.0.14 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
  Microsoft.NETCore.App 7.0.3 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
  Microsoft.WindowsDesktop.App 6.0.14 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
  Microsoft.WindowsDesktop.App 7.0.3 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]

Other architectures found:
  x86   [C:\Program Files (x86)\dotnet]
    registered at [HKLM\SOFTWARE\dotnet\Setup\InstalledVersions\x86\InstallLocation]

Environment variables:
  Not set

global.json file:
  Not found

Learn more:
  https://aka.ms/dotnet/info

Download .NET:
  https://aka.ms/dotnet/download
Ivo
Telerik team
 answered on 09 Mar 2023
2 answers
197 views

Hi there

We are trying to move our current build agents from Windows to Linux (Ubuntu 20.04) for all our dotnet6.0 applications and trying to integrate the JustMock Profiler on this machine because we depend on it in several tests.

Therefore, we followed your integration article "JustMock Integration on Linux".

We have copied the Profiler binaries to the build agent and referencing it through the environment variable:

root@8d248b92b005:/azp/Backend# printenv | grep 'CORE\|JUST'
CORECLR_PROFILER_PATH=/opt/TelerikJustMock/JustMock_2022_1_223_1_Dev/Libraries/CodeWeaver/64/libTelerik.CodeWeaver.Profiler.so
CORECLR_PROFILER={B7ABE522-A68F-44F2-925B-81E7488E9EC0}
JUSTMOCK_INSTANCE=1
CORECLR_ENABLE_PROFILING=1

The csproj definition for referencing the JustMock library looks (at the moment) like the following:

...
<ItemGroup>
    <Reference Include="Telerik.JustMock">
        <HintPath Condition="Exists('C:\Program Files (x86)\Progress\Telerik JustMock\Libraries\netcoreapp2.0\Telerik.JustMock.dll')">C:\Program Files (x86)\Progress\Telerik JustMock\Libraries\netcoreapp2.0\Telerik.JustMock.dll</HintPath>
        <HintPath Condition="Exists('/opt/TelerikJustMock/JustMock_2022_1_223_1_Dev/Libraries/netcoreapp2.0/Telerik.JustMock.dll')">/opt/TelerikJustMock/JustMock_2022_1_223_1_Dev/Libraries/netcoreapp2.0/Telerik.JustMock.dll</HintPath>
        <Private>True</Private>
    </Reference>
</ItemGroup>
...

In the tests we are calling the following method to check for the Profiler to be enabled:

public class Test_JustMockProfiler_Enabled
{
	[Fact]
	public void ProfilerMustBeEnabled()
	{
		Mock.IsProfilerEnabled.Should().BeTrue();
	}
}

Then running the tests with the 'dotnet test' command:

dotnet test /path/to/Tests.dll --no-build --no-restore -l:trx --results-directory ./TestResults/

But still we get the following error:

Error Message:
   Expected Mock.IsProfilerEnabled to be true, but found False.

Installed dotnet:

root@8d248b92b005:/azp/Backend# dotnet --info
.NET SDK (reflecting any global.json):
 Version:   6.0.402
 Commit:    6862418796

Runtime Environment:
 OS Name:     ubuntu
 OS Version:  20.04
 OS Platform: Linux
 RID:         ubuntu.20.04-x64
 Base Path:   /usr/share/dotnet/sdk/6.0.402/

global.json file:
  Not found

Host:
  Version:      6.0.10
  Architecture: x64
  Commit:       5a400c212a

.NET SDKs installed:
  6.0.402 [/usr/share/dotnet/sdk]

.NET runtimes installed:
  Microsoft.AspNetCore.App 6.0.10 [/usr/share/dotnet/shared/Microsoft.AspNetCore.App]
  Microsoft.NETCore.App 6.0.10 [/usr/share/dotnet/shared/Microsoft.NETCore.App]

 

Is there anything we are missing or doing wrong? 
How do we properly enable the Profile on Linux to run in 'dotnet test'?

Thanks for your help in advance, cheers.

Sandro
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Iron
 updated answer on 13 Jan 2023
1 answer
163 views

I've run into an interesting problem with JustMock. In a nutshell, if you use the C# using declaration (as opposed to a using block), and have JustMock mocking anything in the same assembly, the runtime will throw an InvalidProgramException.

I was able to isolate it down to the narrowest possible case as a proof of point. Using NUnit as the testing framework (I haven't tried with others), and a reference to JustMock, the following code will compile successfully, but at runtime will throw an InvalidOperationException when trying to run the unit test.

[TestFixture]
public class Fixture
{
    public interface ITest { }

    public class TestClass : IDisposable
    {
        public void Dispose()
        {
        }
    }

    [Test]
    public async Task Test()
    {
        ITest mock = Mock.Create<ITest>();
        using TestClass test = new();
    }
}

I've played with various permutations of the problem, and it happen on .NET 4.8 (which we are using) as well as .NET 6.0, and with the version of JustMock we are using (2020.2.616.1) as well as the latest commercial release (2022.3.912.3).

For the problem to occur, the using declaration and the mock creation need not be in the same test, or even in the same fixture, but the test with the using declaration will always fail with the exception. If the async modifier is removed from the unit test, the problem goes away.

Turning off the profiler makes the problem go away, as does turning off the Automatic Mock Repository Cleanup Enabled flag in the JustMock options.

I've attached a simple .NET 6.0 based project that demonstrates the issue.

Ivo
Telerik team
 answered on 12 Oct 2022
1 answer
328 views

Hi there

We are facing an issue on our on-premise Azure DevOps build agents, where we have JustMock installed, since the version 2.0.13 from last Thursday 6th Oct. 2022 but also with the today's version 2.0.14.

Exception:

[xUnit.net 00:00:02.79]       Telerik.JustMock.Core.ElevatedMockingException : Cannot mock 'System.DateTime'. The profiler must be enabled to mock, arrange or execute the specified target.
[xUnit.net 00:00:02.79]       Stack Trace:
[xUnit.net 00:00:02.79]            at Telerik.JustMock.Core.ProfilerInterceptor.ThrowElevatedMockingException(MemberInfo member)
[xUnit.net 00:00:02.79]            at Telerik.JustMock.Core.MocksRepository.InterceptStatics(Type type, MockCreationSettings settings, Boolean mockStaticConstructor)
[xUnit.net 00:00:02.79]            at Telerik.JustMock.Core.CallPatternCreator.FromExpression(MocksRepository repository, Expression expr)
[xUnit.net 00:00:02.79]            at Telerik.JustMock.Core.MocksRepository.Arrange[TMethodMock](Expression expression, Func`1 methodMockFactory)
[xUnit.net 00:00:02.79]            at Telerik.JustMock.Mock.<>c__DisplayClass1_0`1.<Arrange>b__0()
[xUnit.net 00:00:02.79]            at Telerik.JustMock.Core.ProfilerInterceptor.GuardInternal[T](Func`1 guardedAction)
[xUnit.net 00:00:02.79]            at Telerik.JustMock.Mock.Arrange[TResult](Expression`1 expression)

We are using the task JustMockVSTest@2 and have no additional configurations for the JustMock Profiler set, like described in your integration guide: https://docs.telerik.com/devtools/justmock/integration/continuous-integration/tfs-azure/azure-devops

On the system there is the Profiler installed under "C:\Program Files (x86)\Progress\Telerik JustMock\Libraries\CodeWeaver\<bitness>\Telerik.CodeWeaver.Profiler.dll"

We see that the task is initializing the path to the Profiler (32bit and 64bit) to the $(System.DefaultWorkingDirectory) like:

Starting: VsTest - testAssemblies
==============================================================================
Task         : Telerik JustMock VSTest v.2
Description  : Use VSTest runner to run tests that are mocked with Telerik JustMock.
Version      : 2.7.1
Author       : Telerik
Help         : https://docs.microsoft.com/azure/devops/pipelines/tasks/test/vstest
==============================================================================
SystemVssConnection exists true
Setting up JustMock
======================================================
The specified path to 32 bit JustMock profiler is: D:\azagent\<organisation>\A1\_work\<build>\s
The specified path to 64 bit JustMock profiler is: D:\azagent\<organisation>\A1\_work\<build>\s
SystemVssConnection exists true
Running tests using vstest.console.exe runner.
======================================================

Before the Profiler was initialized with null:

Starting: VsTest - testAssemblies
==============================================================================
Task         : Telerik JustMock VSTest v.2
Description  : Use VSTest runner to run tests that are mocked with Telerik JustMock.
Version      : 2.6.1
Author       : Telerik
Help         : https://docs.microsoft.com/azure/devops/pipelines/tasks/test/vstest
==============================================================================
SystemVssConnection exists true
SystemVssConnection exists true
Setting up JustMock
======================================================
The specified path to 32 bit JustMock profiler is: null
The specified path to 64 bit JustMock profiler is: null
SystemVssConnection exists true
Running tests using vstest.console.exe runner.
======================================================

Is there anything we have to configure, like the absolute/relative path to the Profiler? Or is this a bug within the new release?

Thanks for your help.

Cheers

 
Ivo
Telerik team
 answered on 11 Oct 2022
1 answer
304 views

In Visual Studio 2022, the first quick action is often "Create Mock". As this is used in the overlay when hovering over a method, I see "JMA001" quite often, which is not helpful when writing non-test code.

I know that I could create a .editorconfig file to suppress individual hints for every project I work on, but how can I prevent the JustMock hints from being used in the quick actions completely across projects?

Ivo
Telerik team
 answered on 12 Aug 2022
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