I am unable to debug my unit test .NET project. I keep getting several of these errors, and it is super slow as code tries to execute every line. I have rebooted and restarted VS 2019 several times, reinstalled JustMock but the error won't go away.

Visual Studio Output windows shows following repeated errors:

Exception thrown calling IDebugWindowPlugin plugin: System.NullReferenceException: Object reference not set to an instance of an object.

I have a class, which has a private async method, which has a local function, like the following example

internal class TestClass

{

 ......

        private async Task<bool> TestPrivateMethod()
        {
            var x = await TestLocalFunction();
            return x;

            async Task<bool> TestLocalFunction()
            {
                await Task.Delay(5);
                return true;
            }
 }

When I try to mock the local function, thows an error "System.MissingMemberException : C# 7 local function 'TestLocalFunction' with the given signature was not found inside method 'TestPrivateMethod'"

var testClassInstance = Mock.Create<TestClass>(Behavior.CallOriginal);

Mock.Local.Function.Arrange<Task<bool>>(testClassInstance, "TestPrivateMethod", "TestLocalFunction").Returns(Task.FromResult(true));

When a breakpoint is added inside an async test that uses JustMock the debugger is failing to hit it. 

To reproduce the issue follow the next steps:

1. Open the attached project

2. Create a breakpoint at the first arrangement in the async test method.

3. Start debugging the async test

Result: the breakpoint is not hit.

The issue is observed for both .NET Core and .NET Framework.

The issue is present when JustMock extension is installed and the debugger is launched inside unrelated projects, for example, a blank console app. The extension should detect JustMock references from project settings and automatically disable this feature when it becomes inapplicable. Optionally the extension could give the way to explicitly disable the debug window from popping up by toggling the menu item.

Integration with Visual Studio Enterprise Code Coverage does not work if the project refers Microsoft.NET.Test.Sdk package version 16.3 (and above). The test run fails with exception:

Telerik.JustMock.Core.ElevatedMockingException : Cannot mock '<type to mock goes here>'. The profiler must be enabled to mock, arrange or execute the specified target.
    Detected active third-party profilers:
    * C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\Team Tools\Dynamic Code Coverage Tools\amd64\covrun64.dll (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.

Currently, when the JustMock profiler is enabled it provides a performance hit on the test execution. This effect is expected because a profiler is involved.

What we can do is find a more optimized way of instrumenting the methods.

Currently, the support for code coverage in the JustMock Azure Pipeline task includes only projects targeting .NET Framework.

Implement support for projects targeting .NET Core.

Having the following COM interop class

[ClassInterface(ClassInterfaceType.None)]
[Guid("86332C4E-0BDE-46EC-94C5-0A946C33C682")]
[TypeLibType(TypeLibTypeFlags.FCanCreate)]
public class MyComObjectClass : IMyComObject, MyComObject
{
    public MyComObjectClass();

    [DispId(1)]
    public virtual string Echo(string message);
}

and the sample class that uses it:
public class MyComObjectClassProxy
{
    public string Echo(string message)
    {
        IMyComObject itf = null;
        try
        {
            itf = new MyComObjectClass();
            return itf.Echo(message);
        }
        finally
        {
            if (itf != null)
            {
                Marshal.ReleaseComObject(itf);
            }
        }
    }
}
When I try to call the arranged constructor I am getting an error "Cannot create instances of type requiring managed activation", the unit test code:
[TestMethod]
public void TestMethod1()
{
    var mock = Mock.Create<MyComObjectClass>();
    Mock.Arrange(() => new MyComObjectClass()).Returns(mock);

    var sut = new MyComObjectClassProxy();
    var actual = sut.Echo("Message");

    Assert.AreEqual(string.Empty, actual);
}

Hi

When enabling JUSTMOCK Profiler it stops a MS rdlc report to render.

I have attached a simple sample demonstrating the error.

The error that the render gives back is the following.

The definition of this report is not valid or supported by this version of Reporting Services. The report definition may have been created with a later version of Reporting Services, or contain content that is not well-formed or not valid based on Reporting Services schemas. Details: Deserialization failed: An attempt was made to load a program with an incorrect format. (Exception from HRESULT: 0x8007000B) Line 2, position 2.

I have tried to different target version of the .NET framework 4.5.2; 4.6.2, different platform targets "ANY,x86,x64", different VS IDE "2012, 2015", different Microsoft.ReportViewer.WinForm  ver. 11,12,14