Nunit 3 Console when running against 2.6.2 unit tests

[JamieClayton]

I'm working on migrating from Nunit 2.6.2 to 3.x for our codebase. While testing the new command line arguments for nunit3-console.exe I found it difficult to resolve the path to the nunit.framework.dll 2.6.2 files that are stored in our code repository (rather than installed via MSI or nuget etc).

I was trying to determine how the .\addins\nunit.v2.driver.dll interacted with a particular edition of nunit 2.x. Do I need to

1. copy that edition of nunit into the addin's folder or
2. is there a console argument or
3. do I modify a *.config file setting for a relative path from the nunit3-console.exe to Nunit.Framework.dll (2.6.2) in our source control repository?
4. should we migrate the current v2.6.2 unit tests to v.2.6.4 as debugging the current github nunit.sln in Visual Studio highlighted that v2.6.4 gets copied to the addins folder.

Console Exception
`System.IO.FileLoadException: Could not load file or assembly 'nunit.framework, Version=2.6.2.12296, Culture=neutral, PublicKeyToken=96d09a1eb7f44a77' or one of its dependencies. The located assembly's manifest definition does not match the
assembly reference. (Exception from HRESULT: 0x80131040)
File name: 'nunit.framework, Version=2.6.2.12296, Culture=neutral, PublicKeyToken=96d09a1eb7f44a77'

Server stack trace:
at System.ModuleHandle.ResolveType(RuntimeModule module, Int32 typeToken, IntPtr* typeInstArgs, Int32 typeInstCount, IntPtr* methodInstArgs, Int32 methodInstCount, ObjectHandleOnStack type)
at System.ModuleHandle.ResolveTypeHandleInternal(RuntimeModule module, Int32 typeToken, RuntimeTypeHandle[] typeInstantiationContext, RuntimeTypeHandle[] methodInstantiationContext)
at System.Reflection.RuntimeModule.ResolveType(Int32 metadataToken, Type[] genericTypeArguments, Type[] genericMethodArguments)
at System.Reflection.CustomAttribute.FilterCustomAttributeRecord(CustomAttributeRecord caRecord, MetadataImport scope, Assembly& lastAptcaOkAssembly, RuntimeModule decoratedModule, MetadataToken decoratedToken, RuntimeType attributeFilte
rType, Boolean mustBeInheritable, Object[] attributes, IList derivedAttributes, RuntimeType& attributeType, IRuntimeMethodInfo& ctor, Boolean& ctorHasParameters, Boolean& isVarArg)
at System.Reflection.CustomAttribute.GetCustomAttributes(RuntimeModule decoratedModule, Int32 decoratedMetadataToken, Int32 pcaCount, RuntimeType attributeFilterType, Boolean mustBeInheritable, IList derivedAttributes, Boolean isDecorate
dTargetSecurityTransparent)
at System.Reflection.CustomAttribute.GetCustomAttributes(RuntimeType type, RuntimeType caType, Boolean inherit)
at NUnit.Core.CoreExtensions.InstallAdhocExtensions(Assembly assembly)
at NUnit.Core.Builders.TestAssemblyBuilder.Load(String path)
at NUnit.Core.Builders.TestAssemblyBuilder.Build(String assemblyName, Boolean autoSuites)
at NUnit.Core.TestSuiteBuilder.BuildSingleAssembly(TestPackage package)
at NUnit.Core.SimpleTestRunner.Load(TestPackage package)
at NUnit.Core.RemoteTestRunner.Load(TestPackage package)
at System.Runtime.Remoting.Messaging.StackBuilderSink._PrivateProcessMessage(IntPtr md, Object[] args, Object server, Object[]& outArgs)
at System.Runtime.Remoting.Messaging.StackBuilderSink.SyncProcessMessage(IMessage msg)

Exception rethrown at [0]:
at System.Runtime.Remoting.Proxies.RealProxy.HandleReturnMessage(IMessage reqMsg, IMessage retMsg)
at System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke(MessageData& msgData, Int32 type)
at NUnit.Core.TestRunner.Load(TestPackage package)
at NUnit.Engine.Drivers.NUnit2FrameworkDriver.Load(String testAssemblyPath, IDictionary`2 settings)
at NUnit.Engine.Runners.DirectTestRunner.LoadPackage()
at NUnit.Engine.Runners.AbstractTestRunner.Load()
at System.Runtime.Remoting.Messaging.StackBuilderSink._PrivateProcessMessage(IntPtr md, Object[] args, Object server, Object[]& outArgs)
at System.Runtime.Remoting.Messaging.StackBuilderSink.SyncProcessMessage(IMessage msg)

Exception rethrown at [1]:
at System.Runtime.Remoting.Proxies.RealProxy.HandleReturnMessage(IMessage reqMsg, IMessage retMsg)
at System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke(MessageData& msgData, Int32 type)
at NUnit.Engine.ITestEngineRunner.Load()
at NUnit.Engine.Runners.ProcessRunner.LoadPackage()
at NUnit.Engine.Runners.AbstractTestRunner.Load()
at NUnit.Engine.Runners.AggregatingTestRunner.LoadPackage()
at NUnit.Engine.Runners.AbstractTestRunner.Load()
at NUnit.Engine.Runners.MasterTestRunner.LoadPackage()
at NUnit.Engine.Runners.AbstractTestRunner.EnsurePackageIsLoaded()
at NUnit.Engine.Runners.MasterTestRunner.NUnit.Engine.ITestRunner.Run(ITestEventListener listener, TestFilter filter)
at NUnit.ConsoleRunner.ConsoleRunner.RunTests(TestPackage package, TestFilter filter)
at NUnit.ConsoleRunner.Program.Main(String[] args)`

[rprouse]

I am closing this, it really isn't a documentation issue, just a question. We will track it in nunit/nunit#1291