I am writing some unit test for an ApiController. I continue to get multiple System.MissingMethodException exceptions for methods in the System.Web.Http namespace.
Message: System.MissingMethodException : Method not found: 'System.Net.Http.HttpRequestMessage System.Web.Http.ApiController.get_Request()'.
Message: System.MissingMethodException : Method not found: 'System.Threading.Tasks.Task`1 System.Web.Http.IHttpActionResult.ExecuteAsync(System.Threading.CancellationToken)'.
The test project compiles just fine, has the correct using statements, package references, and bindings. However, as soon as it tries to run, one of the above exceptions are thrown (whichever is first encountered, depending on how the code is structured). It may also be worth noting that when System.Web.Http methods are not used, the test project runs just fine.
I was hoping this question had my answer, but I cannot find any discrepancies. I have uninstalled/reinstalled multiple times. Verified both projects use the same version (5.2.7.0). Verified that version is being used via viewing the Modules during debug. And verified that the reference path for both projects point to the correct nuget packages folder:(...\Main\src\packages\Microsoft.AspNet.WebApi.Core.5.2.7\lib\net45\System.Web.Http.dll)
Below is the package and binding info, if anything else is needed please let me know. I've already wasted a couple days on this, any help would be greatly appreciated.
Main Project - packages.config
<?xml version="1.0" encoding="utf-8"?> <packages> <package id="AutoMapper" version="8.1.0" targetFramework="net461" /> <package id="EntityFramework" version="6.1.3" targetFramework="net461" /> <package id="log4net" version="2.0.8" targetFramework="net461" /> <package id="Microsoft.AspNet.OData" version="7.1.0" targetFramework="net461" /> <package id="Microsoft.AspNet.WebApi" version="5.2.7" targetFramework="net461" /> <package id="Microsoft.AspNet.WebApi.Client" version="5.2.7" targetFramework="net461" /> <package id="Microsoft.AspNet.WebApi.Core" version="5.2.7" targetFramework="net461" /> <package id="Microsoft.AspNet.WebApi.WebHost" version="5.2.7" targetFramework="net461" /> <package id="Microsoft.Extensions.DependencyInjection" version="1.0.0" targetFramework="net461" /> <package id="Microsoft.Extensions.DependencyInjection.Abstractions" version="1.0.0" targetFramework="net461" /> <package id="Microsoft.OData.Core" version="7.5.0" targetFramework="net461" /> <package id="Microsoft.OData.Edm" version="7.5.0" targetFramework="net461" /> <package id="Microsoft.Spatial" version="7.5.0" targetFramework="net461" /> <package id="Newtonsoft.Json" version="11.0.2" targetFramework="net461" /> <package id="NLog" version="4.2.3" targetFramework="net461" /> <package id="System.Collections" version="4.0.11" targetFramework="net461" /> <package id="System.Collections.Concurrent" version="4.0.12" targetFramework="net461" /> <package id="System.ComponentModel" version="4.0.1" targetFramework="net461" /> <package id="System.Diagnostics.Debug" version="4.0.11" targetFramework="net461" /> <package id="System.Globalization" version="4.0.11" targetFramework="net461" /> <package id="System.Linq" version="4.1.0" targetFramework="net461" /> <package id="System.Linq.Expressions" version="4.1.0" targetFramework="net461" /> <package id="System.Reflection" version="4.1.0" targetFramework="net461" /> <package id="System.Resources.ResourceManager" version="4.0.1" targetFramework="net461" /> <package id="System.Runtime.CompilerServices.Unsafe" version="4.5.2" targetFramework="net461" /> <package id="System.Runtime.Extensions" version="4.1.0" targetFramework="net461" /> <package id="System.Threading" version="4.0.11" targetFramework="net461" /> <package id="System.Threading.Tasks" version="4.0.11" targetFramework="net461" /> <package id="Unity" version="5.10.1" targetFramework="net461" /> </packages> Main Project - web.config bindings
<runtime> <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1"> <dependentAssembly> <assemblyIdentity name="Newtonsoft.Json" publicKeyToken="30ad4fe6b2a6aeed" /> <bindingRedirect oldVersion="0.0.0.0-11.0.0.0" newVersion="11.0.0.0" /> </dependentAssembly> <dependentAssembly> <assemblyIdentity name="System.Net.Http.Formatting" publicKeyToken="31bf3856ad364e35" culture="neutral" /> <bindingRedirect oldVersion="0.0.0.0-5.2.7.0" newVersion="5.2.7.0" /> </dependentAssembly> <dependentAssembly> <assemblyIdentity name="System.Web.Http" publicKeyToken="31bf3856ad364e35" culture="neutral" /> <bindingRedirect oldVersion="0.0.0.0-5.2.7.0" newVersion="5.2.7.0" /> </dependentAssembly> </assemblyBinding> </runtime> Test Project - packages.config
<?xml version="1.0" encoding="utf-8"?> <packages> <package id="AutoMapper" version="8.1.0" targetFramework="net461" /> <package id="Castle.Core" version="4.3.1" targetFramework="net461" /> <package id="EntityFramework" version="6.1.3" targetFramework="net461" /> <package id="log4net" version="2.0.8" targetFramework="net461" /> <package id="Microsoft.AspNet.OData" version="7.1.0" targetFramework="net461" /> <package id="Microsoft.AspNet.WebApi.Client" version="5.2.7" targetFramework="net461" /> <package id="Microsoft.AspNet.WebApi.Core" version="5.2.7" targetFramework="net461" /> <package id="Microsoft.Extensions.DependencyInjection" version="1.0.0" targetFramework="net461" /> <package id="Microsoft.Extensions.DependencyInjection.Abstractions" version="1.0.0" targetFramework="net461" /> <package id="Microsoft.OData.Core" version="7.5.0" targetFramework="net461" /> <package id="Microsoft.OData.Edm" version="7.5.0" targetFramework="net461" /> <package id="Microsoft.Spatial" version="7.5.0" targetFramework="net461" /> <package id="Moq" version="4.10.1" targetFramework="net461" /> <package id="netDumbster" version="2.0.0.4" targetFramework="net461" /> <package id="Newtonsoft.Json" version="11.0.2" targetFramework="net461" /> <package id="NUnit" version="2.6.4" targetFramework="net461" /> <package id="NUnitTestAdapter" version="1.2" targetFramework="net461" /> <package id="System.Collections" version="4.0.11" targetFramework="net461" /> <package id="System.Collections.Concurrent" version="4.0.12" targetFramework="net461" /> <package id="System.ComponentModel" version="4.0.1" targetFramework="net461" /> <package id="System.Diagnostics.Debug" version="4.0.11" targetFramework="net461" /> <package id="System.Globalization" version="4.0.11" targetFramework="net461" /> <package id="System.Linq" version="4.1.0" targetFramework="net461" /> <package id="System.Linq.Expressions" version="4.1.0" targetFramework="net461" /> <package id="System.Reflection" version="4.1.0" targetFramework="net461" /> <package id="System.Resources.ResourceManager" version="4.0.1" targetFramework="net461" /> <package id="System.Runtime.CompilerServices.Unsafe" version="4.5.2" targetFramework="net461" /> <package id="System.Runtime.Extensions" version="4.1.0" targetFramework="net461" /> <package id="System.Threading" version="4.0.11" targetFramework="net461" /> <package id="System.Threading.Tasks" version="4.0.11" targetFramework="net461" /> <package id="System.Threading.Tasks.Extensions" version="4.5.1" targetFramework="net461" /> </packages> Test Project - app.config bindings
<runtime> <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1"> <dependentAssembly> <assemblyIdentity name="Newtonsoft.Json" publicKeyToken="30ad4fe6b2a6aeed" culture="neutral" /> <bindingRedirect oldVersion="0.0.0.0-11.0.0.0" newVersion="11.0.0.0" /> </dependentAssembly> <dependentAssembly> <assemblyIdentity name="System.Web.Http" publicKeyToken="31bf3856ad364e35" culture="neutral" /> <bindingRedirect oldVersion="0.0.0.0-5.2.7.0" newVersion="5.2.7.0" /> </dependentAssembly> <dependentAssembly> <assemblyIdentity name="System.Net.Http.Formatting" publicKeyToken="31bf3856ad364e35" culture="neutral" /> <bindingRedirect oldVersion="0.0.0.0-5.2.7.0" newVersion="5.2.7.0" /> </dependentAssembly> <dependentAssembly> <assemblyIdentity name="System.Runtime.CompilerServices.Unsafe" publicKeyToken="b03f5f7f11d50a3a" culture="neutral" /> <bindingRedirect oldVersion="0.0.0.0-4.0.4.1" newVersion="4.0.4.1" /> </dependentAssembly> </assemblyBinding> </runtime> Edit - adding project refs and modules screen shot
Main Project - csproj references
<ItemGroup> <Reference Include="AutoMapper, Version=8.1.0.0, Culture=neutral, PublicKeyToken=be96cd2c38ef1005, processorArchitecture=MSIL"> <HintPath>..\packages\AutoMapper.8.1.0\lib\net461\AutoMapper.dll</HintPath> </Reference> <Reference Include="log4net, Version=2.0.8.0, Culture=neutral, PublicKeyToken=669e0ddf0bb1aa2a, processorArchitecture=MSIL"> <HintPath>..\packages\log4net.2.0.8\lib\net45-full\log4net.dll</HintPath> </Reference> <Reference Include="EntityFramework, Version=6.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089, processorArchitecture=MSIL"> <HintPath>..\packages\EntityFramework.6.1.3\lib\net45\EntityFramework.dll</HintPath> </Reference> <Reference Include="EntityFramework.SqlServer, Version=6.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089, processorArchitecture=MSIL"> <HintPath>..\packages\EntityFramework.6.1.3\lib\net45\EntityFramework.SqlServer.dll</HintPath> </Reference> <Reference Include="Microsoft.AspNet.OData, Version=7.1.0.21120, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL"> <HintPath>..\packages\Microsoft.AspNet.OData.7.1.0\lib\net45\Microsoft.AspNet.OData.dll</HintPath> </Reference> <Reference Include="Microsoft.CSharp" /> <Reference Include="Microsoft.Extensions.DependencyInjection, Version=1.0.0.0, Culture=neutral, PublicKeyToken=adb9793829ddae60, processorArchitecture=MSIL"> <HintPath>..\packages\Microsoft.Extensions.DependencyInjection.1.0.0\lib\netstandard1.1\Microsoft.Extensions.DependencyInjection.dll</HintPath> </Reference> <Reference Include="Microsoft.Extensions.DependencyInjection.Abstractions, Version=1.0.0.0, Culture=neutral, PublicKeyToken=adb9793829ddae60, processorArchitecture=MSIL"> <HintPath>..\packages\Microsoft.Extensions.DependencyInjection.Abstractions.1.0.0\lib\netstandard1.0\Microsoft.Extensions.DependencyInjection.Abstractions.dll</HintPath> </Reference> <Reference Include="Microsoft.OData.Core, Version=7.5.0.20627, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL"> <HintPath>..\packages\Microsoft.OData.Core.7.5.0\lib\portable-net45+win8+wpa81\Microsoft.OData.Core.dll</HintPath> </Reference> <Reference Include="Microsoft.OData.Edm, Version=7.5.0.20627, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL"> <HintPath>..\packages\Microsoft.OData.Edm.7.5.0\lib\portable-net45+win8+wpa81\Microsoft.OData.Edm.dll</HintPath> </Reference> <Reference Include="Microsoft.Spatial, Version=7.5.0.20627, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL"> <HintPath>..\packages\Microsoft.Spatial.7.5.0\lib\portable-net45+win8+wpa81\Microsoft.Spatial.dll</HintPath> </Reference> <Reference Include="Newtonsoft.Json, Version=11.0.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed, processorArchitecture=MSIL"> <HintPath>..\packages\WellsFargo.Azure.ChannelSecure.3.0.0.12\lib\Newtonsoft.Json.dll</HintPath> </Reference> <Reference Include="NLog, Version=4.0.0.0, Culture=neutral, PublicKeyToken=5120e14c03d0593c, processorArchitecture=MSIL"> <HintPath>..\packages\WellsFargo.Azure.ChannelSecure.3.0.0.12\lib\NLog.dll</HintPath> </Reference> <Reference Include="SSORestIISModule, Version=3.0.0.9, Culture=neutral, PublicKeyToken=f8c74029db907226, processorArchitecture=MSIL"> <HintPath>..\packages\WellsFargo.Azure.ChannelSecure.3.0.0.12\lib\SSORestIISModule.dll</HintPath> </Reference> <Reference Include="System.Data.DataSetExtensions" /> <Reference Include="System.IO.Compression" /> <Reference Include="System.Net" /> <Reference Include="System.Net.Http" /> <Reference Include="System.Net.Http.Formatting, Version=5.2.7.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL"> <HintPath>..\packages\Microsoft.AspNet.WebApi.Client.5.2.7\lib\net45\System.Net.Http.Formatting.dll</HintPath> </Reference> <Reference Include="System.Runtime.CompilerServices.Unsafe, Version=4.0.4.1, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL"> <HintPath>..\packages\System.Runtime.CompilerServices.Unsafe.4.5.2\lib\netstandard2.0\System.Runtime.CompilerServices.Unsafe.dll</HintPath> </Reference> <Reference Include="System.Runtime.Serialization" /> <Reference Include="System.ServiceModel" /> <Reference Include="System.Transactions" /> <Reference Include="System.Web.DynamicData" /> <Reference Include="System.Web.Entity" /> <Reference Include="System.Web.ApplicationServices" /> <Reference Include="System.ComponentModel.DataAnnotations" /> <Reference Include="System" /> <Reference Include="System.Data" /> <Reference Include="System.Drawing" /> <Reference Include="System.Web" /> <Reference Include="System.Web.Extensions" /> <Reference Include="System.Web.Http, Version=5.2.7.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL"> <HintPath>..\packages\Microsoft.AspNet.WebApi.Core.5.2.7\lib\net45\System.Web.Http.dll</HintPath> </Reference> <Reference Include="System.Web.Http.WebHost, Version=5.2.7.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL"> <HintPath>..\packages\Microsoft.AspNet.WebApi.WebHost.5.2.7\lib\net45\System.Web.Http.WebHost.dll</HintPath> </Reference> <Reference Include="System.Xml" /> <Reference Include="System.Configuration" /> <Reference Include="System.Web.Services" /> <Reference Include="System.EnterpriseServices" /> <Reference Include="System.Xml.Linq" /> <Reference Include="Unity.Abstractions, Version=4.1.2.0, Culture=neutral, PublicKeyToken=489b6accfaf20ef0, processorArchitecture=MSIL"> <HintPath>..\packages\Unity.5.10.1\lib\net46\Unity.Abstractions.dll</HintPath> </Reference> <Reference Include="Unity.Container, Version=5.10.1.0, Culture=neutral, PublicKeyToken=489b6accfaf20ef0, processorArchitecture=MSIL"> <HintPath>..\packages\Unity.5.10.1\lib\net46\Unity.Container.dll</HintPath> </Reference> </ItemGroup> Test Project - csproj references
<ItemGroup> <Reference Include="AutoMapper, Version=8.1.0.0, Culture=neutral, PublicKeyToken=be96cd2c38ef1005, processorArchitecture=MSIL"> <HintPath>..\packages\AutoMapper.8.1.0\lib\net461\AutoMapper.dll</HintPath> </Reference> <Reference Include="Castle.Core, Version=4.0.0.0, Culture=neutral, PublicKeyToken=407dd0808d44fbdc, processorArchitecture=MSIL"> <HintPath>..\packages\Castle.Core.4.3.1\lib\net45\Castle.Core.dll</HintPath> </Reference> <Reference Include="EntityFramework, Version=6.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089, processorArchitecture=MSIL"> <HintPath>..\packages\EntityFramework.6.1.3\lib\net45\EntityFramework.dll</HintPath> </Reference> <Reference Include="EntityFramework.SqlServer, Version=6.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089, processorArchitecture=MSIL"> <HintPath>..\packages\EntityFramework.6.1.3\lib\net45\EntityFramework.SqlServer.dll</HintPath> </Reference> <Reference Include="log4net, Version=2.0.8.0, Culture=neutral, PublicKeyToken=669e0ddf0bb1aa2a, processorArchitecture=MSIL"> <HintPath>..\packages\log4net.2.0.8\lib\net45-full\log4net.dll</HintPath> </Reference> <Reference Include="Microsoft.AspNet.OData, Version=7.1.0.21120, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL"> <HintPath>..\packages\Microsoft.AspNet.OData.7.1.0\lib\net45\Microsoft.AspNet.OData.dll</HintPath> </Reference> <Reference Include="Microsoft.Extensions.DependencyInjection, Version=1.0.0.0, Culture=neutral, PublicKeyToken=adb9793829ddae60, processorArchitecture=MSIL"> <HintPath>..\packages\Microsoft.Extensions.DependencyInjection.1.0.0\lib\netstandard1.1\Microsoft.Extensions.DependencyInjection.dll</HintPath> </Reference> <Reference Include="Microsoft.Extensions.DependencyInjection.Abstractions, Version=1.0.0.0, Culture=neutral, PublicKeyToken=adb9793829ddae60, processorArchitecture=MSIL"> <HintPath>..\packages\Microsoft.Extensions.DependencyInjection.Abstractions.1.0.0\lib\netstandard1.0\Microsoft.Extensions.DependencyInjection.Abstractions.dll</HintPath> </Reference> <Reference Include="Microsoft.OData.Core, Version=7.5.0.20627, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL"> <HintPath>..\packages\Microsoft.OData.Core.7.5.0\lib\portable-net45+win8+wpa81\Microsoft.OData.Core.dll</HintPath> </Reference> <Reference Include="Microsoft.OData.Edm, Version=7.5.0.20627, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL"> <HintPath>..\packages\Microsoft.OData.Edm.7.5.0\lib\portable-net45+win8+wpa81\Microsoft.OData.Edm.dll</HintPath> </Reference> <Reference Include="Microsoft.Spatial, Version=7.5.0.20627, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL"> <HintPath>..\packages\Microsoft.Spatial.7.5.0\lib\portable-net45+win8+wpa81\Microsoft.Spatial.dll</HintPath> </Reference> <Reference Include="Moq, Version=4.10.0.0, Culture=neutral, PublicKeyToken=69f491c39445e920, processorArchitecture=MSIL"> <HintPath>..\packages\Moq.4.10.1\lib\net45\Moq.dll</HintPath> </Reference> <Reference Include="netDumbster, Version=2.0.0.4, Culture=neutral, PublicKeyToken=4a1d8c974aa1bd1c, processorArchitecture=MSIL"> <HintPath>..\packages\netDumbster.2.0.0.4\lib\net461\netDumbster.dll</HintPath> </Reference> <Reference Include="Newtonsoft.Json, Version=11.0.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed, processorArchitecture=MSIL"> <HintPath>..\packages\Newtonsoft.Json.11.0.2\lib\net45\Newtonsoft.Json.dll</HintPath> </Reference> <Reference Include="nunit.core, Version=2.6.3.13283, Culture=neutral, PublicKeyToken=96d09a1eb7f44a77, processorArchitecture=MSIL"> <HintPath>..\packages\NUnitTestAdapter.1.2\lib\nunit.core.dll</HintPath> <Private>False</Private> </Reference> <Reference Include="nunit.core.interfaces, Version=2.6.3.13283, Culture=neutral, PublicKeyToken=96d09a1eb7f44a77, processorArchitecture=MSIL"> <HintPath>..\packages\NUnitTestAdapter.1.2\lib\nunit.core.interfaces.dll</HintPath> <Private>False</Private> </Reference> <Reference Include="nunit.framework, Version=2.6.4.14350, Culture=neutral, PublicKeyToken=96d09a1eb7f44a77, processorArchitecture=MSIL"> <HintPath>..\packages\NUnit.2.6.4\lib\nunit.framework.dll</HintPath> </Reference> <Reference Include="nunit.util, Version=2.6.3.13283, Culture=neutral, PublicKeyToken=96d09a1eb7f44a77, processorArchitecture=MSIL"> <HintPath>..\packages\NUnitTestAdapter.1.2\lib\nunit.util.dll</HintPath> <Private>False</Private> </Reference> <Reference Include="NUnit.VisualStudio.TestAdapter, Version=1.2.0.0, Culture=neutral, PublicKeyToken=4cb40d35494691ac, processorArchitecture=MSIL"> <HintPath>..\packages\NUnitTestAdapter.1.2\lib\NUnit.VisualStudio.TestAdapter.dll</HintPath> <Private>False</Private> </Reference> <Reference Include="System" /> <Reference Include="System.ComponentModel.DataAnnotations" /> <Reference Include="System.Configuration" /> <Reference Include="System.Core" /> <Reference Include="System.Net.Http.Formatting, Version=5.2.7.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL"> <HintPath>..\packages\Microsoft.AspNet.WebApi.Client.5.2.7\lib\net45\System.Net.Http.Formatting.dll</HintPath> </Reference> <Reference Include="System.Runtime.CompilerServices.Unsafe, Version=4.0.4.1, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL"> <HintPath>..\packages\System.Runtime.CompilerServices.Unsafe.4.5.2\lib\netstandard2.0\System.Runtime.CompilerServices.Unsafe.dll</HintPath> </Reference> <Reference Include="System.Threading.Tasks.Extensions, Version=4.2.0.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51, processorArchitecture=MSIL"> <HintPath>..\packages\System.Threading.Tasks.Extensions.4.5.1\lib\netstandard2.0\System.Threading.Tasks.Extensions.dll</HintPath> </Reference> <Reference Include="System.Web.Http, Version=5.2.7.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL"> <HintPath>..\packages\Microsoft.AspNet.WebApi.Core.5.2.7\lib\net45\System.Web.Http.dll</HintPath> </Reference> <Reference Include="System.Xml.Linq" /> <Reference Include="System.Data.DataSetExtensions" /> <Reference Include="Microsoft.CSharp" /> <Reference Include="System.Data" /> <Reference Include="System.Net.Http" /> <Reference Include="System.Xml" /> </ItemGroup> Screenshot of Modules window during debug, showing loaded assembly 
