unit-testing - 运行单元测试时出现奇怪的 .net 4.0 异常

Question

当我尝试在 VS2010 下使用 .net 4.0 和最小起订量 3.1 运行单元测试时，收到以下异常。

Attempt by security transparent method 'SPPD.Backend.DataAccess.Test.Specs_for_Core.When_using_base.Can_create_mapper()' to access security critical method 'Microsoft.VisualStudio.TestTools.UnitTesting.Assert.IsNotNull(System.Object)' failed.

Assembly 'SPPD.Backend.DataAccess.Test, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null' is marked with the AllowPartiallyTrustedCallersAttribute, and uses the level 2 security transparency model. Level 2 transparency causes all methods in AllowPartiallyTrustedCallers assemblies to become security transparent by default, which may be the cause of this exception.

我正在运行的测试非常简单，如下所示:

    [TestMethod]
    public void Can_create_mapper()
    {
        this.SetupTest();

        var mockMapper = new Moq.Mock<IMapper>().Object;
        this._Resolver.Setup(x => x.Resolve<IMapper>()).Returns(mockMapper).Verifiable();

        var testBaseDa = new TestBaseDa();
        var result = testBaseDa.TestCreateMapper<IMapper>();

        Assert.IsNotNull(result);  //<<< THROWS EXCEPTION HERE 
        Assert.AreSame(mockMapper, result);

        this._Resolver.Verify();
    }

我不知道这意味着什么，我一直在环顾四周，但在这个主题上发现的很少。我找到的最接近的引用文献是这个http://dotnetzip.codeplex.com/Thread/View.aspx?ThreadId=80274但不太清楚他们做了什么来修复它......

大家有什么想法吗？

Answer 1

在引用项目的 AssemblyInfo.cs 中添加以下行

[assembly: System.Security.SecurityRules(System.Security.SecurityRuleSet.Level1)]