var builder = new MockVbeBuilder();
var project = builder.ProjectBuilder("TestProject1", vbext_ProjectProtection.vbext_pp_none)
.AddComponent("IClass1", vbext_ComponentType.vbext_ct_ClassModule, inputCode1)
.AddComponent("Class1", vbext_ComponentType.vbext_ct_ClassModule, inputCode2)
.AddComponent("Class2", vbext_ComponentType.vbext_ct_ClassModule, inputCode3)
.Build();
var vbe = builder.AddProject(project).Build();
var component = project.Object.VBComponents.Item(1);
vbe.Setup(v => v.ActiveCodePane).Returns(component.CodeModule.CodePane);