public void ResourceModel_GetErrors_ErrorsForInstance()
{
//------------Setup for test--------------------------
var instanceID = Guid.NewGuid();
var err1 = new Mock<IErrorInfo>();
err1.Setup(e => e.InstanceID).Returns(instanceID);
var err2 = new Mock<IErrorInfo>();
err2.Setup(e => e.InstanceID).Returns(Guid.NewGuid());
var model = new ResourceModel(new Mock<IEnvironmentModel>().Object, new Mock<IEventAggregator>().Object);
model.AddError(err1.Object);
model.AddError(err2.Object);
//------------Execute Test---------------------------
var errors = model.GetErrors(instanceID);
//------------Assert Results-------------------------
Assert.AreEqual(1, errors.Count);
Assert.AreEqual(instanceID, errors[0].InstanceID);
}