Why Moq is thorwing "expected Invocation on the mock at least once". Where as it is being set once,e
- by Mohit
Following is the code. create a class lib add the ref to NUnit framework 2.5.3.9345 and Moq.dll 4.0.0.0 and paste the following code. Try running it on my machine it throws
TestCase
'MoqTest.TryClassTest.IsMessageNotNull'
failed: Moq.MockException : Expected
invocation on the mock at least once,
but was never performed: v = v.Model
= It.Is(value(Moq.It+<c__DisplayClass21[MoqTest.GenInfo]).match)
at
Moq.Mock.ThrowVerifyException(IProxyCall
expected, Expression expression, Times
times, Int32 callCount) at
Moq.Mock.VerifyCalls(Interceptor
targetInterceptor, MethodCall
expected, Expression expression, Times
times) at
Moq.Mock.VerifySet[T](Mock1 mock,
Action1 setterExpression, Times
times, String failMessage) at
Moq.Mock1.VerifySet(Action`1
setterExpression) Class1.cs(22,0): at
MoqTest.TryClassTest.IsMessageNotNull()
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Moq;
using NUnit.Framework;
namespace MoqTest
{
[TestFixture]
public class TryClassTest
{
[Test]
public void IsMessageNotNull()
{
var mockView = new Mock<IView<GenInfo>>();
mockView.Setup(v => v.ModuleId).Returns("");
TryPresenter tryPresenter = new TryPresenter(mockView.Object);
tryPresenter.SetMessage(new object(), new EventArgs());
// mockView.VerifySet(v => v.Message, Times.AtLeastOnce());
mockView.VerifySet(v => v.Model = It.Is<GenInfo>(x => x != null));
}
}
public class TryPresenter
{
private IView<GenInfo> view;
public TryPresenter(IView<GenInfo> view)
{
this.view = view;
}
public void SetMessage(object sender, EventArgs e)
{
this.view.Model = null;
}
}
public class MyView : IView<GenInfo>
{
#region Implementation of IView<GenInfo>
public string ModuleId
{
get; set;
}
public GenInfo Model
{
get; set;
}
#endregion
}
public interface IView<T>
{
string ModuleId { get; set; }
T Model { get; set; }
}
public class GenInfo
{
public String Message { get; set; }
}
}
And if you change one line
mockView.VerifySet(v = v.Model = It.Is(x = x != null));
to
mockView.VerifySet(v = v.Model, Times.AtLeastOnce());
it works fine.
I think Exception is incorrect.
