Verify Constructor Called With Specific Arguments

[TestMethod]
public void TestCtor()
{
    using(var recorder = RecorderManager.StartRecording())
    {
        new DummyClass(1);
        recorder.CheckArguments();
    }
    DoSomething();
    MockManager.Verify();
}

[TestMethod]
public void TestGetNum()
{
    var fake = Isolate.Fake.Instance<DummyClass>();
    Isolate.Swap.NextInstance<DummyClass>().With(fake);
    var expected = 2;
    Isolate.WhenCalled(() => fake.GetNum()).WillReturn(expected);

    var actual = DoSomething();
    Assert.AreEqual(expected, actual);
}

private static int DoSomething()
{
    var dummyClass = new DummyClass(1);
    return dummyClass.GetNum();
}