In TypeMock you can create a future mock object, for example:
public class ClassToTest
{
public ClassToTest()
{
var o = new Foo();
}
}
[Test]
public void Test()
{
var fakeFoo = Isolate.Fake.Instance<Foo>();
Isolate.Swap.NextInstance<Foo>().With(fakeFoo);
}
Does MS Fakes have the same functionality as the above?
I found a great example from this SO question which demonstrates how to fake future instances of objects. Here's an example from that question:
[TestClass]
public class UnitTest1
{
[TestMethod]
public void TestMethod1()
{
ClassLibrary1.Child myChild = new ClassLibrary1.Child();
using (ShimsContext.Create())
{
ClassLibrary1.Fakes.ShimChild.AllInstances.addressGet = (instance) => "foo";
ClassLibrary1.Fakes.ShimParent.AllInstances.NameGet = (instance) => "bar";
Assert.AreEqual("foo", myChild.address);
Assert.AreEqual("bar", myChild.Name);
}
}
}
This looks like it will do the trick for me.