Multiple asserts using AndArgumentsMatch predicates.

Hi,

The easier way to match any int is:

 Isolate.WhenCalled(() => fake.MyFunc(0)).WillReturn(100);

The value that you pass to MyFunc is ignored.

This solves your first issue as well.

You can also write cusom logic for MyFunc.

I prefer the way you initially did it, just thought you should know all possible implementations:

[TestMethod, Isolated]
[ExpectedException(typeof(ArgumentException))]
public void MatchArgumentsUsingPredicate2()
{
    var fake = Isolate.Fake.Instance<IMyInterface>();
 
    Isolate.WhenCalled(() => fake.MyFunc(0)).DoInstead(c =>
    {
        if ((int)c.Parameters[0] > 100)
        {
            throw new ArgumentException();
        }
        return 100;
    });
 
    int result = fake.MyFunc(1);
    Assert.AreEqual(100, result);
    // Thow ArgumentException
    fake.MyFunc(101);
}