public void GenericMethodUsage()
{
var stub = new StubExample();
IExample example = stub;
stub.ImplementGenericMethod <int>(() => 5);
stub.ImplementGenericMethod <string>(() => "bob");
Assert.Equal(5, example.GenericMethod <int>());
Assert.Equal("bob", example.GenericMethod <string>());
// if no implementation is assigned, default values are used when needed.
Assert.Equal(default(double), example.GenericMethod <double>());
Assert.Equal(default(bool), example.GenericMethod <bool>());
// if you want to make a more complete implementation that works for any generic parameter,
// put your custom implementation in a decorator and then wrap the stub with that decorator.
// This DOES require making a custom class, but there's no other way to make a generic-parameterized method:
// you can't use a lambda or pass in a delegate.
}
