FakeItEasy Should_match_lambda_arguments

gistfile1.cs

[Test]
public void Should_match_lambda_arguments()
{
    // Arrange
    var fake = A.Fake<ITypeWithMethodWithDelegateParameter>();
    var action = (Action)(() => { });
    var other = (Action)(() => { });

    // Act
    fake.Foo(action);

    // Assert
    A.CallTo(() => fake.Foo(action)).MustHaveHappened();
    A.CallTo(() => fake.Foo(other)).MustNotHaveHappened();
}

public interface ITypeWithMethodWithDelegateParameter
{
    void Foo(Action action);
}