public void CallsThePrintFormatter()
{
var user = new User("Alice");
var post = new Post(user, "Hello!", DateTime.Now);
user.Publish(post);
var spy = new PostFormatterSpy();
var oSpy = new OutputSpy();
var command = new PrintPosts(spy, oSpy);
command.Execute(user);
Assert.Equal(new[] { post }, spy.CalledWith);
}
public void FormatsPosts()
{
var alice = new User("Alice");
var bob = new User("Bob");
var post = new Post(bob, "Hello, World!", DateTime.Now);
alice.Follow(bob);
bob.Publish(post);
var outputSpy = new OutputSpy();
var postFormatter = new PostFormatterSpy();
var command = new PrintWall(postFormatter, outputSpy);
command.Execute(alice);
Assert.Equal(new[] { post }, postFormatter.CalledWith);
}