public void OutputsPostsInDescendingTimestampOrder()
{
var alice = new User("Alice");
var bob = new User("Bob");
var charlie = new User("Charlie");
alice.Follow(bob);
alice.Follow(charlie);
var posts = new[]
{
new Post(bob, "Hello, world!", DateTime.MinValue),
new Post(charlie, "Bonjour la monde!", DateTime.MinValue.AddYears(1)),
new Post(bob, "Sekai, konnichiwa!", DateTime.MinValue.AddYears(2))
};
bob.Publish(posts[0]);
bob.Publish(posts[2]);
charlie.Publish(posts[1]);
var outputSpy = new OutputSpy();
var postFormatter = new PostFormatterDummy(p => p.Message);
var command = new PrintWall(postFormatter, outputSpy);
command.Execute(alice);
Assert.Equal(
new[] { "Sekai, konnichiwa!", "Bonjour la monde!", "Hello, world!" },
outputSpy.CalledWith);
}
public void OutputsFormattedStrings()
{
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 PostFormatterDummy("Hello!");
var command = new PrintWall(postFormatter, outputSpy);
command.Execute(alice);
Assert.Equal(new[] { "Hello!" }, outputSpy.CalledWith);
}