public void PruneWhenLimitIsNotExceeded()
{
var ui = new UserIndex()
.UpdateTimestamp("user1", UnixMillisecondTime.OfMillis(1000))
.UpdateTimestamp("user2", UnixMillisecondTime.OfMillis(2000));
Assert.Same(ui, ui.Prune(3, out var removed1));
Assert.Empty(removed1);
Assert.Same(ui, ui.Prune(2, out var removed2));
Assert.Empty(removed2);
}
public void PruneRemovesLeastRecentUsers()
{
var ui = new UserIndex()
.UpdateTimestamp("user1", UnixMillisecondTime.OfMillis(1000))
.UpdateTimestamp("user2", UnixMillisecondTime.OfMillis(2000))
.UpdateTimestamp("user3", UnixMillisecondTime.OfMillis(1111)) // deliberately out of order
.UpdateTimestamp("user4", UnixMillisecondTime.OfMillis(3000))
.UpdateTimestamp("user5", UnixMillisecondTime.OfMillis(4000));
var ui1 = ui.Prune(3, out var removed);
Assert.Equal(ImmutableList.Create("user1", "user3"), removed);
Assert.Collection(ui1.Data,
AssertEntry("user2", 2000),
AssertEntry("user4", 3000),
AssertEntry("user5", 4000));
}
