public void Statistics_Calculated_In_Constructor()
{
var chats = Data.GetChatsB();
var calculator = new SummaryStatisticsCalculator();
var lines = calculator.GetStatisticsFromEnumerable(chats.Select(chat => (double)chat.Lines));
var minutes = calculator.GetStatisticsFromEnumerable(chats.Select(chat => (double)chat.Minutes));
var collection = new ChatCollection(chats);
Assert.AreEqual(lines, collection.LineStatistics);
Assert.AreEqual(minutes, collection.MinuteStatistics);
}
public void Statistics_Updated_On_Add()
{
var collection = new ChatCollection(Data.GetChatsB());
collection.Add(Data.GetChatA());
var chats = Data.GetChatsB().ToList();
chats.Add(Data.GetChatA());
var calculator = new SummaryStatisticsCalculator();
var lines = calculator.GetStatisticsFromEnumerable(chats.Select(chat => (double)chat.Lines));
var minutes = calculator.GetStatisticsFromEnumerable(chats.Select(chat => (double)chat.Minutes));
Assert.AreEqual(lines, collection.LineStatistics);
Assert.AreEqual(minutes, collection.MinuteStatistics);
}
public void Overloads_Match()
{
var data = new[]
{
new { x = 1, y = 2 },
new { x = 5, y = 17 },
new { x = 12, y = -9 }
};
var calculator = new SummaryStatisticsCalculator();
var selectorSummary = calculator.GetStatisticsFromEnumerable(data, obj => obj.x + obj.y);
var array = data.Select(obj => (double)obj.x + obj.y);
var nonSelectorSummary = calculator.GetStatisticsFromEnumerable(array);
Assert.AreEqual(selectorSummary, nonSelectorSummary);
}
