public void CheckIfThenByWorksCorrectly()
{
List <string> names = new List <string>
{
"Ana", "Vlad", "Dorina", "Croc", "Hook", "Alexandru"
};
Func <string, string> keySelector = x => x;
FirstLetterComparer comparer = new FirstLetterComparer();
var finalOrderedBy = DataStructures.LinqFunctions.OrderBy <string, string>(names, keySelector, comparer);
SecondLetterComparer secondComparer = new SecondLetterComparer();
var finalThenBy = DataStructures.LinqFunctions.ThenBy <string, string>(finalOrderedBy, keySelector, secondComparer);
List <string> orderedNames = new List <string>();
orderedNames.Add("Alexandru");
orderedNames.Add("Ana");
orderedNames.Add("Croc");
orderedNames.Add("Dorina");
orderedNames.Add("Hook");
orderedNames.Add("Vlad");
bool k = true;
int i = 0;
foreach (var obj in finalThenBy)
{
if (!orderedNames[i].Equals(obj))
{
k = false;
break;
}
i++;
}
Assert.True(k);
}
public void CheckIfOrderByArgumentWorksCorrectly()
{
List <string> names = null;
Func <string, string> keySelector = x => x;
FirstLetterComparer comparer = new FirstLetterComparer();
List <string> orderedNames = new List <string>();
orderedNames.Add("Ana");
orderedNames.Add("Andrei");
orderedNames.Add("Croc");
orderedNames.Add("Dorina");
orderedNames.Add("Hook");
orderedNames.Add("Vlad");
Assert.Throws <ArgumentNullException>(() => names.Equals(DataStructures.LinqFunctions.OrderBy <string, string>(names, keySelector, comparer)));
}
public void CheckIfOrderByWorksCorrectly()
{
List <string> names = new List <string>
{
"Ana", "Vlad", "Dorina", "Croc", "Hook", "Andrei"
};
Func <string, string> keySelector = x => x;
List <string> orderedNames = new List <string>();
orderedNames.Add("Ana");
orderedNames.Add("Andrei");
orderedNames.Add("Croc");
orderedNames.Add("Dorina");
orderedNames.Add("Hook");
orderedNames.Add("Vlad");
FirstLetterComparer comparer = new FirstLetterComparer();
var final = DataStructures.LinqFunctions.OrderBy <string, string>(names, keySelector, comparer);
DataStructures.OrderedEnumerable <string> finalOrdered = new DataStructures.OrderedEnumerable <string>(final, comparer);
Assert.Equal(orderedNames, finalOrdered.UnorderedList());
}
