public void InsertionSortNawArray_InsertionSortGeinverteerd_SortedArray_ShouldNotSetAnyNewIndexes()
{
// Arrange
NAW[] testSet;
var expectedLength = 10;
var array = ArrayExtensions.InitializeTestSubject(new NawArrayUnordered(expectedLength), expectedLength, out testSet, orderAscending: true);
var newNaw = RandomNawGenerator.New();
// Act
Alg1_Practicum_Utils.Globals.Alg1NawArrayMethodCalled = false;
array.InsertionSortInverted();
// Assert
Assert.IsFalse(Alg1_Practicum_Utils.Globals.Alg1NawArrayMethodCalled, "\n\nEr wordt een methode van Alg1NawArray gebruikt!\n\n");
Assert.IsTrue(array.CheckIsGesorteerd());
Assert.IsTrue(Logger.Instance.LogItems.Where(li => li.ArrayAction == ArrayAction.GET).Count() >= expectedLength);
Assert.AreEqual(0, Logger.Instance.LogItems.Where(li => li.ArrayAction == ArrayAction.SET &&
li.NewNaw1 != li.OldNaw1).Count());
}
public void NawArrayUnordered_SelectionSort_NineOnFront_WholeArrayShifted()
{
// Arrange
NAW[] testSet;
var expectedLength = 10;
var array = ArrayExtensions.InitializeTestSubject(new NawArrayUnordered(expectedLength), expectedLength, out testSet);
var newNaw = RandomNawGenerator.New();
testSet[0].Woonplaats = "9";
testSet[1].Woonplaats = "0";
testSet[2].Woonplaats = "1";
testSet[3].Woonplaats = "2";
testSet[4].Woonplaats = "3";
testSet[5].Woonplaats = "4";
testSet[6].Woonplaats = "5";
testSet[7].Woonplaats = "6";
testSet[8].Woonplaats = "7";
testSet[9].Woonplaats = "8";
// Act
array.SelectionSort();
// Assert
var realSwaps = Logger.Instance.RealSwaps.ToList();
var logItems = Logger.Instance.LogItems.ToList();
Assert.IsTrue(array.CheckIsGesorteerd(), "De array is niet gesorteerd na de SelectionSort");
Assert.AreEqual(expectedLength - 1, realSwaps.Count, "Het laatste item staat vooraan, de rest staat juist. We verwachten dat je het totale aantal -1 nodig hebt om de rest voor de laatste te zetten.");
for (int i = 0; i < expectedLength - 1; i++)
{
Assert.AreEqual(i, realSwaps[i].Index1);
Assert.AreEqual(i + 1, realSwaps[i].Index2);
var indexOfSwap = logItems.IndexOf(realSwaps[i]);
// We assert to not touch previous touched items.
Assert.IsFalse(logItems.Skip(indexOfSwap + 1).Any(li => li.Index1 <= realSwaps[i].Index1), "Wanneer je een deel van je lijst gesorteerd hebt, moet je de rest laten staan.");
}
}
public void SelectionSortNawArray_SelectionSort_NineOnFront_WholeArrayShifted()
{
// Arrange
NAW[] testSet;
var expectedLength = 10;
var array = ArrayExtensions.InitializeTestSubject(new NawArrayUnordered(expectedLength), expectedLength, out testSet);
var newNaw = RandomNawGenerator.New();
testSet[0].Woonplaats = "9";
testSet[1].Woonplaats = "0";
testSet[2].Woonplaats = "1";
testSet[3].Woonplaats = "2";
testSet[4].Woonplaats = "3";
testSet[5].Woonplaats = "4";
testSet[6].Woonplaats = "5";
testSet[7].Woonplaats = "6";
testSet[8].Woonplaats = "7";
testSet[9].Woonplaats = "8";
// Act
array.SelectionSort();
// Assert
var realSwaps = Logger.Instance.RealSwaps.ToList();
var logItems = Logger.Instance.LogItems.ToList();
Assert.IsTrue(array.CheckIsGesorteerd());
Assert.AreEqual(expectedLength - 1, realSwaps.Count);
for (int i = 0; i < expectedLength - 1; i++)
{
Assert.AreEqual(i, realSwaps[i].Index1);
Assert.AreEqual(i + 1, realSwaps[i].Index2);
var indexOfSwap = logItems.IndexOf(realSwaps[i]);
// We assert to not touch previous touched items.
Assert.IsFalse(logItems.Skip(indexOfSwap + 1).Any(li => li.Index1 <= realSwaps[i].Index1));
}
}
public void NawArrayUnordered_SelectionSort_ShouldStartWithFirst()
{
// Arrange
NAW[] testSet;
var expectedLength = 10;
var array = ArrayExtensions.InitializeTestSubject(new NawArrayUnordered(expectedLength), expectedLength, out testSet);
var newNaw = RandomNawGenerator.New();
testSet[0].Woonplaats = "9";
testSet[1].Woonplaats = "0";
testSet[2].Woonplaats = "1";
testSet[3].Woonplaats = "2";
testSet[4].Woonplaats = "3";
testSet[5].Woonplaats = "4";
testSet[6].Woonplaats = "5";
testSet[7].Woonplaats = "6";
testSet[8].Woonplaats = "7";
testSet[9].Woonplaats = "8";
// Act
array.SelectionSort();
// Assert
Assert.IsTrue(array.CheckIsGesorteerd(), "De array is niet gesorteerd na de SelectionSort");
var logItems = Logger.Instance.LogItems.ToList();
var realSwaps = Logger.Instance.RealSwaps.ToList();
Assert.AreEqual(expectedLength - 1, realSwaps.Count, "We verwachten dat je alle items voor de 9 moet gaan zetten, daarom heb je 8 swaps nodig.");
for (int i = 0; i < realSwaps.Count; i++)
{
var indexOf = logItems.IndexOf(realSwaps[i]);
var range = logItems.Take(indexOf);
Assert.AreEqual(i, range.Min(li => li.Index1), "Je hebt niet de kleinste uit de overgebleven set gepakt.");
Assert.AreEqual(expectedLength - 1, range.Max(li => li.Index1), "Je hebt niet de kleinste uti de overgebleven set gepakt.");
logItems = logItems.Skip(indexOf + 1).ToList();
}
}
public void SelectionSortNawArray_SelectionSortGeinverteerd_ShouldStartWithLast()
{
// Arrange
NAW[] testSet;
var expectedLength = 10;
var array = ArrayExtensions.InitializeTestSubject(new NawArrayUnordered(expectedLength), expectedLength, out testSet);
var newNaw = RandomNawGenerator.New();
testSet[0].Woonplaats = "9";
testSet[1].Woonplaats = "0";
testSet[2].Woonplaats = "1";
testSet[3].Woonplaats = "2";
testSet[4].Woonplaats = "3";
testSet[5].Woonplaats = "4";
testSet[6].Woonplaats = "5";
testSet[7].Woonplaats = "6";
testSet[8].Woonplaats = "7";
testSet[9].Woonplaats = "8";
// Act
array.SelectionSortInverted();
// Assert
Assert.IsTrue(array.CheckIsGesorteerd());
var logItems = Logger.Instance.LogItems.ToList();
var realSwaps = Logger.Instance.RealSwaps.ToList();
Assert.AreEqual(expectedLength - 1, realSwaps.Count);
for (int i = 0; i < realSwaps.Count; i++)
{
var indexOf = logItems.IndexOf(realSwaps[i]);
var range = logItems.Take(indexOf);
Assert.AreEqual(0, range.Min(li => li.Index1));
Assert.AreEqual(expectedLength - 1 - i, range.Max(li => li.Index1));
logItems = logItems.Skip(indexOf).ToList();
}
}
public void NawArrayUnordered_Add_Valid_ShouldAddAtTheEnd()
{
// Arrange
NAW[] testSet;
var expectedLength = 5;
var array = InitializeTestsubject(10, expectedLength, out testSet);
var newNaw = RandomNawGenerator.New();
// Act
array.Add(newNaw);
// Assert
Assert.AreEqual(expectedLength + 1, array.Count);
// Niets is overschreven
for (var i = 0; i < testSet.Length; i++)
{
Assert.AreEqual(testSet[i], array.Array[i], "\n\nNawArrayUnordered.Add(): Bij het toevoegen aan de array is item {0} onterecht overschreven.", i);
}
// Aan het einde toegevoegd
Assert.AreEqual(newNaw, array.Array[expectedLength], "\n\nNawArrayUnordered.Add(): Bij het toevoegen aan de array is de nieuwe item niet aan het einde ingevoegd.");
}
public void NawArrayUnordered_BubbleSort_SortedArrayDescending_ShouldSetAllItemsButOne()
{
// Arrange
NAW[] testSet;
var expectedLength = 100;
var array = ArrayExtensions.InitializeTestSubject(new NawArrayUnordered(expectedLength), expectedLength, out testSet, orderDescending: true);
var newNaw = RandomNawGenerator.New();
// Act
Alg1_Practicum_Utils.Globals.Alg1NawArrayMethodCalled = false;
array.BubbleSort();
// Assert
Assert.IsFalse(Alg1_Practicum_Utils.Globals.Alg1NawArrayMethodCalled, "\n\nEr wordt een methode van Alg1NawArray gebruikt!\n\n");
Assert.IsTrue(array.CheckIsGesorteerd(), "De array is na de bubbleSort niet geordend. De items staan niet op de juiste volgorde.");
var swaps = Logger.Instance.RealSwaps;
Assert.AreEqual(expectedLength.SumAllSmallerIncSelf() - expectedLength, swaps.Count(),
"Het aantal swaps zou gelijk moeten zijn aan een O(Log(n)), dit is niet het geval.");
}
public void NawArrayUnordered_Add_OneTooMany_ShouldThrowException()
{
// Arrange
NAW[] testSet;
var array = InitializeTestsubject(3, 3, out testSet);
var oneTooMany = RandomNawGenerator.New();
// Act
Alg1_Practicum_Utils.Globals.Alg1NawArrayMethodCalled = false;
try
{
array.Add(oneTooMany);
}
catch (Exception ex)
{
// Assert
Assert.IsInstanceOfType(ex, typeof(NawArrayUnorderedOutOfBoundsException),
"\n\nNawArrayUnordered.Add(): Toevoegen van 11e element aan array met omvang van 10 geeft geen exceptie. Controleer je wel of het array nog ruimte heeft ?");
}
Assert.IsFalse(Alg1_Practicum_Utils.Globals.Alg1NawArrayMethodCalled, "\n\nEr wordt een methode van Alg1NawArray gebruikt!\n\n");
}
public void NawArrayUnordered_BubbleSort_AllTheSameWoonplaats_IsInOrder()
{
// Arrange
NAW[] testSet;
var expectedLength = 10;
var array = ArrayExtensions.InitializeTestSubject(new NawArrayUnordered(expectedLength), expectedLength, out testSet);
var newNaw = RandomNawGenerator.New();
foreach (var item in testSet)
{
item.Woonplaats = "Allemaal dezelfde woonplaats";
}
// Act
Alg1_Practicum_Utils.Globals.Alg1NawArrayMethodCalled = false;
array.BubbleSort();
// Assert
Assert.IsFalse(Alg1_Practicum_Utils.Globals.Alg1NawArrayMethodCalled, "\n\nEr wordt een methode van Alg1NawArray gebruikt!\n\n");
Assert.IsTrue(array.CheckIsGesorteerd(), "De array is na de bubbleSort niet geordend. De items staan niet op de juiste volgorde.");
}
public void InsertionSortableNawArrayUnordered_InsertionSort_AllTheSameWoonplaats_IsInOrder()
{
// Arrange
NAW[] testSet;
var expectedLength = 10;
var array = ArrayExtensions.InitializeTestSubject(New(expectedLength), expectedLength, out testSet);
var newNaw = RandomNawGenerator.New();
foreach (var item in testSet)
{
item.Woonplaats = "Allemaal dezelfde woonplaats";
}
// Act
Alg1.Practica.Utils.Globals.Alg1NawArrayMethodCalled = false;
array.InsertionSort();
// Assert
Assert.IsFalse(Alg1.Practica.Utils.Globals.Alg1NawArrayMethodCalled, "\n\nEr wordt een methode van Alg1NawArray gebruikt!\n\n");
Assert.IsTrue(array.CheckIsGesorteerd(), "De array is niet gesorteerd na de InsertionSort.");
}
public void InsertionSortNawArray_InsertionSortGeinverteerd_AllTheSameWoonplaatsAndNaam_IsInOrder()
{
// Arrange
NAW[] testSet;
var expectedLength = 10;
var array = ArrayExtensions.InitializeTestSubject(new NawArrayUnordered(expectedLength), expectedLength, out testSet);
var newNaw = RandomNawGenerator.New();
foreach (var item in testSet)
{
item.Woonplaats = "Allemaal dezelfde woonplaats";
item.Naam = "Allemaal dezelfde naam";
}
// Act
Alg1_Practicum_Utils.Globals.Alg1NawArrayMethodCalled = false;
array.InsertionSortInverted();
// Assert
Assert.IsFalse(Alg1_Practicum_Utils.Globals.Alg1NawArrayMethodCalled, "\n\nEr wordt een methode van Alg1NawArray gebruikt!\n\n");
Assert.IsTrue(array.CheckIsGesorteerd());
}
public void BinarySearchNawArray_BinarySearchPerformance()
{
// Arrange
NAW[] testSet;
var expectedLength = 100;
var runs = 1000000;
var array = ArrayExtensions.InitializeTestSubject(new NawArrayOrdered(expectedLength), expectedLength, out testSet, orderAscending: true);
var random = new Random();
// generate NAW that is not in the testset
NAW nonExistingNaw;
do
{
nonExistingNaw = RandomNawGenerator.New();
} while (testSet.Contains(nonExistingNaw));
Assert.IsTrue(array.FindBinary(nonExistingNaw) == -1);
Stopwatch stopwatch_BR100 = new Stopwatch();
Stopwatch stopwatch_BW100 = new Stopwatch();
// Act
stopwatch_BR100.Start();
for (int i = 0; i < runs; i++)
{
var expectedIndex = random.Next(0, expectedLength);
var actualIndex = array.FindBinary(testSet[expectedIndex]);
}
stopwatch_BR100.Stop();
stopwatch_BW100.Start();
for (int i = 0; i < runs; i++)
{
var actualIndex = array.FindBinary(nonExistingNaw);
}
stopwatch_BW100.Stop();
// Re-Arrange
var expectedLength2 = 1000;
var array2 = ArrayExtensions.InitializeTestSubject(new NawArrayOrdered(expectedLength2), expectedLength2, out testSet, orderAscending: true);
// generate NAW that is not in the testset
do
{
nonExistingNaw = RandomNawGenerator.New();
} while (testSet.Contains(nonExistingNaw));
Assert.IsTrue(array.FindBinary(nonExistingNaw) == -1);
Stopwatch stopwatch_BR1000 = new Stopwatch();
Stopwatch stopwatch_BW1000 = new Stopwatch();
// Act
stopwatch_BR1000.Start();
for (int i = 0; i < runs; i++)
{
var expectedIndex = random.Next(0, expectedLength2);
var actualIndex = array2.FindBinary(testSet[expectedIndex]);
}
stopwatch_BR1000.Stop();
stopwatch_BW1000.Start();
for (int i = 0; i < runs; i++)
{
var actualIndex = array2.FindBinary(nonExistingNaw);
}
stopwatch_BW1000.Stop();
// Re-Arrange
var expectedLength3 = 10000;
var array3 = ArrayExtensions.InitializeTestSubject(new NawArrayOrdered(expectedLength3), expectedLength3, out testSet, orderAscending: true);
// generate NAW that is not in the testset
do
{
nonExistingNaw = RandomNawGenerator.New();
} while (testSet.Contains(nonExistingNaw));
Assert.IsTrue(array3.FindBinary(nonExistingNaw) == -1);
Stopwatch stopwatch_BR10000 = new Stopwatch();
Stopwatch stopwatch_BW10000 = new Stopwatch();
// Act
stopwatch_BR10000.Start();
for (int i = 0; i < runs; i++)
{
var expectedIndex = random.Next(0, expectedLength3);
var actualIndex = array3.FindBinary(testSet[expectedIndex]);
}
stopwatch_BR10000.Stop();
stopwatch_BW10000.Start();
for (int i = 0; i < runs; i++)
{
var actualIndex = array3.FindBinary(nonExistingNaw);
}
stopwatch_BW10000.Stop();
// Assert
// Assert.AreEqual(expectedIndex, actualIndex);
Console.WriteLine("\nPerformed {0} random Binary searches in Array with length {1}", runs, expectedLength);
PrintOutput(expectedLength, stopwatch_BR100);
Console.WriteLine("\nPerformed {0} random Binary searches in Array with length {1}", runs, expectedLength2);
PrintOutput(expectedLength2, stopwatch_BR1000);
Console.WriteLine("\nPerformed {0} random Binary searches in Array with length {1}", runs, expectedLength3);
PrintOutput(expectedLength3, stopwatch_BR10000);
Console.WriteLine("\nPerformed {0} Binary searches on non existing NAW in Array with length {1}", runs, expectedLength);
PrintOutput(expectedLength, stopwatch_BW100);
Console.WriteLine("\nPerformed {0} Binary searches on non existing NAW in Array with length {1}", runs, expectedLength2);
PrintOutput(expectedLength2, stopwatch_BW1000);
Console.WriteLine("\nPerformed {0} Binary searches on non existing NAW in Array with length {1}", runs, expectedLength3);
PrintOutput(expectedLength3, stopwatch_BW10000);
}
public void NawArrayUnordered_InsertionSort_EightAndFourSwapped_ShouldHaveRightBounds()
{
// Arrange
NAW[] testSet;
var expectedLength = 10;
var array = ArrayExtensions.InitializeTestSubject(new NawArrayUnordered(expectedLength), expectedLength, out testSet);
var newNaw = RandomNawGenerator.New();
testSet[0].Woonplaats = "0";
testSet[1].Woonplaats = "1";
testSet[2].Woonplaats = "2";
testSet[3].Woonplaats = "3";
testSet[4].Woonplaats = "8";
testSet[5].Woonplaats = "5";
testSet[6].Woonplaats = "6";
testSet[7].Woonplaats = "7";
testSet[8].Woonplaats = "4";
testSet[9].Woonplaats = "9";
// Act
Alg1_Practicum_Utils.Globals.Alg1NawArrayMethodCalled = false;
array.InsertionSort();
// Assert
Assert.IsFalse(Alg1_Practicum_Utils.Globals.Alg1NawArrayMethodCalled, "\n\nEr wordt een methode van Alg1NawArray gebruikt!\n\n");
// Logger.Instance.Print();
Assert.IsTrue(array.CheckIsGesorteerd(), "De array is niet gesorteerd na de InsertionSort.");
int lowerBound = 4, upperBound = 8;
NAW toMoveUp = testSet[lowerBound];
var toMoveUpSetters = (from li in Logger.Instance.LogItems
where li.NewNaw1 == toMoveUp && li.ArrayAction == ArrayAction.SET &&
li.NewNaw1 != li.OldNaw1 // This will be checked in another test
orderby li.Index1
select li).ToArray();
// This one bubbles up slowly.
for (int i = lowerBound + 1; i <= upperBound; i++)
{
Assert.IsTrue(toMoveUpSetters[i - lowerBound - 1].Index1 == i, "Er zouden 4 items verplaatst moeten zijn om ruimte te maken in het geordende deel.");
}
NAW toBeInsertedDown = testSet[upperBound];
var toBeInsertedDownSetters = (from li in Logger.Instance.LogItems
where li.NewNaw1 == toBeInsertedDown && li.ArrayAction == ArrayAction.SET &&
li.NewNaw1 != li.OldNaw1 // This will be checked in another test
orderby li.Index1
select li).ToArray();
// This one moves down in an insertion way.
Assert.AreEqual(1, toBeInsertedDownSetters.Count(), "Meerdere items zijn geïnsert in de sortering, dit had er 1 moeten zijn.");
Assert.AreEqual(lowerBound, toBeInsertedDownSetters.First().Index1, "Item met woonplaats 4 zou op de 4e index geïnsert moeten zijn.");
// All setters must be in between the bounds.
Assert.IsTrue(Logger.Instance.LogItems
.Where(li => li.ArrayAction == ArrayAction.SET && li.NewNaw1 != li.OldNaw1)
.All(li => li.Index1 >= lowerBound && li.Index1 <= upperBound), "Je hebt items verplaatst die niet verplaatst hadden hoeven worden omdat ze al goed stonden.");
}
public void InsertionSortNawArray_InsertionSortGeinverteerd_EightAndFourSwapped_ShouldNotSetWhenNotSwapped()
{
// Arrange
NAW[] testSet;
var expectedLength = 10;
var array = ArrayExtensions.InitializeTestSubject(new NawArrayUnordered(expectedLength), expectedLength, out testSet);
var newNaw = RandomNawGenerator.New();
testSet[0].Woonplaats = "0";
testSet[1].Woonplaats = "1";
testSet[2].Woonplaats = "2";
testSet[3].Woonplaats = "3";
testSet[4].Woonplaats = "8";
testSet[5].Woonplaats = "5";
testSet[6].Woonplaats = "6";
testSet[7].Woonplaats = "7";
testSet[8].Woonplaats = "4";
testSet[9].Woonplaats = "9";
// Act
Alg1_Practicum_Utils.Globals.Alg1NawArrayMethodCalled = false;
array.InsertionSortInverted();
Logger.Instance.Print();
// Assert
Assert.IsFalse(Alg1_Practicum_Utils.Globals.Alg1NawArrayMethodCalled, "\n\nEr wordt een methode van Alg1NawArray gebruikt!\n\n");
Assert.IsTrue(array.CheckIsGesorteerd());
int lowerBound = 4, upperBound = 8;
NAW toMoveDown = testSet[upperBound];
var toMoveDownSetters = (from li in Logger.Instance.LogItems
where li.NewNaw1 == toMoveDown && li.ArrayAction == ArrayAction.SET
orderby li.Index1 descending
select li).ToArray();
// This one bubbles Down slowly.
for (int i = upperBound - 1; i >= lowerBound; i--)
{
Assert.IsTrue(toMoveDownSetters[upperBound - i - 1].Index1 == i);
}
NAW toBeInsertedUp = testSet[lowerBound];
var toBeInsertedUpSetters = (from li in Logger.Instance.LogItems
where li.NewNaw1 == toBeInsertedUp && li.ArrayAction == ArrayAction.SET &&
li.NewNaw1 != li.OldNaw1 // This will be checked in another test
orderby li.Index1
select li).ToArray();
// This one moves Up in an insertion way.
Assert.AreEqual(1, toBeInsertedUpSetters.Count());
Assert.AreEqual(upperBound, toBeInsertedUpSetters.First().Index1);
// All setters must be in between the bounds.
Assert.IsTrue(Logger.Instance.LogItems
.Where(li => li.ArrayAction == ArrayAction.SET && li.NewNaw1 != li.OldNaw1)
.All(li => li.Index1 >= lowerBound && li.Index1 <= upperBound));
}
