public void Add_EmptyDictionary_Duplicates_ShouldThrowException()
{
// Arrange
var dictionary = new DictionaryDataStructure.Dictionary<string, string>();
// Act
dictionary.Add("Peter", "first");
dictionary.Add("Peter", "second");
}
public void Add_1000_Elements_Grow_ShouldWorkCorrectly()
{
// Arrange
var dictionary = new DictionaryDataStructure.Dictionary<string, int>(1);
// Act
var expectedElements = new List<KeyValue<string, int>>();
for (int i = 0; i < 1000; i++)
{
dictionary.Add("key" + i, i);
expectedElements.Add(new KeyValue<string, int>("key" + i, i));
}
// Assert
var actualElements = dictionary.ToList();
CollectionAssert.AreEquivalent(expectedElements, actualElements);
}
public void Add_EmptyDictionary_NoDuplicates_ShouldAddElement()
{
// Arrange
var dictionary = new DictionaryDataStructure.Dictionary<string, int>();
// Act
var elements = new KeyValue<string, int>[]
{
new KeyValue<string, int>("Peter", 5),
new KeyValue<string, int>("Maria", 6),
new KeyValue<string, int>("George", 4),
new KeyValue<string, int>("Kiril", 5)
};
foreach (var element in elements)
{
dictionary.Add(element.Key, element.Value);
}
// Assert
var actualElements = dictionary.ToList();
CollectionAssert.AreEquivalent(elements, actualElements);
}
public void Capacity_Grow_ShouldWorkCorrectly()
{
// Arrange
var dictionary = new DictionaryDataStructure.Dictionary<string, int>(2);
// Assert
Assert.AreEqual(2, dictionary.Capacity);
// Act
dictionary.Add("Peter", 123);
dictionary.Add("Maria", 456);
// Assert
Assert.AreEqual(4, dictionary.Capacity);
// Act
dictionary.Add("Tanya", 555);
dictionary.Add("George", 777);
// Assert
Assert.AreEqual(8, dictionary.Capacity);
}
public void Values_ShouldWorkCorrectly()
{
// Arrange
var dictionary = new DictionaryDataStructure.Dictionary<string, double>();
// Assert
CollectionAssert.AreEquivalent(new string[0], dictionary.Values.ToArray());
// Arrange
dictionary.Add("Peter", 12.5);
dictionary.Add("Maria", 99.9);
dictionary["Peter"] = 123.45;
// Act
var values = dictionary.Values;
// Assert
var expectedValues = new double[] { 99.9, 123.45 };
CollectionAssert.AreEquivalent(expectedValues, values.ToArray());
}
public void TryGetValue_ExistingElement_ShouldReturnTheValue()
{
// Arrange
var dictionary = new DictionaryDataStructure.Dictionary<int, string>();
// Act
dictionary.Add(555, "Peter");
string value;
var result = dictionary.TryGetValue(555, out value);
// Assert
Assert.AreEqual("Peter", value);
Assert.IsTrue(result);
}
public void Remove_NonExistingElement_ShouldWorkCorrectly()
{
// Arrange
var dictionary = new DictionaryDataStructure.Dictionary<string, double>();
dictionary.Add("Peter", 12.5);
dictionary.Add("Maria", 99.9);
// Assert
Assert.AreEqual(2, dictionary.Count);
// Act
var removed = dictionary.Remove("George");
// Assert
Assert.IsFalse(removed);
Assert.AreEqual(2, dictionary.Count);
}
public void Remove_5000_Elements_ShouldWorkCorrectly()
{
// Arrange
var dictionary = new DictionaryDataStructure.Dictionary<string, int>();
var keys = new List<string>();
var count = 5000;
for (int i = 0; i < count; i++)
{
var key = Guid.NewGuid().ToString();
keys.Add(key);
dictionary.Add(key, i);
}
// Assert
Assert.AreEqual(count, dictionary.Count);
// Act & Assert
keys.Reverse();
foreach (var key in keys)
{
dictionary.Remove(key);
count--;
Assert.AreEqual(count, dictionary.Count);
}
// Assert
var expectedElements = new List<KeyValue<string, int>>();
var actualElements = dictionary.ToList();
CollectionAssert.AreEquivalent(expectedElements, actualElements);
}
public void Indexer_ExistingElement_ShouldReturnTheValue()
{
// Arrange
var dictionary = new DictionaryDataStructure.Dictionary<int, string>();
// Act
dictionary.Add(555, "Peter");
var actualValue = dictionary[555];
// Assert
Assert.AreEqual("Peter", actualValue);
}
public void Find_ExistingElement_ShouldReturnTheElement()
{
// Arrange
var dictionary = new DictionaryDataStructure.Dictionary<string, DateTime>();
var name = "Maria";
var date = new DateTime(1995, 7, 18);
dictionary.Add(name, date);
// Act
var element = dictionary.Find(name);
// Assert
var expectedElement = new KeyValue<string, DateTime>(name, date);
Assert.AreEqual(expectedElement, element);
}
public void Count_Empty_Add_Remove_ShouldWorkCorrectly()
{
// Arrange
var dictionary = new DictionaryDataStructure.Dictionary<string, int>();
// Assert
Assert.AreEqual(0, dictionary.Count);
// Act & Assert
dictionary.Add("Peter", 555);
dictionary.AddOrReplace("Peter", 555);
dictionary.AddOrReplace("Ivan", 555);
Assert.AreEqual(2, dictionary.Count);
// Act & Assert
dictionary.Remove("Peter");
Assert.AreEqual(1, dictionary.Count);
// Act & Assert
dictionary.Remove("Peter");
Assert.AreEqual(1, dictionary.Count);
// Act & Assert
dictionary.Remove("Ivan");
Assert.AreEqual(0, dictionary.Count);
}
public void ContainsKey_ExistingElement_ShouldReturnTrue()
{
// Arrange
var dictionary = new DictionaryDataStructure.Dictionary<DateTime, string>();
var date = new DateTime(1995, 7, 18);
dictionary.Add(date, "Some value");
// Act
var containsKey = dictionary.ContainsKey(date);
// Assert
Assert.IsTrue(containsKey);
}
public void Clear_ShouldWorkCorrectly()
{
// Arrange
var dictionary = new DictionaryDataStructure.Dictionary<string, int>();
// Assert
Assert.AreEqual(0, dictionary.Count);
// Act
dictionary.Clear();
// Assert
Assert.AreEqual(0, dictionary.Count);
// Arrange
dictionary.Add("Peter", 5);
dictionary.Add("George", 7);
dictionary.Add("Maria", 3);
// Assert
Assert.AreEqual(3, dictionary.Count);
// Act
dictionary.Clear();
// Assert
Assert.AreEqual(0, dictionary.Count);
var expectedElements = new List<KeyValue<string, int>>();
var actualElements = dictionary.ToList();
CollectionAssert.AreEquivalent(expectedElements, actualElements);
dictionary.Add("Peter", 5);
dictionary.Add("George", 7);
dictionary.Add("Maria", 3);
// Assert
Assert.AreEqual(3, dictionary.Count);
}