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);
}