public void GivenCollection_WhenAddingTag_ThenCountIsIncrementedAndContains()
{
// Arrange
var oldCount = _tags.GetCount <string>();
// Act
_tags.Add <string>();
var newCount = _tags.GetCount <string>();
// Assert
Assert.That(newCount, Is.EqualTo(oldCount + 1));
Assert.That(_tags.Contains <string>());
}
