public void CanMove1StepToLeftByConstructorWithCollectionAndSmallerVisualSize()
{
var collection = new DualObserableCollection <int>(new List <int> {
1, 2, 3, 4, 5
}, 2);
Assert.IsTrue(collection.CanMove1StepToLeft);
}
public void ConstructorWithFullParameters(int visualSize)
{
var source = new List <int>()
{
1, 2, 3
};
var collection = new DualObserableCollection <int>(source, visualSize);
Assert.AreEqual(collection.VisualSize, visualSize);
}
public void MoveStepsToLeft(int steps)
{
var collection = new DualObserableCollection <int>(new List <int> {
1, 2, 3, 4, 5
}, 2);
collection.MoveStepsToLeft(steps);
var firstVisible = collection.VisualElements.First();
var lastVisibile = collection.VisualElements.Last();
Assert.AreEqual(4, firstVisible, "First visual element should be 4");
Assert.AreEqual(5, lastVisibile, "Last visual element should be 5");
}
public void CanNotMove1StepToRightJustAfterConstruction(ICollection <int> source, int visualSize)
{
var collection = new DualObserableCollection <int>(source, visualSize);
Assert.IsFalse(collection.CanMove1StepToRight);
}
public void CanNotMove1StepToLeftIfCollectionEmpty()
{
var collection = new DualObserableCollection <int>();
Assert.IsFalse(collection.CanMove1StepToLeft);
}
public void SetVisualSizeInConstructor()
{
var collection = new DualObserableCollection <int>(5);
Assert.AreEqual(collection.VisualSize, 5);
}
public void DefaultConstructorShouldSetVisualSizeTo0()
{
var collection = new DualObserableCollection <int>();
Assert.AreEqual(collection.VisualSize, 0);
}