public void ImageResultDoesntChangeArrayLength()
{
var initialArray = new ImageBox[] { new ImageBox.Loaded(Texture2D.whiteTexture) };
var newArray = ModifyImageSlotReducer.ReduceClearSlot(initialArray, new ClearImageSlotAction(0));
Assert.AreEqual(initialArray.Length, newArray.Length, "Reducer changed array length");
}
public void ImageResultForNonLoadingSlotThrows()
{
var initialArray = new ImageBox[] { new ImageBox.Empty() };
Assert.Throws <InvalidOperationException>(
() => ModifyImageSlotReducer.ReduceClearSlot(initialArray, new ClearImageSlotAction(0)),
"Reducer did not throw Argument exception when targeting non Loading slot"
);
}
public void InvalidIndexThrows()
{
var initialArray = new ImageBox[] { new ImageBox.Empty() };
Assert.Throws <IndexOutOfRangeException>(
() => ModifyImageSlotReducer.ReduceClearSlot(initialArray, new ClearImageSlotAction(1)),
"Reducer did not throw IndexOutOfRangeException when index was out of range"
);
}
public void EmptyArrayThrows()
{
var initialArray = new ImageBox[0];
Assert.Throws <ArgumentException>(
() => ModifyImageSlotReducer.ReduceClearSlot(initialArray, new ClearImageSlotAction(0)),
"Reducer did not throw ArgumentException when initial array was empty"
);
}
public void ImageResultChangesSpecifiedIndexToEmptyState()
{
var initialArray = new ImageBox[]
{
new ImageBox.Loaded(Texture2D.whiteTexture), new ImageBox.Loaded(Texture2D.whiteTexture), new ImageBox.Loaded(Texture2D.whiteTexture), new ImageBox.Loaded(Texture2D.whiteTexture),
new ImageBox.Loaded(Texture2D.whiteTexture)
};
var newArray = ModifyImageSlotReducer.ReduceClearSlot(initialArray, new ClearImageSlotAction(2));
Assert.IsInstanceOf <ImageBox.Empty>(newArray[2], "Modified slot was not of type Empty");
}
public void ImageResultDoesntChangeOtherIndices()
{
var initialArray = new ImageBox[]
{
new ImageBox.Loaded(Texture2D.whiteTexture), new ImageBox.Loaded(Texture2D.whiteTexture), new ImageBox.Loaded(Texture2D.whiteTexture), new ImageBox.Loaded(Texture2D.whiteTexture),
new ImageBox.Loaded(Texture2D.whiteTexture)
};
var newArray = ModifyImageSlotReducer.ReduceClearSlot(initialArray, new ClearImageSlotAction(2));
void CheckIndex(int expectedIndex, int actualIndex) =>
Assert.AreEqual(initialArray[expectedIndex], newArray[actualIndex], $"Expected initial slot {expectedIndex} to match new slot {expectedIndex}");
CheckIndex(0, 0);
CheckIndex(1, 1);
CheckIndex(3, 3);
CheckIndex(4, 4);
}
