public void When_ListIsEmptyCursor_CanNot_BeSetInHead()
{
LinkedListModel <int> list = null;
"Given empty list model"
.x(() =>
{
list = new LinkedListModel <int>();
});
"When user tries to set cursor to head of such list"
.x(() =>
{
list.CursorToHead();
});
"Then cursor must be not in head and not be set"
.x(() =>
{
var isInHead = list.IsCursorInHead();
var isSet = list.IsCursorSet();
isInHead.Should().BeFalse();
isSet.Should().BeFalse();
});
}
public void When_UserTriesToSetCursorToTailOfNotEmptyList_Must_BeSet()
{
LinkedListModel <int> list = null;
"Given not empty list model"
.x(() =>
{
list = new LinkedListModel <int>();
list.AddInTail(10);
});
"When user tries to set cursor to tail of such list"
.x(() =>
{
list.CursorToTail();
});
"Then cursor must be in tail of list"
.x(() =>
{
var isInHead = list.IsCursorInTail();
isInHead.Should().BeTrue();
});
}
public void When_ListIsEmptyAndCursorIsNotSetMoveNext_Not_ChangeCursor()
{
LinkedListModel <int> list = null;
"Given empty list model"
.x(() =>
{
list = new LinkedListModel <int>();
});
"When user tries to move cursor next"
.x(() =>
{
list.MoveCursorNext();
});
"Then no any affection should happened for cursor"
.x(() =>
{
var item = list.GetItem();
var isInHead = list.IsCursorInHead();
var isInTail = list.IsCursorInTail();
var hasItem = list.IsCursorSet();
item.Should().Be(default);
public void When_ListModelIsCreatedCursor_IsNot_Set()
{
LinkedListModel <int> list = null;
"When list model has been created"
.x(() =>
{
list = new LinkedListModel <int>();
});
"Then cursor should not be set"
.x(() =>
{
var isSet = list.IsCursorSet();
isSet.Should().BeFalse();
});
}
public void When_CursorIsNotInTailAndMoveNextFuncTakeCursorToTailCursor_Must_BeInTail()
{
LinkedListModel <int> list = null;
"Given not empty list model with items 1 2 3 4 5"
.x(() =>
{
list = new LinkedListModel <int>();
list.AddInTail(1);
list.AddInTail(2);
list.AddInTail(3);
list.AddInTail(4);
list.AddInTail(5);
});
"And cursor is set in item with value 4"
.x(() =>
{
// set cursor to tail
list.CursorToHead();
list.SetToNextSameItem(4);
});
"When user tries to move cursor next"
.x(() =>
{
list.MoveCursorNext();
});
"Then cursor must indicates to value 5 and be in tail"
.x(() =>
{
var item = list.GetItem();
var isInTail = list.IsCursorInTail();
item.Should().Be(5);
isInTail.Should().BeTrue();
});
}
public void When_CursorIsInTailMoveNext_DoNotMoveCursor()
{
LinkedListModel <int> list = null;
"Given not empty list model with items 1 2 3 4 5"
.x(() =>
{
list = new LinkedListModel <int>();
list.AddInTail(1);
list.AddInTail(2);
list.AddInTail(3);
list.AddInTail(4);
list.AddInTail(5);
});
"And cursor is set in tail"
.x(() =>
{
// set cursor to tail
list.CursorToTail();
});
"When user tries to move cursor next"
.x(() =>
{
list.MoveCursorNext();
});
"Then cursor must be still indicate to tail item because next node are not exists"
.x(() =>
{
var isInTail = list.IsCursorInTail();
var item = list.GetItem();
item.Should().Be(5);
isInTail.Should().BeTrue();
});
}
public void When_ListNotEmptyAndCursorIsNotInTailMoveNext_SetCursoreToNextNode()
{
LinkedListModel <int> list = null;
"Given not empty list model with items 1 2 3 4 5"
.x(() =>
{
list = new LinkedListModel <int>();
list.AddInTail(1);
list.AddInTail(2);
list.AddInTail(3);
list.AddInTail(4);
list.AddInTail(5);
});
"And cursor is set in value 3"
.x(() =>
{
// set cursor and move to 3 item
list.CursorToHead();
list.SetToNextSameItem(3);
});
"When user tries to move cursor next"
.x(() =>
{
list.MoveCursorNext();
});
"Then cursor must be indicate to item with value 4"
.x(() =>
{
var item = list.GetItem();
item.Should().Be(4);
});
}
