public static void GeneralLayoutTests() => Describe(nameof(LayoutItemNode), () =>
{
It("When adding a child, parent is set", () =>
{
var parentNode = new LayoutItem();
var childNode = new LayoutItem();
parentNode.Add(childNode);
childNode.ShouldSatisfyAllConditions(
() => childNode.Parent.ShouldNotBeNull(),
() => childNode.Parent.ShouldBe(parentNode)
);
});
It("When adding a child, it is in collection", () =>
{
var parentNode = new LayoutItem();
var childNode = new LayoutItem();
parentNode.Add(childNode);
parentNode.ShouldContain(childNode);
});
It("When setting the parent, it is in collection", () =>
{
var parentNode = new LayoutItem();
var childNode = new LayoutItem();
childNode.Parent = parentNode;
parentNode.ShouldContain(childNode);
});
It("When unsetting the parent, it is removed from collection", () =>
{
var parentNode = new LayoutItem();
var childNode = new LayoutItem();
childNode.Parent = parentNode;
childNode.Parent = null;
parentNode.ShouldNotContain(childNode);
});
It("When removing a child, it is removed from collection", () =>
{
var parentNode = new LayoutItem();
var childNode = new LayoutItem();
parentNode.Add(childNode);
parentNode.Remove(childNode);
parentNode.ShouldNotContain(childNode);
});
It("When removing a child, it's parent is unset", () =>
{
var parentNode = new LayoutItem();
var childNode = new LayoutItem();
parentNode.Add(childNode);
parentNode.Remove(childNode);
childNode.Parent.ShouldBeNull();
});
It("When setting a new parent, tree structure is correct", () =>
{
var rootNode = new LayoutItem();
var childNode1 = new LayoutItem();
var childNode2 = new LayoutItem();
rootNode.Add(childNode1);
rootNode.Add(childNode2);
childNode2.Parent = childNode1;
rootNode.ShouldSatisfyAllConditions(
() => rootNode.Parent.ShouldBeNull(),
() => childNode1.Parent.ShouldBe(rootNode),
() => childNode2.Parent.ShouldBe(childNode1),
() => rootNode.ShouldContain(childNode1),
() => childNode1.ShouldContain(childNode2),
() => childNode2.ShouldBeEmpty()
);
});
It("settings parent twice has no effect", () =>
{
var rootNode = new LayoutItem();
var childNode = new LayoutItem();
rootNode.Add(childNode);
childNode.ShouldSatisfyAllConditions(
() => childNode.Parent.ShouldBe(rootNode)
);
});
It("clear unsets the parents", () =>
{
var rootNode = new LayoutItem();
var childNode1 = new LayoutItem();
var childNode2 = new LayoutItem();
var childNode3 = new LayoutItem();
var childNode4 = new LayoutItem();
rootNode.Add(childNode1);
rootNode.Add(childNode2);
rootNode.Add(childNode3);
rootNode.Add(childNode4);
rootNode.Clear();
rootNode.ShouldSatisfyAllConditions(
() => rootNode.ShouldBeEmpty(),
() => childNode1.Parent.ShouldBeNull(),
() => childNode2.Parent.ShouldBeNull(),
() => childNode3.Parent.ShouldBeNull(),
() => childNode4.Parent.ShouldBeNull()
);
});
It("when using with expression sets parent", () =>
{
var rootNode = new LayoutItem();
var childNode1 = new LayoutItem();
var childNode2 = new LayoutItem();
rootNode = rootNode with
{
Children = new()
{
childNode1,
childNode2,
new LayoutItem()
}
};
