public void Container_RemoveContent_ExistingElement_Works(Fb2Container node)
{
node.Should().NotBeNull();
var firstAllowedNode = Fb2NodeFactory.GetNodeByName(node.AllowedElements.First());
var lastAllowedNode = Fb2NodeFactory.GetNodeByName(node.AllowedElements.Last());
var nodesEquals = firstAllowedNode.Equals(lastAllowedNode);
node.AddContent(firstAllowedNode, lastAllowedNode);
node.Content.Should().NotBeEmpty().And.Subject.Should().HaveCount(2);
firstAllowedNode.Parent.Should().NotBeNull();
firstAllowedNode.Parent.Should().Be(node);
lastAllowedNode.Parent.Should().NotBeNull();
lastAllowedNode.Parent.Should().Be(node);
node.RemoveContent(firstAllowedNode); // Fb2Node
firstAllowedNode.Parent.Should().BeNull();
node.Content.Should().NotBeEmpty().And.Subject.Should().HaveCount(1);
node.Content.Should().Contain(lastAllowedNode);
// empty nodes (without sub tree) of same type are, basically, equal lol
// so if you add 2 empty "bold" elements to "paragraph"
// and then use RemoveContent(firstAllowedNode), and check Contains - it will return true
if (!nodesEquals) // when container can have only one type child
{
node.Content.Contains(firstAllowedNode).Should().BeFalse();
}
ClearContainerContent(node);
lastAllowedNode.Parent.Should().BeNull();
node.AddContent(firstAllowedNode, lastAllowedNode);
node.Content.Should().NotBeEmpty().And.Subject.Should().HaveCount(2);
firstAllowedNode.Parent.Should().NotBeNull();
firstAllowedNode.Parent.Should().Be(node);
lastAllowedNode.Parent.Should().NotBeNull();
lastAllowedNode.Parent.Should().Be(node);
node.RemoveContent(new List <Fb2Node> {
firstAllowedNode, lastAllowedNode
}); // IEnumerable<Fb2Node>
node.Content.Should().BeEmpty();
node.AddContent(firstAllowedNode, lastAllowedNode);
node.Content.Should().NotBeEmpty().And.Subject.Should().HaveCount(2);
node.RemoveContent(n => n.Name.Equals(firstAllowedNode.Name)); // Func<Fb2Node, bool> predicate
if (nodesEquals)
{
node.Content.Should().BeEmpty();
}
else
{
node.Content.Should().NotBeEmpty().And.Subject.Should().HaveCount(1);
node.Content.Should().Contain(lastAllowedNode);
node.Content.Should().NotContain(firstAllowedNode);
}
ClearContainerContent(node);
}
