public async Task Container_AddContent_AllowedElement_Works(Fb2Container node)
{
node.Should().NotBeNull();
var allowedElementName = node.AllowedElements.First();
var firstAllowedNode = Fb2NodeFactory.GetNodeByName(allowedElementName);
node.AddContent(firstAllowedNode);
node.Content.Should().NotBeEmpty().And.Subject.Should().HaveCount(1);
ClearContainerContent(node);
// params Fb2Node[] nodes
node.AddContent(firstAllowedNode, firstAllowedNode); // lol
node.Content.Should().NotBeEmpty().And.Subject.Should().HaveCount(2);
ClearContainerContent(node);
node.AddContent(() => firstAllowedNode); // Func<Fb2Node>
node.Content.Should().NotBeEmpty().And.Subject.Should().HaveCount(1);
ClearContainerContent(node);
node.AddContent(new List <Fb2Node> {
firstAllowedNode
}); // IEnumerable<Fb2Node>
node.Content.Should().NotBeEmpty().And.Subject.Should().HaveCount(1);
ClearContainerContent(node);
// async node provider
await node.AddContentAsync(async() => await Task.FromResult(firstAllowedNode));
node.Content.Should().NotBeEmpty().And.Subject.Should().HaveCount(1);
ClearContainerContent(node);
//string name
node.AddContent(node.AllowedElements.First());
node.Content.Should().HaveCount(1);
}