public void DoubleLayerTreeSerializationTest()
{
FileCategory rootNode = new FileCategory("a");
FileCategory leftChild = new FileCategory("b");
FileCategory rightChild = new FileCategory("c");
rootNode.AddSubCategories(new FileCategory[] { leftChild, rightChild });
leftChild.AddSubCategory(new FileCategory("d"));
rightChild.AddSubCategory(new FileCategory("e"));
string actualJson = JsonConvert.SerializeObject(rootNode);
Assert.Equal(doubleLayerTreeJson, actualJson);
}