public void IHierarchy_child_of_root_has_root_as_parent_on_traversal(IHierarchy <string, string> hierarchy)
{
// ARRANGE
hierarchy.Add(HierarchyPath.Create("a"), "v1");
var root = hierarchy.Traverse(HierarchyPath.Create <string>());
// ACT
var result = hierarchy.Traverse(HierarchyPath.Create <string>()).Children().Single().Parent();
// ASSERT
Assert.Equal(root, result);
}
public void IHierarchy_throw_if_start_path_doesnt_exist(IHierarchy <string, string> hierarchy)
{
// ARRANGE
hierarchy.Add(HierarchyPath.Create("a"), "v1");
var node_a = hierarchy.Traverse(HierarchyPath.Create <string>()).Children().First();
// ACT
var result = Assert.Throws <KeyNotFoundException>(() => hierarchy.Traverse(HierarchyPath.Create("b")));
// ASSERT
Assert.True(result.Message.Contains("'b'"));
}
public void IHierarchy_start_at_child_of_root_on_traversal(IHierarchy <string, string> hierarchy)
{
// ARRANGE
hierarchy.Add(HierarchyPath.Create("a"), "v1");
var node_a = hierarchy.Traverse(HierarchyPath.Create <string>()).Children().Single();
// ACT
var result = hierarchy.Traverse(HierarchyPath.Create("a"));
// ASSERT
Assert.NotNull(result);
Assert.Equal(HierarchyPath.Create("a"), result.Path);
}
public void IHierarchy_root_node_has_no_parent_on_traversal(IHierarchy <string, string> hierarchy)
{
// ACT
var traverser = hierarchy.Traverse(HierarchyPath.Create <string>());
// ACT & ASSERT
Assert.False(traverser.HasParentNode);
}
public void IHierarchy_root_node_has_no_children_on_traversal(IHierarchy <string, string> hierarchy)
{
// ACT
var result = hierarchy.Traverse(HierarchyPath.Create <string>()).HasChildNodes;
// ASSERT
Assert.False(result);
}
public void IHierarchy_root_node_has_empty_path_on_traversal(IHierarchy <string, string> hierarchy)
{
// ACT
var result = hierarchy.Traverse(HierarchyPath.Create <string>());
// ASSERT
Assert.Equal(HierarchyPath.Create <string>(), result.Path);
}
public void IHierarchy_root_node_has_no_value_on_traversal(IHierarchy <string, string> hierarchy)
{
// ACT
var traverser = hierarchy.Traverse(HierarchyPath.Create <string>());
// ACT & ASSERT
Assert.False(traverser.TryGetValue(out var value));
}
public void IHierarchy_root_has_no_parent(IHierarchy <string, string> hierarchy)
{
// ACT
var result = hierarchy.Traverse(HierarchyPath.Create <string>()).HasParentNode;
// ASSERT
Assert.False(result);
}
public void IHierarchy_child_node_knows_its_path_on_traversal(IHierarchy <string, string> hierarchy)
{
// ARRANGE
hierarchy.Add(HierarchyPath.Create("a"), "v1");
// ACT
var result = hierarchy.Traverse(HierarchyPath.Create <string>()).ChildNodes.Single().Path;
// ASSERT
Assert.Equal(HierarchyPath.Create("a"), result);
}
public void IHierarchy_get_root_nodes_value_on_traversal(IHierarchy <string, string> hierarchy)
{
// ARRANGE
hierarchy.Add(HierarchyPath.Create <string>(), "v1");
// ACT
var result = hierarchy.Traverse(HierarchyPath.Create <string>()).TryGetValue(out var result_value);
// ASSERT
Assert.Equal("v1", result_value);
}
public void IHierarchy_RemoveNode_removes_inner_node_from_hierarchy_and_descendants(string nodeToDelete, IHierarchy <string, string> hierarchy)
{
// ARRANGE
// node
// \
// subNode
var nodePath = HierarchyPath.Parse(nodeToDelete, "/");
hierarchy.Add(nodePath, nodePath.ToString());
// add subnode with value
var subNode = nodePath.Join("subNode");
hierarchy.Add(subNode, subNode.ToString());
// ACT
// remove node and subNode
var result = hierarchy.RemoveNode(nodePath, recurse: true);
// ASSERT
// node could be removed
Assert.True(result);
// values of node and subNode can't be read anymore
Assert.False(hierarchy.TryGetValue(nodePath, out var valueNode));
Assert.False(hierarchy.TryGetValue(subNode, out var valueSubNode));
// nodes are no longer present
if (!nodePath.IsRoot)
{
Assert.Throws <KeyNotFoundException>(() => hierarchy.Traverse(nodePath));
}
Assert.Throws <KeyNotFoundException>(() => hierarchy.Traverse(subNode));
}
public void IHierarchy_get_children_of_root_node_on_traversal(IHierarchy <string, string> hierarchy)
{
// ARRANGE
hierarchy.Add(HierarchyPath.Create("a"), "v1");
hierarchy.Add(HierarchyPath.Create("b"), "v2");
// ACT
var result = hierarchy.Traverse(HierarchyPath.Create <string>()).ChildNodes.ToArray();
// ASSERT
Assert.Equal(2, result.Length);
}
public void IHierarchy_start_at_inner_node_stil_allows_to_ascend(IHierarchy <string, string> hierarchy)
{
// ARRANGE
hierarchy.Add(HierarchyPath.Create("a"), "v1");
hierarchy.Add(HierarchyPath.Create("a", "b", "c"), "v2");
// ACT
var result = hierarchy.Traverse(HierarchyPath.Create("a", "b", "c"));
// ASSERT
Assert.NotNull(result);
Assert.Equal(new[]
{
HierarchyPath.Create("a", "b", "c"),
HierarchyPath.Create("a", "b"),
HierarchyPath.Create("a"),
HierarchyPath.Create <string>(),
},
result.AncestorsAndSelf().Select(n => n.Path).ToArray());
}
public void IHierarchy_RemoveNode_removes_leaf_from_hierarchy(string pathToDelete, bool recurse, IHierarchy <string, string> hierarchy)
{
// ARRANGE
var path = HierarchyPath.Parse(pathToDelete, "/");
hierarchy.Add(path, pathToDelete);
// ACT
// the value of recurse doen't make difference
var result = hierarchy.RemoveNode(path, recurse: recurse);
// ASSERT
// result must be true always
Assert.True(result);
// node has no value
Assert.False(hierarchy.TryGetValue(path, out var _));
// nodes are no longer present
Assert.Throws <KeyNotFoundException>(() => hierarchy.Traverse(path));
}
