Merge branch 'main' into tree-node-children-prop

tests/tree/test_tree_node_children.py

@@ -2,13 +2,8 @@ import pytest
 from textual.widgets import Tree, TreeNode
 
 def label_of(node: TreeNode[None]):
-    """Get the label of a node.
-
-    TODO: This is just a helper function to reduce the number of type
-    errors, which can and will be remove once this code is merged with a
-    version of main that also has the TreeNode.label PR merged.
-    """
-    return str(node._label)
+    """Get the label of a node as a string"""
+    return str(node.label)
 
 
 def test_tree_node_children() -> None:

tests/tree/test_tree_node_label.py

@@ -0,0 +1,17 @@
+from textual.widgets import Tree, TreeNode
+from rich.text import Text
+
+def test_tree_node_label() -> None:
+    """It should be possible to modify a TreeNode's label."""
+    node = TreeNode(Tree[None]("Xenomorph Lifecycle"), None, 0, "Facehugger")
+    assert node.label == Text("Facehugger")
+    node.label = "Chestbuster"
+    assert node.label == Text("Chestbuster")
+
+def test_tree_node_label_via_tree() -> None:
+    """It should be possible to modify a TreeNode's label when created via a Tree."""
+    tree = Tree[None]("Xenomorph Lifecycle")
+    node = tree.root.add("Facehugger")
+    assert node.label == Text("Facehugger")
+    node.label = "Chestbuster"
+    assert node.label == Text("Chestbuster")