Merge pull request #6121 from TomJGooding/build-update-supported-python-versions

build!: update supported Python versions

.github/workflows/pythonpackage.yml

@@ -20,7 +20,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, windows-latest, macos-latest]
-        python-version: ["3.8", "3.9", "3.10", "3.11", "3.12", "3.13"]
+        python-version: ["3.9", "3.10", "3.11", "3.12", "3.13", "3.14"]
     defaults:
       run:
         shell: bash
@@ -35,18 +35,18 @@ jobs:
           cache: "poetry"
       - name: Install dependencies
         run: poetry install --no-interaction --extras syntax
-        if: ${{ matrix.python-version != '3.8' && matrix.python-version != '3.9' }}
-      - name: Install dependencies for 3.8 and 3.9
+        if: ${{ matrix.python-version != '3.9' }}
+      - name: Install dependencies for 3.9
         run: poetry install --no-interaction
-        if: ${{ matrix.python-version == '3.8' || matrix.python-version == '3.9' }}
+        if: ${{ matrix.python-version == '3.9' }}
       - name: Test with pytest (Py310+ - with syntax highlighting)
         run: |
           poetry run pytest tests -v --cov=./src/textual --cov-report=xml:./coverage.xml --cov-report term-missing
-        if: ${{ matrix.python-version != '3.8' && matrix.python-version != '3.9' }}
+        if: ${{ matrix.python-version != '3.9' }}
       - name: Test with pytest (Py39 - without syntax highlighting)
         run: |
           poetry run pytest tests -v --cov=./src/textual --cov-report=xml:./coverage.xml --cov-report term-missing -m 'not syntax'
-        if: ${{ matrix.python-version == '3.8' || matrix.python-version == '3.9' }}
+        if: ${{ matrix.python-version == '3.9' }}
       - name: Upload snapshot report
         if: always()
         uses: actions/upload-artifact@v4

CHANGELOG.md

@@ -5,7 +5,7 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/)
 and this project adheres to [Semantic Versioning](http://semver.org/).
 
-## Unreleased
+## [6.3.0] - 2025-10-11
 
 ### Added
 
@@ -15,6 +15,11 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 
 - Fixed highlight not auto-detecting lexer https://github.com/Textualize/textual/pull/6167
 
+### Changed
+
+- Dropped support for Python3.8 https://github.com/Textualize/textual/pull/6121/
+- Added support for Python3.14 https://github.com/Textualize/textual/pull/6121/
+
 ## [6.2.1] - 2025-10-01
 
 - Fix inability to copy text outside of an input/textarea when it was focused https://github.com/Textualize/textual/pull/6148
@@ -3144,6 +3149,7 @@ https://textual.textualize.io/blog/2022/11/08/version-040/#version-040
 - New handler system for messages that doesn't require inheritance
 - Improved traceback handling
 
+[6.3.0]: https://github.com/Textualize/textual/compare/v6.2.1...v6.3.0
 [6.2.1]: https://github.com/Textualize/textual/compare/v6.2.0...v6.2.1
 [6.2.0]: https://github.com/Textualize/textual/compare/v6.1.0...v6.2.0
 [6.1.0]: https://github.com/Textualize/textual/compare/v6.0.0...v6.1.0

README.md

@@ -1,7 +1,7 @@
 
 
 [![Discord](https://img.shields.io/discord/1026214085173461072)](https://discord.gg/Enf6Z3qhVr)
-[![Supported Python Versions](https://img.shields.io/pypi/pyversions/textual/1.0.0)](https://pypi.org/project/textual/)
+[![Supported Python Versions](https://img.shields.io/pypi/pyversions/textual)](https://pypi.org/project/textual/)
 [![PyPI version](https://badge.fury.io/py/textual.svg?)](https://badge.fury.io/py/textual)
 ![OS support](https://img.shields.io/badge/OS-macOS%20Linux%20Windows-red)
 

docs/getting_started.md

@@ -3,7 +3,7 @@ All you need to get started building Textual apps.
 
 ## Requirements
 
-Textual requires Python 3.8 or later (if you have a choice, pick the most recent Python). Textual runs on Linux, macOS, Windows and probably any OS where Python also runs.
+Textual requires Python 3.9 or later (if you have a choice, pick the most recent Python). Textual runs on Linux, macOS, Windows and probably any OS where Python also runs.
 
 !!! info "Your platform"
 

pyproject.toml

@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "textual"
-version = "6.2.1"
+version = "6.3.0"
 homepage = "https://github.com/Textualize/textual"
 repository = "https://github.com/Textualize/textual"
 documentation = "https://textual.textualize.io/"
@@ -17,12 +17,12 @@ classifiers = [
     "Operating System :: Microsoft :: Windows :: Windows 11",
     "Operating System :: MacOS",
     "Operating System :: POSIX :: Linux",
-    "Programming Language :: Python :: 3.8",
     "Programming Language :: Python :: 3.9",
     "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",
     "Programming Language :: Python :: 3.12",
     "Programming Language :: Python :: 3.13",
+    "Programming Language :: Python :: 3.14",
     "Typing :: Typed",
 ]
 include = [
@@ -41,12 +41,12 @@ include = [
 "Bug Tracker" = "https://github.com/Textualize/textual/issues"
 
 [tool.ruff]
-target-version = "py38"
+target-version = "py39"
 
 [tool.poetry.dependencies]
-python = "^3.8.1"
+python = "^3.9"
 markdown-it-py = { extras = ["plugins", "linkify"], version = ">=2.1.0" }
-rich = ">=13.3.3"
+rich = ">=14.2.0"
 #rich = {path="../rich", develop=true}
 typing-extensions = "^4.4.0"
 platformdirs = ">=3.6.0,<5"

tests/test_arrange.py

@@ -7,7 +7,7 @@ from textual.layout import WidgetPlacement
 from textual.widget import Widget
 
 
-def test_arrange_empty():
+async def test_arrange_empty():
     container = Widget(id="container")
 
     result = arrange(container, [], Size(80, 24), Size(80, 24))
@@ -15,7 +15,7 @@ def test_arrange_empty():
     assert result.widgets == set()
 
 
-def test_arrange_dock_top():
+async def test_arrange_dock_top():
     container = Widget(id="container")
     container._parent = App()
     child = Widget(id="child")
@@ -36,7 +36,7 @@ def test_arrange_dock_top():
     assert result.widgets == {child, header}
 
 
-def test_arrange_dock_left():
+async def test_arrange_dock_left():
     container = Widget(id="container")
     container._parent = App()
     child = Widget(id="child")
@@ -61,7 +61,7 @@ def test_arrange_dock_left():
     assert result.widgets == {child, header}
 
 
-def test_arrange_dock_right():
+async def test_arrange_dock_right():
     container = Widget(id="container")
     container._parent = App()
     child = Widget(id="child")
@@ -86,7 +86,7 @@ def test_arrange_dock_right():
     assert result.widgets == {child, header}
 
 
-def test_arrange_dock_bottom():
+async def test_arrange_dock_bottom():
     container = Widget(id="container")
     container._parent = App()
     child = Widget(id="child")
@@ -111,7 +111,7 @@ def test_arrange_dock_bottom():
     assert result.widgets == {child, header}
 
 
-def test_arrange_dock_badly():
+async def test_arrange_dock_badly():
     child = Widget(id="child")
     child.styles.dock = "nowhere"
     with pytest.raises(AssertionError):

tests/test_border.py

@@ -31,7 +31,7 @@ def test_border_render_row():
     ]
 
 
-def test_border_title_single_line():
+async def test_border_title_single_line():
     """The border_title gets set to a single line even when multiple lines are provided."""
     widget = Widget()
 
@@ -59,7 +59,7 @@ def test_border_title_single_line():
     assert widget.border_title == "[bold]Hello World[/bold]"
 
 
-def test_border_subtitle_single_line():
+async def test_border_subtitle_single_line():
     """The border_subtitle gets set to a single line even when multiple lines are provided."""
     widget = Widget()
 

tests/test_box_model.py

@@ -7,7 +7,7 @@ from textual.geometry import Size, Spacing
 from textual.widget import Widget
 
 
-def test_content_box():
+async def test_content_box():
     one = Fraction(1)
 
     class TestWidget(Widget):
@@ -44,7 +44,7 @@ def test_content_box():
     assert box_model == BoxModel(Fraction(14), Fraction(12), Spacing(0, 0, 0, 0))
 
 
-def test_width():
+async def test_width():
     """Test width settings."""
 
     one = Fraction(1)
@@ -93,7 +93,7 @@ def test_width():
     assert box_model == BoxModel(Fraction(27), Fraction(16), Spacing(1, 2, 3, 4))
 
 
-def test_height():
+async def test_height():
     """Test height settings."""
 
     one = Fraction(1)
@@ -143,7 +143,7 @@ def test_height():
     assert box_model == BoxModel(Fraction(54), Fraction(8), Spacing(1, 2, 3, 4))
 
 
-def test_max():
+async def test_max():
     """Check that max_width and max_height are respected."""
     one = Fraction(1)
 
@@ -166,7 +166,7 @@ def test_max():
     assert box_model == BoxModel(Fraction(40), Fraction(30), Spacing(0, 0, 0, 0))
 
 
-def test_min():
+async def test_min():
     """Check that min_width and min_height are respected."""
 
     one = Fraction(1)

tests/test_content.py

@@ -286,7 +286,7 @@ def test_first_line():
     assert first_line.spans == [Span(0, 3, "red")]
 
 
-def test_split_and_tabs():
+async def test_split_and_tabs():
     spans = [
         Span(0, 49, style="$text"),
     ]

tests/test_features.py

@@ -3,7 +3,7 @@ from __future__ import annotations
 from textual.app import App
 
 
-def test_textual_env_var(monkeypatch):
+async def test_textual_env_var(monkeypatch):
     monkeypatch.setenv("TEXTUAL", "")
     app = App()
     assert app.features == set()

tests/test_log.py

@@ -2,7 +2,7 @@ from textual.app import App, ComposeResult
 from textual.widgets import Log
 
 
-def test_process_line():
+async def test_process_line():
     log = Log()
     assert log._process_line("foo") == "foo"
     assert log._process_line("foo\t") == "foo     "

tests/test_node_list.py

@@ -9,14 +9,14 @@ def test_empty_list():
     assert len(NodeList()) == 0
 
 
-def test_add_one():
+async def test_add_one():
     """Does adding a node to the node list report as having one item?"""
     nodes = NodeList()
     nodes._append(Widget())
     assert len(nodes) == 1
 
 
-def test_length_hint():
+async def test_length_hint():
     """Check length hint dunder method."""
     nodes = NodeList()
     assert nodes.__length_hint__() == 0
@@ -26,7 +26,7 @@ def test_length_hint():
     assert nodes.__length_hint__() == 3
 
 
-def test_repeat_add_one():
+async def test_repeat_add_one():
     """Does adding the same item to the node list ignore the additional adds?"""
     nodes = NodeList()
     widget = Widget()
@@ -35,7 +35,7 @@ def test_repeat_add_one():
     assert len(nodes) == 1
 
 
-def test_insert():
+async def test_insert():
     nodes = NodeList()
     widget1 = Widget()
     widget2 = Widget()
@@ -46,7 +46,7 @@ def test_insert():
     assert list(nodes) == [widget1, widget2, widget3]
 
 
-def test_truthy():
+async def test_truthy():
     """Does a node list act as a truthy object?"""
     nodes = NodeList()
     assert not bool(nodes)
@@ -54,7 +54,7 @@ def test_truthy():
     assert bool(nodes)
 
 
-def test_contains():
+async def test_contains():
     """Can we check if a widget is (not) within the list?"""
     widget = Widget()
     nodes = NodeList()
@@ -64,7 +64,7 @@ def test_contains():
     assert Widget() not in nodes
 
 
-def test_index():
+async def test_index():
     """Can we get the index of a widget in the list?"""
     widget = Widget()
     nodes = NodeList()
@@ -74,7 +74,7 @@ def test_index():
     assert nodes.index(widget) == 0
 
 
-def test_remove():
+async def test_remove():
     """Can we remove a widget we've added?"""
     widget = Widget()
     nodes = NodeList()
@@ -84,7 +84,7 @@ def test_remove():
     assert widget not in nodes
 
 
-def test_clear():
+async def test_clear():
     """Can we clear the list?"""
     nodes = NodeList()
     assert len(nodes) == 0
@@ -100,7 +100,7 @@ def test_clear():
         assert widget not in nodes
 
 
-def test_listy():
+async def test_listy():
     nodes = NodeList()
     widget1 = Widget()
     widget2 = Widget()

tests/test_placeholder.py

@@ -4,12 +4,12 @@ from textual.widgets import Placeholder
 from textual.widgets._placeholder import InvalidPlaceholderVariant
 
 
-def test_invalid_placeholder_variant():
+async def test_invalid_placeholder_variant():
     with pytest.raises(InvalidPlaceholderVariant):
         Placeholder(variant="this is clearly not a valid variant!")
 
 
-def test_invalid_reactive_variant_change():
+async def test_invalid_reactive_variant_change():
     p = Placeholder()
     with pytest.raises(InvalidPlaceholderVariant):
         p.variant = "this is clearly not a valid variant!"

tests/test_progress_bar.py

@@ -11,7 +11,7 @@ from textual.widget import Widget
 from textual.widgets import ProgressBar
 
 
-def test_initial_status():
+async def test_initial_status():
     pb = ProgressBar()
     assert pb.total is None
     assert pb.progress == 0
@@ -23,7 +23,7 @@ def test_initial_status():
     assert pb.percentage == 0
 
 
-def test_advance():
+async def test_advance():
     pb = ProgressBar(total=100)
 
     pb.advance(10)
@@ -39,7 +39,7 @@ def test_advance():
     assert pb.percentage == approx(0.520625)
 
 
-def test_advance_backwards():
+async def test_advance_backwards():
     pb = ProgressBar(total=100)
 
     pb.progress = 50
@@ -48,7 +48,7 @@ def test_advance_backwards():
     assert pb.progress == 40
 
 
-def test_progress_overflow():
+async def test_progress_overflow():
     pb = ProgressBar(total=100)
 
     pb.advance(999_999)
@@ -58,19 +58,19 @@ def test_progress_overflow():
     assert pb.percentage == 1
 
 
-def test_progress_underflow():
+async def test_progress_underflow():
     pb = ProgressBar(total=100)
 
     pb.advance(-999_999)
     assert pb.percentage == 0
 
 
-def test_non_negative_total():
+async def test_non_negative_total():
     pb = ProgressBar(total=-100)
     assert pb.total == 0
 
 
-def test_update_total():
+async def test_update_total():
     pb = ProgressBar()
 
     pb.update(total=100)
@@ -86,7 +86,7 @@ def test_update_total():
     assert pb.total == 100
 
 
-def test_update_progress():
+async def test_update_progress():
     pb = ProgressBar(total=100)
 
     pb.update(progress=10)
@@ -99,7 +99,7 @@ def test_update_progress():
     assert pb.progress == 40
 
 
-def test_update_advance():
+async def test_update_advance():
     pb = ProgressBar(total=100)
 
     pb.update(advance=10)
@@ -112,7 +112,7 @@ def test_update_advance():
     assert pb.progress == 30
 
 
-def test_update():
+async def test_update():
     pb = ProgressBar()
 
     pb.update(total=100, progress=30, advance=20)
@@ -120,7 +120,7 @@ def test_update():
     assert pb.progress == 50
 
 
-def test_go_back_to_indeterminate():
+async def test_go_back_to_indeterminate():
     pb = ProgressBar()
 
     pb.total = 100

tests/test_query.py

@@ -30,7 +30,7 @@ async def test_query_errors():
             app.query_one("1")
 
 
-def test_query():
+async def test_query():
     class View(Widget):
         pass
 
@@ -159,7 +159,7 @@ def test_query():
             _ = app.query(".float").last(View)
 
 
-def test_query_classes():
+async def test_query_classes():
     class App(Widget):
         pass
 
@@ -225,7 +225,7 @@ def test_query_classes():
     assert len(app.query(".test")) == 0
 
 
-def test_invalid_query():
+async def test_invalid_query():
     class App(Widget):
         pass
 

tests/test_resolve.py

@@ -61,7 +61,7 @@ def test_resolve(scalars, total, gutter, result):
     )
 
 
-def test_resolve_fraction_unit():
+async def test_resolve_fraction_unit():
     """Test resolving fraction units in combination with minimum widths."""
     widget1 = Widget()
     widget2 = Widget()
@@ -124,7 +124,7 @@ def test_resolve_fraction_unit():
     ) == Fraction(2)
 
 
-def test_resolve_fraction_unit_stress_test():
+async def test_resolve_fraction_unit_stress_test():
     """Check for zero division errors."""
     # https://github.com/Textualize/textual/issues/2673
     widget = Widget()
@@ -149,7 +149,7 @@ def test_resolve_fraction_unit_stress_test():
                 assert resolved_unit <= remaining_space
 
 
-def test_resolve_issue_2502():
+async def test_resolve_issue_2502():
     """Test https://github.com/Textualize/textual/issues/2502"""
 
     widget = Widget()

tests/test_rule.py

@@ -4,23 +4,23 @@ from textual.widgets import Rule
 from textual.widgets.rule import InvalidLineStyle, InvalidRuleOrientation
 
 
-def test_invalid_rule_orientation():
+async def test_invalid_rule_orientation():
     with pytest.raises(InvalidRuleOrientation):
         Rule(orientation="invalid orientation!")
 
 
-def test_invalid_rule_line_style():
+async def test_invalid_rule_line_style():
     with pytest.raises(InvalidLineStyle):
         Rule(line_style="invalid line style!")
 
 
-def test_invalid_reactive_rule_orientation_change():
+async def test_invalid_reactive_rule_orientation_change():
     rule = Rule()
     with pytest.raises(InvalidRuleOrientation):
         rule.orientation = "invalid orientation!"
 
 
-def test_invalid_reactive_rule_line_style_change():
+async def test_invalid_reactive_rule_line_style_change():
     rule = Rule()
     with pytest.raises(InvalidLineStyle):
         rule.line_style = "invalid line style!"

tests/test_signal.py

@@ -58,7 +58,7 @@ async def test_signal():
         assert called == 3
 
 
-def test_signal_errors():
+async def test_signal_errors():
     """Check exceptions raised by Signal class."""
     app = App()
     test_signal = Signal(app, "test")

tests/test_static.py

@@ -2,7 +2,7 @@ from textual.content import Content
 from textual.widgets import Static
 
 
-def test_content_property():
+async def test_content_property():
     static = Static()
     assert static.content == ""
     static.content = "Foo"

tests/test_textlog.py

@@ -3,7 +3,7 @@ from rich.text import Text
 from textual.widgets import RichLog
 
 
-def test_make_renderable_expand_tabs():
+async def test_make_renderable_expand_tabs():
     # Regression test for https://github.com/Textualize/textual/issues/3007
     text_log = RichLog()
     renderable = text_log._make_renderable("\tfoo")

tests/test_widget.py

@@ -63,7 +63,7 @@ async def test_widget_construct():
         ["visible", True, "visible"],
     ],
 )
-def test_widget_set_visible_true(set_val, get_val, style_str):
+async def test_widget_set_visible_true(set_val, get_val, style_str):
     widget = Widget()
     widget.visible = set_val
 
@@ -71,7 +71,7 @@ def test_widget_set_visible_true(set_val, get_val, style_str):
     assert widget.styles.visibility == style_str
 
 
-def test_widget_set_visible_invalid_string():
+async def test_widget_set_visible_invalid_string():
     widget = Widget()
 
     with pytest.raises(StyleValueError):
@@ -80,7 +80,7 @@ def test_widget_set_visible_invalid_string():
     assert widget.visible
 
 
-def test_widget_content_width():
+async def test_widget_content_width():
     class TextWidget(Widget):
         def __init__(self, text: str, id: str) -> None:
             self.text = text
@@ -238,19 +238,19 @@ async def test_widget_mount_ids_must_be_unique_mounting_multiple_calls(hierarchy
             parent.mount(widget2)
 
 
-def test_get_pseudo_class_state():
+async def test_get_pseudo_class_state():
     widget = Widget()
     pseudo_classes = widget.get_pseudo_class_state()
     assert pseudo_classes == PseudoClasses(enabled=True, focus=False, hover=False)
 
 
-def test_get_pseudo_class_state_disabled():
+async def test_get_pseudo_class_state_disabled():
     widget = Widget(disabled=True)
     pseudo_classes = widget.get_pseudo_class_state()
     assert pseudo_classes == PseudoClasses(enabled=False, focus=False, hover=False)
 
 
-def test_get_pseudo_class_state_parent_disabled():
+async def test_get_pseudo_class_state_parent_disabled():
     child = Widget()
     _parent = Widget(disabled=True)
     child._attach(_parent)
@@ -258,14 +258,14 @@ def test_get_pseudo_class_state_parent_disabled():
     assert pseudo_classes == PseudoClasses(enabled=False, focus=False, hover=False)
 
 
-def test_get_pseudo_class_state_hover():
+async def test_get_pseudo_class_state_hover():
     widget = Widget()
     widget.mouse_hover = True
     pseudo_classes = widget.get_pseudo_class_state()
     assert pseudo_classes == PseudoClasses(enabled=True, focus=False, hover=True)
 
 
-def test_get_pseudo_class_state_focus():
+async def test_get_pseudo_class_state_focus():
     widget = Widget()
     widget.has_focus = True
     pseudo_classes = widget.get_pseudo_class_state()
@@ -314,7 +314,7 @@ async def test_remove_unmounted():
         assert mounted
 
 
-def test_render_str() -> None:
+async def test_render_str() -> None:
     widget = Label()
     assert widget.render_str("foo") == Content("foo")
     assert widget.render_str("[b]foo") == Content.from_markup("[b]foo")
@@ -371,11 +371,11 @@ def test_children_must_be_widgets():
         Widget(1, 2, 3)
 
 
-def test_orphan_widget_has_no_siblings():
+async def test_orphan_widget_has_no_siblings():
     assert Widget().siblings == []
 
 
-def test__allow_scroll_default():
+async def test__allow_scroll_default():
     assert not Widget()._allow_scroll
 
 
@@ -407,7 +407,7 @@ async def test_offset_getter_setter():
         assert label.offset == Offset(7, 3)
 
 
-def test_get_set_tooltip():
+async def test_get_set_tooltip():
     widget = Widget()
     assert widget.tooltip is None
     widget.tooltip = "This is a tooltip."

tests/test_widget_mount_point.py

@@ -11,7 +11,7 @@ class Body(Widget):
     pass
 
 
-def test_find_dom_spot():
+async def test_find_dom_spot():
     # Build up a "fake" DOM for an application.
     screen = Widget(name="Screen")
     header = Widget(name="Header", id="header")

tests/tree/test_tree_get_node_by_id.py

@@ -6,7 +6,7 @@ from textual.widgets import Tree
 from textual.widgets.tree import NodeID, UnknownNodeID
 
 
-def test_get_tree_node_by_id() -> None:
+async def test_get_tree_node_by_id() -> None:
     """It should be possible to get a TreeNode by its ID."""
     tree = Tree[None]("Anakin")
     child = tree.root.add("Leia")

tests/tree/test_tree_node_add.py

@@ -4,13 +4,13 @@ from textual.widgets import Tree
 from textual.widgets.tree import AddNodeError
 
 
-def test_tree_node_add_before_and_after_raises_exception():
+async def test_tree_node_add_before_and_after_raises_exception():
     tree = Tree[None]("root")
     with pytest.raises(AddNodeError):
         tree.root.add("error", before=99, after=0)
 
 
-def test_tree_node_add_before_or_after_with_invalid_type_raises_exception():
+async def test_tree_node_add_before_or_after_with_invalid_type_raises_exception():
     tree = Tree[None]("root")
     tree.root.add("node")
     with pytest.raises(TypeError):
@@ -19,7 +19,7 @@ def test_tree_node_add_before_or_after_with_invalid_type_raises_exception():
         tree.root.add("after node", after="node")
 
 
-def test_tree_node_add_before_index():
+async def test_tree_node_add_before_index():
     tree = Tree[None]("root")
     tree.root.add("node")
     tree.root.add("before node", before=0)
@@ -38,7 +38,7 @@ def test_tree_node_add_before_index():
     assert str(tree.root.children[6].label) == "last"
 
 
-def test_tree_node_add_after_index():
+async def test_tree_node_add_after_index():
     tree = Tree[None]("root")
     tree.root.add("node")
     tree.root.add("after node", after=0)
@@ -57,7 +57,7 @@ def test_tree_node_add_after_index():
     assert str(tree.root.children[6].label) == "last"
 
 
-def test_tree_node_add_relative_to_unknown_node_raises_exception():
+async def test_tree_node_add_relative_to_unknown_node_raises_exception():
     tree = Tree[None]("root")
     removed_node = tree.root.add("removed node")
     removed_node.remove()
@@ -67,7 +67,7 @@ def test_tree_node_add_relative_to_unknown_node_raises_exception():
         tree.root.add("node", after=removed_node)
 
 
-def test_tree_node_add_before_node():
+async def test_tree_node_add_before_node():
     tree = Tree[None]("root")
     node = tree.root.add("node")
     before_node = tree.root.add("before node", before=node)
@@ -86,7 +86,7 @@ def test_tree_node_add_before_node():
     assert str(tree.root.children[6].label) == "last"
 
 
-def test_tree_node_add_after_node():
+async def test_tree_node_add_after_node():
     tree = Tree[None]("root")
     node = tree.root.add("node")
     after_node = tree.root.add("after node", after=node)
@@ -105,7 +105,7 @@ def test_tree_node_add_after_node():
     assert str(tree.root.children[6].label) == "last"
 
 
-def test_tree_node_add_leaf_before_or_after():
+async def test_tree_node_add_leaf_before_or_after():
     tree = Tree[None]("root")
     leaf = tree.root.add_leaf("leaf")
     tree.root.add_leaf("before leaf", before=leaf)

tests/tree/test_tree_node_children.py

@@ -9,7 +9,7 @@ def label_of(node: TreeNode[None]):
     return str(node.label)
 
 
-def test_tree_node_children() -> None:
+async def test_tree_node_children() -> None:
     """A node's children property should act like an immutable list."""
     CHILDREN = 23
     tree = Tree[None]("Root")

tests/tree/test_tree_node_label.py

@@ -4,7 +4,7 @@ from textual.widgets import Tree
 from textual.widgets.tree import TreeNode
 
 
-def test_tree_node_label() -> None:
+async 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")
@@ -12,7 +12,7 @@ def test_tree_node_label() -> None:
     assert node.label == Text("Chestbuster")
 
 
-def test_tree_node_label_via_tree() -> None:
+async 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")

tests/tree/test_tree_node_parent.py

@@ -1,7 +1,7 @@
 from textual.widgets import Tree
 
 
-def test_tree_node_parent() -> None:
+async def test_tree_node_parent() -> None:
     """It should be possible to access a TreeNode's parent."""
     tree = Tree[None]("Anakin")
     child = tree.root.add("Leia")