Update tests to handle scroll changes to Container

See #2361.

docs/examples/styles/scrollbar_size.py

@@ -1,5 +1,5 @@
 from textual.app import App
-from textual.containers import Container
+from textual.containers import ScrollableContainer
 from textual.widgets import Label
 
 TEXT = """I must not fear.
@@ -14,7 +14,7 @@ Where the fear has gone there will be nothing. Only I will remain.
 
 class ScrollbarApp(App):
     def compose(self):
-        yield Container(Label(TEXT * 5), classes="panel")
+        yield ScrollableContainer(Label(TEXT * 5), classes="panel")
 
 
 app = ScrollbarApp(css_path="scrollbar_size.css")

docs/examples/styles/scrollbar_size2.css

@@ -1,4 +1,4 @@
-Container {
+ScrollableContainer {
     width: 1fr;
 }
 

docs/examples/styles/scrollbar_size2.py

@@ -1,5 +1,5 @@
 from textual.app import App
-from textual.containers import Horizontal, Container
+from textual.containers import Horizontal, ScrollableContainer
 from textual.widgets import Label
 
 TEXT = """I must not fear.
@@ -15,10 +15,12 @@ Where the fear has gone there will be nothing. Only I will remain.
 class ScrollbarApp(App):
     def compose(self):
         yield Horizontal(
-            Container(Label(TEXT * 5), id="v1"),
-            Container(Label(TEXT * 5), id="v2"),
-            Container(Label(TEXT * 5), id="v3"),
+            ScrollableContainer(Label(TEXT * 5), id="v1"),
+            ScrollableContainer(Label(TEXT * 5), id="v2"),
+            ScrollableContainer(Label(TEXT * 5), id="v3"),
         )
 
 
 app = ScrollbarApp(css_path="scrollbar_size2.css")
+if __name__ == "__main__":
+    app.run()

docs/examples/styles/scrollbars.css

@@ -9,6 +9,6 @@ Label {
     scrollbar-corner-color: blue;
 }
 
-Horizontal > Container {
+Horizontal > ScrollableContainer {
     width: 50%;
 }

docs/examples/styles/scrollbars.py

@@ -1,5 +1,5 @@
 from textual.app import App
-from textual.containers import Horizontal, Container
+from textual.containers import Horizontal, ScrollableContainer
 from textual.widgets import Label
 
 TEXT = """I must not fear.
@@ -15,9 +15,11 @@ Where the fear has gone there will be nothing. Only I will remain.
 class ScrollbarApp(App):
     def compose(self):
         yield Horizontal(
-            Container(Label(TEXT * 10)),
-            Container(Label(TEXT * 10), classes="right"),
+            ScrollableContainer(Label(TEXT * 10)),
+            ScrollableContainer(Label(TEXT * 10), classes="right"),
         )
 
 
 app = ScrollbarApp(css_path="scrollbars.css")
+if __name__ == "__main__":
+    app.run()

docs/examples/widgets/content_switcher.py

@@ -1,5 +1,7 @@
+from rich.align import VerticalCenter
+
 from textual.app import App, ComposeResult
-from textual.containers import Horizontal
+from textual.containers import Horizontal, VerticalScroll
 from textual.widgets import Button, ContentSwitcher, DataTable, Markdown
 
 MARKDOWN_EXAMPLE = """# Three Flavours Cornetto
@@ -37,7 +39,8 @@ class ContentSwitcherApp(App[None]):
 
         with ContentSwitcher(initial="data-table"):  # (4)!
             yield DataTable(id="data-table")
-            yield Markdown(MARKDOWN_EXAMPLE, id="markdown")
+            with VerticalScroll(id="markdown"):
+                yield Markdown(MARKDOWN_EXAMPLE)
 
     def on_button_pressed(self, event: Button.Pressed) -> None:
         self.query_one(ContentSwitcher).current = event.button.id  # (5)!

src/textual/cli/previews/easing.py

@@ -79,7 +79,7 @@ class EasingApp(App):
                 yield duration_input
             with Horizontal():
                 yield self.animated_bar
-                yield Container(self.opacity_widget, id="other")
+                yield VerticalScroll(self.opacity_widget, id="other")
             yield Footer()
 
     def on_button_pressed(self, event: Button.Pressed) -> None:

tests/snapshot_tests/snapshot_apps/auto-table.py

@@ -2,7 +2,7 @@ from os import urandom
 from random import randrange
 
 from textual.app import App
-from textual.containers import Container, Horizontal, Vertical
+from textual.containers import Container, Horizontal, ScrollableContainer, Vertical
 from textual.screen import Screen
 from textual.widgets import DataTable, Header, Label
 
@@ -109,7 +109,7 @@ class Rendering(LabeledBox):
 
         super().__init__(
             "",
-            Container(
+            ScrollableContainer(
                 Horizontal(self.__info, id="issue-info"),
                 Horizontal(*[Status(str(i)) for i in range(4)], id="statuses-box"),
                 id="issues-box",