Fix tests.

CHANGELOG.md

@@ -11,6 +11,10 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 
 - `Placeholder` now sets its color cycle per app https://github.com/Textualize/textual/issues/2590
 
+### Removed
+
+- `Placeholder.reset_color_cycle`
+
 ## [0.25.0] - 2023-05-17
 
 ### Changed

docs/examples/styles/width_comparison.py

@@ -1,6 +1,6 @@
 from textual.app import App
 from textual.containers import Horizontal
-from textual.widgets import Placeholder, Label, Static
+from textual.widgets import Label, Placeholder, Static
 
 
 class Ruler(Static):
@@ -9,7 +9,7 @@ class Ruler(Static):
         yield Label(ruler_text)
 
 
-class HeightComparisonApp(App):
+class WidthComparisonApp(App):
     def compose(self):
         yield Horizontal(
             Placeholder(id="cells"),  # (1)!
@@ -25,4 +25,6 @@ class HeightComparisonApp(App):
         yield Ruler()
 
 
-app = HeightComparisonApp(css_path="width_comparison.css")
+app = WidthComparisonApp(css_path="width_comparison.css")
+if __name__ == "__main__":
+    app.run()

tests/snapshot_tests/test_snapshots.py

@@ -91,7 +91,6 @@ def test_buttons_render(snap_compare):
 
 def test_placeholder_render(snap_compare):
     # Testing the rendering of the multiple placeholder variants and labels.
-    Placeholder.reset_color_cycle()
     assert snap_compare(WIDGET_EXAMPLES_DIR / "placeholder.py")
 
 
@@ -261,7 +260,6 @@ PATHS = [
 @pytest.mark.parametrize("file_name", PATHS)
 def test_css_property(file_name, snap_compare):
     path_to_app = STYLES_EXAMPLES_DIR / file_name
-    Placeholder.reset_color_cycle()
     assert snap_compare(path_to_app)