From d1428ef27c63d1a49a7e828608b71b41c596b4b3 Mon Sep 17 00:00:00 2001
From: bherbruck <brennen.herbruck@gmail.com>
Date: Sat, 10 Oct 2026 03:47:00 +0000
Subject: [PATCH] UI tests clear the frame's texture changes: no "Dropped
 TexturesDelta" panic in debug builds

drive_value_takes_the_keyboard and boundary_fill_finds_the_cells_and_fills_the_ticked_ones dropped egui's output with texture deltas still pending (epaint's debug check); they clear them as the scenario harness does. All ui-egui tests pass in a debug build.

Fixes #60

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01RjGw4gA5ZvKrU8MQP6sBgT
---
 crates/ui-egui/src/dialogs_assembly_tests.rs | 3 ++-
 crates/ui-egui/src/preselect_tests.rs        | 2 +-
 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/crates/ui-egui/src/dialogs_assembly_tests.rs b/crates/ui-egui/src/dialogs_assembly_tests.rs
index 0785ca91..083645fe 100644
--- a/crates/ui-egui/src/dialogs_assembly_tests.rs
+++ b/crates/ui-egui/src/dialogs_assembly_tests.rs
@@ -250,7 +250,8 @@ fn drive_value_takes_the_keyboard() {
     let screen = egui::Rect::from_min_size(egui::Pos2::ZERO, egui::vec2(1600.0, 1000.0));
     let frame = |app: &mut SolveApp, events: Vec<egui::Event>| {
         let input = egui::RawInput { screen_rect: Some(screen), events, ..Default::default() };
-        ctx.run_ui(input, |ui| crate::dialogs::show(app, ui.ctx()))
+        // Nothing renders here: drop the frame's texture changes deliberately.
+        ctx.run_ui(input, |ui| crate::dialogs::show(app, ui.ctx())).textures_delta.clear();
     };
     frame(&mut app, vec![]);
     frame(&mut app, vec![]);
diff --git a/crates/ui-egui/src/preselect_tests.rs b/crates/ui-egui/src/preselect_tests.rs
index 8a79bbb1..f7bbfd89 100644
--- a/crates/ui-egui/src/preselect_tests.rs
+++ b/crates/ui-egui/src/preselect_tests.rs
@@ -297,7 +297,7 @@ fn boundary_fill_finds_the_cells_and_fills_the_ticked_ones() {
     app.dialog = Some(d);
     // The dialog finds the cells on its next frame.
     let ctx = egui::Context::default();
-    let _ = ctx.run_ui(Default::default(), |ui| crate::dialogs::show(&mut app, ui.ctx()));
+    ctx.run_ui(Default::default(), |ui| crate::dialogs::show(&mut app, ui.ctx())).textures_delta.clear();
     let mut d = app.dialog.take().unwrap();
     let Kind::BoundaryFill { cells, .. } = &mut d.kind else { panic!() };
     // Only A, only B, and both.