Forbid uses of unwrap() in the code (#7795)

tests/egui_tests/tests/test_widgets.rs

@@ -1,3 +1,5 @@
+#![expect(clippy::unwrap_used)] // it's a test
+
 use egui::accesskit::Role;
 use egui::load::SizedTexture;
 use egui::{

tests/test_inline_glow_paint/src/main.rs

@@ -1,6 +1,10 @@
 #![cfg_attr(not(debug_assertions), windows_subsystem = "windows")] // hide console window on Windows in release
-#![allow(rustdoc::missing_crate_level_docs)] // it's an example
-#![allow(clippy::undocumented_unsafe_blocks)]
+#![expect(
+    // it's a test:
+    clippy::undocumented_unsafe_blocks,
+    clippy::unwrap_used,
+    rustdoc::missing_crate_level_docs
+)]
 
 // Test that we can paint to the screen using glow directly.
 

tests/test_viewports/src/main.rs

@@ -1,5 +1,5 @@
 #![cfg_attr(not(debug_assertions), windows_subsystem = "windows")] // hide console window on Windows in release
-#![allow(rustdoc::missing_crate_level_docs)] // it's an example
+#![expect(clippy::unwrap_used, rustdoc::missing_crate_level_docs)] // it's a test
 
 use std::sync::Arc;