M7: test Type settings' width through the whole app in Georgian and French (#1029)

crates/ui-egui/tests/type_settings_long_labels.rs

@@ -0,0 +1,44 @@
+//! #1029, through the whole app: in a language whose labels run past Type settings' label column,
+//! the popover keeps its width while it stays open. French does with Inter (release builds, the
+//! report); Georgian does with egui's own fonts too (CI, which builds without craft-fonts). Its own
+//! test binary, since the UI language is one setting for the whole process.
+#![allow(clippy::unwrap_used)]
+
+use egui::{Id, Popup, Pos2, RawInput, Rect, vec2};
+use figcraft_engine::Session;
+use figcraft_ui_egui::{FigApp, NoServices};
+use serde_json::json;
+
+/// The Type settings popover's width over the frames it is open, the UI in `language`.
+fn widths(language: &str) -> Vec<f32> {
+    let mut s = Session::new();
+    s.execute("pref.language", &json!({"language": language})).unwrap();
+    // Truncating text also shows Max lines.
+    let text = s.execute("text.create", &json!({"text": "Type", "props": {"textAutoResize": "truncate"}})).unwrap()["id"].clone();
+    s.execute("select.set", &json!({"ids": [text]})).unwrap();
+    let ctx = egui::Context::default();
+    let mut app = FigApp::new(s, Box::new(NoServices));
+    let open = Id::new("ty_settings_open");
+    let mut widths = Vec::new();
+    for i in 0..40 {
+        if i == 3 {
+            Popup::open_id(&ctx, open);
+        }
+        let raw =
+            RawInput { screen_rect: Some(Rect::from_min_size(Pos2::ZERO, vec2(1440.0, 900.0))), time: Some(i as f64 / 60.0), ..Default::default() };
+        ctx.run_ui(raw, |ui| app.ui(ui)).textures_delta.clear();
+        widths.extend(ctx.memory(|m| m.area_rect(open)).map(|r| r.width()));
+    }
+    widths
+}
+
+#[test]
+fn type_settings_keeps_its_width_with_labels_longer_than_their_column() {
+    for language in ["ka", "fr"] {
+        let w = widths(language);
+        assert!(w.len() > 30, "{language}: Type settings is open ({} frames)", w.len());
+        assert_ne!(figcraft_ui_egui::i18n::tr("Paragraph indent"), "Paragraph indent", "{language} is shown");
+        let (first, last) = (w[1], w[w.len() - 1]);
+        assert!((last - first).abs() < 0.01, "{language}: Type settings widens every frame: {first} → {last}");
+    }
+}