[Wip] CLI & Daemon

iota-cli/tests/settings_snapshot.rs

@@ -0,0 +1,76 @@
+use iota_cli::{
+    interaction_result::InteractionResult,
+    render_context::RenderContext,
+    screens::{
+        screens::{AppEvent, HitMap, Screen, UiEvent},
+        settings::SettingsScreen,
+    },
+    theme::{ThemeName, resolve},
+};
+use ratatui::{Terminal, backend::TestBackend};
+use crossterm::event::{KeyCode, KeyEvent};
+
+fn buffer_text(terminal: &Terminal<TestBackend>) -> String {
+    terminal
+        .backend()
+        .buffer()
+        .content()
+        .iter()
+        .map(|cell| cell.symbol())
+        .collect()
+}
+
+#[tokio::test]
+async fn settings_preview_and_save_emit_typed_application_events() {
+    let mut screen = SettingsScreen::new(ThemeName::Ansi);
+    let preview = screen.handle_event(UiEvent::Key(KeyEvent::from(KeyCode::Right)));
+    let InteractionResult::AppTask { task } = preview else {
+        panic!("theme preview should emit an application task");
+    };
+    assert!(matches!(
+        task.await,
+        UiEvent::App(AppEvent::ApplyTheme {
+            theme: ThemeName::Surface,
+            persist: false
+        })
+    ));
+
+    let save = screen.handle_event(UiEvent::Key(KeyEvent::from(KeyCode::Enter)));
+    let InteractionResult::AppTask { task } = save else {
+        panic!("theme save should emit an application task");
+    };
+    assert!(matches!(
+        task.await,
+        UiEvent::App(AppEvent::SaveSettings {
+            theme: ThemeName::Surface,
+            color: _,
+            unicode: _
+        })
+    ));
+}
+
+#[test]
+fn settings_is_readable_in_every_theme_and_layout() {
+    for theme_name in ThemeName::ALL {
+        for (width, height) in [(42, 12), (72, 20), (100, 28)] {
+            let theme = resolve(theme_name);
+            let mut terminal = Terminal::new(TestBackend::new(width, height)).unwrap();
+            let screen = SettingsScreen::new(theme_name);
+            terminal
+                .draw(|frame| {
+                    screen.render(
+                        frame,
+                        frame.area(),
+                        &RenderContext { theme: &theme },
+                        &mut HitMap::default(),
+                    );
+                })
+                .unwrap();
+            let rendered = buffer_text(&terminal);
+            assert!(rendered.contains("Settings"));
+            assert!(rendered.contains("Theme:"));
+            assert!(rendered.contains("[OK] Healthy"));
+            assert!(rendered.contains("[FAIL] Failed"));
+        }
+    }
+}