rust_widgets 1.1.2

//! Integration tests for the Wayland backend.
//!
//! These tests verify platform creation, basic widget lifecycle,
//! clipboard roundtrip, list data methods, dialog creation, and
//! extended control creation for the Wayland platform backend.

use crate::platform::wayland::WaylandPlatform;
use crate::platform::Platform;

/// With a live compositor on `WAYLAND_DISPLAY`, creating a window must take the
/// *native* path: connect to the compositor, bind `wl_compositor` and
/// `xdg_wm_base`, and create a real `xdg_toplevel` surface.
///
/// This is the automated half of the "Wayland compositor interaction" gap: a
/// state-only backend never populates `native_session`, so asserting that it is
/// `Some` after `create_window` proves the protocol path actually ran rather
/// than silently falling back.
///
/// The test is opt-in — it skips (with a notice) when no compositor is present,
/// so a headless CI runner without weston does not fail. To run it against a
/// real compositor use `tools/run_wayland_compositor_tests.sh`, which fetches
/// and/or installs weston and drives both this test and its negative control.
#[cfg(all(feature = "wayland-native", target_os = "linux"))]
#[test]
fn native_session_binds_live_compositor() {
    use crate::core::PlatformFamily;
    use crate::platform::Platform as _;

    // No compositor advertised → nothing to verify here; skip rather than fail.
    if !compositor_advertised() {
        eprintln!("skipping: WAYLAND_DISPLAY is not set (no compositor to bind)");
        return;
    }

    let backend = WaylandPlatform::new();
    backend.init();
    assert_eq!(backend.family(), PlatformFamily::Desktop);

    let window = backend.create_window("NativeProbe", 0, 0, 320, 200);
    assert!(window > 0, "window should be created");

    // The state handle alone does not prove the native path; the session does.
    let guard = backend.native_session.lock().expect("native_session mutex poisoned");
    let session = guard.as_ref().expect(
        "native_session must be Some after create_window with a live compositor \
         (state-only fallback would leave it None)",
    );

    // Both globals must have been bound during the registry roundtrip.
    assert!(
        session.state.compositor.is_some(),
        "wl_compositor must be bound from the live compositor"
    );
    assert!(
        session.state.xdg_wm_base.is_some(),
        "xdg_wm_base must be bound from the live compositor"
    );

    eprintln!(
        "bound live compositor: wl_compositor=yes xdg_wm_base=yes dpi_scale={}",
        session.state.dpi_scale
    );
}

/// Whether the environment advertises a usable compositor.
///
/// An *empty* `WAYLAND_DISPLAY` does not name a socket, so it is treated the
/// same as an unset one — this lets the negative control run under
/// `WAYLAND_DISPLAY=` instead of being silently skipped.
#[cfg(all(feature = "wayland-native", target_os = "linux"))]
fn compositor_advertised() -> bool {
    matches!(std::env::var("WAYLAND_DISPLAY"), Ok(v) if !v.is_empty())
}

/// Without a compositor the backend must degrade to state-only and leave
/// `native_session` empty — this is the negative control for the test above.
#[cfg(all(feature = "wayland-native", target_os = "linux"))]
#[test]
fn native_session_stays_empty_without_compositor() {
    use crate::platform::Platform as _;

    if compositor_advertised() {
        eprintln!("skipping: a compositor is advertised, cannot test the fallback");
        return;
    }

    let backend = WaylandPlatform::new();
    backend.init();
    let window = backend.create_window("Fallback", 0, 0, 200, 120);
    assert!(window > 0, "state-only window should still be created");

    let guard = backend.native_session.lock().expect("native_session mutex poisoned");
    assert!(guard.is_none(), "native_session must stay empty when there is no compositor");
}

/// The event loop must observe `quit()` promptly even with no compositor: the
/// fd-based loop falls back to a bounded idle wait when there is no native
/// session, so `run()` cannot hang. This guards the quit-latency contract.
#[test]
fn run_exits_promptly_on_quit_without_compositor() {
    use std::sync::Arc;
    use std::time::{Duration, Instant};

    let backend = Arc::new(WaylandPlatform::new());
    backend.init();

    let runner = Arc::clone(&backend);
    let handle = std::thread::spawn(move || runner.run());

    // Let the loop enter its wait state, then quit from this thread.
    std::thread::sleep(Duration::from_millis(50));
    let started = Instant::now();
    backend.quit();

    // The loop re-checks the flag at least once per idle timeout, so joining
    // must complete well within a generous bound.
    let mut finished = false;
    for _ in 0..100 {
        if handle.is_finished() {
            finished = true;
            break;
        }
        std::thread::sleep(Duration::from_millis(20));
    }
    let elapsed = started.elapsed();
    if !finished {
        // Avoid a hung test process if the contract regressed.
        panic!("run() did not exit within 2s of quit() (elapsed {elapsed:?})");
    }
    handle.join().expect("event loop thread panicked");
    assert!(elapsed < Duration::from_millis(500), "quit() took too long: {elapsed:?}");
}

#[test]
fn platform_creates_and_runs() {
    let backend = WaylandPlatform::new();
    backend.init();
    assert_eq!(backend.backend_name(), "wayland");

    // Create a window and basic widgets.
    let window = backend.create_window("TestWindow", 50, 50, 400, 300);
    assert!(window > 0, "Window should be created");

    let button = backend.create_button(window, "Click", 10, 10, 80, 24);
    assert!(button > 0, "Button should be created");

    let label = backend.create_label(window, "Hello", 10, 40, 80, 24);
    assert!(label > 0, "Label should be created");

    let checkbox = backend.create_checkbox(window, "Check", 10, 70, 80, 24);
    assert!(checkbox > 0, "Checkbox should be created");

    let line_edit = backend.create_line_edit(window, "edit", 10, 100, 160, 24);
    assert!(line_edit > 0, "LineEdit should be created");

    let radio = backend.create_radio_button(window, "Radio", 10, 130, 80, 24);
    assert!(radio > 0, "RadioButton should be created");

    let slider = backend.create_slider(window, 10, 160, 200, 24);
    assert!(slider > 0, "Slider should be created");

    let progress = backend.create_progress_bar(window, 10, 190, 200, 24);
    assert!(progress > 0, "ProgressBar should be created");

    let combo = backend.create_combo_box(window, 10, 220, 140, 24);
    assert!(combo > 0, "ComboBox should be created");

    let list_box = backend.create_list_box(window, 10, 250, 140, 80);
    assert!(list_box > 0, "ListBox should be created");
}

#[test]
fn widget_lifecycle() {
    let backend = WaylandPlatform::new();
    backend.init();

    let window = backend.create_window("Lifecycle", 0, 0, 200, 120);
    assert!(window > 0, "Window should be created");

    let button = backend.create_button(window, "btn", 10, 10, 80, 24);
    assert!(button > 0, "Button should be created");

    // Text roundtrip.
    backend.set_widget_text(button, "updated");
    assert_eq!(backend.get_widget_text(button), "updated");

    // Show/hide roundtrip.
    backend.show_widget(button);
    assert!(backend.is_widget_visible(button), "Button should be visible after show");

    backend.hide_widget(button);
    assert!(!backend.is_widget_visible(button), "Button should be hidden after hide");

    // Enable/disable roundtrip.
    backend.set_widget_enabled(button, false);
    assert!(!backend.is_widget_enabled(button), "Button should be disabled");

    backend.set_widget_enabled(button, true);
    assert!(backend.is_widget_enabled(button), "Button should be enabled");

    // Geometry update.
    backend.set_widget_geometry(button, 20, 20, 120, 32);

    // Window-level lifecycle.
    backend.set_widget_text(window, "UpdatedTitle");
    assert_eq!(backend.get_widget_text(window), "UpdatedTitle");

    backend.show_widget(window);
    assert!(backend.is_widget_visible(window), "Window should be visible");

    backend.hide_widget(window);
    assert!(!backend.is_widget_visible(window), "Window should be hidden");
}

#[test]
fn clipboard_roundtrip() {
    let backend = WaylandPlatform::new();
    backend.init();

    // Create a window so the backend is fully initialised.
    let _window = backend.create_window("ClipTest", 0, 0, 200, 120);

    // Clipboard set/get roundtrip.
    assert!(backend.set_clipboard_text("wayland_clip_test"), "Should set clipboard text");
    assert_eq!(backend.get_clipboard_text(), "wayland_clip_test", "Clipboard text should match");

    // Overwrite with new content.
    assert!(backend.set_clipboard_text("updated_clip"), "Should overwrite clipboard");
    assert_eq!(backend.get_clipboard_text(), "updated_clip", "Updated clipboard text should match");

    // Empty string.
    assert!(backend.set_clipboard_text(""), "Should set empty clipboard");
    assert_eq!(backend.get_clipboard_text(), "", "Empty clipboard should match");
}

#[test]
fn combo_box_data_methods() {
    let backend = WaylandPlatform::new();
    backend.init();

    let window = backend.create_window("ComboTest", 0, 0, 200, 120);
    let combo = backend.create_combo_box(window, 10, 10, 140, 24);
    assert!(combo > 0, "ComboBox should be created");

    // Add items.
    assert!(backend.combo_box_add_item(combo, "Item A"), "Should add Item A");
    assert!(backend.combo_box_add_item(combo, "Item B"), "Should add Item B");
    assert!(backend.combo_box_add_item(combo, "Item C"), "Should add Item C");

    assert_eq!(backend.combo_box_item_count(combo), 3);

    // Item text retrieval.
    assert_eq!(backend.combo_box_item_text(combo, 0), Some("Item A".to_string()));
    assert_eq!(backend.combo_box_item_text(combo, 1), Some("Item B".to_string()));
    assert_eq!(backend.combo_box_item_text(combo, 2), Some("Item C".to_string()));
    assert_eq!(backend.combo_box_item_text(combo, 5), None);

    // Set and get current index.
    assert!(backend.combo_box_set_current_index(combo, 1), "Should set index 1");
    assert_eq!(backend.combo_box_current_index(combo), Some(1));

    // Clear items.
    assert!(backend.combo_box_clear_items(combo), "Should clear items");
    assert_eq!(backend.combo_box_item_count(combo), 0);
    assert_eq!(backend.combo_box_current_index(combo), None);
}

#[test]
fn list_box_data_methods() {
    let backend = WaylandPlatform::new();
    backend.init();

    let window = backend.create_window("ListBoxTest", 0, 0, 200, 200);
    let list_box = backend.create_list_box(window, 10, 10, 140, 80);
    assert!(list_box > 0, "ListBox should be created");

    // Add items.
    assert!(backend.list_box_add_item(list_box, "Item 1"), "Should add Item 1");
    assert!(backend.list_box_add_item(list_box, "Item 2"), "Should add Item 2");
    assert!(backend.list_box_add_item(list_box, "Item 3"), "Should add Item 3");

    assert_eq!(backend.list_box_item_count(list_box), 3);

    // Item text retrieval.
    assert_eq!(backend.list_box_item_text(list_box, 0), Some("Item 1".to_string()));
    assert_eq!(backend.list_box_item_text(list_box, 1), Some("Item 2".to_string()));
    assert_eq!(backend.list_box_item_text(list_box, 2), Some("Item 3".to_string()));

    // Set and get current index.
    assert!(backend.list_box_set_current_index(list_box, 1), "Should set index 1");
    assert_eq!(backend.list_box_current_index(list_box), Some(1));

    // Remove item at index 0 — remaining: [Item 2, Item 3], current should shift.
    assert!(backend.list_box_remove_item(list_box, 0), "Should remove Item 1");
    assert_eq!(backend.list_box_item_count(list_box), 2);
    assert_eq!(backend.list_box_item_text(list_box, 0), Some("Item 2".to_string()));
    // Current index adjusts from 1 to 0 after removal.
    assert_eq!(
        backend.list_box_current_index(list_box),
        Some(0),
        "Current index should adjust after removal"
    );

    // Clear items.
    assert!(backend.list_box_clear_items(list_box), "Should clear items");
    assert_eq!(backend.list_box_item_count(list_box), 0);
    assert_eq!(backend.list_box_current_index(list_box), None);
}

#[test]
fn menu_system() {
    let backend = WaylandPlatform::new();
    backend.init();

    let window = backend.create_window("MenuTest", 0, 0, 400, 300);
    let menu_bar = backend.create_menu_bar(window, 0, 0, 400, 24);
    assert!(menu_bar > 0, "MenuBar should be created");

    let file_menu = backend.create_menu(menu_bar, "File", 0, 24, 100, 24);
    assert!(file_menu > 0, "File menu should be created");

    let new_item = backend.menu_add_item(file_menu, "New", Some("Ctrl+N"));
    assert!(new_item > 0, "New menu item should be created");

    let open_item = backend.menu_add_item(file_menu, "Open", Some("Ctrl+O"));
    assert!(open_item > 0, "Open menu item should be created");

    let quit_item = backend.menu_add_item(file_menu, "Quit", Some("Ctrl+Q"));
    assert!(quit_item > 0, "Quit menu item should be created");

    assert!(
        backend.attach_menu_bar_to_window(window, menu_bar),
        "Should attach menu bar to window"
    );

    // Inject and poll menu trigger.
    assert!(backend.inject_menu_trigger(open_item), "Should inject menu trigger");
    assert_eq!(backend.poll_menu_triggered(), Some(open_item), "Should poll open item");

    // Second trigger.
    assert!(backend.inject_menu_trigger(quit_item), "Should inject quit trigger");
    assert_eq!(backend.poll_menu_triggered(), Some(quit_item), "Should poll quit item");
}

#[test]
fn widget_trigger_events() {
    use crate::platform::WidgetTriggerKind;

    let backend = WaylandPlatform::new();
    backend.init();

    let window = backend.create_window("TriggerTest", 0, 0, 200, 120);
    let button = backend.create_button(window, "Click", 10, 10, 80, 24);

    assert!(
        backend.inject_widget_trigger_event(button, WidgetTriggerKind::Clicked),
        "Should inject click event"
    );

    let event = backend.poll_widget_trigger_event();
    assert!(event.is_some(), "Should poll trigger event");
    assert_eq!(event.unwrap().widget_id, button);
    assert_eq!(event.unwrap().kind, WidgetTriggerKind::Clicked, "Should match Clicked kind");
}

#[test]
fn dialog_and_extended_controls() {
    let backend = WaylandPlatform::new();
    backend.init();

    let window = backend.create_window("DialogTest", 0, 0, 500, 400);

    // Dialogs.
    let msg_box = backend.create_message_box(window, "Title", "Hello", 10, 10, 300, 150);
    assert!(msg_box > 0, "MessageBox should be created");

    let file_dlg = backend.create_file_dialog(window, 10, 170, 400, 300);
    assert!(file_dlg > 0, "FileDialog should be created");

    let color_dlg = backend.create_color_dialog(window, 10, 10, 300, 300);
    assert!(color_dlg > 0, "ColorDialog should be created");

    let font_dlg = backend.create_font_dialog(window, 10, 10, 300, 300);
    assert!(font_dlg > 0, "FontDialog should be created");

    // Extended controls.
    let spin = backend.create_spin_box(window, 10, 10, 80, 24);
    assert!(spin > 0, "SpinBox should be created");

    let list_view = backend.create_list_view(window, 10, 40, 200, 150);
    assert!(list_view > 0, "ListView should be created");

    let scroll = backend.create_scroll_area(window, 10, 200, 200, 150);
    assert!(scroll > 0, "ScrollArea should be created");
}

#[test]
fn invalid_parent_and_kind_validation() {
    let backend = WaylandPlatform::new();
    backend.init();

    let window = backend.create_window("Validation", 0, 0, 400, 300);
    assert!(window > 0);

    let bogus = 9999;
    // Parented creators reject an unknown parent instead of orphaning widgets.
    assert_eq!(backend.create_button(bogus, "b", 0, 0, 10, 10), 0);
    assert_eq!(backend.create_label(bogus, "l", 0, 0, 10, 10), 0);
    assert_eq!(backend.create_combo_box(bogus, 0, 0, 10, 10), 0);
    assert_eq!(backend.create_list_box(bogus, 0, 0, 10, 10), 0);
    assert_eq!(backend.create_message_box(bogus, "t", "m", 0, 0, 10, 10), 0);
    assert_eq!(backend.create_file_dialog(bogus, 0, 0, 10, 10), 0);
    assert_eq!(backend.create_spin_box(bogus, 0, 0, 10, 10), 0);
    assert_eq!(backend.create_scroll_area(bogus, 0, 0, 10, 10), 0);

    // A menu must hang off a menu bar (or another menu), not a window.
    assert_eq!(backend.create_menu(window, "File", 0, 0, 10, 10), 0);

    let menu_bar = backend.create_menu_bar(window, 0, 0, 400, 24);
    assert!(menu_bar > 0);
    let menu = backend.create_menu(menu_bar, "File", 0, 0, 10, 10);
    assert!(menu > 0, "menu under a menu bar must succeed");

    // Menu item requires a menu parent.
    assert_eq!(backend.menu_add_item(window, "Bad", None), 0);
    let item = backend.menu_add_item(menu, "Open", None);
    assert!(item > 0);

    // Only a menu item may be injected as a menu trigger.
    assert!(!backend.inject_menu_trigger(window));
    assert!(!backend.inject_menu_trigger(menu_bar));
    assert!(backend.inject_menu_trigger(item));

    // attach_menu_bar_to_window validates both ids and their kinds.
    assert!(!backend.attach_menu_bar_to_window(bogus, menu_bar));
    assert!(!backend.attach_menu_bar_to_window(window, bogus));
    assert!(!backend.attach_menu_bar_to_window(window, item));
    assert!(backend.attach_menu_bar_to_window(window, menu_bar));

    // inject_widget_trigger_event rejects unknown ids.
    use crate::platform::WidgetTriggerKind;
    assert!(!backend.inject_widget_trigger_event(bogus, WidgetTriggerKind::Clicked));
    assert!(backend.inject_widget_trigger_event(window, WidgetTriggerKind::Clicked));
}

#[test]
fn drag_and_drop() {
    let backend = WaylandPlatform::new();
    backend.init();

    let window = backend.create_window("DragTest", 0, 0, 400, 300);
    let source = backend.create_button(window, "Drag", 10, 10, 80, 24);

    // Begin drag from source.
    assert!(backend.begin_drag(source, "text/plain", b"drag payload"), "Should begin drag");

    // Poll drop event.
    let drop = backend.poll_drop_event();
    assert!(drop.is_some(), "Should poll drop event");
    let drop = drop.unwrap();
    assert_eq!(drop.source_widget_id, source);
    assert_eq!(drop.mime, "text/plain");
    assert_eq!(drop.payload, b"drag payload");
}

#[test]
fn ime_and_accessibility() {
    let backend = WaylandPlatform::new();
    backend.init();

    let window = backend.create_window("IMETest", 0, 0, 400, 300);
    let line_edit = backend.create_line_edit(window, "input", 10, 10, 160, 24);

    // IME roundtrip.
    assert!(backend.set_widget_ime_enabled(line_edit, true), "Should enable IME");
    assert!(backend.is_widget_ime_enabled(line_edit), "IME should be enabled");

    assert!(backend.set_widget_ime_enabled(line_edit, false), "Should disable IME");
    assert!(!backend.is_widget_ime_enabled(line_edit), "IME should be disabled");

    // Accessibility name roundtrip.
    assert!(
        backend.set_widget_accessibility_name(line_edit, "InputField"),
        "Should set accessibility name"
    );
    assert_eq!(
        backend.get_widget_accessibility_name(line_edit),
        "InputField",
        "Accessibility name should match"
    );
}