1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143

use std::sync::{
    Arc,
    Mutex,
};

use accesskit::{
    NodeBuilder,
    Role,
};
use dioxus_core::{
    fc_to_builder,
    Element,
    VirtualDom,
};
use dioxus_core_macro::rsx;
use dioxus_signals::{
    GlobalSignal,
    Readable,
};
use freya_components::NativeContainer;
use freya_core::prelude::{
    EventMessage,
    *,
};
use freya_engine::prelude::*;
use tokio::sync::{
    broadcast,
    mpsc::unbounded_channel,
    watch,
};
use winit::window::CursorIcon;

use crate::{
    config::TestingConfig,
    test_handler::TestingHandler,
    test_utils::TestUtils,
    SCALE_FACTOR,
};

/// Run a Component in a headless testing environment.
///
/// ```rust
/// # use freya_testing::prelude::*;
/// # use freya::prelude::*;
/// # let rt = tokio::runtime::Builder::new_current_thread()
/// # .enable_all()
/// # .build()
/// # .unwrap();
/// # let _guard = rt.enter();
/// fn app() -> Element {
///     rsx!(
///         rect {
///             label {
///                 "Hello, World!"
///             }
///         }
///     )
/// }
///
/// # rt.block_on(async move {
/// let mut utils = launch_test(app);
///
/// let root = utils.root();
/// let rect = root.get(0);
/// let label = rect.get(0);
/// let text = label.get(0);
///
/// assert_eq!(text.text(), Some("Hello, World!"));
/// # });
/// ```
pub fn launch_test(root: AppComponent) -> TestingHandler<()> {
    launch_test_with_config(root, TestingConfig::default())
}

/// Run a Component in a headless testing environment
pub fn launch_test_with_config<T: 'static + Clone>(
    root: AppComponent,
    config: TestingConfig<T>,
) -> TestingHandler<T> {
    let vdom = with_accessibility(root);
    let fdom = FreyaDOM::default();
    let sdom = SafeDOM::new(fdom);

    let (event_emitter, event_receiver) = unbounded_channel();
    let (platform_event_emitter, platform_event_receiver) = unbounded_channel::<EventMessage>();
    let (platform_sender, platform_receiver) = watch::channel(NativePlatformState {
        focused_accessibility_id: ACCESSIBILITY_ROOT_ID,
        focused_accessibility_node: NodeBuilder::new(Role::Window).build(),
        preferred_theme: PreferredTheme::default(),
        navigation_mode: NavigationMode::default(),
        information: PlatformInformation::new(config.size, false, false, false),
        scale_factor: SCALE_FACTOR,
    });
    let mut font_collection = FontCollection::new();
    let font_mgr = FontMgr::default();
    font_collection.set_dynamic_font_manager(font_mgr.clone());
    font_collection.set_default_font_manager(font_mgr.clone(), None);

    let mut handler = TestingHandler {
        vdom,
        events_queue: EventsQueue::new(),
        nodes_state: NodesState::default(),
        font_collection,
        font_mgr,
        event_emitter,
        event_receiver,
        utils: TestUtils { sdom },
        config,
        platform_event_emitter,
        platform_event_receiver,
        accessibility_tree: Arc::new(Mutex::new(AccessibilityTree::new(ACCESSIBILITY_ROOT_ID))),
        ticker_sender: broadcast::channel(5).0,
        cursor_icon: CursorIcon::default(),
        platform_sender,
        platform_receiver,
    };

    handler.init_dom();
    handler.resize(handler.config.size);

    handler
}

fn with_accessibility(app: AppComponent) -> VirtualDom {
    #[derive(Clone)]
    struct RootProps {
        app: AppComponent,
    }

    #[allow(non_snake_case)]
    fn Root(props: RootProps) -> Element {
        #[allow(non_snake_case)]
        let App = props.app;

        rsx!(NativeContainer {
            App {}
        })
    }

    VirtualDom::new_with_props(Root, RootProps { app })
}

type AppComponent = fn() -> Element;