fission-test 0.2.0

Headless and runtime testing helpers for Fission applications
Documentation 
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

use anyhow::Result;
use fission_core::ui::{Node, TextInput};
use fission_core::{InputEvent, LayoutPoint, View, Widget};
use fission_ir::Role;
use fission_test::{detect_ir_cycle, TestHarness};

#[derive(Debug, Default, Clone)]
struct AppState {
    _text: String,
    checked: bool,
}
impl fission_core::action::AppState for AppState {}

#[test]
fn text_input_focus_has_no_ir_cycles() -> Result<()> {
    struct Root;
    impl Widget<AppState> for Root {
        fn build(
            &self,
            _ctx: &mut fission_core::BuildCtx<AppState>,
            _view: &View<AppState>,
        ) -> Node {
            TextInput {
                value: String::new(),
                placeholder: Some("type".into()),
                width: Some(200.0),
                height: Some(40.0),
                ..Default::default()
            }
            .into()
        }
    }

    let mut h = TestHarness::new(AppState::default()).with_root_widget(Root);
    h.pump()?;

    // Find TextInput semantics node rect center
    let ir = h.last_ir.as_ref().unwrap();
    let mut text_node = None;
    for (id, node) in &ir.nodes {
        if let fission_ir::Op::Semantics(s) = &node.op {
            if s.role == Role::TextInput {
                text_node = Some(*id);
                break;
            }
        }
    }
    let id = text_node.expect("TextInput semantics not found");
    let rect = h.last_snapshot.as_ref().unwrap().get_node_rect(id).unwrap();
    let center = LayoutPoint::new(
        rect.x() + rect.width() / 2.0,
        rect.y() + rect.height() / 2.0,
    );

    h.send_event(InputEvent::Pointer(
        fission_core::event::PointerEvent::Down {
            point: center,
            button: fission_core::event::PointerButton::Primary,
            modifiers: 0,
        },
    ))?;
    h.pump()?;

    let ir2 = h.last_ir.as_ref().unwrap();
    assert!(
        detect_ir_cycle(ir2).is_none(),
        "IR contains cycle after focusing TextInput"
    );
    Ok(())
}

#[test]
fn checkbox_toggle_has_no_ir_cycles() -> Result<()> {
    use fission_core::view::Widget;
    use fission_core::{BuildCtx, View};
    use fission_widgets::Checkbox;

    use fission_core::event::{PointerButton, PointerEvent};

    #[fission_macros::fission_reducer(Toggle)]
    fn on_toggle(state: &mut AppState) {
        state.checked = !state.checked;
    }

    struct Root;
    impl Widget<AppState> for Root {
        fn build(
            &self,
            ctx: &mut BuildCtx<AppState>,
            view: &View<AppState>,
        ) -> fission_core::ui::Node {
            Checkbox {
                checked: view.state.checked,
                on_toggle: Some(fission_core::with_reducer!(ctx, Toggle, on_toggle)),
                label: Some("check".into()),
                ..Default::default()
            }
            .into()
        }
    }

    let mut h = TestHarness::new(AppState::default()).with_root_widget(Root);
    h.pump()?;

    // Locate checkbox semantics and click it (down + up)
    let ir = h.last_ir.as_ref().unwrap();
    let mut cb_node = None;
    for (id, node) in &ir.nodes {
        if let fission_ir::Op::Semantics(s) = &node.op {
            if s.role == Role::Checkbox {
                cb_node = Some(*id);
                break;
            }
        }
    }
    let id = cb_node.expect("Checkbox semantics not found");
    let rect = h.last_snapshot.as_ref().unwrap().get_node_rect(id).unwrap();
    let center = LayoutPoint::new(
        rect.x() + rect.width() / 2.0,
        rect.y() + rect.height() / 2.0,
    );

    h.send_event(fission_core::InputEvent::Pointer(PointerEvent::Down {
        point: center,
        button: PointerButton::Primary,
        modifiers: 0,
    }))?;
    h.pump()?;
    h.send_event(fission_core::InputEvent::Pointer(PointerEvent::Up {
        point: center,
        button: PointerButton::Primary,
        modifiers: 0,
    }))?;
    h.pump()?;

    let ir2 = h.last_ir.as_ref().unwrap();
    if let Some(cycle) = fission_test::detect_ir_cycle(ir2) {
        panic!("IR cycle after checkbox toggle: {:?}", cycle);
    }
    Ok(())
}