revue 2.71.1

A Vue-style TUI framework for Rust with CSS styling
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

//! Conditional Dependency tests

#![allow(unused_imports)]

use revue::reactive::*;
use std::sync::atomic::{AtomicUsize, Ordering};
use std::sync::Arc;

#[test]
fn test_conditional_dependency_tracking() {
    let condition = signal(true);
    let a = signal(10);
    let b = signal(20);
    let result = Arc::new(AtomicUsize::new(0));
    let run_count = Arc::new(AtomicUsize::new(0));

    let res = result.clone();
    let count = run_count.clone();
    let cond = condition.clone();
    let a_clone = a.clone();
    let b_clone = b.clone();

    let _effect = effect(move || {
        let val = if cond.get() {
            a_clone.get()
        } else {
            b_clone.get()
        };
        res.store(val as usize, Ordering::SeqCst);
        count.fetch_add(1, Ordering::SeqCst);
    });

    // Initial: condition=true, so depends on a
    assert_eq!(result.load(Ordering::SeqCst), 10);
    assert_eq!(run_count.load(Ordering::SeqCst), 1);

    // Change a - should trigger (we depend on it)
    a.set(100);
    assert_eq!(result.load(Ordering::SeqCst), 100);
    assert!(run_count.load(Ordering::SeqCst) >= 2);

    let prev_count = run_count.load(Ordering::SeqCst);

    // Change b - in current simple implementation, this will trigger
    // because we track all reads during effect execution
    b.set(200);
    // This may or may not trigger depending on implementation
    let _ = run_count.load(Ordering::SeqCst) >= prev_count;

    // Change condition to false
    condition.set(false);
    assert_eq!(result.load(Ordering::SeqCst), 200);
}

#[test]
fn test_nested_conditional_dependencies() {
    let flag1 = signal(true);
    let flag2 = signal(true);
    let a = signal(1);
    let b = signal(2);
    let c = signal(3);
    let d = signal(4);
    let result = Arc::new(AtomicUsize::new(0));

    let res = result.clone();
    let f1 = flag1.clone();
    let f2 = flag2.clone();
    let a_c = a.clone();
    let b_c = b.clone();
    let c_c = c.clone();
    let d_c = d.clone();

    let _effect = effect(move || {
        let val = if f1.get() {
            if f2.get() {
                a_c.get()
            } else {
                b_c.get()
            }
        } else {
            if f2.get() {
                c_c.get()
            } else {
                d_c.get()
            }
        };
        res.store(val as usize, Ordering::SeqCst);
    });

    // flag1=T, flag2=T -> a=1
    assert_eq!(result.load(Ordering::SeqCst), 1);

    // Change to flag1=T, flag2=F -> b=2
    flag2.set(false);
    assert_eq!(result.load(Ordering::SeqCst), 2);

    // Change to flag1=F, flag2=F -> d=4
    flag1.set(false);
    assert_eq!(result.load(Ordering::SeqCst), 4);

    // Change to flag1=F, flag2=T -> c=3
    flag2.set(true);
    assert_eq!(result.load(Ordering::SeqCst), 3);
}