javascript 0.1.13

A JavaScript engine implementation in Rust
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

use javascript::{Value, evaluate_script};

// Initialize logger for these tests
#[ctor::ctor]
fn __init_test_logger() {
    let _ = env_logger::Builder::from_env(env_logger::Env::default()).is_test(true).try_init();
}

#[test]
fn object_literal_named_function_has_name() {
    let script = r#"
        (function(){
            let o = { x: function foo() { return 1; } };
            console.log(o.x());
            return o.x.name;
        })()
    "#;
    let res = evaluate_script(script, None::<&std::path::Path>);
    match res {
        Ok(Value::String(s)) => {
            let s = String::from_utf16_lossy(&s);
            assert_eq!(s, "foo");
        }
        other => panic!("Expected string result, got {:?}", other),
    }
}

#[test]
fn assigned_generator_named_function_has_name() {
    let script = r#"
        (function(){
            let o = {};
            o.x = function* foo() { yield 1; };
            console.log(o.x());
            console.log(o.x().next());
            console.log(o.x().next().value);
            return o.x.name;
        })()
    "#;
    let res = evaluate_script(script, None::<&std::path::Path>);
    match res {
        Ok(Value::String(s)) => {
            let s = String::from_utf16_lossy(&s);
            assert_eq!(s, "foo");
        }
        other => panic!("Expected string result, got {:?}", other),
    }
}

#[test]
fn assigned_async_named_function_has_name() {
    let script = r#"
        (function(){
            let o = {};
            o.x = async function foo() { return 99; };
            console.log(await o.x());
            o.x().then(v => console.log(v));
            return o.x.name;
        })()
    "#;
    let res = evaluate_script(script, None::<&std::path::Path>);
    match res {
        Ok(Value::String(s)) => {
            let s = String::from_utf16_lossy(&s);
            assert_eq!(s, "foo");
        }
        other => panic!("Expected string result, got {:?}", other),
    }
}