How can I override the Math.random() standard function?

[fabiopolimeni]

Hi, I am seeking for a solution to replace the Math.random() with a custom solution. If I were in JS land, I could simply do something like this

Math.random = () => {return 1;}

So, what would be a good strategy to override that with Boa? Either rust or js solutions would be fine.

[jedel1043]

All builtin objects should be overridable from the context's intrinsics:

let context = &mut Context::default();
let math = context.intrinsics().objects().math();
math.set(
    js_string!("random"),
    NativeFunction::from_fn_ptr(|_, _, _| Ok(JsValue::from(1))).to_js_function(context.realm()),
    true,
    context,
)
.unwrap();

assert_eq!(
    context.eval(Source::from_bytes("Math.random()")),
    Ok(JsValue::Integer(1))
);
assert_eq!(
    context.eval(Source::from_bytes("Math.random()")),
    Ok(JsValue::Integer(1))
);

[fabiopolimeni]

Thank you!