char/avril

git clone https://git.t4t.associates/char/avril

Charlotte Somsnapshot: embed shared main and worker startup in the CLI688e96e2026-10-19

mod common;

#[test]
fn web_globals_expose_self_navigator_and_performance() {
    let output = common::run(
        r#"
        const global = globalThis;
        if (self !== global || self !== globalThis) throw Error('self alias');
        const selfDescriptor = Object.getOwnPropertyDescriptor(global, 'self');
        if (selfDescriptor.get === undefined || selfDescriptor.enumerable !== true || !selfDescriptor.configurable) throw Error('self descriptor');
        if (navigator !== global.navigator || !(navigator instanceof WorkerNavigator) || typeof Navigator !== 'undefined') throw Error('Navigator interface');
        if (Object.prototype.toString.call(navigator) !== '[object WorkerNavigator]') throw Error('Navigator tag');
        if (!navigator.userAgent.startsWith('avril/') || navigator.appCodeName !== 'Mozilla' || navigator.appName !== 'Netscape' || navigator.appVersion !== '4.0' || navigator.product !== 'Gecko') throw Error('Navigator identification');
        if (!navigator.platform || navigator.language !== 'en-US' || navigator.languages !== navigator.languages || !Object.isFrozen(navigator.languages) || navigator.languages.join() !== 'en-US' || !Number.isInteger(navigator.hardwareConcurrency) || navigator.hardwareConcurrency < 1 || !navigator.onLine) throw Error('Navigator mixins');
        const navigatorDescriptor = Object.getOwnPropertyDescriptor(global, 'navigator');
        if (!navigatorDescriptor.get || navigatorDescriptor.enumerable !== true || !navigatorDescriptor.configurable) throw Error('navigator descriptor');
        try { new WorkerNavigator(); throw Error('Navigator constructor was callable'); } catch (error) { if (!(error instanceof TypeError)) throw error; }
        const userAgent = Object.getOwnPropertyDescriptor(WorkerNavigator.prototype, 'userAgent').get;
        try { userAgent.call({}); throw Error('Navigator brand check'); } catch (error) { if (!(error instanceof TypeError)) throw error; }

        if (performance !== global.performance || !(performance instanceof Performance) || !(performance instanceof EventTarget)) throw Error('Performance identity');
        if (Object.prototype.toString.call(performance) !== '[object Performance]') throw Error('Performance tag');
        if (typeof performance.timeOrigin !== 'number' || performance.timeOrigin <= 0 || performance.now() < 0) throw Error('Performance clock');
        const opsSymbol = Symbol.for('__avril.ops');
        if (opsSymbol in global || global[opsSymbol] !== undefined || Reflect.ownKeys(global).includes(opsSymbol)) throw Error('Native op registry exposed');
        const before = performance.now(), after = performance.now();
        if (after < before) throw Error('Performance clock moved backwards');
        const sample = performance.now();
        if (Math.abs(sample * 10 - Math.round(sample * 10)) > 1e-7) throw Error('Performance precision');
        if (Math.abs(Date.now() - (performance.timeOrigin + performance.now())) > 5000) throw Error('Time origin');
        const start = performance.now();
        await new Promise(resolve => setTimeout(resolve, 10));
        if (performance.now() < start + 5) throw Error('Timer and performance clocks diverged');
        const json = performance.toJSON();
        if (Object.keys(json).join() !== 'timeOrigin' || json.timeOrigin !== performance.timeOrigin) throw Error('Performance JSON');
        for (const call of [() => new Performance(), () => performance.now.call({}), () => Object.getOwnPropertyDescriptor(Performance.prototype, 'timeOrigin').get.call({}), () => Performance.prototype.toJSON.call({})]) {
            try { call(); throw Error('Performance brand or constructor'); } catch (error) { if (!(error instanceof TypeError)) throw error; }
        }
        const performanceDescriptor = Object.getOwnPropertyDescriptor(global, 'performance');
        if (!performanceDescriptor.get || performanceDescriptor.enumerable !== true || !performanceDescriptor.configurable) throw Error('performance descriptor');
        if ('op_navigator_metadata' in global || 'op_timer_time_origin' in global) throw Error('Native helper leaked');
        console.log('globals');
    "#,
        &[],
    );
    assert_eq!(output.stdout, b"globals\n");
}

#[test]
fn base64_globals_follow_forgiving_decode_and_latin1_encode() {
    let output = common::run(
        r#"
        if (btoa('') !== '' || btoa('f') !== 'Zg==' || btoa('fo') !== 'Zm8=' || btoa('foo') !== 'Zm9v' || btoa('\x00\x80\xff') !== 'AID/') throw Error('btoa vectors');
        if (atob('') !== '' || atob(' Z m 9 v \t\n') !== 'foo' || atob('AQ') !== '\x01' || atob('AQI') !== '\x01\x02' || atob('AQIDBA==') !== '\x01\x02\x03\x04' || atob('AB==') !== '\x00') throw Error('atob vectors');
        if (atob(btoa('binary\x00\x80\xff')) !== 'binary\x00\x80\xff' || atob('\f') !== '') throw Error('Base64 round trip');
        const long = 'x'.repeat(10000);
        if (atob(btoa(long)) !== long) throw Error('Large Base64 round trip');
        function fails(fn, name, code) {
            try { fn(); throw Error('Expected ' + name); }
            catch (error) {
                if (error.message === 'Expected ' + name) throw error;
                if (!(error instanceof DOMException) || error.name !== name || error.code !== code) throw error;
            }
        }
        fails(() => btoa('éĀ'), 'InvalidCharacterError', 5);
        fails(() => btoa('\ud800'), 'InvalidCharacterError', 5);
        for (const value of ['A', 'AA===', 'AQ\v', 'AQ\u00a0', 'é', '====']) fails(() => atob(value), 'InvalidCharacterError', 5);
        for (const fn of [() => atob(), () => btoa()]) {
            try { fn(); throw Error('Missing argument accepted'); } catch (error) { if (!(error instanceof TypeError)) throw error; }
        }
        try { btoa(Symbol()); throw Error('Symbol accepted'); } catch (error) { if (!(error instanceof TypeError)) throw error; }
        if (DOMException.INVALID_CHARACTER_ERR !== 5 || DOMException.prototype.INVALID_CHARACTER_ERR !== 5 || new DOMException('', 'QuotaExceededError').code !== 22 || DOMException.QUOTA_EXCEEDED_ERR !== 22 || new DOMException('', 'TypeMismatchError').code !== 17 || DOMException.TYPE_MISMATCH_ERR !== 17) throw Error('DOMException legacy codes');
        for(const name of ['DOMStringSizeError','NoDataAllowedError','ValidationError']){
            if(new DOMException('',name).code!==0)throw Error('Obsolete exception name got a code');
        }
        const codeGetter=Object.getOwnPropertyDescriptor(DOMException.prototype,'code').get;
        try{codeGetter.call({name:'AbortError'});throw Error('Unbranded exception accepted');}catch(e){if(!(e instanceof TypeError))throw e;}
        const exception=new DOMException('','AbortError');
        Object.defineProperty(exception,'name',{value:'TimeoutError'});
        if(exception.code!==20)throw Error('Public name changed native exception code');
        if (atob.length !== 1 || btoa.length !== 1 || Object.getOwnPropertyDescriptor(globalThis, 'atob').enumerable !== true || Object.getOwnPropertyDescriptor(globalThis, 'btoa').enumerable !== true) throw Error('Base64 descriptors');
        console.log('base64');
    "#,
        &[],
    );
    assert_eq!(output.stdout, b"base64\n");
}

#[test]
fn web_globals_capture_intrinsics_and_native_clocks() {
    let output = common::run(
        r#"
        const now = performance.now.bind(performance), origin = performance.timeOrigin;
        String.prototype.charCodeAt = () => {throw Error('charCodeAt');};
        String.prototype.slice = () => {throw Error('slice');};
        String.fromCharCode = () => {throw Error('fromCharCode');};
        Array.prototype.push = () => {throw Error('push');};
        Array.prototype.join = () => {throw Error('join');};
        Date.now = () => {throw Error('Date.now');};
        if (btoa('foo') !== 'Zm9v' || atob('Zm9v') !== 'foo' || now() < 0 || performance.timeOrigin !== origin) throw Error('Captured operations');
        console.log('captured');
    "#,
        &[],
    );
    assert_eq!(output.stdout, b"captured\n");
}

#[test]
fn base64_operations_are_not_constructors_and_replaceable_globals_can_be_reassigned() {
    let output = common::run(
        r#"
        for(const fn of [atob,btoa]){
            try{new fn('');throw Error('Operation used as constructor');}catch(e){if(!(e instanceof TypeError))throw e;}
        }
        const original=self;
        self={replacement:true};
        performance={replacement:true};
        if(!self.replacement||!performance.replacement||globalThis!==original)throw Error('Globals not replaceable');
        for(const name of ['self','performance']){
            const descriptor=Object.getOwnPropertyDescriptor(globalThis,name);
            if(!descriptor.writable||!descriptor.enumerable||!descriptor.configurable||descriptor.get)throw Error('Replacement descriptor');
        }
        console.log('replaceable');
    "#,
        &[],
    );
    assert_eq!(output.stdout, b"replaceable\n");
}

#[test]
fn global_avril_symbol_marks_the_runtime_in_main_and_workers() {
    let output = common::run(
        r#"
        import { avril } from 'avril:std';
        const key = Symbol.for('runtime:avril');
        if (avril !== key) throw Error('avril symbol');
        if (globalThis[key] !== true || globalThis[avril] !== true) throw Error('Marker');
        const descriptor = Object.getOwnPropertyDescriptor(globalThis, key);
        if (!descriptor || descriptor.value !== true || descriptor.writable !== false || descriptor.enumerable !== false || descriptor.configurable !== false) throw Error('Descriptor');
        if (Reflect.ownKeys(globalThis).includes(key) !== true) throw Error('Own key');
        try { globalThis[key] = false; } catch {}
        if (globalThis[key] !== true) throw Error('Writable');
        try { Object.defineProperty(globalThis, key, { value: false }); throw Error('Redefined'); }
        catch (error) { if (!(error instanceof TypeError)) throw error; }
        console.log('marker');
    "#,
        &[],
    );
    assert_eq!(output.stdout, b"marker\n");
    let dir = tempfile::tempdir().unwrap();
    std::fs::write(
        dir.path().join("worker.js"),
        r#"
        postMessage(globalThis[Symbol.for('runtime:avril')]); close();
    "#,
    )
    .unwrap();
    std::fs::write(dir.path().join("main.js"), r#"
        const worker = new Worker(new URL('./worker.js', import.meta.url), { type: 'module' });
        const marker = await new Promise((resolve, reject) => { worker.onmessage = event => resolve(event.data); worker.onerror = reject; });
        if (marker !== true) throw Error('Worker marker');
        console.log('worker marker');
    "#).unwrap();
    let output = common::wait(
        std::process::Command::new(env!("CARGO_BIN_EXE_avril"))
            .arg("run")
            .arg(dir.path().join("main.js"))
            .stdout(std::process::Stdio::piped())
            .stderr(std::process::Stdio::piped())
            .spawn()
            .unwrap(),
    );
    assert!(
        output.status.success(),
        "{}",
        String::from_utf8_lossy(&output.stderr)
    );
    assert_eq!(output.stdout, b"worker marker\n");
}