Function test_nested_syncify

src/tests/test_stack_switching.py:408–464

(selenium)

@requires_jspi
@pytest.mark.requires_dynamic_linking
def test_nested_syncify(selenium):
    res = selenium.run_js(
        """
        async function f1() {
            await sleep(30);
            return await g1.callPromising();
        }
        async function f2() {
            await sleep(30);
            return await g2.callPromising();
        }
        async function getStuff() {
            await sleep(30);
            return "gotStuff";
        }
        pyodide.globals.set("f1", f1);
        pyodide.globals.set("f2", f2);
        pyodide.globals.set("getStuff", getStuff);

        pyodide.runPython(`
            from pyodide.ffi import run_sync
            from js import sleep
            def g():
                run_sync(sleep(25))
                return run_sync(f1())

            def g1():
                run_sync(sleep(25))
                return run_sync(f2())

            def g2():
                run_sync(sleep(25))
                return run_sync(getStuff())
        `);
        const l = pyodide.runPython("l = []; l")
        const g = pyodide.globals.get("g");
        const g1 = pyodide.globals.get("g1");
        const g2 = pyodide.globals.get("g2");
        const p = [];
        p.push(g.callPromising().then((res) => l.append(res)));
        p.push(pyodide.runPythonAsync(`
            from js import sleep
            for i in range(20):
                run_sync(sleep(9))
                l.append(i)
        `));
        await Promise.all(p);
        const res = l.toJs();
        for(let p of [l, g, g1, g2]) {
            p.destroy()
        }
        return res;
        """
    )
    assert "gotStuff" in res
    del res[res.index("gotStuff")]
    assert res == list(range(20))