test_FrameScriptEnvironment.js

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let ppmm = Services.ppmm.getChildAt(0);

Services.prefs.setBoolPref("security.allow_eval_with_system_principal", true);

registerCleanupFunction(() => {

  Services.prefs.clearUserPref("security.allow_eval_with_system_principal");

});

add_task(async function test_bindings() {

    let {strict, bound} = await new Promise(function(resolve) {

        // Use a listener to get results from child

        ppmm.addMessageListener("results", function listener(msg) {

            ppmm.removeMessageListener("results", listener);

            resolve(msg.data);

});

        // Bind vars in first process script

        ppmm.loadProcessScript("resource://test/environment_script.js", false);

        // Check visibility in second process script

        ppmm.loadProcessScript(`data:,

            let strict = (function() { return this; })() === undefined;

            var bound = "";

            try { void vu; bound += "vu,"; } catch (e) {}

            try { void vq; bound += "vq,"; } catch (e) {}

            try { void vl; bound += "vl,"; } catch (e) {}

            try { void gt; bound += "gt,"; } catch (e) {}

            try { void ed; bound += "ed,"; } catch (e) {}

            try { void ei; bound += "ei,"; } catch (e) {}

            try { void fo; bound += "fo,"; } catch (e) {}

            try { void fi; bound += "fi,"; } catch (e) {}

            try { void fd; bound += "fd,"; } catch (e) {}

            sendAsyncMessage("results", { strict, bound });

            `, false);

});

    // FrameScript loader should share |this| access

    if (strict) {

        if (bound != "gt,ed,ei,fo,")

            throw new Error("Unexpected global binding set - " + bound);

    } else {

        if (bound != "gt,ed,ei,fo,fi,fd,")

            throw new Error("Unexpected global binding set - " + bound);

});