js/xpconnect/tests/unit/test_FrameScriptEnvironment.js

   1 let ppmm = Services.ppmm.getChildAt(0);
   2
   3 Services.prefs.setBoolPref("security.allow_eval_with_system_principal", true);
   4 registerCleanupFunction(() => {
   5   Services.prefs.clearUserPref("security.allow_eval_with_system_principal");
   6 });
   7
   8 add_task(async function test_bindings() {
   9     let {strict, bound} = await new Promise(function(resolve) {
  10         // Use a listener to get results from child
  11         ppmm.addMessageListener("results", function listener(msg) {
  12             ppmm.removeMessageListener("results", listener);
  13             resolve(msg.data);
  14         });
  15
  16         // Bind vars in first process script
  17         ppmm.loadProcessScript("resource://test/environment_script.js", false);
  18
  19         // Check visibility in second process script
  20         ppmm.loadProcessScript(`data:,
  21             let strict = (function() { return this; })() === undefined;
  22             var bound = "";
  23
  24             try { void vu; bound += "vu,"; } catch (e) {}
  25             try { void vq; bound += "vq,"; } catch (e) {}
  26             try { void vl; bound += "vl,"; } catch (e) {}
  27             try { void gt; bound += "gt,"; } catch (e) {}
  28             try { void ed; bound += "ed,"; } catch (e) {}
  29             try { void ei; bound += "ei,"; } catch (e) {}
  30             try { void fo; bound += "fo,"; } catch (e) {}
  31             try { void fi; bound += "fi,"; } catch (e) {}
  32             try { void fd; bound += "fd,"; } catch (e) {}
  33
  34             sendAsyncMessage("results", { strict, bound });
  35             `, false);
  36     });
  37
  38     // FrameScript loader should share |this| access
  39     if (strict) {
  40         if (bound != "gt,ed,ei,fo,")
  41             throw new Error("Unexpected global binding set - " + bound);
  42     } else {
  43         if (bound != "gt,ed,ei,fo,fi,fd,")
  44             throw new Error("Unexpected global binding set - " + bound);
  45     }
  46 });