tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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Object-getErrorMessageName.js (963B)

      1 // Debugger.Object.prototype.getErrorMessageName returns the error message name
      2 // associated with some error object.
      3 
      4 var g = newGlobal({newCompartment: true});
      5 var dbg = new Debugger();
      6 var gw = dbg.addDebuggee(g);
      7 
      8 assertEq(gw.executeInGlobal("(42).toString(0)").throw.errorMessageName, "JSMSG_BAD_RADIX");
      9 
     10 // Custom errors have no error message name.
     11 assertEq(gw.executeInGlobal("throw new Error()").throw.errorMessageName, undefined);
     12 
     13 // Ensure that the method works across globals.
     14 g.eval(`var g = newGlobal({newCompartment: true});
     15        g.eval('var err; try { (42).toString(0); } catch (e) { err = e; }');
     16        var err2 = g.err;`);
     17 assertEq(gw.executeInGlobal("throw err2").throw.errorMessageName, "JSMSG_BAD_RADIX");
     18 
     19 // Ensure that non-error objects return undefined.
     20 const Args = [
     21    "1",
     22    "'blah'",
     23    "({})",
     24    "[]",
     25    "() => 1"
     26 ]
     27 
     28 for (let arg of Args)
     29    assertEq(gw.executeInGlobal(`${arg}`).return.errorMessageName, undefined);