Object-getErrorMessageName.js

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// Debugger.Object.prototype.getErrorMessageName returns the error message name

// associated with some error object.

var g = newGlobal({newCompartment: true});

var dbg = new Debugger();

var gw = dbg.addDebuggee(g);

assertEq(gw.executeInGlobal("(42).toString(0)").throw.errorMessageName, "JSMSG_BAD_RADIX");

// Custom errors have no error message name.

assertEq(gw.executeInGlobal("throw new Error()").throw.errorMessageName, undefined);

// Ensure that the method works across globals.

g.eval(`var g = newGlobal({newCompartment: true});

        g.eval('var err; try { (42).toString(0); } catch (e) { err = e; }');

        var err2 = g.err;`);

assertEq(gw.executeInGlobal("throw err2").throw.errorMessageName, "JSMSG_BAD_RADIX");

// Ensure that non-error objects return undefined.

const Args = [

    "1",

    "'blah'",

    "({})",

    "[]",

    "() => 1"

for (let arg of Args)

    assertEq(gw.executeInGlobal(`${arg}`).return.errorMessageName, undefined);