tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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cross-compartment.js (2953B)

      1 // |reftest| skip-if(!this.hasOwnProperty("Intl"))
      2 
      3 var otherGlobal = newGlobal();
      4 
      5 var numberFormat = new Intl.NumberFormat();
      6 var ccwNumberFormat = new otherGlobal.Intl.NumberFormat();
      7 
      8 // Test Intl.NumberFormat.prototype.format with a CCW object.
      9 var Intl_NumberFormat_format_get = Object.getOwnPropertyDescriptor(Intl.NumberFormat.prototype, "format").get;
     10 
     11 assertEq(Intl_NumberFormat_format_get.call(ccwNumberFormat)(0),
     12         Intl_NumberFormat_format_get.call(numberFormat)(0));
     13 
     14 // Test Intl.NumberFormat.prototype.formatToParts with a CCW object.
     15 var Intl_NumberFormat_formatToParts = Intl.NumberFormat.prototype.formatToParts;
     16 
     17 assertEq(deepEqual(Intl_NumberFormat_formatToParts.call(ccwNumberFormat, 0),
     18                   Intl_NumberFormat_formatToParts.call(numberFormat, 0)),
     19         true);
     20 
     21 // Test Intl.NumberFormat.prototype.resolvedOptions with a CCW object.
     22 var Intl_NumberFormat_resolvedOptions = Intl.NumberFormat.prototype.resolvedOptions;
     23 
     24 assertEq(deepEqual(Intl_NumberFormat_resolvedOptions.call(ccwNumberFormat),
     25                   Intl_NumberFormat_resolvedOptions.call(numberFormat)),
     26         true);
     27 
     28 // Special case for Intl.NumberFormat: The Intl fallback symbol.
     29 
     30 function fallbackSymbol(global) {
     31    var NF = global.Intl.NumberFormat;
     32    return Object.getOwnPropertySymbols(NF.call(Object.create(NF.prototype)))[0];
     33 }
     34 
     35 const intlFallbackSymbol = fallbackSymbol(this);
     36 const otherIntlFallbackSymbol = fallbackSymbol(otherGlobal);
     37 assertEq(intlFallbackSymbol === otherIntlFallbackSymbol, false);
     38 
     39 // Test when the fallback symbol points to a CCW NumberFormat object.
     40 var objWithFallbackCCWNumberFormat = {
     41    __proto__: Intl.NumberFormat.prototype,
     42    [intlFallbackSymbol]: ccwNumberFormat,
     43 };
     44 
     45 assertEq(Intl_NumberFormat_format_get.call(objWithFallbackCCWNumberFormat)(0),
     46         Intl_NumberFormat_format_get.call(numberFormat)(0));
     47 
     48 assertEq(deepEqual(Intl_NumberFormat_resolvedOptions.call(objWithFallbackCCWNumberFormat),
     49                   Intl_NumberFormat_resolvedOptions.call(numberFormat)),
     50         true);
     51 
     52 // Ensure the fallback symbol(s) are not accessed for CCW NumberFormat objects.
     53 var ccwNumberFormatWithPoisonedFallback = new otherGlobal.Intl.NumberFormat();
     54 Object.setPrototypeOf(ccwNumberFormatWithPoisonedFallback, Intl.NumberFormat.prototype);
     55 Object.defineProperty(ccwNumberFormatWithPoisonedFallback, intlFallbackSymbol, {
     56    get() { throw new Error(); }
     57 });
     58 Object.defineProperty(ccwNumberFormatWithPoisonedFallback, otherIntlFallbackSymbol, {
     59    get() { throw new Error(); }
     60 });
     61 
     62 assertEq(Intl_NumberFormat_format_get.call(ccwNumberFormatWithPoisonedFallback)(0),
     63         Intl_NumberFormat_format_get.call(numberFormat)(0));
     64 
     65 assertEq(deepEqual(Intl_NumberFormat_resolvedOptions.call(ccwNumberFormatWithPoisonedFallback),
     66                   Intl_NumberFormat_resolvedOptions.call(numberFormat)),
     67         true);
     68 
     69 if (typeof reportCompare === "function")
     70    reportCompare(true, true);