function-copy-name-and-length-fails-error-realm.js

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// |reftest| shell-option(--enable-shadow-realms) skip-if(!xulRuntime.shell)

var sr = new ShadowRealm();

var id = sr.evaluate(`x => x()`);

// |id| is a Function from the current realm and _not_ from ShadowRealm.

assertEq(id instanceof Function, true);

function f() {

  return 1;

// Smoke test: Ensure calling |f| through the ShadowRealm works correctly.

assertEq(id(f), 1);

// Add an accessor for "name" which throws. This will lead to throwing an

// exception in CopyNameAndLength. The thrown exception should be from the

// realm of |id|, i.e. the current realm.

Object.defineProperty(f, "name", {

  get() { throw new Error; }

});

assertThrowsInstanceOf(() => id(f), TypeError);

if (typeof reportCompare === 'function')

  reportCompare(true, true);