mirror of
https://github.com/tc39/test262.git
synced 2025-11-03 21:24:30 +01:00
47 lines
1.3 KiB
JavaScript
47 lines
1.3 KiB
JavaScript
// This file was procedurally generated from the following sources:
|
|
// - src/arguments/args-trailing-comma-null.case
|
|
// - src/arguments/default/gen-func-expr.template
|
|
/*---
|
|
description: A trailing comma after null should not increase the arguments.length (generator function expression)
|
|
esid: sec-arguments-exotic-objects
|
|
features: [generators]
|
|
flags: [generated]
|
|
info: |
|
|
9.4.4 Arguments Exotic Objects
|
|
|
|
Most ECMAScript functions make an arguments object available to their code. Depending upon the
|
|
characteristics of the function definition, its arguments object is either an ordinary object
|
|
or an arguments exotic object.
|
|
|
|
|
|
Trailing comma in the arguments list
|
|
|
|
Left-Hand-Side Expressions
|
|
|
|
Arguments :
|
|
( )
|
|
( ArgumentList )
|
|
( ArgumentList , )
|
|
|
|
ArgumentList :
|
|
AssignmentExpression
|
|
... AssignmentExpression
|
|
ArgumentList , AssignmentExpression
|
|
ArgumentList , ... AssignmentExpression
|
|
---*/
|
|
|
|
|
|
var callCount = 0;
|
|
// Stores a reference `ref` for case evaluation
|
|
var ref;
|
|
ref = function*() {
|
|
assert.sameValue(arguments.length, 2);
|
|
assert.sameValue(arguments[0], 42);
|
|
assert.sameValue(arguments[1], null);
|
|
callCount = callCount + 1;
|
|
};
|
|
|
|
ref(42, null,).next();
|
|
|
|
assert.sameValue(callCount, 1, 'generator function invoked exactly once');
|