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// This file was procedurally generated from the following sources:
// - src/arguments/args-trailing-comma-undefined.case
// - src/arguments/default/gen-func-decl.template
/*---
description: A trailing comma after undefined should not increase the arguments.length (generator function declaration)
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
function* ref() {
assert.sameValue(arguments.length, 2);
assert.sameValue(arguments[0], 42);
assert.sameValue(arguments[1], undefined);
callCount = callCount + 1;
}
ref(42, undefined,).next();
assert.sameValue(callCount, 1, 'generator function invoked exactly once');
reportCompare(0, 0);
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