1// Copyright JS Foundation and other contributors, http://js.foundation 2// 3// Licensed under the Apache License, Version 2.0 (the "License"); 4// you may not use this file except in compliance with the License. 5// You may obtain a copy of the License at 6// 7// http://www.apache.org/licenses/LICENSE-2.0 8// 9// Unless required by applicable law or agreed to in writing, software 10// distributed under the License is distributed on an "AS IS" BASIS 11// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12// See the License for the specific language governing permissions and 13// limitations under the License. 14 15function check_syntax_error (code) 16{ 17 try { 18 eval (code) 19 assert (false) 20 } catch (e) { 21 assert (e instanceof SyntaxError) 22 } 23} 24 25function f(...a) 26{ 27 return a.length 28} 29 30check_syntax_error ("f(,)") 31check_syntax_error ("f(,1)") 32check_syntax_error ("f(1,,)") 33check_syntax_error ("f(1,,2)") 34 35assert(f(10) === 1) 36assert(f(10,) === 1) 37assert(f(10,11) === 2) 38assert(f(10,11,) === 2) 39