| description( |
| "This will test Array.toString with circular references. A circular reference is not detected and skipped: the conversion recurses until the stack is exhausted and then throws a RangeError." |
| ); |
| |
| var ary1=[1,2]; |
| ary1.push(ary1); |
| shouldThrow("ary1.toString()"); |
| |
| ary1=[1,2]; |
| var ary2=[3,4]; |
| ary1.push(ary2); |
| ary2.push(ary1); |
| shouldThrow("ary1.toString()"); |
| |
| ary1.push(5); |
| shouldThrow("ary1.toString()"); |
| |
| // An acyclic nesting converts normally, including when the same array occurs more than once. |
| var ary3=[3,4]; |
| shouldBe("[1,2,ary3].toString()", "'1,2,3,4'"); |
| shouldBe("[1,2,ary3,ary3,5].toString()", "'1,2,3,4,3,4,5'"); |
