1  'use strict';
 2  
 3  var test = require('tape');
 4  var stringify = require('../');
 5  
 6  test('nested', function (t) {
 7      t.plan(1);
 8      var obj = { c: 8, b: [{z:6,y:5,x:4},7], a: 3 };
 9      t.equal(stringify(obj), '{"a":3,"b":[{"x":4,"y":5,"z":6},7],"c":8}');
10  });
11  
12  test('cyclic (default)', function (t) {
13      t.plan(1);
14      var one = { a: 1 };
15      var two = { a: 2, one: one };
16      one.two = two;
17      try {
18          stringify(one);
19      } catch (ex) {
20          t.equal(ex.toString(), 'TypeError: Converting circular structure to JSON');
21      }
22  });
23  
24  test('cyclic (specifically allowed)', function (t) {
25      t.plan(1);
26      var one = { a: 1 };
27      var two = { a: 2, one: one };
28      one.two = two;
29      t.equal(stringify(one, {cycles:true}), '{"a":1,"two":{"a":2,"one":"__cycle__"}}');
30  });
31  
32  test('repeated non-cyclic value', function(t) {
33      t.plan(1);
34      var one = { x: 1 };
35      var two = { a: one, b: one };
36      t.equal(stringify(two), '{"a":{"x":1},"b":{"x":1}}');
37  });
38  
39  test('acyclic but with reused obj-property pointers', function (t) {
40      t.plan(1);
41      var x = { a: 1 };
42      var y = { b: x, c: x };
43      t.equal(stringify(y), '{"b":{"a":1},"c":{"a":1}}');
44  });