source: node_modules/json-stable-stringify/test/cmp.js

'use strict';

var test = require('tape');
var stringify = require('../');

test('custom comparison function', function (t) {
        t.plan(1);
        var obj = { c: 8, b: [{ z: 6, y: 5, x: 4 }, 7], a: 3 };
        var s = stringify(obj, function (a, b) {
                return a.key < b.key ? 1 : -1;
        });
        t.equal(s, '{"c":8,"b":[{"z":6,"y":5,"x":4},7],"a":3}');
});

test('custom comparison function with get', function (t) {
        t.plan(2);

        stringify({ a: 1, b: 2 }, function (a, b) { // eslint-disable-line no-unused-vars
                t.equal(arguments[2], undefined, 'comparator options not passed when not explicitly requested');
        });

        var obj = { c: 8, b: [{ z: 7, y: 6, x: 4, v: 2, '!v': 3 }, 7], a: 3 };
        var s = stringify(obj, function (a, b, options) {
                var get = options.get;
                var v1 = (get('!' + a.key) || 0) + a.value;
                var v2 = (get('!' + b.key) || 0) + b.value;
                return v1 - v2;
        });
        t.equal(s, '{"c":8,"b":[{"!v":3,"x":4,"v":2,"y":6,"z":7},7],"a":3}');
});