json-canonicalize
Version:
JSON canonicalize function
109 lines • 4.71 kB
JavaScript
// tslint:disable max-line-length
// tslint:disable no-magic-numbers
import { canonicalize } from '../canonicalize';
describe('json canonicalize', () => {
it('should canonicalize primary types', () => {
const obj = {
text: '你好',
num: 47734.12,
dt: new Date('2018-12-17T01:08:19.719Z'),
arr: [56, 'a', '12', { t: '455A', a: 123 }],
};
expect(canonicalize(obj)).toEqual('{"arr":[56,"a","12",{"a":123,"t":"455A"}],"dt":"2018-12-17T01:08:19.719Z","num":47734.12,"text":"你好"}');
});
it('should canonicalize object attribute undefined', () => {
const obj = {
text: undefined,
num: 47734.12,
dt: new Date('2018-12-17T01:08:19.719Z'),
arr: [56, 'a', '12', { t: '455A', a: 123 }],
};
expect(canonicalize(obj)).toEqual('{"arr":[56,"a","12",{"a":123,"t":"455A"}],"dt":"2018-12-17T01:08:19.719Z","num":47734.12}');
});
it('should canonicalize array item undefined', () => {
const obj = {
arr: [undefined, null, 56, 'a', '12', { t: '455A', a: 123 }],
};
expect(canonicalize(obj)).toEqual('{"arr":[null,null,56,"a","12",{"a":123,"t":"455A"}]}');
});
it('should throw error when canonicalize array item circular ref', () => {
const obj = {
arr: [undefined, null, 56, 'a', '12', { t: '455A', a: 123 }],
};
obj.arr.push(obj.arr);
expect(() => canonicalize(obj)).toThrow('Circular reference detected');
});
it('should allow canonicalize array item circular ref', () => {
const obj = {
arr: [undefined, null, 56, 'a', '12', { t: '455A', a: 123 }],
};
obj.arr.push(obj.arr);
expect(canonicalize(obj, true)).toEqual('{"arr":[null,null,56,"a","12",{"a":123,"t":"455A"},"[Circular:$.arr]"]}');
});
it('should throw error when canonicalize obj item circular ref', () => {
const obj = {
text: undefined,
num: 47734.12,
dt: new Date('2018-12-17T01:08:19.719Z'),
arr: [56, 'a', '12', { t: '455A', a: 123 }],
};
obj.cir = obj;
// expect(canonicalize(obj)).toEqual(
// '{"arr":[56,"a","12",{"a":123,"t":"455A"}],"dt":"2018-12-17T01:08:19.719Z","num":47734.12}'
// )
expect(() => canonicalize(obj)).toThrow('Circular reference detected');
});
it('should allow canonicalize obj item circular ref', () => {
const obj = {
text: undefined,
num: 47734.12,
dt: new Date('2018-12-17T01:08:19.719Z'),
arr: [56, 'a', '12', { t: '455A', a: 123 }],
};
obj.cir = obj;
expect(canonicalize(obj, true)).toEqual('{"arr":[56,"a","12",{"a":123,"t":"455A"}],"cir":"[Circular:$]","dt":"2018-12-17T01:08:19.719Z","num":47734.12}');
});
it('should allow canonicalize obj item circular ref2', () => {
const obj = {
text: undefined,
num: 47734.12,
dt: new Date('2018-12-17T01:08:19.719Z'),
arr: [56, 'a', '12', { t: '455A', a: 123 }],
};
obj.cir = obj;
obj.arr.push(obj);
expect(canonicalize(obj, true)).toEqual('{"arr":[56,"a","12",{"a":123,"t":"455A"},"[Circular:$]"],"cir":"[Circular:$]","dt":"2018-12-17T01:08:19.719Z","num":47734.12}');
});
it('should not treat two references to the same sub-object as a circular reference', () => {
const sharedObject = { key: 'value' };
const obj = {
a: sharedObject,
b: sharedObject
};
expect(canonicalize(obj)).toEqual('{"a":{"key":"value"},"b":{"key":"value"}}');
});
it('should not treat two references to the same sub-object in an array as a circular reference', () => {
const sharedObject = { key: 'value' };
const obj = {
arr: [sharedObject, sharedObject]
};
expect(canonicalize(obj)).toEqual('{"arr":[{"key":"value"},{"key":"value"}]}');
});
it('should not treat two references to the same sub-array as a circular reference', () => {
const sharedArray = [1, 2];
const obj = {
a: sharedArray,
b: sharedArray
};
expect(canonicalize(obj)).toEqual('{"a":[1,2],"b":[1,2]}');
});
it('should not treat two references to the same sub-array as a circular reference2', () => {
const sharedArray = [1, 2];
const obj = {
a: [sharedArray],
b: sharedArray
};
expect(canonicalize(obj)).toEqual('{"a":[[1,2]],"b":[1,2]}');
});
});
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