node_modules/fast-json-stringify/test/surrogate.test.js

'use strict'

const { test } = require('node:test')
const validator = require('is-my-json-valid')
const build = require('..')

test('render a string with surrogate pairs as JSON:test 1', (t) => {
  t.plan(2)

  const schema = {
    title: 'surrogate',
    type: 'string'
  }

  const validate = validator(schema)
  const stringify = build(schema)
  const output = stringify('𝌆')

  t.assert.equal(output, '"𝌆"')
  t.assert.ok(validate(JSON.parse(output)), 'valid schema')
})

test('render a string with surrogate pairs as JSON: test 2', (t) => {
  t.plan(2)

  const schema = {
    title: 'long',
    type: 'string'
  }

  const validate = validator(schema)
  const stringify = build(schema)
  const output = stringify('\uD834\uDF06')

  t.assert.equal(output, '"𝌆"')
  t.assert.ok(validate(JSON.parse(output)), 'valid schema')
})

test('render a string with Unpaired surrogate code as JSON', (t) => {
  t.plan(2)

  const schema = {
    title: 'surrogate',
    type: 'string'
  }

  const validate = validator(schema)
  const stringify = build(schema)
  const output = stringify('\uDF06\uD834')
  t.assert.equal(output, JSON.stringify('\uDF06\uD834'))
  t.assert.ok(validate(JSON.parse(output)), 'valid schema')
})

test('render a string with lone surrogate code as JSON', (t) => {
  t.plan(2)

  const schema = {
    title: 'surrogate',
    type: 'string'
  }

  const validate = validator(schema)
  const stringify = build(schema)
  const output = stringify('\uDEAD')
  t.assert.equal(output, JSON.stringify('\uDEAD'))
  t.assert.ok(validate(JSON.parse(output)), 'valid schema')
})