@kingstinct/react-native-healthkit/src/utils/serializeDate.test.ts

React Native bindings for HealthKit

import serializeDate from './serializeDate'

describe('serializeDate', () => {
  it('should serialize zero date', () => {
    expect(serializeDate(new Date(0))).toBe('1970-01-01T00:00:00.000Z')
  })

  it('should serialize date', () => {
    const date = new Date()
    expect(serializeDate(date)).toBe(date.toISOString())
  })

  it('should serialize null date', () => {
    expect(serializeDate(null)).toBe('1969-12-31T23:59:59.999Z')
  })
})