hyperdb-storage/test.js

Use a hyperdb as a storage backend for Dat, or any other hyper*-structure (eg. hypercore, hyperdrive, hypertrie).

const test = require('tape')
const hypercore = require('hypercore')
const hyperdb = require('hyperdb')
const ram = require('random-access-memory')

const storage = require('./')

test('can put & get in a hyperdb stored inside a hyperdb', t => {
  const db = hyperdb(ram)
  const nestedDb = hyperdb(storage(db, 'nested'), { valueEncoding: 'json' })
  nestedDb.put('/some/key', { some: 'value' }, err => {
    t.error(err, 'put works')
    nestedDb.get('some/key', (err, nodes) => {
      t.error(err, 'get works')
      t.deepEqual(nodes[0].value, { some: 'value' })
      t.end()
    })
  })
})

test('works with firstNode conflict resolution', t => {
  const db = hyperdb(ram)
  const nestedDb = hyperdb(storage(db, 'nested'), {
    valueEncoding: 'json',
    firstNode: true,
  })
  nestedDb.put('/some/key', { some: 'value' }, err => {
    t.error(err, 'put works')
    nestedDb.get('some/key', (err, node) => {
      t.error(err, 'get works')
      t.deepEqual(node.value, { some: 'value' })
      t.end()
    })
  })
})

test('storage overrides work', t => {
  const db = hyperdb(ram)
  const stores = {}
  const testStorage = file => {
    const storage = ram()
    stores[file] = storage
    return storage
  }
  const nestedDb = hyperdb(
    storage(db, 'nested', {
      key: testStorage,
      secret_key: testStorage,
    }),
    { valueEncoding: 'json' }
  )
  nestedDb.on('ready', () => {
    t.true('source/key' in stores, 'key uses storage override')
    t.true('source/secret_key' in stores, 'secret_key uses storage override')
    t.end()
  })
})