sparse-test.js

var tape = require('tape')
var ram = require('random-access-memory')
var hyperdrive = require('..')

tape('sparse read/write 1, passes', function (t) {
  var archive = hyperdrive(ram)
  archive.on('ready', function () {
    var clone = hyperdrive(ram, archive.key, {sparse: true})
    archive.writeFile('/hello.txt', 'world', function (err) {
      t.error(err, 'no error')
      archive.writeFile('/hello2.txt', 'world', function (err) {
        t.error(err, 'no error')
        var stream = clone.replicate()
        stream.pipe(archive.replicate()).pipe(stream)
        clone.metadata.update(checkFiles)
      })
    })

    function checkFiles () {
      clone.stat('/hello.txt', function (err, stat) {
        t.error(err, 'no error')
        t.ok(stat, 'has stat')
        clone.readFile('/hello.txt', function (err, data) {
          t.error(err, 'no error')
          t.same(data.toString(), 'world', 'data ok')
          clone.stat('/hello2.txt', function (err, stat) {
            t.error(err, 'no error')
            t.ok(stat, 'has stat')
            clone.readFile('/hello.txt', function (err, data) {
              t.error(err, 'no error')
              t.same(data.toString(), 'world', 'data ok')
              t.end()
            })
          })
        })
      })
    }
  })
})

tape('sparse read/write 1, fails', function (t) {
  var archive = hyperdrive(ram)
  archive.on('ready', function () {
    var clone = hyperdrive(ram, archive.key, {sparse: true})
    archive.writeFile('/hello.txt', 'world', function (err) {
      t.error(err, 'no error')
      archive.writeFile('/hello2.txt', 'world', function (err) {
        t.error(err, 'no error')
        var stream = clone.replicate()
        stream.pipe(archive.replicate()).pipe(stream)
        clone.metadata.update(start)
      })
    })

    function start () {
      clone.stat('/hello.txt', function (err, stat) {
        t.error(err, 'no error')
        t.ok(stat, 'stat ok')
        clone.readFile('/hello.txt', function (err, data) {
          t.error(err, 'no error')
          t.same(data.toString(), 'world', 'data ok')
          clone.stat('/hello2.txt', function (err, stat) {
            t.error(err, 'no error')
            t.ok(stat, 'stat ok')
            clone.readFile('/hello2.txt', function (err, data) {
              t.error(err, 'no error')
              t.same(data.toString(), 'world', 'data ok')
              t.end()
            })
          })
        })
      })
    }
  })
})