549 lines
17 KiB
JavaScript
549 lines
17 KiB
JavaScript
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'use strict'
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const { Buffer } = require('buffer')
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const identity = (v) => v
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let db
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exports.setUp = function (test, testCommon) {
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test('setUp db', function (t) {
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db = testCommon.factory()
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db.open(t.end.bind(t))
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})
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}
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exports.args = function (test, testCommon) {
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for (const mode of ['iterator', 'keys', 'values']) {
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test(`${mode}() has db reference`, async function (t) {
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const it = db[mode]()
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// May return iterator of an underlying db, that's okay.
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t.ok(it.db === db || it.db === (db.db || db._db || db))
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await it.close()
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})
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test(`${mode}() has limit and count properties`, async function (t) {
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const iterators = [db[mode]()]
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t.is(iterators[0].limit, Infinity, 'defaults to infinite')
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for (const limit of [-1, 0, 1, Infinity]) {
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const it = db[mode]({ limit })
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iterators.push(it)
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t.is(it.limit, limit === -1 ? Infinity : limit, 'has limit property')
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}
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t.ok(iterators.every(it => it.count === 0), 'has count property')
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await Promise.all(iterators.map(it => it.close()))
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})
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test(`${mode}().nextv() yields error if size is invalid`, async function (t) {
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t.plan(4)
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const it = db[mode]()
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for (const args of [[], [NaN], ['1'], [2.5]]) {
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try {
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await it.nextv(...args)
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} catch (err) {
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t.is(err.message, "The first argument 'size' must be an integer")
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}
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}
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await it.close()
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})
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}
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}
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exports.sequence = function (test, testCommon) {
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for (const mode of ['iterator', 'keys', 'values']) {
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test(`${mode}().close() is idempotent`, function (t) {
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const iterator = db[mode]()
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iterator.close(function () {
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let async = false
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iterator.close(function () {
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t.ok(async, 'callback is asynchronous')
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t.end()
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})
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async = true
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})
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})
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for (const method of ['next', 'nextv', 'all']) {
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const requiredArgs = method === 'nextv' ? [1] : []
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test(`${mode}().${method}() after close() yields error`, function (t) {
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const iterator = db[mode]()
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iterator.close(function (err) {
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t.error(err)
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let async = false
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iterator[method](...requiredArgs, function (err2) {
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t.ok(err2, 'returned error')
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t.is(err2.code, 'LEVEL_ITERATOR_NOT_OPEN', 'correct message')
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t.ok(async, 'callback is asynchronous')
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t.end()
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})
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async = true
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})
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})
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for (const otherMethod of ['next', 'nextv', 'all']) {
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const otherRequiredArgs = otherMethod === 'nextv' ? [1] : []
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test(`${mode}().${method}() while busy with ${otherMethod}() yields error`, function (t) {
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const iterator = db[mode]()
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iterator[otherMethod](...otherRequiredArgs, function (err) {
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t.error(err)
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iterator.close(function (err) {
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t.error(err)
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t.end()
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})
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})
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let async = false
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iterator[method](...requiredArgs, function (err) {
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t.ok(err, 'returned error')
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t.is(err.code, 'LEVEL_ITERATOR_BUSY')
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t.ok(async, 'callback is asynchronous')
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})
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async = true
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})
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}
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}
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}
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for (const deferred of [false, true]) {
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for (const mode of ['iterator', 'keys', 'values']) {
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for (const method of ['next', 'nextv', 'all']) {
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const requiredArgs = method === 'nextv' ? [10] : []
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// NOTE: adapted from leveldown
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test(`${mode}().${method}() after db.close() yields error (deferred: ${deferred})`, async function (t) {
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t.plan(2)
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const db = testCommon.factory()
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if (!deferred) await db.open()
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await db.put('a', 'a')
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await db.put('b', 'b')
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const it = db[mode]()
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// The first call *should* succeed, because it was scheduled before close(). However, success
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// is not a must. Because nextv() and all() fallback to next*(), they're allowed to fail. An
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// implementation can also choose to abort any pending call on close.
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let promise = it[method](...requiredArgs).then(() => {
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t.pass('Optionally succeeded')
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}).catch((err) => {
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t.is(err.code, 'LEVEL_ITERATOR_NOT_OPEN')
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})
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// The second call *must* fail, because it was scheduled after close()
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promise = promise.then(() => {
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return it[method](...requiredArgs).then(() => {
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t.fail('Expected an error')
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}).catch((err) => {
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t.is(err.code, 'LEVEL_ITERATOR_NOT_OPEN')
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})
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})
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return Promise.all([db.close(), promise])
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})
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}
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}
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}
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}
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exports.iterator = function (test, testCommon) {
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test('test simple iterator()', function (t) {
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const data = [
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{ type: 'put', key: 'foobatch1', value: 'bar1' },
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{ type: 'put', key: 'foobatch2', value: 'bar2' },
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{ type: 'put', key: 'foobatch3', value: 'bar3' }
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]
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let idx = 0
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db.batch(data, function (err) {
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t.error(err)
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const iterator = db.iterator()
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const fn = function (err, key, value) {
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t.error(err)
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if (key && value) {
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t.is(key, data[idx].key, 'correct key')
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t.is(value, data[idx].value, 'correct value')
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db.nextTick(next)
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idx++
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} else { // end
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t.ok(err == null, 'err argument is nullish')
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t.ok(typeof key === 'undefined', 'key argument is undefined')
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t.ok(typeof value === 'undefined', 'value argument is undefined')
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t.is(idx, data.length, 'correct number of entries')
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iterator.close(function () {
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t.end()
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})
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}
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}
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const next = function () {
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iterator.next(fn)
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}
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next()
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})
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})
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// NOTE: adapted from leveldown
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test('key-only iterator', function (t) {
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const it = db.iterator({ values: false })
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it.next(function (err, key, value) {
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t.ifError(err, 'no next() error')
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t.is(key, 'foobatch1')
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t.is(value, undefined)
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it.close(t.end.bind(t))
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})
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})
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// NOTE: adapted from leveldown
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test('value-only iterator', function (t) {
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const it = db.iterator({ keys: false })
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it.next(function (err, key, value) {
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t.ifError(err, 'no next() error')
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t.is(key, undefined)
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t.is(value, 'bar1')
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it.close(t.end.bind(t))
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})
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})
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test('db.keys().next()', function (t) {
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const it = db.keys()
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it.next(function (err, key) {
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t.ifError(err, 'no next() error')
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t.is(key, 'foobatch1')
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it.close(t.end.bind(t))
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})
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})
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test('db.values().next()', function (t) {
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const it = db.values()
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it.next(function (err, value) {
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t.ifError(err, 'no next() error')
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t.is(value, 'bar1')
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it.close(t.end.bind(t))
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})
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})
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for (const mode of ['iterator', 'keys', 'values']) {
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const mapEntry = e => mode === 'iterator' ? e : mode === 'keys' ? e[0] : e[1]
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test(`${mode}().nextv()`, async function (t) {
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const it = db[mode]()
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t.same(await it.nextv(1), [['foobatch1', 'bar1']].map(mapEntry))
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t.same(await it.nextv(2, {}), [['foobatch2', 'bar2'], ['foobatch3', 'bar3']].map(mapEntry))
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t.same(await it.nextv(2), [])
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await it.close()
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})
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test(`${mode}().nextv() in reverse`, async function (t) {
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const it = db[mode]({ reverse: true })
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t.same(await it.nextv(1), [['foobatch3', 'bar3']].map(mapEntry))
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t.same(await it.nextv(2, {}), [['foobatch2', 'bar2'], ['foobatch1', 'bar1']].map(mapEntry))
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t.same(await it.nextv(2), [])
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await it.close()
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})
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test(`${mode}().nextv() has soft minimum of 1`, async function (t) {
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const it = db[mode]()
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t.same(await it.nextv(0), [['foobatch1', 'bar1']].map(mapEntry))
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t.same(await it.nextv(0), [['foobatch2', 'bar2']].map(mapEntry))
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t.same(await it.nextv(0, {}), [['foobatch3', 'bar3']].map(mapEntry))
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t.same(await it.nextv(0), [])
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await it.close()
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})
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test(`${mode}().nextv() requesting more than available`, async function (t) {
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const it = db[mode]()
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t.same(await it.nextv(10), [
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['foobatch1', 'bar1'],
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['foobatch2', 'bar2'],
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['foobatch3', 'bar3']
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].map(mapEntry))
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t.same(await it.nextv(10), [])
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await it.close()
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})
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test(`${mode}().nextv() honors limit`, async function (t) {
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const it = db[mode]({ limit: 2 })
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t.same(await it.nextv(10), [['foobatch1', 'bar1'], ['foobatch2', 'bar2']].map(mapEntry))
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t.same(await it.nextv(10), [])
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await it.close()
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})
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test(`${mode}().nextv() honors limit in reverse`, async function (t) {
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const it = db[mode]({ limit: 2, reverse: true })
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t.same(await it.nextv(10), [['foobatch3', 'bar3'], ['foobatch2', 'bar2']].map(mapEntry))
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t.same(await it.nextv(10), [])
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await it.close()
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})
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test(`${mode}().all()`, async function (t) {
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t.same(await db[mode]().all(), [
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['foobatch1', 'bar1'],
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['foobatch2', 'bar2'],
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['foobatch3', 'bar3']
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].map(mapEntry))
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t.same(await db[mode]().all({}), [
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['foobatch1', 'bar1'],
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['foobatch2', 'bar2'],
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['foobatch3', 'bar3']
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].map(mapEntry))
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})
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test(`${mode}().all() in reverse`, async function (t) {
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t.same(await db[mode]({ reverse: true }).all(), [
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['foobatch3', 'bar3'],
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['foobatch2', 'bar2'],
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['foobatch1', 'bar1']
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].map(mapEntry))
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})
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test(`${mode}().all() honors limit`, async function (t) {
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t.same(await db[mode]({ limit: 2 }).all(), [
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['foobatch1', 'bar1'],
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['foobatch2', 'bar2']
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].map(mapEntry))
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const it = db[mode]({ limit: 2 })
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t.same(await it.next(), mapEntry(['foobatch1', 'bar1']))
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t.same(await it.all(), [['foobatch2', 'bar2']].map(mapEntry))
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})
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test(`${mode}().all() honors limit in reverse`, async function (t) {
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t.same(await db[mode]({ limit: 2, reverse: true }).all(), [
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['foobatch3', 'bar3'],
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['foobatch2', 'bar2']
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].map(mapEntry))
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const it = db[mode]({ limit: 2, reverse: true })
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t.same(await it.next(), mapEntry(['foobatch3', 'bar3']))
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t.same(await it.all(), [['foobatch2', 'bar2']].map(mapEntry))
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})
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}
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// NOTE: adapted from memdown
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test('iterator() sorts lexicographically', async function (t) {
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const db = testCommon.factory()
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await db.open()
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// Write in unsorted order with multiple operations
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await db.put('f', 'F')
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await db.put('a', 'A')
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await db.put('~', '~')
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await db.put('e', 'E')
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await db.put('🐄', '🐄')
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await db.batch([
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{ type: 'put', key: 'd', value: 'D' },
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{ type: 'put', key: 'b', value: 'B' },
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{ type: 'put', key: 'ff', value: 'FF' },
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{ type: 'put', key: 'a🐄', value: 'A🐄' }
|
||
|
|
])
|
||
|
|
await db.batch([
|
||
|
|
{ type: 'put', key: '', value: 'empty' },
|
||
|
|
{ type: 'put', key: '2', value: '2' },
|
||
|
|
{ type: 'put', key: '12', value: '12' },
|
||
|
|
{ type: 'put', key: '\t', value: '\t' }
|
||
|
|
])
|
||
|
|
|
||
|
|
t.same(await db.iterator().all(), [
|
||
|
|
['', 'empty'],
|
||
|
|
['\t', '\t'],
|
||
|
|
['12', '12'],
|
||
|
|
['2', '2'],
|
||
|
|
['a', 'A'],
|
||
|
|
['a🐄', 'A🐄'],
|
||
|
|
['b', 'B'],
|
||
|
|
['d', 'D'],
|
||
|
|
['e', 'E'],
|
||
|
|
['f', 'F'],
|
||
|
|
['ff', 'FF'],
|
||
|
|
['~', '~'],
|
||
|
|
['🐄', '🐄']
|
||
|
|
])
|
||
|
|
|
||
|
|
t.same(await db.iterator({ lte: '' }).all(), [
|
||
|
|
['', 'empty']
|
||
|
|
])
|
||
|
|
|
||
|
|
return db.close()
|
||
|
|
})
|
||
|
|
|
||
|
|
for (const keyEncoding of ['buffer', 'view']) {
|
||
|
|
if (!testCommon.supports.encodings[keyEncoding]) continue
|
||
|
|
|
||
|
|
test(`test iterator() has byte order (${keyEncoding} encoding)`, function (t) {
|
||
|
|
const db = testCommon.factory({ keyEncoding })
|
||
|
|
|
||
|
|
db.open(function (err) {
|
||
|
|
t.ifError(err, 'no open() error')
|
||
|
|
|
||
|
|
const ctor = keyEncoding === 'buffer' ? Buffer : Uint8Array
|
||
|
|
const keys = [2, 11, 1].map(b => ctor.from([b]))
|
||
|
|
|
||
|
|
db.batch(keys.map((key) => ({ type: 'put', key, value: 'x' })), function (err) {
|
||
|
|
t.ifError(err, 'no batch() error')
|
||
|
|
|
||
|
|
db.keys().all(function (err, keys) {
|
||
|
|
t.ifError(err, 'no all() error')
|
||
|
|
t.same(keys.map(k => k[0]), [1, 2, 11], 'order is ok')
|
||
|
|
|
||
|
|
db.iterator().all(function (err, entries) {
|
||
|
|
t.ifError(err, 'no all() error')
|
||
|
|
t.same(entries.map(e => e[0][0]), [1, 2, 11], 'order is ok')
|
||
|
|
|
||
|
|
db.close(t.end.bind(t))
|
||
|
|
})
|
||
|
|
})
|
||
|
|
})
|
||
|
|
})
|
||
|
|
})
|
||
|
|
|
||
|
|
// NOTE: adapted from memdown and level-js
|
||
|
|
test(`test iterator() with byte range (${keyEncoding} encoding)`, async function (t) {
|
||
|
|
const db = testCommon.factory({ keyEncoding })
|
||
|
|
await db.open()
|
||
|
|
|
||
|
|
await db.put(Uint8Array.from([0x0]), '0')
|
||
|
|
await db.put(Uint8Array.from([128]), '128')
|
||
|
|
await db.put(Uint8Array.from([160]), '160')
|
||
|
|
await db.put(Uint8Array.from([192]), '192')
|
||
|
|
|
||
|
|
const collect = async (range) => {
|
||
|
|
const entries = await db.iterator(range).all()
|
||
|
|
t.ok(entries.every(e => e[0] instanceof Uint8Array)) // True for both encodings
|
||
|
|
t.ok(entries.every(e => e[1] === String(e[0][0])))
|
||
|
|
return entries.map(e => e[0][0])
|
||
|
|
}
|
||
|
|
|
||
|
|
t.same(await collect({ gt: Uint8Array.from([255]) }), [])
|
||
|
|
t.same(await collect({ gt: Uint8Array.from([192]) }), [])
|
||
|
|
t.same(await collect({ gt: Uint8Array.from([160]) }), [192])
|
||
|
|
t.same(await collect({ gt: Uint8Array.from([128]) }), [160, 192])
|
||
|
|
t.same(await collect({ gt: Uint8Array.from([0x0]) }), [128, 160, 192])
|
||
|
|
t.same(await collect({ gt: Uint8Array.from([]) }), [0x0, 128, 160, 192])
|
||
|
|
|
||
|
|
t.same(await collect({ lt: Uint8Array.from([255]) }), [0x0, 128, 160, 192])
|
||
|
|
t.same(await collect({ lt: Uint8Array.from([192]) }), [0x0, 128, 160])
|
||
|
|
t.same(await collect({ lt: Uint8Array.from([160]) }), [0x0, 128])
|
||
|
|
t.same(await collect({ lt: Uint8Array.from([128]) }), [0x0])
|
||
|
|
t.same(await collect({ lt: Uint8Array.from([0x0]) }), [])
|
||
|
|
t.same(await collect({ lt: Uint8Array.from([]) }), [])
|
||
|
|
|
||
|
|
t.same(await collect({ gte: Uint8Array.from([255]) }), [])
|
||
|
|
t.same(await collect({ gte: Uint8Array.from([192]) }), [192])
|
||
|
|
t.same(await collect({ gte: Uint8Array.from([160]) }), [160, 192])
|
||
|
|
t.same(await collect({ gte: Uint8Array.from([128]) }), [128, 160, 192])
|
||
|
|
t.same(await collect({ gte: Uint8Array.from([0x0]) }), [0x0, 128, 160, 192])
|
||
|
|
t.same(await collect({ gte: Uint8Array.from([]) }), [0x0, 128, 160, 192])
|
||
|
|
|
||
|
|
t.same(await collect({ lte: Uint8Array.from([255]) }), [0x0, 128, 160, 192])
|
||
|
|
t.same(await collect({ lte: Uint8Array.from([192]) }), [0x0, 128, 160, 192])
|
||
|
|
t.same(await collect({ lte: Uint8Array.from([160]) }), [0x0, 128, 160])
|
||
|
|
t.same(await collect({ lte: Uint8Array.from([128]) }), [0x0, 128])
|
||
|
|
t.same(await collect({ lte: Uint8Array.from([0x0]) }), [0x0])
|
||
|
|
t.same(await collect({ lte: Uint8Array.from([]) }), [])
|
||
|
|
|
||
|
|
return db.close()
|
||
|
|
})
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
exports.decode = function (test, testCommon) {
|
||
|
|
for (const deferred of [false, true]) {
|
||
|
|
for (const mode of ['iterator', 'keys', 'values']) {
|
||
|
|
for (const method of ['next', 'nextv', 'all']) {
|
||
|
|
const requiredArgs = method === 'nextv' ? [1] : []
|
||
|
|
|
||
|
|
for (const encodingOption of ['keyEncoding', 'valueEncoding']) {
|
||
|
|
if (mode === 'keys' && encodingOption === 'valueEncoding') continue
|
||
|
|
if (mode === 'values' && encodingOption === 'keyEncoding') continue
|
||
|
|
|
||
|
|
// NOTE: adapted from encoding-down
|
||
|
|
test(`${mode}().${method}() catches decoding error from ${encodingOption} (deferred: ${deferred})`, async function (t) {
|
||
|
|
t.plan(4)
|
||
|
|
|
||
|
|
const encoding = {
|
||
|
|
format: 'utf8',
|
||
|
|
decode: function (x) {
|
||
|
|
t.is(x, encodingOption === 'keyEncoding' ? 'testKey' : 'testValue')
|
||
|
|
throw new Error('from encoding')
|
||
|
|
},
|
||
|
|
encode: identity
|
||
|
|
}
|
||
|
|
|
||
|
|
const db = testCommon.factory()
|
||
|
|
await db.put('testKey', 'testValue')
|
||
|
|
|
||
|
|
if (deferred) {
|
||
|
|
await db.close()
|
||
|
|
db.open(t.ifError.bind(t))
|
||
|
|
} else {
|
||
|
|
t.pass('non-deferred')
|
||
|
|
}
|
||
|
|
|
||
|
|
const it = db[mode]({ [encodingOption]: encoding })
|
||
|
|
|
||
|
|
try {
|
||
|
|
await it[method](...requiredArgs)
|
||
|
|
} catch (err) {
|
||
|
|
t.is(err.code, 'LEVEL_DECODE_ERROR')
|
||
|
|
t.is(err.cause && err.cause.message, 'from encoding')
|
||
|
|
}
|
||
|
|
|
||
|
|
return db.close()
|
||
|
|
})
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
exports.tearDown = function (test, testCommon) {
|
||
|
|
test('tearDown', function (t) {
|
||
|
|
db.close(t.end.bind(t))
|
||
|
|
})
|
||
|
|
}
|
||
|
|
|
||
|
|
exports.all = function (test, testCommon) {
|
||
|
|
exports.setUp(test, testCommon)
|
||
|
|
exports.args(test, testCommon)
|
||
|
|
exports.sequence(test, testCommon)
|
||
|
|
exports.iterator(test, testCommon)
|
||
|
|
exports.decode(test, testCommon)
|
||
|
|
exports.tearDown(test, testCommon)
|
||
|
|
}
|