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'use strict';
const fs = require('fs');
const path = require('path');
const { promisify } = require('util');
const rimraf = promisify(require('rimraf'));
const tap = require('tap');
const temp = require('temp');
process.env.DISABLE_V8_COMPILE_CACHE = 1;
const FileSystemBlobStore = require('..').__TEST__.FileSystemBlobStore;
temp.track();
let storageDirectory;
let blobStore;
tap.beforeEach(() => {
storageDirectory = temp.path('filesystemblobstore');
blobStore = new FileSystemBlobStore(storageDirectory);
});
tap.afterEach(() => {
return rimraf(storageDirectory);
});
tap.test('is empty when the file doesn\'t exist', t => {
t.equal(blobStore.isDirty(), false);
t.type(blobStore.get('foo', 'invalidation-key-1'), 'undefined');
t.type(blobStore.get('bar', 'invalidation-key-2'), 'undefined');
t.end();
});
tap.test('allows to read and write buffers from/to memory without persisting them', t => {
blobStore.set('foo', 'invalidation-key-1', Buffer.from('foo'));
blobStore.set('bar', 'invalidation-key-2', Buffer.from('bar'));
t.same(blobStore.get('foo', 'invalidation-key-1'), Buffer.from('foo'));
t.same(blobStore.get('bar', 'invalidation-key-2'), Buffer.from('bar'));
t.type(blobStore.get('foo', 'unexisting-key'), 'undefined');
t.type(blobStore.get('bar', 'unexisting-key'), 'undefined');
t.end();
});
tap.test('persists buffers when saved and retrieves them on load, giving priority to in-memory ones', t => {
blobStore.set('foo', 'invalidation-key-1', Buffer.from('foo'));
blobStore.set('bar', 'invalidation-key-2', Buffer.from('bar'));
blobStore.save();
blobStore = new FileSystemBlobStore(storageDirectory);
t.same(blobStore.get('foo', 'invalidation-key-1'), Buffer.from('foo'));
t.same(blobStore.get('bar', 'invalidation-key-2'), Buffer.from('bar'));
t.type(blobStore.get('foo', 'unexisting-key'), 'undefined');
t.type(blobStore.get('bar', 'unexisting-key'), 'undefined');
blobStore.set('foo', 'new-key', Buffer.from('changed'));
t.same(blobStore.get('foo', 'new-key'), Buffer.from('changed'));
t.type(blobStore.get('foo', 'invalidation-key-1'), 'undefined');
t.end();
});
tap.test('persists both in-memory and previously stored buffers when saved', t => {
blobStore.set('foo', 'invalidation-key-1', Buffer.from('foo'));
blobStore.set('bar', 'invalidation-key-2', Buffer.from('bar'));
blobStore.save();
blobStore = new FileSystemBlobStore(storageDirectory);
blobStore.set('bar', 'invalidation-key-3', Buffer.from('changed'));
blobStore.set('qux', 'invalidation-key-4', Buffer.from('qux'));
blobStore.save();
blobStore = new FileSystemBlobStore(storageDirectory);
t.same(blobStore.get('foo', 'invalidation-key-1'), Buffer.from('foo'));
t.same(blobStore.get('bar', 'invalidation-key-3'), Buffer.from('changed'));
t.same(blobStore.get('qux', 'invalidation-key-4'), Buffer.from('qux'));
t.type(blobStore.get('foo', 'unexisting-key'), 'undefined');
t.type(blobStore.get('bar', 'invalidation-key-2'), 'undefined');
t.type(blobStore.get('qux', 'unexisting-key'), 'undefined');
t.end();
});
tap.test('allows to delete keys from both memory and stored buffers', t => {
blobStore.set('a', 'invalidation-key-1', Buffer.from('a'));
blobStore.set('b', 'invalidation-key-2', Buffer.from('b'));
blobStore.save();
blobStore = new FileSystemBlobStore(storageDirectory);
blobStore.set('b', 'invalidation-key-3', Buffer.from('b'));
blobStore.set('c', 'invalidation-key-4', Buffer.from('c'));
blobStore.delete('b');
blobStore.delete('c');
blobStore.save();
blobStore = new FileSystemBlobStore(storageDirectory);
t.same(blobStore.get('a', 'invalidation-key-1'), Buffer.from('a'));
t.type(blobStore.get('b', 'invalidation-key-2'), 'undefined');
t.type(blobStore.get('b', 'invalidation-key-3'), 'undefined');
t.type(blobStore.get('c', 'invalidation-key-4'), 'undefined');
t.end();
});
tap.test('ignores errors when loading an invalid blob store', t => {
blobStore.set('a', 'invalidation-key-1', Buffer.from('a'));
blobStore.set('b', 'invalidation-key-2', Buffer.from('b'));
blobStore.save();
// Simulate corruption
fs.writeFileSync(path.join(storageDirectory, 'MAP'), Buffer.from([0]));
fs.writeFileSync(path.join(storageDirectory, 'BLOB'), Buffer.from([0]));
blobStore = new FileSystemBlobStore(storageDirectory);
t.type(blobStore.get('a', 'invalidation-key-1'), 'undefined');
t.type(blobStore.get('b', 'invalidation-key-2'), 'undefined');
blobStore.set('a', 'invalidation-key-1', Buffer.from('x'));
blobStore.set('b', 'invalidation-key-2', Buffer.from('y'));
blobStore.save();
blobStore = new FileSystemBlobStore(storageDirectory);
t.same(blobStore.get('a', 'invalidation-key-1'), Buffer.from('x'));
t.same(blobStore.get('b', 'invalidation-key-2'), Buffer.from('y'));
t.end();
});
tap.test('object hash collision', t => {
t.type(blobStore.get('constructor', 'invalidation-key-1'), 'undefined');
blobStore.delete('constructor');
t.type(blobStore.get('constructor', 'invalidation-key-1'), 'undefined');
blobStore.set('constructor', 'invalidation-key-1', Buffer.from('proto'));
t.same(blobStore.get('constructor', 'invalidation-key-1'), Buffer.from('proto'));
blobStore.save();
blobStore = new FileSystemBlobStore(storageDirectory);
t.same(blobStore.get('constructor', 'invalidation-key-1'), Buffer.from('proto'));
t.type(blobStore.get('hasOwnProperty', 'invalidation-key-2'), 'undefined');
t.end();
});
tap.test('dirty state (set)', t => {
blobStore.set('foo', 'invalidation-key-1', Buffer.from('foo'));
t.equal(blobStore.isDirty(), true);
blobStore.save();
blobStore = new FileSystemBlobStore(storageDirectory);
t.equal(blobStore.isDirty(), false);
blobStore.set('foo', 'invalidation-key-2', Buffer.from('bar'));
t.equal(blobStore.isDirty(), true);
t.end();
});
tap.test('dirty state (delete memory)', t => {
blobStore.delete('foo');
t.equal(blobStore.isDirty(), false);
blobStore.set('foo', 'invalidation-key-1', Buffer.from('foo'));
blobStore.delete('foo');
t.equal(blobStore.isDirty(), true);
blobStore.save();
blobStore = new FileSystemBlobStore(storageDirectory);
t.equal(blobStore.isDirty(), false);
blobStore.set('foo', 'invalidation-key-2', Buffer.from('bar'));
t.equal(blobStore.isDirty(), true);
t.end();
});
tap.test('dirty state (delete stored)', t => {
blobStore.set('foo', 'invalidation-key-1', Buffer.from('foo'));
blobStore.save();
blobStore = new FileSystemBlobStore(storageDirectory);
blobStore.delete('foo');
t.equal(blobStore.isDirty(), true);
t.end();
});
tap.test('prefix', t => {
blobStore.set('foo', 'invalidation-key-1', Buffer.from('foo'));
blobStore.save();
t.ok(fs.existsSync(path.join(storageDirectory, 'MAP')));
t.ok(fs.existsSync(path.join(storageDirectory, 'BLOB')));
storageDirectory = temp.path('filesystemblobstore');
blobStore = new FileSystemBlobStore(storageDirectory, 'prefix');
blobStore.set('foo', 'invalidation-key-1', Buffer.from('foo'));
blobStore.save();
t.ok(fs.existsSync(path.join(storageDirectory, 'prefix.MAP')));
t.ok(fs.existsSync(path.join(storageDirectory, 'prefix.BLOB')));
t.end();
});
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