var Filer = require('../..'); var IndexedDBTestProvider = require('./indexeddb.js'); var WebSQLTestProvider = require('./websql.js'); var MemoryTestProvider = require('./memory.js'); var Url = require('url'); var _provider; var _fs; function uniqueName() { if(!uniqueName.seed) { uniqueName.seed = Date.now(); } return 'filer-testdb-' + uniqueName.seed++; } function findBestProvider() { var providers = Filer.FileSystem.providers; if(providers.IndexedDB.isSupported()) { return IndexedDBTestProvider; } if(providers.WebSQL.isSupported()) { return WebSQLTestProvider; } return MemoryTestProvider; } function getUrlParams() { // Check if we are running in node if(!global.location) { return null; } var url = Url.parse(global.location.href, true); return url.query; } function getProviderType() { var defaultProvider = 'Memory'; var queryString = getUrlParams(); // If the environment is node or the query string is empty, // the memory provider will be used. if(!queryString) { return defaultProvider; } return queryString['filer-provider'] || defaultProvider; } function setup(callback) { // In browser we support specifying the provider via the query string // (e.g., ?filer-provider=IndexedDB). If not specified, we use // the Memory provider by default. var providerType = getProviderType(); var name = uniqueName(); switch(providerType.toLowerCase()) { case 'indexeddb': _provider = new IndexedDBTestProvider(name); break; case 'websql': _provider = new WebSQLTestProvider(name); break; case 'memory': /* falls through */ default: var BestProvider = findBestProvider(); _provider = new BestProvider(name); break; } // Allow passing FS flags on query string var flags = global.filerArgs && global.filerArgs.flags ? global.filerArgs.flags : 'FORMAT'; // Create a file system and wait for it to get setup _provider.init(); function complete(err, fs) { if(err) throw err; _fs = fs; callback(); } return new Filer.FileSystem({ name: name, provider: _provider.provider, flags: flags }, complete); } function fs() { if(!_fs) { throw "TestUtil: call setup() before fs()"; } return _fs; } function provider() { if(!_provider) { throw "TestUtil: call setup() before provider()"; } return _provider; } function shell(options) { var _fs = fs(); return new _fs.Shell(options); } function cleanup(callback) { if(!_provider) { return; } _provider.cleanup(function() { _provider = null; _fs = null; callback(); }); } function typedArrayEqual(a, b) { if(!(a && b)) { return false; } if(a.length !== b.length) { return false; } for(var i = 0; i < a.length; ++ i) { if(a[i] !== b[i]) { return false; } } return true; } module.exports = { uniqueName: uniqueName, setup: setup, fs: fs, shell: shell, provider: provider, providers: { IndexedDB: IndexedDBTestProvider, WebSQL: WebSQLTestProvider, Memory: MemoryTestProvider }, cleanup: cleanup, typedArrayEqual: typedArrayEqual };