library IndexedDB1Test;
import '../../pkg/unittest/lib/unittest.dart';
import '../../pkg/unittest/lib/html_config.dart';
import 'dart:async';
import 'dart:html' as html;
import 'dart:indexed_db' as idb;
import 'dart:collection';
import 'utils.dart';

// Write and re-read Maps: simple Maps; Maps with DAGs; Maps with cycles.

const String DB_NAME = 'Test';
const String STORE_NAME = 'TEST';
const int VERSION = 1;

testReadWrite(key, value, check,
              [dbName = DB_NAME, storeName = STORE_NAME, version = VERSION]) {

  createObjectStore(e) {
    var store = e.target.result.createObjectStore(storeName);
    expect(store, isNotNull);
  }

  var db;
  // Delete any existing DBs.
  return html.window.indexedDB.deleteDatabase(dbName).then((_) {
      return html.window.indexedDB.open(dbName, version: version,
        onUpgradeNeeded: createObjectStore);
    }).then((result) {
      db = result;
      var transaction = db.transaction([storeName], 'readwrite');
      transaction.objectStore(storeName).put(value, key);

      return transaction.completed;
    }).then((db) {
      var transaction = db.transaction(storeName, 'readonly');
      return transaction.objectStore(storeName).getObject(key);
    }).then((object) {
      db.close();
      check(value, object);
    }).catchError((e) {
      if (db != null) {
        db.close();
      }
      throw e;
    });
}


main() {
  useHtmlConfiguration();

  var obj1 = {'a': 100, 'b': 's'};
  var obj2 = {'x': obj1, 'y': obj1};  // DAG.

  var obj3 = {};
  obj3['a'] = 100;
  obj3['b'] = obj3;  // Cycle.

  var obj4 = new SplayTreeMap<String, dynamic>();  // Different implementation.
  obj4['a'] = 100;
  obj4['b'] = 's';

  var cyclic_list = [1, 2, 3];
  cyclic_list[1] = cyclic_list;

  go(name, data) => test(name,
    () => testReadWrite(123, data, verifyGraph));

  test('test_verifyGraph', () {
      // Nice to know verifyGraph is working before we rely on it.
      verifyGraph(obj4, obj4);
      verifyGraph(obj1, new Map.from(obj1));
      verifyGraph(obj4, new Map.from(obj4));

      var l1 = [1,2,3];
      var l2 = [const [1, 2, 3], const [1, 2, 3]];
      verifyGraph([l1, l1], l2);
      expect(() => verifyGraph([[1, 2, 3], [1, 2, 3]], l2), throws);

      verifyGraph(cyclic_list, cyclic_list);
    });

  // Don't bother with these tests if it's unsupported.
  // Support is tested in indexeddb_1_test
  if (idb.IdbFactory.supported) {
    go('test_simple', obj1);
    go('test_DAG', obj2);
    go('test_cycle', obj3);
    go('test_simple_splay', obj4);
    go('const_array_1', const [const [1], const [2]]);
    go('const_array_dag', const [const [1], const [1]]);
    go('array_deferred_copy', [1,2,3, obj3, obj3, 6]);
    go('array_deferred_copy_2', [1,2,3, [4, 5, obj3], [obj3, 6]]);
    go('cyclic_list', cyclic_list);
  }
}