Javascript 如何使用Linq2IndexedDB插入对象

我正在通过单元测试（via）试验Linq2IndexedDB（1.0.21版），但我甚至不能让一个简单的插入工作。发生的情况（在Google Chrome下运行时）是在Linq2IndexedDB.js的第1535行抛出一个内部异常：

未捕获类型错误：无法读取未定义的属性“版本”

我的单元测试代码如下所示；基本上有一个测试，“它可以添加对象”：

我是做错了什么，还是Linq2IndexedDB中有bug（或者两者都有）

---

我已经建立了一个相应的测试项目，并完成了配置，因此您可以轻松地运行包含的测试。Karma配置假定您安装了Chrome。

我发现了几个问题：

我获取的LinqIndexedDB工作程序位置错误，应该是：

'/base/lib/linqIndexedDB.js'

使用线外关键点插入对象不起作用

我最终在IE 10和Chrome上完成了插入工作，尽管我仍在与PhantomJS作斗争。为了让它在Chrome下工作，我必须显式地指定我的模式，我怀疑这是由于Linq2IndexedDB中的一个bug造成的。我的工作方案如下：

测试： 实施： 编辑： 它不能在PhantomJS下工作的原因是我在Linq2IndexedDB中启用了调试日志记录，出于某种原因，这似乎会在某个时候阻塞Karma的管道。关闭调试日志记录后，所有配置都可以工作

"use strict";

define(["db", "linq2indexeddb", "chai", "underscore", "stacktrace"], function (db, linq2indexeddb, chai, _,
    printStacktrace) {
    var should = chai.should();

    describe("db", function () {
        var _db;

        function fail(done, reason, err) {
            if (typeof reason === "string") {
                reason = new Error(reason);
            }
            if (!reason) {
                console.log(typeof done, typeof reason);
                reason = new Error("There's been an error, but no reason was supplied!");
                var st = printStacktrace({e: reason});
                console.log(st);
            }
            if (typeof done !== "function") {
                throw new Error("Was not supplied a function for 'done'!");
            }
            done(reason);
        }

        // Bind done as the first argument to the fail function
        function bindFail(done, reason) {
            if (typeof done !== "function") {
                throw new Error("done must be a function");
            }
            return _.partial(fail, done, reason);
        }

        beforeEach(function (done) {
            _db = linq2indexeddb("test", null, true);
            _db.deleteDatabase()
            .done(function () {
                _db.initialize()
                .done(done)
                .fail(bindFail(done, "Initializing database failed"));
            })
            .fail(bindFail(done, "Deleting database failed"));
        });

        it("can add objects", function (done) {
            console.log("Starting test");
            var refObj = {"key": "value"};
            _db.linq.from("store").insert(refObj, "Key")
            .done(function () {
                console.log("Added object successfully");
                done();
            })
            .fail(bindFail(done, "Inserting object failed"));
        });
    });
});

"use strict";

define(["db", "linq2indexeddb", "chai", "underscore", "stacktrace"], function (db, linq2indexeddb, chai, _,
    printStacktrace) {
    var should = chai.should();

    describe("db", function () {
        var _db;

        function fail(done, reason, err) {
            console.log("err:", err);
            if (typeof reason === "string") {
                reason = new Error(reason);
            }
            if (!reason) {
                console.log(typeof done, typeof reason);
                reason = new Error("There's been an error, but no reason was supplied!");
                var st = printStacktrace({e: reason});
                console.log(st);
            }
            if (typeof done !== "function") {
                throw new Error("Was not supplied a function for 'done'!");
            }
            done(reason);
        }

        // Bind done as the first argument to the fail function
        function bindFail(done, reason) {
            if (typeof done !== "function") {
                throw new Error("done must be a function");
            }
            return _.partial(fail, done, reason);
        }

        beforeEach(function (done) {
            // Linq2IndexedDB's web worker needs this URL
            linq2indexeddb.prototype.utilities.linq2indexedDBWorkerFileLocation = '/base/lib/Linq2IndexedDB.js'

            _db = new db.Database("test");

            console.log("Deleting database");
            _db.deleteDatabase()
            .done(function () {
                console.log("Initializing database");
                _db.initialize()
                .done(done)
                .fail(bindFail(done, "Initializing database failed"));
            })
            .fail(bindFail(done, "Deleting database failed"));
        });

        it("can add objects", function (done) {
            console.log("Starting test");
            var refObj = {"key": "value"};
            _db.insert(refObj)
            .done(function () {
                done();
            })
            .fail(bindFail(done, "Database insertion failed"));
        });
    });
});

define("db", ["linq2indexeddb"], function (linq2indexeddb) {
    function getDatabaseConfiguration() {
        var dbConfig = {
            version: 1
        };
        // NOTE: definition is an array of schemas, keyed by version;
        // this allows linq2indexedDb to do auto-schema-migrations, based upon the current dbConfig.version
        dbConfig.definition = [{
            version: 1,
            objectStores: [
            { name: "store", objectStoreOptions: { keyPath: 'key' } },
            ],
            defaultData: []
        },
        ];

        return dbConfig;
    }

    var module = {
        Database: function (name) {
            var self = this;

            self._db = linq2indexeddb(name, getDatabaseConfiguration());

            self.deleteDatabase = function () {
                return self._db.deleteDatabase();
            };

            self.initialize = function () {
                return self._db.initialize();
            };

            self.insert = function (data) {
                return self._db.linq.from("store").insert(data);
            };
        }
    };
    return module;
});