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test-storage.js
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test-storage.js
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// Copyright 2011-2012 Kevin Reid under the terms of the MIT License as detailed
// in the accompanying file README.md or <http://opensource.org/licenses/MIT>.
describe("Cell", function () {
var Cell = cubes.storage.Cell;
it("whenChanged should handle interest correctly", function () {
var cell = new Cell("test1", 0);
var f = jasmine.createSpy("cell listener");
f.andReturn(true);
cell.whenChanged(f);
expect(f).not.toHaveBeenCalled();
cell.set(1);
expect(f).toHaveBeenCalledWith(1);
f.andReturn(false);
f.reset();
cell.set(2);
expect(f).toHaveBeenCalledWith(2);
f.reset();
cell.set(3);
expect(f).not.toHaveBeenCalled();
});
})
describe("Persister", function () {
"use strict";
var Blockset = cubes.Blockset;
var PersistencePool = cubes.storage.PersistencePool;
var Persister = cubes.storage.Persister;
var World = cubes.World;
// Class for testing persistence behavior
var nextSerial = 0;
function PersistenceTestObject(a, b) {
this.persistence = new Persister(this);
Object.defineProperties(this, {
serial: { enumerable: true, value: nextSerial++ },
a: {
enumerable: true,
get: function () { return a; },
set: function (v) { a = v; this.persistence.dirty(); },
},
b: {
enumerable: true,
get: function () { return b; },
set: function (v) { b = v; this.persistence.dirty(); },
}
});
}
PersistenceTestObject.prototype.toString = function () {
return "[PersistenceTestObject " + this.serial + "]";
};
PersistenceTestObject.prototype.serialize = function (subSerialize) {
var json = {
// TODO make serialization handle non-object values
a: this.a ? subSerialize(this.a) : null,
b: this.b ? subSerialize(this.b) : null
};
subSerialize.setUnserializer(json, PersistenceTestObject);
return json;
};
PersistenceTestObject.unserialize = function (json, unserialize) {
return new PersistenceTestObject(
json.a ? unserialize(json.a) : null,
json.b ? unserialize(json.b) : null);
};
Persister.types["PersistenceTestObject"] = PersistenceTestObject;
function createTestPool() {
return new PersistencePool(sessionStorage, "Persister-rename-test.");
}
var pool;
beforeEach(function () {
sessionStorage.clear();
pool = createTestPool();
});
it("should write dirty objects", function () {
var obj = new PersistenceTestObject(null, null);
var thingy = new PersistenceTestObject(null, null);
pool.persist(obj, "obj");
obj.a = thingy;
pool.flushNow();
// get a copy of the currently saved state
var obj2 = createTestPool().get("obj");
expect(obj2.a).not.toBeNull();
});
it("should preserve references to other persistent objects", function () {
var inner = new PersistenceTestObject(null, null);
var outer = new PersistenceTestObject(inner, null);
pool.persist(inner, "inner");
pool.persist(outer, "outer");
// TODO also test correct linking if an inner object is persisted after the outer is written. This doesn't matter yet, but it will.
pool.flushNow();
// new pool so that we are actually unserializing, not reobtaining the above live objects
var pool2 = createTestPool();
var inner2 = pool2.get("inner");
var outer2 = pool2.get("outer");
expect(outer2.a).toBe(inner2);
});
it("should dirty persistent containers of modified objects", function () {
var inner = new PersistenceTestObject(null, null);
var outer = new PersistenceTestObject(inner, null);
pool.persist(outer, "outer");
pool.flushNow();
expect(pool.status.get()).toBe(0);
inner.a = new PersistenceTestObject(null, null);
expect(pool.status.get()).toBe(1); // got dirtied
pool.flushNow();
// Check if dirtying wrote the changes
var pool2 = createTestPool();
var outer2 = pool2.get("outer");
expect(outer2.a.a).not.toBeNull();
// Check if *unserialized* objects have correct containment relations
expect(pool2.status.get()).toBe(0);
outer2.a.a = null;
expect(pool2.status.get()).toBe(1);
});
it("handles renaming", function () {
var obj = new PersistenceTestObject(null, null);
pool.persist(obj, "foo");
pool.flushNow();
pool.ephemeralize("foo");
pool.persist(obj, "bar");
expect(pool.get("foo")).toBe(null);
expect(pool.get("bar")).toBe(obj);
});
});