SIL.CoreImpl.PalasoWritingSystemManager.CheckForNewerGlobalWritingSystems C# (CSharp) Method

		public IEnumerable<IWritingSystem> CheckForNewerGlobalWritingSystems()
		{
			lock (m_syncRoot)
			{
				if (m_globalStore != null)
				{
					var results = new List<IWritingSystem>();
					foreach (WritingSystemDefinition wsDef in m_localStore.WritingSystemsNewerIn(m_globalStore.AllWritingSystems))
					{
						m_localStore.LastChecked(wsDef.Id, wsDef.DateModified);
						results.Add((IWritingSystem)wsDef); // REVIEW Hasso 2013.12: add only if not equal?
					}
					return results;
				}
			}
			return Enumerable.Empty<IWritingSystem>();
		}

        public void GlobalStore_WritingSystemsToIgnore()
        {
            string storePath1      = PrepareTempStore("Store1");
            string storePath2      = PrepareTempStore("Store2");
            string globalStorePath = PrepareTempStore("GlobalStore");

            var globalStore = new GlobalFileWritingSystemStore(globalStorePath);
            var wsManager   = new PalasoWritingSystemManager(
                new LocalFileWritingSystemStore(storePath1, globalStore), globalStore);
            var ws = wsManager.Set("en-US");

            ws.SpellCheckingId = "id1";
            wsManager.Save();

            Thread.Sleep(1000);

            wsManager = new PalasoWritingSystemManager(
                new LocalFileWritingSystemStore(storePath2, globalStore), globalStore);
            ws = wsManager.Set("en-US");
            ws.SpellCheckingId = "id2";
            wsManager.Save();

            wsManager = new PalasoWritingSystemManager(
                new LocalFileWritingSystemStore(storePath1, globalStore), globalStore);
            IEnumerable <IWritingSystem> sharedWss = wsManager.CheckForNewerGlobalWritingSystems();

            Assert.AreEqual(1, sharedWss.Count());
            Assert.AreEqual("en-US", sharedWss.First().Id);
            ws = wsManager.Get("en-US");
            Assert.AreEqual("id1", ws.SpellCheckingId);
            wsManager.Save();

            wsManager = new PalasoWritingSystemManager(
                new LocalFileWritingSystemStore(storePath1, globalStore), globalStore);
            sharedWss = wsManager.CheckForNewerGlobalWritingSystems();
            Assert.AreEqual(0, sharedWss.Count());
            wsManager.Save();

            Thread.Sleep(1000);

            wsManager = new PalasoWritingSystemManager(
                new LocalFileWritingSystemStore(storePath2, globalStore), globalStore);
            ws = wsManager.Get("en-US");
            ws.LegacyMapping = "encoding converter";
            wsManager.Save();

            wsManager = new PalasoWritingSystemManager(
                new LocalFileWritingSystemStore(storePath1, globalStore), globalStore);
            ws = wsManager.Get("en-US");
            Assert.IsNullOrEmpty(ws.LegacyMapping);
            sharedWss = wsManager.CheckForNewerGlobalWritingSystems();
            Assert.AreEqual(1, sharedWss.Count());
            IWritingSystem sharedWs = sharedWss.First();

            Assert.AreEqual("en-US", sharedWs.Id);
            wsManager.Replace(sharedWs);
            wsManager.Save();
            ws = wsManager.Get("en-US");
            Assert.AreEqual("encoding converter", ws.LegacyMapping);
        }