public void NonContiguousProxyTest()
        {
            // now it is like HRM
            var manager = new DynamicResourceManager("KGySoft.CoreLibraries.Resources.TestCompiledResource", GetType().Assembly, resXBaseName)
            {
                AutoSave   = AutoSaveOptions.None,
                AutoAppend = AutoAppendOptions.None
            };
            string key = "unknown";
            Dictionary <string, ResourceSet> resourceSets;
            string proxyName = "ProxyResourceSet";

            if (huRunic != null)
            {
                // preparing the chain: inv (loaded), hu (proxy), hu-Runic (created), hu-Runic-HU (proxy), hu-Runic-HU-Lowland (created)
                manager.GetExpandoResourceSet(huRunic, ResourceSetRetrieval.CreateIfNotExists);
                manager.GetExpandoResourceSet(huRunicHULowland, ResourceSetRetrieval.CreateIfNotExists);
                Assert.AreSame(manager.GetResourceSet(hu, true, true), manager.GetResourceSet(inv, false, false));          // now hu is proxy, inv is loaded
                Assert.AreSame(manager.GetResourceSet(huRunicHU, true, true), manager.GetResourceSet(huRunic, true, true)); // now huRunicHU is proxy, huRunic is already loaded

                resourceSets = (Dictionary <string, ResourceSet>)Reflector.GetField(manager, "resourceSets");
                Assert.AreEqual(5, resourceSets.Count);
                Assert.AreEqual(2, resourceSets.Count(kv => kv.Value.GetType().Name == proxyName));

                // through HRM: does not change anything
                Assert.IsNull(manager.GetString(key, huRunicHULowland));
                Assert.AreEqual(5, resourceSets.Count);
                Assert.AreEqual(2, resourceSets.Count(kv => kv.Value.GetType().Name == proxyName));

                // through DRM but without merging (adding to invariant only): does not change anything, proxies remain intact
                manager.AutoAppend = AutoAppendOptions.AddUnknownToInvariantCulture;
                Assert.IsTrue(manager.GetString(key, huRunicHULowland).StartsWith(LanguageSettings.UnknownResourcePrefix, StringComparison.Ordinal));
                Assert.AreEqual(5, resourceSets.Count);
                Assert.AreEqual(2, resourceSets.Count(kv => kv.Value.GetType().Name == proxyName));

                // huRunic is about to be merged, this already existed so proxies remain intact
                manager.AutoAppend = AutoAppendOptions.AppendFirstNeutralCulture;
                Assert.IsTrue(manager.GetString(key, huRunicHULowland).StartsWith(LanguageSettings.UntranslatedResourcePrefix + LanguageSettings.UnknownResourcePrefix, StringComparison.Ordinal));
                Assert.AreEqual(5, resourceSets.Count);
                Assert.AreEqual(2, resourceSets.Count(kv => kv.Value.GetType().Name == proxyName));

                // specifics are merged so result comes from huRunic, hu proxy remains, huRunicHU is replaced
                manager.AutoAppend = AutoAppendOptions.AppendSpecificCultures;
                Assert.IsTrue(manager.GetString(key, huRunicHULowland).StartsWith(LanguageSettings.UntranslatedResourcePrefix + LanguageSettings.UnknownResourcePrefix, StringComparison.Ordinal));
                Assert.AreEqual(5, resourceSets.Count);
                Assert.AreEqual(1, resourceSets.Count(kv => kv.Value.GetType().Name == proxyName));

                // result is coming from the completely merged huRunicHULowland so nothing changes in the base
                manager.AutoAppend = AutoAppendOptions.AppendNeutralCultures;
                Assert.IsTrue(manager.GetString(key, huRunicHULowland).StartsWith(LanguageSettings.UntranslatedResourcePrefix + LanguageSettings.UnknownResourcePrefix, StringComparison.Ordinal));
                Assert.AreEqual(5, resourceSets.Count);
                Assert.AreEqual(1, resourceSets.Count(kv => kv.Value.GetType().Name == proxyName));

                // even if the rs of the proxied hu is retrieved
                manager.GetResourceSet(hu, true, true);
                Assert.AreEqual(5, resourceSets.Count);
                Assert.AreEqual(1, resourceSets.Count(kv => kv.Value.GetType().Name == proxyName));

                // result is coming from the cached merged huRunicHULowland so nothing changes in the base even if AppendOnLoad is requested
                manager.AutoAppend |= AutoAppendOptions.AppendOnLoad;
                Assert.IsTrue(manager.GetString(key, huRunicHULowland).StartsWith(LanguageSettings.UntranslatedResourcePrefix + LanguageSettings.UnknownResourcePrefix, StringComparison.Ordinal));
                Assert.AreEqual(5, resourceSets.Count);
                Assert.AreEqual(1, resourceSets.Count(kv => kv.Value.GetType().Name == proxyName));

                // even if the rs of the proxied hu is retrieved with Load only (EnsureMerged is executed but no create occurs so the proxied inv will be returned)
                var rsinv = manager.GetResourceSet(hu, true, true);
                Assert.AreEqual(5, resourceSets.Count);
                Assert.AreEqual(1, resourceSets.Count(kv => kv.Value.GetType().Name == proxyName));
                Assert.AreSame(manager.GetResourceSet(inv, false, false), rsinv);

                // but for Create it is loaded and immediately merged, too
                var rshu = manager.GetExpandoResourceSet(hu, ResourceSetRetrieval.CreateIfNotExists, true);
                Assert.AreEqual(5, resourceSets.Count);
                Assert.AreEqual(0, resourceSets.Count(kv => kv.Value.GetType().Name == proxyName));
                Assert.AreNotSame(rsinv, rshu);
                Assert.IsTrue(rshu.ContainsResource(key));
                return;
            }

            // ---basic tests: no admin rights or not .NET Framework---

            // preparing the chain: inv (loaded), hu (proxy), hu-HU (created)
            manager.GetExpandoResourceSet(huHU, ResourceSetRetrieval.CreateIfNotExists);
            Assert.AreSame(manager.GetResourceSet(hu, true, true), manager.GetResourceSet(inv, false, false)); // now hu is proxy, inv is loaded

            resourceSets = (Dictionary <string, ResourceSet>)Reflector.GetField(manager, "resourceSets");
            Assert.AreEqual(3, resourceSets.Count);
            Assert.AreEqual(1, resourceSets.Count(kv => kv.Value.GetType().Name == proxyName));

            // through HRM: does not change anything
            Assert.IsNull(manager.GetString(key, huHU));
            Assert.AreEqual(3, resourceSets.Count);
            Assert.AreEqual(1, resourceSets.Count(kv => kv.Value.GetType().Name == proxyName));

            // through DRM but without merging (adding to invariant only): does not change anything, the proxy remains intact
            manager.AutoAppend = AutoAppendOptions.AddUnknownToInvariantCulture;
            Assert.IsTrue(manager.GetString(key, huHU).StartsWith(LanguageSettings.UnknownResourcePrefix, StringComparison.Ordinal));
            Assert.AreEqual(3, resourceSets.Count);
            Assert.AreEqual(1, resourceSets.Count(kv => kv.Value.GetType().Name == proxyName));

            // specific is merged again, so nothing changes
            manager.RemoveObject(key, huHU);
            manager.AutoAppend = AutoAppendOptions.AppendSpecificCultures;
            Assert.IsTrue(manager.GetString(key, huHU).StartsWith(LanguageSettings.UntranslatedResourcePrefix + LanguageSettings.UnknownResourcePrefix, StringComparison.Ordinal));
            Assert.AreEqual(3, resourceSets.Count);
            Assert.AreEqual(1, resourceSets.Count(kv => kv.Value.GetType().Name == proxyName));

            // neutral is merged so it will be replaced now
            manager.RemoveObject(key, huHU);
            manager.AutoAppend = AutoAppendOptions.AppendNeutralCultures;
            Assert.IsTrue(manager.GetString(key, hu).StartsWith(LanguageSettings.UntranslatedResourcePrefix + LanguageSettings.UnknownResourcePrefix, StringComparison.Ordinal));
            Assert.AreEqual(3, resourceSets.Count);
            Assert.AreEqual(0, resourceSets.Count(kv => kv.Value.GetType().Name == proxyName));

#if NETFRAMEWORK
            Assert.Inconclusive("To run the tests in this class with full functionality, administrator rights are required");
#endif
        }
        public void AutoSaveTest()
        {
            LanguageSettings.DynamicResourceManagersAutoAppend = AutoAppendOptions.None;
            string key     = "testKey";
            string value   = "test value";
            var    manager = new DynamicResourceManager("KGySoft.CoreLibraries.Resources.TestCompiledResource", GetType().Assembly, resXBaseName)
            {
                AutoAppend = AutoAppendOptions.None,
            };
            CultureInfo testCulture = hu;

            void Cleanup()
            {
                //foreach (CultureInfo culture in cultures)
                File.Delete(Path.Combine(Path.Combine(Files.GetExecutingPath(), manager.ResXResourcesDir), $"{resXBaseName}.{testCulture.Name}.resx"));
            }

            try
            {
                // SourceChange, individual
                Cleanup();
                manager.Source = ResourceManagerSources.CompiledAndResX;
                manager.UseLanguageSettings = false;
                manager.AutoSave            = AutoSaveOptions.SourceChange;

                manager.SetObject(key, value, testCulture);
                manager.Source = ResourceManagerSources.ResXOnly;                   // save occurs
                manager.ReleaseAllResources();
                Assert.IsNull(manager.GetResourceSet(testCulture, false, false));   // not loaded after release
                Assert.IsNotNull(manager.GetResourceSet(testCulture, true, false)); // but can be loaded from saved

                // SourceChange, central
                Cleanup();
                manager.ReleaseAllResources();
                LanguageSettings.DynamicResourceManagersSource = ResourceManagerSources.CompiledAndResX;
                manager.UseLanguageSettings = true;
                LanguageSettings.DynamicResourceManagersAutoSave = AutoSaveOptions.SourceChange;

                manager.SetObject(key, value, testCulture);
                LanguageSettings.DynamicResourceManagersSource = ResourceManagerSources.ResXOnly; // save occurs
                manager.ReleaseAllResources();
                Assert.IsNull(manager.GetResourceSet(testCulture, false, false));                 // not loaded after release
                Assert.IsNotNull(manager.GetResourceSet(testCulture, true, false));               // but can be loaded from saved

                // LanguageChange, individual
                Cleanup();
                manager.ReleaseAllResources();
                manager.UseLanguageSettings      = false;
                LanguageSettings.DisplayLanguage = testCulture;
                manager.AutoSave = AutoSaveOptions.LanguageChange;

                manager.SetObject(key, value);                                      // null: uses DisplayLanguage, which is the same as CurrentUICulture
                LanguageSettings.DisplayLanguage = inv;                             // save occurs
                manager.ReleaseAllResources();
                Assert.IsNull(manager.GetResourceSet(testCulture, false, false));   // not loaded after release
                Assert.IsNotNull(manager.GetResourceSet(testCulture, true, false)); // but can be loaded from saved

                // LanguageChange, central
                Cleanup();
                manager.ReleaseAllResources();
                manager.UseLanguageSettings      = true;
                LanguageSettings.DisplayLanguage = testCulture;
                LanguageSettings.DynamicResourceManagersAutoSave = AutoSaveOptions.LanguageChange;

                manager.SetObject(key, value);                                      // null: uses DisplayLanguage, which is the same as CurrentUICulture
                LanguageSettings.DisplayLanguage = inv;                             // save occurs
                manager.ReleaseAllResources();
                Assert.IsNull(manager.GetResourceSet(testCulture, false, false));   // not loaded after release
                Assert.IsNotNull(manager.GetResourceSet(testCulture, true, false)); // but can be loaded from saved

#if !(NETCOREAPP2_0 || NETCOREAPP3_0)
                // DomainUnload, individual
                Cleanup();
                manager.ReleaseAllResources();
                Evidence     evidence      = new Evidence(AppDomain.CurrentDomain.Evidence);
                AppDomain    sandboxDomain = AppDomain.CreateDomain("SandboxDomain", evidence, AppDomain.CurrentDomain.BaseDirectory, null, false);
                AssemblyName selfName      = Assembly.GetExecutingAssembly().GetName();
                sandboxDomain.Load(selfName);

                RemoteDrmConsumer remote = (RemoteDrmConsumer)sandboxDomain.CreateInstanceAndUnwrap(selfName.FullName, typeof(RemoteDrmConsumer).FullName);
                remote.UseDrmRemotely(false, testCulture);
                AppDomain.Unload(sandboxDomain);
                Assert.IsNotNull(manager.GetResourceSet(testCulture, true, false)); // can be loaded that has been saved in another domain

                // DomainUnload, central
                Cleanup();
                manager.ReleaseAllResources();
                evidence      = new Evidence(AppDomain.CurrentDomain.Evidence);
                sandboxDomain = AppDomain.CreateDomain("SandboxDomain", evidence, AppDomain.CurrentDomain.BaseDirectory, null, false);
                selfName      = Assembly.GetExecutingAssembly().GetName();
                sandboxDomain.Load(selfName);

                remote = (RemoteDrmConsumer)sandboxDomain.CreateInstanceAndUnwrap(selfName.FullName, typeof(RemoteDrmConsumer).FullName);
                remote.UseDrmRemotely(true, testCulture);
                AppDomain.Unload(sandboxDomain);
                Assert.IsNotNull(manager.GetResourceSet(testCulture, true, false)); // can be loaded that has been saved in another domain
#endif

                // Dispose, individual
                Cleanup();
                manager.UseLanguageSettings = false;
                manager.Source = ResourceManagerSources.CompiledAndResX;
                manager.UseLanguageSettings = false;
                manager.AutoSave            = AutoSaveOptions.Dispose;

                manager.SetObject(key, value, testCulture);
                manager.Dispose(); // save occurs
                Throws <ObjectDisposedException>(() => manager.GetResourceSet(testCulture, false, false));
                Assert.IsTrue(File.Exists(Path.Combine(Path.Combine(Files.GetExecutingPath(), manager.ResXResourcesDir), $"TestResourceResX.{testCulture.Name}.resx")));

                // Dispose, central
                LanguageSettings.DynamicResourceManagersSource   = ResourceManagerSources.CompiledAndResX;
                LanguageSettings.DynamicResourceManagersAutoSave = AutoSaveOptions.Dispose;
                manager = new DynamicResourceManager("KGySoft.CoreLibraries.Resources.TestCompiledResource", GetType().Assembly, resXBaseName)
                {
                    UseLanguageSettings = true
                };
                Cleanup();

                manager.SetObject(key, value, testCulture);
                LanguageSettings.DisplayLanguage = inv; // save occurs
                manager.Dispose();                      // save occurs
                Throws <ObjectDisposedException>(() => manager.GetResourceSet(testCulture, false, false));
                Assert.IsTrue(File.Exists(Path.Combine(Path.Combine(Files.GetExecutingPath(), manager.ResXResourcesDir), $"TestResourceResX.{testCulture.Name}.resx")));

                // final cleanup
                Cleanup();
            }
            finally
            {
                Cleanup();
            }
        }
        public void GetUnknownTest()
        {
            // This is a non-existing resource so MissingManifestResourceException should be thrown by default
            var manager = new DynamicResourceManager(GetType())
            {
                AutoSave       = AutoSaveOptions.None,
                AutoAppend     = AutoAppendOptions.AppendNeutralCultures,
                ThrowException = true
            };

            string key = "unknown";

            // Exception is thrown through base HRM
            Throws <MissingManifestResourceException>(() => manager.GetString(key, inv));

            // Due to possible append options, exception is thrown through derived DRM
            // For the neutral en culture a resource set is created during the traversal
            Throws <MissingManifestResourceException>(() => manager.GetString(key, enUS));
            Assert.IsNull(manager.GetResourceSet(enUS, false, false));
            Assert.IsNotNull(manager.GetResourceSet(en, false, false));

            // Exception is not thrown any more. Instead, a new resource is automatically added
            manager.AutoAppend = AutoAppendOptions.AddUnknownToInvariantCulture;
            manager.ReleaseAllResources();

            Assert.IsTrue(manager.GetString(key, inv).StartsWith(LanguageSettings.UnknownResourcePrefix, StringComparison.Ordinal));
            Assert.IsTrue(manager.GetString(key, en).StartsWith(LanguageSettings.UnknownResourcePrefix, StringComparison.Ordinal));
            Assert.IsTrue(manager.GetString(key, enUS).StartsWith(LanguageSettings.UnknownResourcePrefix, StringComparison.Ordinal));
            manager.ReleaseAllResources();
            Assert.IsTrue(manager.GetString(key, enUS).StartsWith(LanguageSettings.UnknownResourcePrefix, StringComparison.Ordinal));

            // If requested as derived with append, the new resource is merged into derived resources
            manager.AutoAppend = AutoAppendOptions.AddUnknownToInvariantCulture | AutoAppendOptions.AppendNeutralCultures;
            manager.ReleaseAllResources();
            Assert.IsTrue(manager.GetString(key, enUS).StartsWith(LanguageSettings.UntranslatedResourcePrefix + LanguageSettings.UnknownResourcePrefix, StringComparison.Ordinal));
            IExpandoResourceSet rsEn = manager.GetExpandoResourceSet(en, ResourceSetRetrieval.GetIfAlreadyLoaded, false);

            Assert.IsTrue(rsEn.ContainsResource(key));
            Assert.AreSame(rsEn, manager.GetResourceSet(enUS, false, false), "en should be proxied for en-US");
            manager.AutoAppend |= AutoAppendOptions.AppendSpecificCultures;
            Assert.IsTrue(manager.GetString(key, enUS).StartsWith(LanguageSettings.UntranslatedResourcePrefix + LanguageSettings.UnknownResourcePrefix, StringComparison.Ordinal));
            IExpandoResourceSet rsEnUs = manager.GetResourceSet(enUS, false, false) as IExpandoResourceSet;

            Assert.IsNotNull(rsEnUs);
            Assert.AreNotSame(rsEn, rsEnUs, "Due to merge a new resource set should have been created for en-US");
            Assert.IsTrue(rsEnUs.ContainsResource(key));

            // As object: null is added to invariant
            manager.ReleaseAllResources();
            Assert.IsNull(manager.GetObject(key, inv));
            manager.GetExpandoResourceSet(inv, ResourceSetRetrieval.GetIfAlreadyLoaded, false).ContainsResource(key);

            // but null is not merged even if the child resource sets are created
            Assert.IsNull(manager.GetObject(key, enUS));
            Assert.IsNotNull(manager.GetResourceSet(enUS, false, false));
            Assert.IsFalse(manager.GetExpandoResourceSet(enUS, ResourceSetRetrieval.GetIfAlreadyLoaded, false).ContainsResource(key));
            Assert.IsNotNull(manager.GetResourceSet(en, false, false));
            Assert.IsFalse(manager.GetExpandoResourceSet(en, ResourceSetRetrieval.GetIfAlreadyLoaded, false).ContainsResource(key));
            Assert.IsNotNull(manager.GetResourceSet(inv, false, false));
            Assert.IsTrue(manager.GetExpandoResourceSet(inv, ResourceSetRetrieval.GetIfAlreadyLoaded, false).ContainsResource(key));

            // a null object does not turn to string
            Assert.IsNull(manager.GetString(key, enUS));

            // changing back to compiled only sources disables appending invariant so exception will be thrown again
            manager.Source = ResourceManagerSources.CompiledOnly;
            Throws <MissingManifestResourceException>(() => manager.GetString(key, enUS));
        }