public void ShouldInvokeRetrieverForModules()
{
var loader = new MockModuleInitializer();
var moduleInfo = CreateModuleInfo("needsRetrieval", InitializationMode.WhenAvailable);
var catalog = new MockModuleCatalog { Modules = { moduleInfo } };
ModuleManager manager = new ModuleManager(loader, catalog, new MockLogger());
var moduleTypeLoader = new MockModuleTypeLoader();
manager.ModuleTypeLoaders = new List<IModuleTypeLoader> { moduleTypeLoader };
manager.Run();
Assert.IsTrue(moduleTypeLoader.LoadedModules.Contains(moduleInfo));
}
public void ShouldInitializeModulesOnRetrievalCompleted()
{
var loader = new MockModuleInitializer();
var backgroungModuleInfo = CreateModuleInfo("NeedsRetrieval", InitializationMode.WhenAvailable);
var catalog = new MockModuleCatalog { Modules = { backgroungModuleInfo } };
ModuleManager manager = new ModuleManager(loader, catalog, new MockLogger());
var moduleTypeLoader = new MockModuleTypeLoader();
manager.ModuleTypeLoaders = new List<IModuleTypeLoader> { moduleTypeLoader };
Assert.IsFalse(loader.InitializeCalled);
manager.Run();
Assert.IsTrue(loader.InitializeCalled);
Assert.AreEqual(1, loader.InitializedModules.Count);
Assert.AreEqual(backgroungModuleInfo, loader.InitializedModules[0]);
}
public void ShouldInitializeModuleOnDemand()
{
var loader = new MockModuleInitializer();
var onDemandModule = CreateModuleInfo("NeedsRetrieval", InitializationMode.OnDemand);
var catalog = new MockModuleCatalog { Modules = { onDemandModule } };
ModuleManager manager = new ModuleManager(loader, catalog, new MockLogger());
var moduleRetriever = new MockModuleTypeLoader();
manager.ModuleTypeLoaders = new List<IModuleTypeLoader> { moduleRetriever };
manager.Run();
Assert.IsFalse(loader.InitializeCalled);
Assert.AreEqual(0, moduleRetriever.LoadedModules.Count);
manager.LoadModule("NeedsRetrieval");
Assert.AreEqual(1, moduleRetriever.LoadedModules.Count);
Assert.IsTrue(loader.InitializeCalled);
Assert.AreEqual(1, loader.InitializedModules.Count);
Assert.AreEqual(onDemandModule, loader.InitializedModules[0]);
}
public void InvalidOnDemandModuleNameThrows()
{
var loader = new MockModuleInitializer();
var catalog = new MockModuleCatalog { Modules = new List<ModuleInfo> { CreateModuleInfo("Missing", InitializationMode.OnDemand) } };
ModuleManager manager = new ModuleManager(loader, catalog, new MockLogger());
var moduleTypeLoader = new MockModuleTypeLoader();
manager.ModuleTypeLoaders = new List<IModuleTypeLoader> { moduleTypeLoader };
manager.Run();
manager.LoadModule("NonExistent");
}
public void ShouldThrowOnRetrieverErrorAndWrapException()
{
var loader = new MockModuleInitializer();
var moduleInfo = CreateModuleInfo("NeedsRetrieval", InitializationMode.WhenAvailable);
var catalog = new MockModuleCatalog { Modules = { moduleInfo } };
ModuleManager manager = new ModuleManager(loader, catalog, new MockLogger());
var moduleTypeLoader = new MockModuleTypeLoader();
Exception retrieverException = new Exception();
moduleTypeLoader.LoadCompletedError = retrieverException;
manager.ModuleTypeLoaders = new List<IModuleTypeLoader> { moduleTypeLoader };
Assert.IsFalse(loader.InitializeCalled);
try
{
manager.Run();
}
catch (Exception ex)
{
Assert.IsInstanceOfType(ex, typeof(ModuleTypeLoadingException));
Assert.AreEqual(moduleInfo.ModuleName, ((ModularityException)ex).ModuleName);
StringAssert.Contains(ex.Message, moduleInfo.ModuleName);
Assert.AreSame(retrieverException, ex.InnerException);
return;
}
Assert.Fail("Exception not thrown.");
}
public void ShouldLogMessageOnModuleRetrievalError()
{
var loader = new MockModuleInitializer();
var moduleInfo = CreateModuleInfo("ModuleThatNeedsRetrieval", InitializationMode.WhenAvailable);
var catalog = new MockModuleCatalog { Modules = { moduleInfo } };
var logger = new MockLogger();
ModuleManager manager = new ModuleManager(loader, catalog, logger);
var moduleTypeLoader = new MockModuleTypeLoader();
moduleTypeLoader.LoadCompletedError = new Exception();
manager.ModuleTypeLoaders = new List<IModuleTypeLoader> { moduleTypeLoader };
try
{
manager.Run();
}
catch
{
// Ignore all errors to make sure logger is called even if errors thrown.
}
Assert.IsNotNull(logger.LastMessage);
StringAssert.Contains(logger.LastMessage, "ModuleThatNeedsRetrieval");
Assert.AreEqual<Category>(Category.Exception, logger.LastMessageCategory);
}
public void ShouldInitializeIfDependenciesAreMet()
{
var initializer = new MockModuleInitializer();
var requiredModule = CreateModuleInfo("ModuleThatNeedsRetrieval1", InitializationMode.WhenAvailable);
requiredModule.ModuleName = "RequiredModule";
var dependantModuleInfo = CreateModuleInfo("ModuleThatNeedsRetrieval2", InitializationMode.WhenAvailable, "RequiredModule");
var catalog = new MockModuleCatalog { Modules = { requiredModule, dependantModuleInfo } };
catalog.GetDependentModules = delegate(ModuleInfo module)
{
if (module == dependantModuleInfo)
return new[] { requiredModule };
else
return null;
};
ModuleManager manager = new ModuleManager(initializer, catalog, new MockLogger());
var moduleTypeLoader = new MockModuleTypeLoader();
manager.ModuleTypeLoaders = new List<IModuleTypeLoader> { moduleTypeLoader };
manager.Run();
Assert.IsTrue(initializer.InitializeCalled);
Assert.AreEqual(2, initializer.InitializedModules.Count);
}
public void ShouldNotInitializeIfDependenciesAreNotMet()
{
var loader = new MockModuleInitializer();
var requiredModule = CreateModuleInfo("ModuleThatNeedsRetrieval1", InitializationMode.WhenAvailable);
requiredModule.ModuleName = "RequiredModule";
var dependantModuleInfo = CreateModuleInfo("ModuleThatNeedsRetrieval2", InitializationMode.WhenAvailable, "RequiredModule");
var catalog = new MockModuleCatalog { Modules = { requiredModule, dependantModuleInfo } };
catalog.GetDependentModules = m => new[] { requiredModule };
ModuleManager manager = new ModuleManager(loader, catalog, new MockLogger());
var moduleTypeLoader = new MockModuleTypeLoader();
manager.ModuleTypeLoaders = new List<IModuleTypeLoader> { moduleTypeLoader };
manager.Run();
moduleTypeLoader.RaiseLoadModuleCompleted(new LoadModuleCompletedEventArgs(dependantModuleInfo, null));
Assert.IsFalse(loader.InitializeCalled);
Assert.AreEqual(0, loader.InitializedModules.Count);
}
public void ShouldNotLoadModuleThatNeedsRetrievalTwice()
{
var loader = new MockModuleInitializer();
var onDemandModule = CreateModuleInfo("ModuleThatNeedsRetrieval", InitializationMode.OnDemand);
var catalog = new MockModuleCatalog { Modules = { onDemandModule } };
var manager = new ModuleManager(loader, catalog, new MockLogger());
var moduleTypeLoader = new MockModuleTypeLoader();
manager.ModuleTypeLoaders = new List<IModuleTypeLoader> { moduleTypeLoader };
manager.Run();
manager.LoadModule("ModuleThatNeedsRetrieval");
moduleTypeLoader.RaiseLoadModuleCompleted(new LoadModuleCompletedEventArgs(onDemandModule, null));
loader.InitializeCalled = false;
manager.LoadModule("ModuleThatNeedsRetrieval");
Assert.IsFalse(loader.InitializeCalled);
}
public void ShouldNotLoadTypeIfModuleInitialized()
{
var loader = new MockModuleInitializer();
var alreadyPresentModule = CreateModuleInfo(typeof(MockModule), InitializationMode.WhenAvailable);
alreadyPresentModule.State = ModuleState.ReadyForInitialization;
var catalog = new MockModuleCatalog { Modules = { alreadyPresentModule } };
var manager = new ModuleManager(loader, catalog, new MockLogger());
var moduleTypeLoader = new MockModuleTypeLoader();
manager.ModuleTypeLoaders = new List<IModuleTypeLoader> { moduleTypeLoader };
manager.Run();
Assert.IsFalse(moduleTypeLoader.LoadedModules.Contains(alreadyPresentModule));
Assert.IsTrue(loader.InitializeCalled);
Assert.AreEqual(1, loader.InitializedModules.Count);
Assert.AreEqual(alreadyPresentModule, loader.InitializedModules[0]);
}
public void EmptyOnDemandModuleReturnedThrows()
{
var loader = new MockModuleInitializer();
var catalog = new MockModuleCatalog { CompleteListWithDependencies = modules => new List<ModuleInfo>() };
ModuleManager manager = new ModuleManager(loader, catalog, new MockLogger());
var moduleRetriever = new MockModuleTypeLoader();
manager.ModuleTypeLoaders = new List<IModuleTypeLoader> { moduleRetriever };
manager.Run();
manager.LoadModule("NullModule");
}