public void WithFallbackMessageHandlerImplementationFunction_WithoutImplementationFunction_Throws()
{
// Arrange
var services = new MessageHandlerCollection(new ServiceCollection());
// Act / Assert
Assert.ThrowsAny <ArgumentException>(
() => services.WithFallbackMessageHandler(createImplementation: (Func <IServiceProvider, PassThruFallbackMessageHandler>)null));
}
public void WithFallbackMessageHandler_WithoutImplementationFactory_Fails()
{
// Arrange
var services = new MessageHandlerCollection(new ServiceCollection());
// Act / Assert
Assert.ThrowsAny <ArgumentException>(
() => services.WithFallbackMessageHandler <PassThruFallbackMessageHandler>(createImplementation: null));
}
public void WithFallbackMessageHandler_WithValidType_RegistersInterface()
{
// Arrange
var services = new MessageHandlerCollection(new ServiceCollection());
// Act
services.WithFallbackMessageHandler <PassThruFallbackMessageHandler>();
// Assert
IServiceProvider provider = services.Services.BuildServiceProvider();
var messageHandler = provider.GetRequiredService <IFallbackMessageHandler>();
Assert.IsType <PassThruFallbackMessageHandler>(messageHandler);
}
public void WithFallbackMessageHandler_WithValidImplementationFunction_RegistersInterface()
{
// Arrange
var services = new MessageHandlerCollection(new ServiceCollection());
var expected = new PassThruFallbackMessageHandler();
// Act
services.WithFallbackMessageHandler(serviceProvider => expected);
// Assert
IServiceProvider provider = services.Services.BuildServiceProvider();
var actual = provider.GetRequiredService <IFallbackMessageHandler>();
Assert.Same(expected, actual);
}