public void FindsAndRegistersAllHandlersInSingleAssembly()
{
// Arrange
var handlerRegistry = new QueryHandlerRegistry();
// Act
handlerRegistry.RegisterFromAssemblies(new[] { typeof(TestQueryHandler).Assembly });
// Assert
handlerRegistry.Get(typeof(TestQueryA)).ShouldNotBeNull();
handlerRegistry.Get(typeof(TestQueryB)).ShouldBeNull();
handlerRegistry.Get(typeof(TestQueryC)).ShouldBeNull();
}
public void ThrowsConfigurationExceptionWhenAddingADuplicatedRegistration()
{
// Arrange
var handlerRegistry = new QueryHandlerRegistry();
handlerRegistry.Register <TestQueryA, object, IQueryHandler <TestQueryA, object> >();
// Act
var exception = Assert.Throws <ConfigurationException>(() => handlerRegistry.Register <TestQueryA, object, IQueryHandler <TestQueryA, object> >());
// Assert
exception.Message.ShouldBe($"Registry already contains an entry for {typeof(TestQueryA).Name}");
handlerRegistry.Get(typeof(TestQueryA)).ShouldNotBeNull();
handlerRegistry.Get(typeof(TestQueryB)).ShouldBeNull();
handlerRegistry.Get(typeof(TestQueryC)).ShouldBeNull();
}
public void ReturnsNullForNotRegisteredHandler()
{
// Arrange
var handlerRegistry = new QueryHandlerRegistry();
handlerRegistry.Register <TestQueryA, object, IQueryHandler <TestQueryA, object> >();
// Act
var handlerType = handlerRegistry.Get(typeof(TestQueryB));
// Assert
handlerType.ShouldBeNull();
}
public void ReturnsRegisteredHandler()
{
// Arrange
var handlerRegistry = new QueryHandlerRegistry();
handlerRegistry.Register(typeof(TestQueryA), typeof(object), typeof(IQueryHandler <TestQueryA, object>));
// Act
var handlerType = handlerRegistry.Get(typeof(TestQueryA));
// Assert
handlerType.ShouldBe(typeof(IQueryHandler <TestQueryA, object>));
}
public void ReturnsRegisteredHandler()
{
// Arrange
var handlerRegistry = new QueryHandlerRegistry();
handlerRegistry.Register <TestQueryA, TestQueryA.Response, IQueryHandler <TestQueryA, TestQueryA.Response> >();
// Act
var handlerType = handlerRegistry.Get(typeof(TestQueryA));
// Assert
handlerType.ShouldBe(typeof(IQueryHandler <TestQueryA, TestQueryA.Response>));
}
