public IReadStream <T> Create(JoinedXsvStreamContext context)
{
XsvToObjectStreamFactory <T> x = null;
var lineReadFactories = context.FilePaths.Select(i => FactoryChain.Create(FactoryWatcher.Create(new FileLineReadStreamFactory(i), (o) => context.CurrentFilePath = i), x));//.ToList<IFactory<IReadStream<string>>>();
return(new HeadToTailMultiStream <T>(lineReadFactories.ToList()));
}
public void ShouldCreateNullValueWhenNoFactoriesAreRegistered()
{
var chain = new FactoryChain <Func <object> >();
var value = chain.CreateValue <object>(factory => factory());
Assert.IsNull(value);
}
public void ShouldUseRegisteredFactoryWhenCreatingValue()
{
var chain = new FactoryChain <Func <int> >();
chain.RegisterFactory(() => 5);
var value = chain.CreateValue <int>(factory => factory());
Assert.AreEqual(5, value);
}
public void ShouldPassFactoryToCreatorWhenCreatingValue()
{
var chain = new FactoryChain <int>();
chain.RegisterFactory(5);
var someFactory = 0;
chain.CreateValue <object>(factory => { someFactory = factory; return(null); });
Assert.AreEqual(5, someFactory);
}
public void ShouldUseFirstNonNullValueReturnedFromCreator()
{
var chain = new FactoryChain <Func <int?> >();
chain.RegisterFactory(() => null);
chain.RegisterFactory(() => 2);
chain.RegisterFactory(() => 3);
var value = chain.CreateValue <int?>(factory => factory());
Assert.AreEqual(value, 2);
}
public void ShouldThrowIfCreatorIsNullWhenCreatingValue()
{
var chain = new FactoryChain <object>();
chain.CreateValue <object>(null);
}
public void ShouldNotRegisterNullFactory()
{
var chain = new FactoryChain <object>();
chain.RegisterFactory(null);
}