public async Task SplitJoin_CorrectlyBuild()
{
// arrange
var process = new ConcurrentBag <string> ();
var split_block = DataflowSplitJoin.CreateSplitBlockAsync <string, char> (async s =>
{
await Task.Yield();
process.Add(s);
return(s.ToCharArray());
});
var join_block = DataflowSplitJoin.CreateFinalJoinBlock <string, char> ();
split_block.LinkWithCompletionPropagation(join_block);
// act
foreach (var str in new[] { "a", "bb", "ccc" })
{
await split_block.SendAsync(str);
}
split_block.Complete();
await Task.WhenAll(split_block.Completion, join_block.Completion);
// assert
process.Should().BeEquivalentTo("a", "bb", "ccc");
}
public async Task SplitJoin_SplitReturnsNull_DoesNotThrow()
{
// arrange
var exceptions = new ConcurrentBag <Exception> ();
var split_block = DataflowSplitJoin.CreateSplitBlockAsync <string, char>
(async s =>
{
await Task.Yield();
return(null);
},
defaultExceptionLogger: (ex, obj) => exceptions.Add(ex));
var join_block = DataflowSplitJoin.CreateFinalJoinBlock <string, char> ();
split_block.LinkWithCompletionPropagation(join_block);
// act
await split_block.SendAsync("abc");
split_block.Complete();
await Task.WhenAll(split_block.Completion, join_block.Completion);
// assert
exceptions.Should().BeEmpty();
}
public async Task SplitProcessJoin_CorrectlyBuild()
{
// arrange
var process = new ConcurrentBag <char> ();
var split_block = DataflowSplitJoin.CreateSplitBlock <string, char> (s => s.ToCharArray());
var process_block = DataflowSplitJoin.CreateProcessBlock <string, char> ((s, c) => process.Add(c));
var join_block = DataflowSplitJoin.CreateFinalJoinBlock <string, char> ();
split_block.LinkWithCompletionPropagation(process_block);
process_block.LinkWithCompletionPropagation(join_block);
// act
foreach (var str in new[] { "a", "bb", "ccc" })
{
await split_block.SendAsync(str);
}
split_block.Complete();
await Task.WhenAll(split_block.Completion, join_block.Completion);
// assert
process.Should().BeEquivalentTo('a', 'b', 'b', 'c', 'c', 'c');
}
/// <summary>
/// Creates a dataflow block from current configuration.
/// </summary>
protected override ITargetBlock <SplitJoinItem <TParent, TItem> > CreateBlock()
{
ITargetBlock <SplitJoinItem <TParent, TItem> > block;
if (this.processAsync != null)
{
block = DataflowSplitJoin.CreateFinalJoinBlockAsync(this.processAsync, this.DefaultExceptionLogger);
}
else if (this.processSync != null)
{
block = DataflowSplitJoin.CreateFinalJoinBlock(this.processSync, this.DefaultExceptionLogger);
}
else
{
block = DataflowSplitJoin.CreateFinalJoinBlock <TParent, TItem> ();
}
return(block);
}
