* re-implement javadsl testkit
* fix mima problem
* rebase master
* move ImplicitSender/DefaultTimeout to scaladsl
* undo the change of moving scala api
* fix return type and add doc
* resolve conflicts and add more comments
- Switches from using size-of-1/2 Vectors to using Lists
- Fixes an issue where processorForNode wouldn't use the dispatcher form the settings
- Adds a dedicated Collect fusion op
- Adds various simplifications to ActorBasedFlowMaterializer
- Adds FIXMEs where appropriate
- Switches `grouped` to use a VectorBuilder
- Adds support for `scan`
- ActorBasedFlowMaterializer now uses Iterator instead of head+tail decomp on Seqs
- Identity and Completed Transformers are now cached
- Adds dedicated AstNodes for all combinators
- Adds a hook-in point for fusion in `ActorBasedFlowMaterializer`
- Adds support for `Operate` an AstNode with a function that create a fusing.Op
- Adds experimental and slow optimizer as a PoC
- Adds verification that Ast.Fused does not exist in optimizer input
* Fold Tap/Drain into Source/Sink
* Create Source/Sink helpers to create all Sources/Sinks
* Make concrete Source/Sink implementations private[scaladsl2]
Missing features are:
+ be able to use all junctions from Java
* re-think akka.stream.javadsl.japi (because variance)
+ better docs
+ enable all tests
+ Partial flow graph as well as GraphFlow tests
+ enabled more FlowTest tests
+ fixed naming of internal classes (no Java in class names)
+ added converters for UndefinedSink/Source
The junit-interface is treating "anything it cannot understand" as a
globbing pattern, thus when it didn't understand ScalaTest options, it
used them for globbing, and of course none of our junit tests matched
the "-oDF" pattern for example.
Debugged this with Stefan and we've opened an issue to improve the
integration in this respect:
https://github.com/sbt/junit-interface/issues/60Resolves#15178
