Crate polkadot_node_subsystem_test_helpers

Utilities for testing subsystems.

Modules

• mock
  Generally useful mock data providers for unit tests.

Macros

• arbitrary_order
  Asserts that two patterns match, yet only one

Structs

• ForwardSubsystem
  A forward subsystem that implements Subsystem.
• MessageCounter
  Message counter over subsystems.
• SingleItemSink
  The sink half of a single-item sink that does not resolve until the item has been read.
• SingleItemStream
  The stream half of a single-item sink.
• TestSubsystemContext
  A test subsystem context.
• TestSubsystemContextHandle
  A handle for interacting with the subsystem context.
• TestSubsystemSender
  A test subsystem sender.
• Yield
  Future that yields the execution once and resolves immediately after.

Functions

• derive_erasure_chunks_with_proofs_and_root
  Helper for chunking available data.
• make_buffered_subsystem_context
  Make a test subsystem context with buffered overseer channel. Some tests (e.g. dispute-coordinator) create too many parallel operations and deadlock unless the channel is buffered. Usually buffer_size=1 is enough.
• make_subsystem_context
  Make a test subsystem context with buffer_size == 0. This is used by most of the tests.
• sender_receiver
  Construct a sender/receiver pair.
• single_item_sink
  Create a single-item Sink/Stream pair.
• subsystem_test_harness
  Test a subsystem, mocking the overseer