Scope SEND

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Under ScopeStrategy.SEND, invocations for argument type OrderCreated are AuditHandler, then SearchHandler.

See Scope Strategies.

async with test_harness(
    di_container,
    commands_mapper=commands_mapper,
    domain_events_mapper=domain_events_mapper,
    scope_strategy=cqrs.ScopeStrategy.SEND,
) as harness:
    await harness.mediator.send(CreateOrder(sku="book"))
    entered = [item.handler for item in harness.invocations if item.argument_type is OrderCreated]
    assert entered == [AuditHandler, SearchHandler]

Library example: examples/testing/parallel_handlers.py.