Alexandru Vasile
f1b2189e83
This PR adds tests for the `transaction_broadcast` method. The testing needs to coordinate the following components: - The `TestApi` marks transactions as invalid and implements `ChainApi::validate_transaction` - this is what dictates if a transaction is valid or not and is called from within the `BasicPool` - The `BasicPool` which maintains the transactions and implements `submit_and_watch` needed by the tx broadcast to submit the transaction - The status of the transaction pool is exposed by mocking the BasicPool - The `ChainHeadMockClient` which mocks the `BlockchainEvents::import_notification_stream` needed by the tx broadcast to know to which blocks the transaction is submitted The following changes have been added to the substrate testing to accommodate this: - `TestApi` gets ` remove_invalid`, counterpart to `add_invalid` to ensure an invalid transaction can become valid again; as well as a priority setter for extrinsics - `BasicPool` test constructor is extended with options for the `PoolRotator` - this mechanism is needed because transactions are banned for 30mins (default) after they are declared invalid - testing bypasses this by providing a `Duration::ZERO` ### Testing Scenarios - Capture the status of the transaction as it is normally broadcasted - `transaction_stop` is valid while the transaction is in progress - A future transaction is handled when the dependencies are completed - Try to resubmit the transaction at a later block (currently invalid) - An invalid transaction status is propagated; the transaction is marked as temporarily banned; then the ban expires and transaction is resubmitted This builds on top of: https://github.com/paritytech/polkadot-sdk/pull/3079 Part of: https://github.com/paritytech/polkadot-sdk/issues/3084 cc @paritytech/subxt-team --------- Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io> Co-authored-by: James Wilson <james@jsdw.me>
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