This speeds up assumevalid.py from 22s to 7s on my machine. On travis, this
should be an improvement of a few minutes. Without this, Travis actually
fails due to block download timeouts.
7148b74dc [tests] Functional tests must explicitly set num_nodes (John Newbery)
5448a1471 [tests] don't override __init__() in individual tests (John Newbery)
6cf094a02 [tests] Avoid passing around member variables in test_framework (John Newbery)
36b626867 [tests] TestNode: separate add_node from start_node (John Newbery)
be2a2ab6a [tests] fix - use rpc_timeout as rpc timeout (John Newbery)
Pull request description:
Some additional tidyups after the introduction of TestNode:
- commit 1 makes TestNode use the correct rpc timeout. This should have been included in #11077
- commit 2 separates `add_node()` from `start_node()` as originally discussed here: https://github.com/bitcoin/bitcoin/pull/10556#discussion_r121161453 with @kallewoof . The test writer no longer needs to assign to `self.nodes` when starting/stopping nodes.
- commit 3 adds a `set_test_params()` method, so individual tests don't need to override `__init__()` and call `super().__init__()`
Tree-SHA512: 0adb030623b96675b5c29e2890ce99ccd837ed05f721d0c91b35378c5ac01b6658174aac12f1f77402e1d38b61f39b3c43b4df85c96952565dde1cda05b0db84
e9e939108 [tests] Check connectivity before sending in assumevalid.py (John Newbery)
Pull request description:
assumevalid.py would try to send over a closed P2P connection in a loop,
hitting the following failure many times:
`TestFramework.mininode (ERROR): Cannot send message. No connection to node!`
The test still passed, but this is a lot of noise in the test log.
Just check that the connection is open before trying to send.
Tree-SHA512: 6faf2ce5717de976fed1b5c863bc8d17e785928690f833d5bf175178f95d39f455635a844fe7e0dfdad83ae779dd45bc6e4ed89a9467d8482c5be73b55095c8d
We only want to verify that assumevalid causes block 102 to be accepted
even though it contains an invalid script, so there is no need to send
more blocks.
Dash has only 1/4 of block time compared to Bitcoin, which requires 4 times
the amount of headers so that the assumevalid check in ConnectBlock results
in skipping of script checks.
Using so many headers now causes block time validation to fail (too far in
the future), so we need to adjust mock time as well.
