assumevalid was merged as part of PR 9484, but was not added to the
test_runner, so is not run even as part of the extended tests.
This commit adds assumevalid to the list of tests in test_runner. It
also clarifies the code in assumevalid considerably.
This commit fixes the module-level docstrings for the tests and helper
modules in qa. Many of these tests were uncommented previously - this
commit ensures that every test case has at least a minimum level of
commenting.
Adds a qa testcase testing the new "-assumevalid" option. The testcase builds
a chain that includes and invalid signature for one of the transactions and
sends that chain to three nodes:
- node0 has no -assumevalid parameter and rejects the invalid chain.
- node1 has -assumevalid set and accepts the invalid chain.
- node2 has -assumevalid set but the invalid block is not buried deep
enough to assume invalid, and so rejects the invalid chain.
John Newbery