dac7a111bd refactor: test: use _ variable for unused loop counters (Sebastian Falbesoner)
Pull request description:
This tiny PR substitutes Python loops in the form of `for x in range(N): ...` by `for _ in range(N): ...` where applicable. The idea is indicating to the reader that a block (or statement, in list comprehensions) is just repeated N times, and that the loop counter is not used in the body, hence using the throwaway variable. This is already done quite often in the current tests (see e.g. `$ git grep "for _ in range("`). Another alternative would be using `itertools.repeat` (according to Python core developer Raymond Hettinger it's [even faster](https://twitter.com/raymondh/status/1144527183341375488)), but that doesn't seem to be widespread in use and I'm not sure about a readability increase.
The only drawback I see is that whenever one wants to debug loop iterations, one would need to introduce a loop variable again. Reviewing this is basically a no-brainer, since tests would fail immediately if a a substitution has taken place on a loop where the variable is used.
Instances to replace were found by `$ git grep "for.*in range("` and manually checked.
ACKs for top commit:
darosior:
ACK dac7a111bd
instagibbs:
manual inspection ACK dac7a111bd
practicalswift:
ACK dac7a111bd -- the updated code is easier to reason about since the throwaway nature of a variable is expressed explicitly (using the Pythonic `_` idiom) instead of implicitly. Explicit is better than implicit was we all know by now :)
Tree-SHA512: 5f43ded9ce14e5e00b3876ec445b90acda1842f813149ae7bafa93f3ac3d510bb778e2c701187fd2c73585e6b87797bb2d2987139bd1a9ba7d58775a59392406
substitutes "for x in range(N):" by "for _ in range(N):"
indicates to the reader that a block is just repeated N times, and
that the loop counter is not used in the body
This is a more narrowly-construed wait which eliminates the possibility of the
wait being triggered by other messages.
Co-authored-by: Billy Garrison <billygarrison.btc@gmail.com>
This diff has been generated with the following script, but is better
reviewed without looking at the script.
# -BEGIN VERIFY SCRIPT-
echo "Use msg_witness_block everywhere, except for tests that require msg_block"
# This could be a separate commit, but it is combined with the
# following scripts to reduce the overall diff
sed -i -e 's/msg_block/msg_witness_block/g' ./test/functional/{feature_assumevalid,feature_cltv,feature_dersig,feature_versionbits_warning,p2p_fingerprint,p2p_sendheaders,p2p_unrequested_blocks,example_test,rpc_blockchain}.py
echo "Rename msg_block to msg_no_witness_block"
# Rename msg_block to msg_no_witness_block in all tests (not the
# framework)
sed -i -e 's/msg_block/msg_no_witness_block/g' $(git grep -l msg_block ./test/functional/*.py)
# Derive msg_no_witness_block from msg_block
# Make msg_block a witness block in messages.py
patch -p1 --fuzz 0 << EOF
diff --git a/test/functional/test_framework/messages.py b/test/functional/test_framework/messages.py
index 00190e4cbd..e454ed5987 100755
--- a/test/functional/test_framework/messages.py
+++ b/test/functional/test_framework/messages.py
@@ -1133 +1133 @@ class msg_block:
- return self.block.serialize(with_witness=False)
+ return self.block.serialize()
@@ -1155 +1155 @@ class msg_generic:
-class msg_witness_block(msg_block):
+class msg_no_witness_block(msg_block):
@@ -1158,2 +1158 @@ class msg_witness_block(msg_block):
- r = self.block.serialize()
- return r
+ return self.block.serialize(with_witness=False)
@@ -1445 +1444 @@ class msg_blocktxn:
- r += self.block_transactions.serialize(with_witness=False)
+ r += self.block_transactions.serialize()
@@ -1452 +1451 @@ class msg_blocktxn:
-class msg_witness_blocktxn(msg_blocktxn):
+class msg_no_witness_blocktxn(msg_blocktxn):
@@ -1456,3 +1455 @@ class msg_witness_blocktxn(msg_blocktxn):
- r = b""
- r += self.block_transactions.serialize()
- return r
+ return self.block_transactions.serialize(with_witness=False)
EOF
# Conclude rename of msg_block to msg_no_witness_block
sed -i -e 's/msg_witness_block/msg_block/g' $(git grep -l msg_witness_block)
# -END VERIFY SCRIPT-
Remove tests of:
- compactblock behavior in a simulated pre-segwit version of bitcoind
This should have been removed a long time ago, as it is not generally
necessary for us to test the behavior of old nodes (except perhaps if we
want to test that upgrading from an old node to a new one behaves properly)
- compactblock behavior during segwit upgrade (ie verifying that network
behavior before and after activation was as expected)
This is unnecessary to test now that segwit activation has already happened.
Includes changes by John Newbery.
5eb20f81d9 Consistently use ParseHashV to validate hash inputs in rpc (Ben Woosley)
Pull request description:
ParseHashV validates the length and encoding of the string and throws
an informative RPC error on failure, which is as good or better than
these alternative calls.
Note I switched ParseHashV to check string length first, because
IsHex tests that the length is even, and an error like:
"must be of length 64 (not 63, for X)" is much more informative than
"must be hexadecimal string (not X)" in that case.
Split from #13420
Tree-SHA512: f0786b41c0d7793ff76e4b2bb35547873070bbf7561d510029e8edb93f59176277efcd4d183b3185532ea69fc0bbbf3dbe9e19362e8017007ae9d51266cd78ae
fa5587fe71 qa: wait_for_verack by default (MarcoFalke)
Pull request description:
This removes the need to do so manually every time a connection is added.
Tree-SHA512: a46c92cb4df41e30778b42b9fd3dcbd8d2d82aa7503d1213cb1c1165034f648d8caee01c292e2d87d05b0f71696996eef5be8a753f35ab49e5f66b0e3bf29f21
ParseHashV validates the length and encoding of the string and throws
an informative RPC error on failure, which is as good or better than
these alternative calls.
Note I switched ParseHashV to check string length first, because
IsHex tests that the length is even, and an error like:
"must be of length 64 (not 63, for X)" is much more informative than
"must be hexadecimal string (not X)"
4d9b4256d8 Fix typos (Dimitris Apostolou)
Pull request description:
Unfortunately I messed up my repo while trying to squash #12593 so I created a PR with just the correct fixes.
Tree-SHA512: 295d77b51bd2a9381f1802c263de7ffb2edd670d9647391e32f9a414705b3c8b483bb0e469a9b85ab6a70919ea13397fa8dfda2aea7a398b64b187f178fe6a06
Several test scripts define a subclass of P2PInterface called TestNode.
This commit renames those to TestP2PConn since we already have a
TestNode class in the test framework.
-BEGIN VERIFY SCRIPT-
sed -i s/TestNode/TestP2PConn/ test/functional/*py test/functional/test_framework/comptool.py
_END VERIFY SCRIPT-
