Commit graph

68 commits

Author SHA1 Message Date
Andrew Chow
b9d5674541 init: Remove sensitive flag from rpcbind 2023-01-23 17:25:02 -05:00
Hennadii Stepanov
306ccd4927
scripted-diff: Bump copyright headers
-BEGIN VERIFY SCRIPT-
./contrib/devtools/copyright_header.py update ./
-END VERIFY SCRIPT-

Commits of previous years:
- 2021: f47dda2c58
- 2020: fa0074e2d8
- 2019: aaaaad6ac9
2022-12-24 23:49:50 +00:00
MacroFake
555519d082
test: Remove wallet option from non-wallet tests
Review note: The changes are complete, because self.options.descriptors
is set to None in parse_args (test_framework.py).

A value of None implies -disablewallet, see the previous commit.

So if a call to add_wallet_options is missing, it will lead to a test
failure when the wallet is compiled in.
2022-11-10 17:19:13 +01:00
josibake
deba6fe315
test: update feature_config_args.py
add two new test cases for conf and reindex
2022-10-06 18:20:30 -04:00
Martin Zumsande
385f5a4c3f p2p: Don't query DNS seeds when both IPv4 and IPv6 are unreachable
This happens, for example, if the user specified -onlynet=onion or
-onlynet=i2p. DNS seeds only resolve to IPv4 / IPv6 addresses,
making their answers useless to us, since we don't want to make
connections to these.
If, within the DNS seed thread, we'd instead do fallback AddrFetch
connections to one of the clearnet addresses the DNS seed resolves to,
we might get usable addresses from other networks
if lucky, but would be violating our -onlynet user preference
in doing so.

Therefore, in this case it is better to rely on fixed seeds for networks we
want to connect to.

Co-authored-by: Vasil Dimov <vd@FreeBSD.org>
2022-09-06 15:16:35 -04:00
MacroFake
4a8709821e
Merge bitcoin/bitcoin#24830: init: Allow -proxy="" setting values
1d4122dfef init: Allow -proxy="" setting values (Ryan Ofsky)

Pull request description:

  This drops the `No proxy server specified. Use -proxy=<ip> or -proxy=<ip:port>` error when a empty `-proxy=` command line argument, `bitcoin.conf` value, or `settings.json` value is specified, and just makes bitcoin connect and listen normally in these cases.

  The error was originally added in https://github.com/bitcoin/bitcoin/pull/20003 to prevent a bare `-proxy` command line argument with no assignment from clearing proxy settings. But it was implemented in an overbroad way breaking empty `-proxy=` assignments as well.

  The motivation for this change is to prevent a GUI bug that happens with https://github.com/bitcoin/bitcoin/pull/15936, reported in https://github.com/bitcoin/bitcoin/pull/15936#pullrequestreview-937685759 by vasild, that happens after a proxy setting is enabled and disabled in the GUI. But this change also makes sense on its own to remove a potentially confusing error message.

ACKs for top commit:
  hebasto:
    re-ACK 1d4122dfef, only rebased since my recent [review](https://github.com/bitcoin/bitcoin/pull/24830#pullrequestreview-941255672).

Tree-SHA512: 753adfce199ed078a6cd9e0ea78e76c0b14070f8fcfe2a4632cd0c6dfe6b4e135ddffbe11a97e5e30520ea9e5bda00bad1493cbaef74cf425aa8613249167f53
2022-05-20 08:28:08 +01:00
brunoerg
027aab663a test, contrib, refactor: use with when opening a file 2022-04-27 20:04:33 -03:00
Ryan Ofsky
1d4122dfef init: Allow -proxy="" setting values
This drops the `No proxy server specified. Use -proxy=<ip> or -proxy=<ip:port>`
error when a empty `-proxy=` command line argument, `bitcoin.conf` value, or
`settings.json` value is specified, and just makes bitcoin connect and listen
normally in these cases.

The error was originally added in https://github.com/bitcoin/bitcoin/pull/20003
to prevent a bare `-proxy` command line argument with no assignment from
clearing proxy settings. But it was implemented in an overbroad way breaking
empty `-proxy=` assignments as well.

The motivation for this change is to prevent a GUI bug that happens with
https://github.com/bitcoin/bitcoin/pull/15936, reported in
https://github.com/bitcoin/bitcoin/pull/15936#pullrequestreview-937685759 by
vasild, that happens after a proxy setting is enabled and disabled in the GUI.
But this change also makes sense on its own to remove a potentially confusing
error message.
2022-04-26 10:09:39 -04:00
MarcoFalke
fac23c2114
scripted-diff: Bump copyright headers
The previous diff touched most files in ./test/, so bump the headers to
avoid having to touch them again for a bump later.

-BEGIN VERIFY SCRIPT-
./contrib/devtools/copyright_header.py update ./test/
-END VERIFY SCRIPT-
2021-11-10 11:10:24 +01:00
MarcoFalke
fadecbd9a4
test: Fix tests on Windows 2021-09-08 18:58:31 +02:00
MarcoFalke
f6f7a12462
Merge bitcoin/bitcoin#22622: util: Check if specified config file cannot be opened
127b4608e9 test: Check if specified config file cannot be opened (nthumann)
6bb54708e6 util: Check if specified config file cannot be opened (nthumann)

Pull request description:

  Fixes https://github.com/bitcoin/bitcoin/issues/22612.
  When running e.g. `./src/bitcoind -datadir=/tmp/bitcoin -regtest -conf=/tmp/bitcoin/regtest/bitcoin.conf` and the specified config cannot be opened (doesn't exist, permission denied, ...), the initialization silently uses the default config.

  As voidburn already noted:
  > I can't think of a situation in which a config file is specified explicitly (in the startup options, as per service unit linked above), but inaccessible, where the fail condition should be to keep booting using defaults instead.

  With this patch applied, the initialization will fail immediately, if the specified config file cannot be opened. If no config file is explicitly specified, the behavior is unchanged. This not only affects `bitcoind`, but also `bitcoin-cli` and `bitcoin-qt`.

  In the example below the datadir is accessible, but the config file is not due to insufficient permissions:
  ```
  $ ./src/bitcoind -datadir=/tmp/bitcoin -regtest --debug=1 -conf=/tmp/bitcoin/regtest/bitcoin.conf
  Error: Error reading configuration file: specified config file "/tmp/bitcoin/regtest/bitcoin.conf" could not be opened.
  ```

ACKs for top commit:
  0xB10C:
    ACK 127b4608e9
  Zero-1729:
    tACK 127b4608e9
  theStack:
    Tested ACK 127b4608e9

Tree-SHA512: 4fe487921485426f1d1da8d256c388af517b984b639d776aec7b159b3e23b669824093d3bdd31139d9415ed5f5de405b3e6a51b110c8ab471f12b9c99ac67cc1
2021-08-23 12:58:01 +02:00
fanquake
e2f1fd8ee9
test: use f-strings in feature_config_args.py 2021-08-18 12:39:17 +08:00
nthumann
127b4608e9
test: Check if specified config file cannot be opened 2021-08-04 14:54:05 +02:00
fanquake
10fbb37268
Merge bitcoin/bitcoin#22098: [test, init] DNS seed querying logic
82b6f89819 [style] Small style improvements to DNS parameters (Amiti Uttarwar)
4c89e24f64 [test] Test the delay before querying DNS seeds (Amiti Uttarwar)
6395c8ed56 [test] Test the interactions between -forcednsseed and -dnsseed (Amiti Uttarwar)
6f6b7df6bd [init] Disallow starting up with conflicting paramters for -dnsseed and -forcednsseed (Amiti Uttarwar)
26d0ffe4f2 [test] Test -forcednsseed causes querying DNS seeds (Amiti Uttarwar)
35851450a9 [test] Test the interactions between -connect and -dnsseed (Amiti Uttarwar)
75c05af361 [test] Test logic to query DNS seeds with block-relay-only connections (Amiti Uttarwar)
9c08719778 [test] Introduce test logic to query DNS seeds (Amiti Uttarwar)

Pull request description:

  This PR adds a DNS seed to the regtest chain params to enable testing the DNS seed querying logic of `CConnman::ThreadDNSAddressSeed` and relevant startup parameters. Adds coverage for the changes in #22013 (and then some).

  The main behavioral change to bitcoind is that this PR disallows starting up with conflicting parameters for `-dnsseed` and `-forcednsseed`.

  The tests include:
  * parameter interactions of different combinations of `-connect`, `-dnsseed` and `-forcednsseed`
  * the delay before querying DNS seeds depending on how many addresses are in the addrman
  * the behavior of `-forcednsseed`
  * skipping DNS querying if we have outbound full relay connections & not block-relay-only connections

  Huge props to mzumsande for identifying the timing technique for testing successful connections before running `ThreadDNSAddressSeed` 🙌🏽

ACKs for top commit:
  mzumsande:
    ACK 82b6f89819
  jnewbery:
    reACK 82b6f89819

Tree-SHA512: 9f0c29bfbf99426727e79c0a25606ae09deab91a92e3c5cee7f84c3ca7503a8ac9ab85a85c51841d40b164ef8c991326070f0b2f41d075fb7985df26f6e95d6d
2021-08-03 11:21:15 +08:00
Amiti Uttarwar
9c08719778 [test] Introduce test logic to query DNS seeds
This commit introduces a DNS seed to the regest chain params in order to add
coverage to the DNS querying logic.

The first test checks that we do not query DNS seeds if we are able to
succesfully connect to 2 outbound connections. Since we participate in ADDR
relay with those connections, including sending a GETADDR message during the
VERSION handshake, querying the DNS seeds is unnecessary.

Co-authored-by: Martin Zumsande <mzumsande@gmail.com>
2021-07-30 11:15:49 -07:00
Martin Zumsande
8ca51af1ec test: Disable automatic connections by default
This prevents the node from trying to connect to random IPs on the internet
while running the functional tests. Exceptions are added when required for
the test to pass.
2021-07-26 19:11:13 +02:00
MarcoFalke
fab1eb65b1
test: Fix feature_config_args.py intermittent issue 2021-04-30 10:49:49 +02:00
MarcoFalke
fa730e9157
test: Avoid connecting to real network when running tests
Can be reviewed with --word-diff-regex=.
2021-02-21 11:02:58 +01:00
MarcoFalke
fa1b713941
test: Assume node is running in subtests
Every (sub)test in the framework assumes the node is running, except for
the (sub)tests in this file. Remove that confusion by stopping the node
at the start of every subtest, instead of at the end.
2021-02-21 11:01:53 +01:00
Dhruv Mehta
d4187e4619 [test] Use mocktime in test_seed_peers()
Test case now takes < 5 seconds instead of > 2 minutes
2021-02-12 09:35:18 -08:00
Dhruv Mehta
015637dd44 [refactor] Correct log message in net.cpp 2021-02-12 09:23:03 -08:00
Dhruv Mehta
fe3e993968 [p2p] No delay in adding fixed seeds if -dnsseed=0 and peers.dat is empty. Add -fixedseeds arg. 2021-02-11 16:10:40 -08:00
MarcoFalke
11cbd4bb54
Merge #17556: test: Change feature_config_args.py not to rely on strange regtest=0 behavior
ff44cae279 test: Change feature_config_args.py not to rely on strange regtest=0 behavior (Russell Yanofsky)

Pull request description:

  Update test to simply generate a normal mainnet configuration file instead of using a crazy setup where a regtest=1 config file using an includeconf in the [regtest] section includes another config file that specifies regtest=0, retroactively switching the network to mainnet.

  This setup was fragile and only worked because the triggered InitError happened early enough that none of the ignored [regtest] options mattered (only affecting log output).

  This change was originally made as part of #17493

Top commit has no ACKs.

Tree-SHA512: 3f77305454f04438493dfc2abd78a00434b30869454d1c3f54587b9c1f63239c49c90fb3b4d3a777ad130f2184e0f2dac87cee4cd23c50f1b3496a375943da01
2021-01-21 16:51:19 +01:00
Russell Yanofsky
01476a88a6 wallet: Make -wallet setting not create wallets
This changes -wallet setting to only load existing wallets, not create new ones.

- Fixes settings.json corner cases reported by sjors & promag:
  https://github.com/bitcoin-core/gui/issues/95,
  https://github.com/bitcoin/bitcoin/pull/19754#issuecomment-685858578,
  https://github.com/bitcoin/bitcoin/pull/19754#issuecomment-685858578

- Prevents accidental creation of wallets reported most recently by jb55
  http://www.erisian.com.au/bitcoin-core-dev/log-2020-09-14.html#l-355

- Simplifies behavior after #15454. #15454 took the big step of disabling
  creation of the default wallet. This PR extends it to avoid creating other
  wallets as well. With this change, new wallets just aren't created on
  startup, instead of sometimes being created, sometimes not. #15454 release
  notes are updated here and are simpler.

This change should be targeted for 0.21.0. It's a bug fix and simplifies
behavior of the #15937 / #19754 / #15454 features added in 0.21.0.
2020-10-21 08:48:43 -04:00
MarcoFalke
171cd05ae3
Merge #20034: test: Get rid of default wallet hacks
c1585bca8d test: Get rid of default wallet hacks (Russell Yanofsky)
ed3acda33b test, refactor: add default_wallet_name and wallet_data_filename variables (Russell Yanofsky)

Pull request description:

  Changes:

  - Get rid of setup_nodes (`-wallet`, `-nowallet`, `-disablewallet`) argument rewriting
  - Get rid of hardcoded wallet `""` names and `-wallet=""` args

  Motivation:

  - Simplify test framework behavior so it's easier to write new tests without having arguments mangled by the framework
  - Make tests more readable, replacing unexplained `""` string literals with `default_wallet_name` references
  - Make it trivial to update default wallet name and wallet data filename for sqlite #19077 testing
  - Stop relying on `-wallet` arguments to create wallets, so it is easy to change `-wallet` option in the future to only load existing wallets not create new ones (to avoid accidental wallet creation, and encourage use of wallet encryption and descriptor features)

ACKs for top commit:
  MarcoFalke:
    ACK c1585bca8d, only effective change is adding documentation 🎵

Tree-SHA512: f62dec7cbdacb5f330aa0e1eec89ab4d065540d91495bbedcb375eda1c080b45ce9edb310ce253c44c4839f1b4cc2c7df9816c58402d5d43f94a437e301ea8bc
2020-10-02 17:07:35 +02:00
Russell Yanofsky
c1585bca8d test: Get rid of default wallet hacks
- Get rid of hardcoded wallet "" names and -wallet="" args
- Get rid of setup_nodes (-wallet, -nowallet, -disablewallet) argument rewriting

Motivation:

- Simplify test framework behavior so it's easier to write new tests without
  having arguments mangled by the framework
- Make tests more readable, replacing unexplained "" string literals with
  default_wallet_name references
- Make it trivial to update default wallet name and wallet data filename for
  sqlite #19077 testing
- Stop relying on -wallet arguments to create wallets, so it is easy to change
  -wallet option in the future to only load existing wallets not create new
  ones (to avoid accidental wallet creation, and encourage use of wallet
  encryption and descriptor features)
2020-09-29 04:35:01 -04:00
practicalswift
9b4fa0af40 net: Print error message if -proxy is specified without arguments (instead of continuing without proxy server) 2020-09-23 15:41:49 +00:00
Russell Yanofsky
ff44cae279 test: Change feature_config_args.py not to rely on strange regtest=0 behavior
Update test to simply generate a normal mainnet configuration file instead of
using a crazy setup where a regtest=1 config file using an includeconf in the
[regtest] section includes another config file that specifies regtest=0,
retroactively switching the network to mainnet.

This setup was fragile and only worked because the triggered InitError happened
early enough that none of the ignored [regtest] options mattered (only
affecting log output).
2020-09-02 08:14:34 -05:00
Hennadii Stepanov
2aac093a3d
test: Add test coverage for -networkactive option 2020-07-22 22:55:48 +03:00
Jonathan Schoeller
d15db4b1fc refactor: Fix unreachable code in init arg checks
Building with -Wunreachable-code-loop-increment causes a warning
due to always returning on the first iteration of the loop that
outputs errors on invalid args.

Collect all errors, and output them in a single error message
after the loop completes, resolving the warning and avoiding
popup hell by outputting a seperate message for each error.
2020-06-02 06:20:04 +10:00
Wladimir J. van der Laan
8a56f79d49
Merge #17482: util: Disallow network-qualified command line options
900d8f6f70 util: Disallow network-qualified command line options (Russell Yanofsky)

Pull request description:

  Previously these were allowed but ignored.

  This change implements one of the settings simplifications listed in #17508. Change includes release notes.

ACKs for top commit:
  laanwj:
    ACK 900d8f6f70

Tree-SHA512: ab020a16a86c1e8ec709fbf798d533879d32c565eceeb7eb785c33042c49c6b4d1108c5453d8166e4a2abffc2c8802fbb6d3b895e0ddeefa8f274fd647e3c8ad
2020-02-05 16:23:53 +01:00
Sebastian Falbesoner
eca56f8929 test: replace 'regtest' leftovers by self.chain
Commit 1abcecc40c replaced 'regtest' by self.chain
'regtest' "in almost all current tests", this commit takes care of the remaining
ones.
2020-02-05 04:28:40 +01:00
MarcoFalke
f32564f0a7
Merge #16681: Tests: Use self.chain instead of 'regtest' in all current tests
1abcecc40c Tests: Use self.chain instead of 'regtest' in almost all current tests (Jorge Timón)

Pull request description:

  Simply avoiding the hardcoded string in more places for consistency.
  It can also allow for more easily reusing tests for other chains other than regtest.

  Separated from #8994 .
  Continues #16509 .

  It is still not complete (ie to be complete, we need the -chain parameter in #16680 and make whether acceptnonstdtxs is allowed for that chain or not customizable for regtest [or for custom chains like in #8994 ] ). But while being incomplete like #16509 , it's quite simple to review and another step forward IMO.

ACKs for top commit:
  Sjors:
    re-ACK 1abcecc. I think it's an improvement even if incomplete and if some PR's might accidentally bring "regtest" back. Subsequent improvements hopefully don't have to touch 16 files.
  elichai:
    Code review ACK 1abcecc40c
  ryanofsky:
    Code review ACK 1abcecc40c.
  ryanofsky:
    Code review ACK 1abcecc40c

Tree-SHA512: 5620de6dab235ca8bd8670d6366c7b9f04f0e3ca9c5e7f87765b38e16ed80c17d7d1630c0d5fd7c5526f070830d94dc74cc2096d8ede87dc7180ed20569509ee
2020-02-04 20:55:26 +00:00
Larry Ruane
b951b0973c on startup, write config options to debug.log 2020-01-29 15:44:00 -07:00
MarcoFalke
e09c701e01 scripted-diff: Bump copyright of files changed in 2020
-BEGIN VERIFY SCRIPT-
./contrib/devtools/copyright_header.py update ./
-END VERIFY SCRIPT-
2020-01-15 02:18:00 +07:00
Hennadii Stepanov
8b2f471a1b
qa: Fix double-negative arg test 2020-01-08 00:53:40 +02:00
Russell Yanofsky
900d8f6f70 util: Disallow network-qualified command line options
Previously these were allowed but ignored.
2019-12-19 16:27:15 -05:00
practicalswift
993e38a4e2 tests: Mark functional tests not supporting bitcoin-cli (--usecli) as such 2019-12-06 14:40:28 +00:00
Jorge Timón
1abcecc40c
Tests: Use self.chain instead of 'regtest' in almost all current tests 2019-10-26 13:24:39 +02:00
MarcoFalke
83112db129
Merge #15864: Fix datadir handling
ffea41f530 Enable all tests in feature_config_args.py (Hennadii Stepanov)
66f5c17f8a Use CheckDataDirOption() for code uniformity (Hennadii Stepanov)
7e33a18a34 Fix datadir handling in bitcoin-cli (Hennadii Stepanov)
b28dada374 Fix datadir handling in bitcoin-qt (Hennadii Stepanov)
50824093bb Fix datadir handling in bitcoind (Hennadii Stepanov)
740d41ce9f Add CheckDataDirOption() function (Hennadii Stepanov)
c1f325126c Return absolute path early in AbsPathForConfigVal (Hennadii Stepanov)

Pull request description:

  Fix #15240, see: https://github.com/bitcoin/bitcoin/issues/15240#issuecomment-487353760
  Fix #15745
  Fix broken `feature_config_args.py` tests (disabled by MarcoFalke@fabe28a0cdcfa13e0e595a0905e3642a960d3077). All test are enabled now.
  This PR is alternative to #13621.

  User's `$HOME` directory is not touched unnecessarily now.

  ~To make reviewing easier only `bitcoind` code is modified (neither `bitcoin-cli` nor `bitcoin-qt`).~

  Refs:
  - https://github.com/bitcoin/bitcoin/issues/15745#issuecomment-479852569 by **laanwj**
  - #16220

Top commit has no ACKs.

Tree-SHA512: 4a4cda10e0b67c8f374da0c9567003d2b566d948e7f8550fe246868b5794c15010e88ea206009480b9cd2f737f310a15e984f920730448f99a895893bed351df
2019-08-19 10:01:30 -04:00
Hennadii Stepanov
dde80c272a
Use ArgsManager::NETWORK_ONLY flag 2019-07-27 22:51:58 +03:00
Hennadii Stepanov
ffea41f530
Enable all tests in feature_config_args.py 2019-07-24 19:15:10 +03:00
MarcoFalke
67923d6b3c
Merge #16366: init: Use InitError for all errors in bitcoind/qt
fa6f402bde Call node->initError instead of InitError from GUI code (Russell Yanofsky)
fad2502240 init: Use InitError for all errors in bitcoind/qt (MarcoFalke)

Pull request description:

  Using the same InitError for startup error in the daemon and the gui makes it possible to run the tests with the gui again:

  ```sh
  BITCOIND=bitcoin-qt ./test/functional/test_runner.py feature_includeconf feature_config_args

ACKs for top commit:
  hebasto:
    ACK fa6f402bde
  ryanofsky:
    utACK fa6f402bde. Only changes since last review are removing more includes and adding Node::initError method to avoid accessing node `InitError` function and global variables from GUI code.

Tree-SHA512: bd19e08dcea4019dfe40356bc5c63cb583cefed54b6c9dcfb82f1b5b00308d8e2b363549afcaea5e93bf83864dbe0917400c3b70f43a8a5bdff45c9cd34cc294
2019-07-23 18:40:46 -04:00
MarcoFalke
24dbcf3808
Merge #15891: test: Require standard txs in regtest by default
fa89badf88 test: Require standard txs in regtest (MarcoFalke)
fa9b419160 test: Add test that mainnet requires standard txs (MarcoFalke)
fa613ca0a8 chainparams: Remove unused fMineBlocksOnDemand (MarcoFalke)

Pull request description:

  I don't see a reason why regtest should allow non-standard txs, as it makes testing mainnet behaviour such as #15846 unnecessarily hard and unintuitive.

  Of course, testnet policy remains unchanged to allow propagation of non-standard txs.

ACKs for top commit:
  ajtowns:
    ACK fa89badf88

Tree-SHA512: c4c675affb054868850bd2683aa07f4c741a448cbacb2ea8334191e105f426b0790fe6a468be61e9c5880d24154f7bf1c7075051697172dce92180c1bc3a1c90
2019-07-16 16:10:17 -04:00
MarcoFalke
fad2502240
init: Use InitError for all errors in bitcoind/qt
Also, remove unused <boost/thread.hpp> include (and others)
2019-07-11 19:39:25 -04:00
MarcoFalke
fa9b419160
test: Add test that mainnet requires standard txs 2019-06-18 14:48:17 -04:00
MarcoFalke
fa7dd88b71
test: Add test for unknown args 2019-06-18 14:32:21 -04:00
Anthony Towns
0b282f9b00 Log early messages with -printtoconsole
This ensures log messages prior to StartLogging() are replayed to
the console as well as to the debug log file.
2019-05-28 14:26:42 -04:00
MarcoFalke
fa4a922d78
qa: Add test for missing testnet section in conf file 2019-03-21 15:54:28 -04:00
MarcoFalke
a74d588f21
Merge #14954: build: Require python 3.5
fa2797808e test: Remove python3.4 workaround in feature_dbcrash (MarcoFalke)
dddd1d05d3 .python-version: Specify full version 3.5.6 (MarcoFalke)
faa7cdf764 scripted-diff: Update copyright in ./test (MarcoFalke)
fa0e65b772 scripted-diff: test: Remove brackets after assert (MarcoFalke)
fab5a1e0f4 build: Require python 3.5 (MarcoFalke)
fa6bf21f5e scripted-diff: test: Use py3.5 bytes::hex() method (MarcoFalke)

Pull request description:

  Python 3.4 is EOL after March 2019, so switch to 3.5. See https://devguide.python.org/#status-of-python-branches

  This pull does the following in a bunch of commits:
  * scripted diff to use the `bytes::hex()` method in place of previous wrappers (`b2x`, `bytes_to_hex_str`, `hexlify`, ...)
  * Update the build system (gitian and travis) to remove python2.7 and replace it with python3.5
  * Another scripted-diff to remove brackets after `assert`. This is unrelated to the python3.5 switch, but a stylistic commit, so probably not worth to split up. The motivation behind it is to avoid asserting on data structures (such as tuples of length one), which never fails:
  ```py
  >>> assert(False,)   # with brackets
  >>> assert False,    # without brackets
  SyntaxError: invalid syntax
  >>> assert False     # proper assertion
  AssertionError
  ```
  * And then a final scripted diff to update the copyright headers in the `test` subfolder, since I touched most of the files anyway and it wouldn't make sense to split this commit out into a separate pull.

  For reference (contributed by luke-jr):

  Ubuntu LTS (bionic): 3.6.5
  Debian stable (stretch): 3.5.3
  RHEL 8 (expected before v0.19): 3.6.x
  Gentoo stable: 3.6.5
  Arch: 3.7.1

Tree-SHA512: 643c28cd2d5b9543ce4bf8ad2a8b282bc79b37dc5b25c9c8358e6ce201e2a67a546463e5f3430b16652eb2489d7c3ed4b0772cd2e2bf790fe68a5e3cc8a25029
2019-03-05 09:13:13 -05:00