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1284 commits

Author SHA1 Message Date
MarcoFalke feda41e0a7
Merge #14811: Mining: Enforce that segwit option must be set in GBT
d2ce315fbf [docs] add release note for change to GBT (John Newbery)
0025c9eae4 [mining] segwit option must be set in GBT (John Newbery)

Pull request description:

  Calling getblocktemplate without the segwit rule specified is most
  likely a client error, since it results in lower fees for the miner.
  Prevent this client error by failing getblocktemplate if called without
  the segwit rule specified.

  Of the previous 1000 blocks (measured at block [551591 (hash 0x...173c811)](https://blockstream.info/block/000000000000000000173c811e79858808abc3216af607035973f002bef60a7a)), 991 included segwit transactions.

Tree-SHA512: 7933b073d72683c9ab9318db46a085ec19a56a14937945c73f783ac7656887619a86b74db0bdfcb8121df44f63a1d6a6fb19e98505b2a26a6a8a6e768e442fee
2018-12-21 13:46:06 +01:00
MarcoFalke fabcd645b9
test: Avoid racy test p2p_timeouts 2018-12-21 02:00:32 +01:00
MarcoFalke 45fe39022a
Merge #15005: test: Bump timeout to run tests in travis thread sanitizer
fa05d52af4 test: Bump timeout to run tests in travis thread sanitizer (MarcoFalke)

Pull request description:

  No need to exclude tests because their timeout was set too strict

Tree-SHA512: ea7032e674a66456bab40122adf4beebd703fd626a7567ca76d2a4e78041af115564d863dc7f742d39bd4adb249c29751439a1238d5e5c34e474c7221d4fd6e1
2018-12-21 01:03:28 +01:00
MarcoFalke 86e0a33f5c
Merge #14653: rpcwallet: Add missing transaction categories to rpc helptexts
f3f6dde56e Test coinbase category in wallet rpcs (andrewtoth)
e982f0b682 Add all category options to wallet rpc help (andrewtoth)

Pull request description:

  The current helptext for `listtransactions`, `listsinceblock` and `gettransaction` only list two of the five possible options for `category`. This incorrectly implies that these are the only two options, and can cause problems if the other three options aren't accounted for. Also, some of the documentation is incorrect when specifying which options are returned for which categories.

  This PR updates the helptext for these RPCs and adds a functional regression test for the cases when the other three categories are returned.

Tree-SHA512: 67dd7ff6269a3b0f17f5d1a61b0ae1fb1f3778f05e1c440bfbb9b3a005c9c6d740abcace20f3d597cf2bd6779c494448690f13fab0bd2340f206213bc7890b51
2018-12-21 05:57:25 +13:00
MarcoFalke fa05d52af4
test: Bump timeout to run tests in travis thread sanitizer 2018-12-20 08:06:28 +13:00
MarcoFalke b545a6e689
Merge #14964: test: Fix race in mempool_accept
faee59103d test: Fix race in mempool_accept (MarcoFalke)

Pull request description:

  If we happen to pick the same random coin to spend, there would be mempool conflicts in some runs of the test. Fix that by popping from a static list of coins to spend from.

Tree-SHA512: f6fd37e43d919371aa8bc3a2c93b569f9169961fe702f3641bb63180c3a88f12ca1857e9ed4d3723d5f04ca8ab5ef009a90e679580f36246a10b987620a55bee
2018-12-17 10:11:33 -05:00
MarcoFalke faee59103d
test: Fix race in mempool_accept 2018-12-14 18:12:17 -05:00
MarcoFalke 6723d8e3a6
Merge #14931: test: mempool_persist: Verify prioritization is dumped correctly
fa30a0e7f7 test: mempool_persist: Verify prioritization is dumped correctly (MarcoFalke)

Pull request description:

Tree-SHA512: ef39c470cd418443741b55e9765ee84e0a87a44e7756f88dea86df9b4d37a121a4fbcb97976fbe4693692691650fb1196093b7dadd3922359eb4720845d28f05
2018-12-14 14:16:11 -05:00
MarcoFalke b53573e5c6
Merge #14951: Revert "tests: Support calling add_nodes more than once"
fa4b8c90d3 test: add_nodes can only be called once after set_test_params (MarcoFalke)
faa831102a Revert "tests: Support calling add_nodes more than once" (MarcoFalke)

Pull request description:

  Writing tests should be straightforward and with little side-effects as possible.

  I don't see how this is needed and can not be achieved with `self.num_nodes` (and `self.extra_args` et al.)

Tree-SHA512: 83a67f2cba9d97e21d80847ff405a4633fcb0d5674486efa57ee1813e46efe8709ae0fb462b8339a01ebeca5c4f2d29ecb1807d648b8fd9ee8ce336b08d580a8
2018-12-14 13:02:10 -05:00
MarcoFalke fa4b8c90d3
test: add_nodes can only be called once after set_test_params 2018-12-13 15:08:38 -05:00
MarcoFalke faa831102a
Revert "tests: Support calling add_nodes more than once"
This reverts commit 98a1846b00.
2018-12-13 12:06:38 -05:00
Wladimir J. van der Laan 914faf1784
Merge #14805: tests: Support calling add_nodes more than once
98a1846b00 tests: Support calling add_nodes more than once (Steven Roose)

Pull request description:

  Ran into this while writing [a multi-chain test for Elements](https://github.com/ElementsProject/elements/pull/458) where I call this method more than once.

Tree-SHA512: f2d698fcb560552aa5d81a4c3fbf40b7269b228b34d85a118291649ef83f8c0a30cd82a28d418237b55893bcecd538046b704e64a4d8a41f2c0aef8033dc83e5
2018-12-13 15:04:47 +01:00
Wladimir J. van der Laan 7202ae2e1b
Merge #14926: test: consensus: Check that final transactions are valid
aaaa8eb1ed test: consensus: Check that final transactions are valid (MarcoFalke)
fae3617d79 test: Correctly deserialize without witness (MarcoFalke)

Pull request description:

  There is no check that checks that final transactions are valid, i.e. the consensus rules could be changed (accidentally) with none of the tests failing.

Tree-SHA512: 48f4c24bfcc525ddbc1bfe8c37131953b464823428c1f7a278ba6d98b98827b6b84a8eb2b33396bfb5b8cc4012b7cc1cd771637f405ea20beddae001c22aa290
2018-12-13 14:22:31 +01:00
Wladimir J. van der Laan 84dc252a02
Merge #14884: Travis: enforce Python 3.4 support through linter
31926ee8cf [test] functional framework: add CScript hex() for Python 3.4 (Sjors Provoost)
74ce326831 [test] Travis: enforce Python 3.4 support in functional tests (Sjors Provoost)

Pull request description:

  The minimum supported version of Python is 3.4 according to [dependencies.md](https://github.com/bitcoin/bitcoin/blob/master/doc/dependencies.md). This PR makes the Travis linter use this version in order to catch accidental use of modern syntax.

Tree-SHA512: 71b2c102be72b135a8ba049378d66875760f20a04a657102a399240c5c2b2ddbdfa7d5ab4c0c0242ecc3259e0ee8eb2273f331bc5eb824f4ae4c3cc58aea37ac
2018-12-13 13:17:19 +01:00
Wladimir J. van der Laan f17aca67b0
Merge #14903: tests: Handle ImportError explicitly, improve comparisons against None
c9ba253f4f Add E711 to flake8 check (Daniel Ingram)
17b55202da Compare to None with is/is not (Daniel Ingram)
1b89074ae2 Change '== None' to 'is None' (Daniel Ingram)
16d2937723 Handle exception as ImportError (Daniel Ingram)

Pull request description:

Tree-SHA512: aa5875ea3d9ac47ac898545ff023b511042cd377ea0c4594074daae119f3d4f3fc295721aad94a732a907086ecb32bce19a8eed38adf479f12663c4e8944f721
2018-12-13 13:10:33 +01:00
Pieter Wuille bdacbda253 Overhaul importmulti logic
This introduces various changes to the importmulti logic:
* Instead of processing input and importing things at the same time, first
  process all input data and verify it, so no changes are made in case of
  an error.
* Verify that no superfluous information is provided (no keys or scripts
  that don't contribute to solvability in particular).
* Add way more sanity checks, by means of descending into all involved
  scripts.
2018-12-12 16:32:33 -08:00
Sjors Provoost 31926ee8cf
[test] functional framework: add CScript hex() for Python 3.4
test/functional/wallet_importmulti.py failed with:
AttributeError: 'CScript' object has no attribute 'hex'
2018-12-12 11:09:04 +01:00
MarcoFalke fa30a0e7f7
test: mempool_persist: Verify prioritization is dumped correctly 2018-12-11 20:47:36 -05:00
MarcoFalke fa3e874d69
test: pruning: Check that verifychain can be called when pruned 2018-12-11 19:09:06 -05:00
MarcoFalke f65bce858f
Merge #14886: [tests] Refactor importmulti tests
ee3b21dccb [tests] Add docstring for wallet_importmulti.py (John Newbery)
fbdba40594 [tests] add test_address method to wallet_import.py (John Newbery)
fd3a02c381 [tests] add test_importmulti method to wallet_import.py (John Newbery)
08a4a0f70f [tests] add get_multisig function to wallet_importmulti.py (John Newbery)
7c99614b40 [tests] add get_key function to wallet_importmulti.py (John Newbery)
e5a8ea8f14 [tests] tidy up imports in wallet_importmulti.py (John Newbery)
cb41ade6b1 [tests] fix flake8 warnings in wallet_importmulti.py (John Newbery)

Pull request description:

  https://github.com/bitcoin/bitcoin/pull/14565 needs test coverage. This PR refactors wallet_importmulti.py to the following pattern:

  1. Add `get_key()` and `get_multisig()` methods, which generate keys on node0 and return the priv/pubkeys and all scriptPubKey and address variants.
  2. Add `test_importmulti()` method, which takes an importmulti request, sends it to node1 and tests against success and error codes/messages.
  3. Add `test_address()` method, which takes an address, sends it as a getaddressinfo request to node1 and tests the values returned.

  This does not add any specific testing for #14565, but makes it very straightforward to add that testing: `test_importmulti()` can be easily updated to test for returned warnings, and `test_address()` can be called multiple times against the different address variants for a singlesig/multisig.

Tree-SHA512: e0ae9d3436f0b4eec4f6b9bdc0f02aef49c5a16bbac319fd47b2cfcaf01d01780d7b296280e8760686a57fac63275eec09e2959d8aaeceae1b406d8eff768435
2018-12-11 13:56:38 -05:00
MarcoFalke 7701b62561
Merge #14857: wallet_keypool_topup.py: Test for all keypool address types
0dcac51049 wallet_keypool_topup.py: Test for all keypool address types (Gregory Sanders)

Pull request description:

  To protect against regressions if key scanning is changed.

Tree-SHA512: d1c4bb033bafd97203a3f68fb262a501442be947907d67902f0391fbdec39c095196403c7675e602806cc68d7e2d1f552ab339a58346162379978d06dad1c4bb
2018-12-11 13:45:24 -05:00
MarcoFalke aaaa8eb1ed
test: consensus: Check that final transactions are valid 2018-12-11 13:40:13 -05:00
MarcoFalke fae3617d79
test: Correctly deserialize without witness 2018-12-11 13:23:24 -05:00
John Newbery 0025c9eae4 [mining] segwit option must be set in GBT
Calling getblocktemplate without the segwit rule specified is most
likely a client error, since it results in lower fees for the miner.
Prevent this client error by failing getblocktemplate if called without
the segwit rule specified.
2018-12-10 16:42:14 -05:00
John Newbery ee3b21dccb [tests] Add docstring for wallet_importmulti.py
Adds a docstring describing the new importmulti test.
2018-12-10 15:35:38 -05:00
John Newbery fbdba40594 [tests] add test_address method to wallet_import.py
Adds a new test_address method for testing the
imported addresses.
2018-12-10 15:35:36 -05:00
John Newbery fd3a02c381 [tests] add test_importmulti method to wallet_import.py
Adds a new test_importmulti method for testing the
importmulti RPC method.
2018-12-10 15:19:08 -05:00
John Newbery 08a4a0f70f [tests] add get_multisig function to wallet_importmulti.py
Adds a new get_multisig function which generates
a new multisig and returns the public keys,
private keys and all script and address types.
2018-12-10 15:17:28 -05:00
John Newbery 7c99614b40 [tests] add get_key function to wallet_importmulti.py
Adds a new get_key function which generates
a new key and returns the public key,
private key and all script and address types.
2018-12-10 15:17:26 -05:00
Daniel Ingram 17b55202da Compare to None with is/is not 2018-12-10 15:11:37 -05:00
MarcoFalke 2753285be7
Merge #14788: tests: Possible fix the permission error when the tests open the cookie file
d6b3790d1a tests: check readability of cookie file (Chun Kuan Lee)

Pull request description:

  This PR would wait until the `.cookie` file is readable
  Possible fix no. 5 `PermissionError` in #14446

Tree-SHA512: e7055c7ca26a6eadbbe19e4eef08ffee61cd17de79b30af2f0d090f0ad81ca24815e3c7e034e5e30d47c580bb0b221b3955e9ff2fcec2274fbf7b9232ab0cdc7
2018-12-07 13:03:47 -05:00
MarcoFalke 9390217044
Merge #14795: test: allows test_runner command line to receive parameters for each test
5c40e7b91a test: allows test_runner command line to receive parameters for each test (marcoagner)

Pull request description:

  Fixes #14791.
  Seems to address the asked behaviour in a simple way, but could address more if a more complex behaviour is found to be needed (e.g. call `rpc_bind --ipv4` without the ".py" and have it added).

Tree-SHA512: d7e21dd0ada36dd97dac71196bb97702a92986b181beb3753e37e3294b899fb65129aff5f9a45fe92b06fbf7c74e605ccb87a422f874f7a85d30401f4c2228c8
2018-12-07 11:26:15 -05:00
MarcoFalke fa4c8679ed
rpc: Avoid creating non-standard raw transactions 2018-12-06 16:56:58 -05:00
John Newbery e5a8ea8f14 [tests] tidy up imports in wallet_importmulti.py 2018-12-06 12:18:52 -05:00
John Newbery cb41ade6b1 [tests] fix flake8 warnings in wallet_importmulti.py 2018-12-06 12:18:52 -05:00
Wladimir J. van der Laan a88bd3186d
Merge #14670: http: Fix HTTP server shutdown
28479f926f qa: Test bitcond shutdown (João Barbosa)
8d3f46ec39 http: Remove timeout to exit event loop (João Barbosa)
e98a9eede2 http: Remove unnecessary event_base_loopexit call (João Barbosa)
6b13580f4e http: Unlisten sockets after all workers quit (João Barbosa)
18e9685816 http: Send "Connection: close" header if shutdown is requested (João Barbosa)
02e1e4eff6 rpc: Add wait argument to stop (João Barbosa)

Pull request description:

  Fixes #11777. Reverts #11006. Replaces #13501.

  With this change the HTTP server will exit gracefully, meaning that all requests will finish processing and sending the response, even if this means to wait more than 2 seconds (current time allowed to exit the event loop).

  Another small change is that connections are accepted even when the server is stopping, but HTTP requests are rejected. This can be improved later, especially if chunked replies are implemented.

  Briefly, before this PR, this is the order or events when a request arrives (RPC `stop`):
   1. `bufferevent_disable(..., EV_READ)`
   2. `StartShutdown()`
   3. `evhttp_del_accept_socket(...)`
   4. `ThreadHTTP` terminates (event loop exits) because there are no active or pending events thanks to 1. and 3.
   5. client doesn't get the response thanks to 4.

  This can be verified by applying
  ```diff
       // Event loop will exit after current HTTP requests have been handled, so
       // this reply will get back to the client.
       StartShutdown();
  +    MilliSleep(2000);
       return "Bitcoin server stopping";
   }
  ```
  and checking the log output:
  ```
      Received a POST request for / from 127.0.0.1:62443
      ThreadRPCServer method=stop user=__cookie__
      Interrupting HTTP server
  **  Exited http event loop
      Interrupting HTTP RPC server
      Interrupting RPC
      tor: Thread interrupt
      Shutdown: In progress...
      torcontrol thread exit
      Stopping HTTP RPC server
      addcon thread exit
      opencon thread exit
      Unregistering HTTP handler for / (exactmatch 1)
      Unregistering HTTP handler for /wallet/ (exactmatch 0)
      Stopping RPC
      RPC stopped.
      Stopping HTTP server
      Waiting for HTTP worker threads to exit
      msghand thread exit
      net thread exit

      ... sleep 2 seconds ...

      Waiting for HTTP event thread to exit
      Stopped HTTP server
  ```

  For this reason point 3. is moved right after all HTTP workers quit. In that moment HTTP replies are queued in the event loop which keeps spinning util all connections are closed. In order to trigger the server side close with keep alive connections (implicit in HTTP/1.1) the header `Connection: close` is sent if shutdown was requested. This can be tested by
  ```
  bitcoind -regtest
  nc localhost 18443
  POST / HTTP/1.1
  Authorization: Basic ...
  Content-Type: application/json
  Content-Length: 44

  {"jsonrpc": "2.0","method":"stop","id":123}
  ```

  Summing up, this PR:
   - removes explicit event loop exit — event loop exits once there are no active or pending events
   - changes the moment the listening sockets are removed — explained above
   - sends header `Connection: close` on active requests when shutdown was requested which is relevant when it's a persistent connection (default in HTTP 1.1) — libevent is aware of this header and closes the connection gracefully
   - removes event loop explicit break after 2 seconds timeout

Tree-SHA512: 4dac1e86abe388697c1e2dedbf31fb36a394cfafe5e64eadbf6ed01d829542785a8c3b91d1ab680d3f03f912d14fc87176428041141441d25dcb6c98a1e069d8
2018-12-06 17:43:07 +01:00
Wladimir J. van der Laan abbf4be181
Merge #14861: tests: Modify rpc_bind to conform to #14532 behaviour.
f3cf95ffd tests: Modify rpc_bind to conform to #14532 behaviour. (Carl Dong)

Pull request description:

  Fixes: https://github.com/bitcoin/bitcoin/issues/14792

Tree-SHA512: 5ee63a06c92dae5406515e9e483188309b82e07b760f363d8c8ec46a42fe5f75f88724759b0ac8ef596ee28a135626e0582f575855c5dfec2fbfff2249a109f7
2018-12-04 13:07:41 +01:00
Wladimir J. van der Laan 88445889f1
Merge #14733: P2P: Make peer timeout configurable, speed up very slow test and ensure correct code path tested.
48b37db50 make peertimeout a debug argument, remove error message translation (Zain Iqbal Allarakhia)
8042bbfbf p2p: allow p2ptimeout to be configurable, speed up slow test (Zain Iqbal Allarakhia)

Pull request description:

  **Summary:**

  1. _Primary_: Adds a `debug_only=true` flag for peertimeout, defaults to 60 sec., the current hard-coded setting.
  2. _Secondary_: Drastically speeds up `p2p_timeout.py` test.
  3. _Secondary_: Tests that the correct code path is being tested by adding log assertions to the test.

  **Rationale:**

  - P2P timeout was hard-coded: make it explicitly specified and configurable, instead of a magic number.
  - Addresses #13518; `p2p_timeout.py` takes 4 sec. to run instead of 61 sec.
  - Makes `p2p_timeout.py` more explicit. Previously, we relied on a comment to inform us of the timeout amount being tested. Now it is specified directly in the test via passing in the new arg; `-peertimeout=3`.
  - Opens us up to testing more P2P scenarios; oftentimes slow tests are the reason we don't test.

  **Locally verified changes:**

  _With Proposed Change (4.7 sec.):_
  ```
  $ time ./test/functional/p2p_timeouts.py
  2018-11-19T00:04:19.077000Z TestFramework (INFO): Initializing test directory /tmp/testhja7g2n7
  2018-11-19T00:04:23.479000Z TestFramework (INFO): Stopping nodes
  2018-11-19T00:04:23.683000Z TestFramework (INFO): Cleaning up /tmp/testhja7g2n7 on exit
  2018-11-19T00:04:23.683000Z TestFramework (INFO): Tests successful

  real    0m4.743s
  ```

  _Currently  on master (62.8 sec.):_
  ```
  $ time ./test/functional/p2p_timeouts.py
  2018-11-19T00:06:10.948000Z TestFramework (INFO): Initializing test directory /tmp/test6mo6k21h
  2018-11-19T00:07:13.376000Z TestFramework (INFO): Stopping nodes
  2018-11-19T00:07:13.631000Z TestFramework (INFO): Cleaning up /tmp/test6mo6k21h on exit
  2018-11-19T00:07:13.631000Z TestFramework (INFO): Tests successful

  real    1m2.836s
  ```

  _Error message demonstrated for new argument `-peertimeout`:_
  ```
  $ ./bitcoind -peertimeout=-5
  ...
  Error: peertimeout cannot be configured with a negative value.
  ```

Tree-SHA512: ff7a244ebea54c4059407bf4fb86465714e6a79cef5d2bcaa22cfe831a81761aaf597ba4d5172fc2ec12266f54712216fc41b5d24849e5d9dab39ba6f09e3a2a
2018-12-04 12:58:02 +01:00
Wladimir J. van der Laan 0257062e50
Merge #14816: Add CScriptNum decode python implementation in functional suite
2012d4df2 Add CScriptNum decode python implementation in functional suite (Gregory Sanders)

Pull request description:

  I needed this for reasons and thought it'd be good to upsteam it.

Tree-SHA512: 6ea89fa2a5f5a7759ba722f2b4ed5cd6423ebfff4e83ac8b8b5c935e6aa479684e626c5f41fa020816d2a9079a99af5564e30808594d5c13e3b51ec9b474926d
2018-12-04 11:28:53 +01:00
Carl Dong f3cf95ffdf tests: Modify rpc_bind to conform to #14532 behaviour.
- Even when rpcallowip is specified, only bind localhost
- Explicitly bind in run_allowip_test
2018-12-03 10:30:50 -08:00
Gregory Sanders 0dcac51049 wallet_keypool_topup.py: Test for all keypool address types 2018-12-03 18:12:31 +01:00
andrewtoth f3f6dde56e Test coinbase category in wallet rpcs 2018-12-01 13:00:38 -05:00
MarcoFalke 81bd349c9c
Merge #14845: [tests] Add wallet_balance.py
c1825b9d39 [tests] Add wallet_balance.py (John Newbery)

Pull request description:

  Adds a test specifically to test the wallet's getbalance and
  getunconfirmedbalance RPCs.

  `wallet_basic.py` is too large and should be broken down into more focused test cases.

  I wrote `wallet_balance.py` to test the changes in #14602. Offering as a PR in case people think it's more generally useful.

Tree-SHA512: 573ae8faf377df3d87d5112870b40690efb285fc5578fff8acc2ac1a0e4625ae65d3dfa8abbac577c87bec015038f425833783fa09f014f87906e8d098ed30d7
2018-11-30 11:23:22 -05:00
MarcoFalke 13a7454fbd
Merge #14380: fix assert crash when specified change output spend size is unknown
0fb2e69815 CreateTransaction: Assume minimum p2sh-p2wpkh spend size for unknown change (Gregory Sanders)
b06483c96a Remove stale comment in CalculateMaximumSignedInputSize (Gregory Sanders)

Pull request description:

  This is triggered anytime a fundraw type call(psbt or legacy) is used with a change output address that the wallet doesn't know how to sign for.

  This regression was added in 6a34ff5335 since BnB coin selection actually cares about this.

  The fix is to assume the smallest typical spend, a P2SH-P2WPKH, which is calculated using a "prototype" dummy signature flow. Future work could generalize this infrastructure to get estimated sizes of inputs for a variety of types.

  I also removed a comment which I believe is stale and misleading.

Tree-SHA512: c7e2be189e524f81a7aa4454ad9370cefba715e3781f1e462c8bab77e4d27540191419029e3ebda11e3744c0703271e479dcd560d05e4d470048d9633e34da16
2018-11-30 10:49:49 -05:00
MarcoFalke 74254fea1e
Merge #14683: tests: better combine_logs.py behavior
4aabadbf44 tests: have combine_logs default to most recent test dir (James O'Beirne)

Pull request description:

  Have `combine_logs.py` default to the most recent test directory if no argument is provided. This allows you to avoid an annoying copy-paste when iterating on a failing test, since you can do something like
  ```sh
  alias testlogs='./test/functional/combine_logs.py -c | less'

  ./test/functional/some_test.py  # fails
  testlogs
  ```

Tree-SHA512: 919642ab09c314888a23c9491963b35b9da87e60deb740d1d5e816444aa9bdda5e519dc8ca131669f2d563167ef5f5abb14e22f20f47bf8362915ed578181846
2018-11-30 10:30:43 -05:00
John Newbery c1825b9d39 [tests] Add wallet_balance.py
Adds a test specifically to test the wallet's getbalance and
getunconfirmedbalance RPCs.
2018-11-30 10:28:01 -05:00
Hennadii Stepanov e4a0c3547e
Improve blocksdir functional test.
A new node should not create an unused `blocks` directory in the root of
the data directory when `-testnet` or `-regtest` is specified.
2018-11-30 16:32:23 +02:00
James O'Beirne 4aabadbf44 tests: have combine_logs default to most recent test dir 2018-11-29 17:41:12 -05:00
Gregory Sanders 2012d4df23 Add CScriptNum decode python implementation in functional suite 2018-11-29 08:31:48 -05:00
Zain Iqbal Allarakhia 8042bbfbf0 p2p: allow p2ptimeout to be configurable, speed up slow test 2018-11-28 16:41:15 -08:00
MarcoFalke 9ebfe0e927
Merge #14819: Bugfix: test/functional/mempool_accept: Ensure oversize transaction is actually oversize
29aeed1734 Bugfix: test/functional/mempool_accept: Ensure oversize transaction is actually oversize (Luke Dashjr)

Pull request description:

  Simply integer dividing results in an acceptable size if the limit isn't an exact multiple of the input size.
  Use math.ceil to ensure the transaction is always oversize.

  (This issue can be triggered by changing the address style used.)

Tree-SHA512: e45062b0e8a3e9cb08e9dac5275b68d86e4377b460f1b3b995944090a055b0542a6986826312ec0e223369838094e42e20d8614b5c2bab9975b9a6f749295b21
2018-11-28 10:40:33 -05:00
James O'Beirne 59e387705c test: add invalid tx templates for use in functional tests
Add templates for easily constructing different kinds of invalid
transactions and use them in feature_block and p2p_invalid_tx.
2018-11-27 17:53:53 -05:00
MarcoFalke 600b85bb41
Merge #14794: tests: Add AddressSanitizer (ASan) Travis build
6541d59ddc Add LSan suppression warnings (practicalswift)
ff7212ec32 Add ASan Travis build (practicalswift)
ebd3bf2590 Make test p2p_invalid_messages.py pass: Allow for expected Travis ASAN memory increase (practicalswift)

Pull request description:

  Add ASan Travis build.

Tree-SHA512: b9712aaf0c9112b637b6ef0c5d93961863dcbecaf31d9561eb09258a61540fb31d2c8ecae86518a82763279e4aa6cac266cd352c2b2507df0335c0199f8b3d78
2018-11-27 16:30:39 -05:00
Pieter Wuille fdf146f329
Merge #14477: Add ability to convert solvability info to descriptor
109699dd33 Add release notes (Pieter Wuille)
b65326b562 Add matching descriptors to scantxoutset output + tests (Pieter Wuille)
16203d5df7 Add descriptors to listunspent and getaddressinfo + tests (Pieter Wuille)
9b2a25b13f Add tests for InferDescriptor and Descriptor::IsSolvable (Pieter Wuille)
225bf3e3b0 Add Descriptor::IsSolvable() to distinguish addr/raw from others (Pieter Wuille)
4d78bd93b5 Add support for inferring descriptors from scripts (Pieter Wuille)

Pull request description:

  This PR adds functionality to convert a script to a descriptor, given a `SigningProvider` with the relevant information about public keys and redeemscripts/witnessscripts.

  The feature is exposed in `listunspent`, `getaddressinfo`, and `scantxoutset` whenever these calls are applied to solvable outputs/addresses.

  This is not very useful on its own, though when we add RPCs to import descriptors, or sign PSBTs using descriptors, these strings become a compact and standalone way of conveying everything necessary to sign an output (excluding private keys).

  Unit tests and rudimentary RPC tests are included (more relevant tests can be added once RPCs support descriptors).

  Fixes #14503.

Tree-SHA512: cb36b84a3e0200375b7e06a98c7e750cfaf95cf5de132cad59f7ec3cbd201f739427de0dc108f515be7aca203652089fbf5f24ed283d4553bddf23a3224ab31f
2018-11-27 12:22:41 -08:00
MarcoFalke 8c119b2755
Merge #14813: qa: Add wallet_encryption error tests
fa739d4bd7 qa: Add wallet_encryption error tests (MarcoFalke)

Pull request description:

  The errors for empty passphrases are the help text of the RPC call, which is not very specific. Replace that with proper RPC errors and test them.

Tree-SHA512: 3137e0f8f2e42a1f8ab1eeb57c99052557725f6f85139ff48c24acc8f3cf4087802de5216f3ce97375b291d21bddb7cd1379a6f280166136a306a0c9663bbd42
2018-11-27 13:54:23 -05:00
Luke Dashjr 29aeed1734 Bugfix: test/functional/mempool_accept: Ensure oversize transaction is actually oversize
Simply integer dividing results in an acceptable size if the limit isn't an exact multiple of the input size.
Use math.ceil to ensure the transaction is always oversize.
2018-11-27 17:55:01 +00:00
practicalswift ebd3bf2590 Make test p2p_invalid_messages.py pass: Allow for expected Travis ASAN memory increase 2018-11-26 22:20:46 +01:00
MarcoFalke fa739d4bd7
qa: Add wallet_encryption error tests 2018-11-26 16:12:13 -05:00
James O'Beirne 5a1f57646b qa: clean up assert_memory_usage_stable utility 2018-11-26 15:47:30 -05:00
James O'Beirne 0cf1632f03 qa: fix p2p_invalid_messages on macOS 2018-11-26 15:14:03 -05:00
Chun Kuan Lee d6b3790d1a tests: check readability of cookie file 2018-11-24 02:32:38 +08:00
marcoagner 5c40e7b91a
test: allows test_runner command line to receive parameters for each test 2018-11-23 17:02:24 +00:00
João Barbosa 28479f926f qa: Test bitcond shutdown 2018-11-23 16:54:22 +00:00
Kristaps Kaupe c9066f07c9 Allow running rpc_bind.py --nonloopback test without IPv6 2018-11-22 23:57:07 +02:00
MarcoFalke 3dda4c5f03
Merge #14777: tests: Add regtest for JSON-RPC batch calls
3d2c7d6f94 Add regtest for JSON-RPC batch calls. (Daniel Kraft)

Pull request description:

  This adds a new regtest file `interface_rpc.py`, containing a test for batch JSON-RPC requests.  Those were previously not tested at all.  Tests for basic requests are not really necessary, as those are used anyway in lots of other regtests.

  The existing `interface_http.py` file is more about the underlying HTTP connection, so adding a new interface file for the JSON-RPC specific things makes sense.

Tree-SHA512: 7c7576004c8474e23c98f4bf25fb655328ba6bb73ea06744ebee1c0ffbb26bc132e621ae52955d51dab0803b322f8d711667626a777ac9b26003339c2484502f
2018-11-22 12:14:51 -05:00
Daniel Kraft 3d2c7d6f94 Add regtest for JSON-RPC batch calls.
This adds a new regtest file 'interface_rpc.py', containing a test for
batch JSON-RPC requests.  Those were previously not tested at all.  Tests
for basic requests are not really necessary, as those are used anyway
in lots of other regtests.

The existing interface_http.py file is more about the underlying HTTP
connection, so adding a new interface file for the JSON-RPC specific
things makes sense.
2018-11-21 19:43:06 +01:00
Wladimir J. van der Laan d7b0258ff0
Merge #14708: Warn unrecognised sections in the config file
3fb09b9889 Warn unrecognized sections in the config file (Akio Nakamura)

Pull request description:

  This PR intends to resolve #14702.

  In the config file, sections are specified by square bracket pair "[]"$,
  or included in the option name itself which separated by a period"(.)".

  Typicaly, [testnet] is not a correct section name and specified options
  in that section are ignored but user cannot recognize what is happen.

  So, add some log-warning messages if unrecognized section names are
  present in the config file after checking section only args.

  note: Currentry, followings are out of scope of this PR.
  1) Empty section name or option name can describe.
  e.g. [] , .a=b, =c
  2) Multiple period characters can exist in the section name and option name.
  e.g. [c.d.e], [..], f.g.h.i=j, ..=k

Tree-SHA512: 2cea02a0525feb40320613989a75cd7b7b1bd12158d5e6f3174ca77e6a25bb84425dd8812f62483df9fc482045c7b5402d69bc714430518b1847d055a2dc304b
2018-11-21 19:37:22 +01:00
Steven Roose 98a1846b00 tests: Support calling add_nodes more than once 2018-11-21 18:03:01 +00:00
Wladimir J. van der Laan 1649886054
Merge #14719: qa: Check specific reject reasons in feature_block
fa7da0617c qa: Check specific reject reasons in feature_block (MarcoFalke)

Pull request description:

  There are some consensus checks that are essentially turned off because we never send the block, but only the header. It happens that the header was sufficient to determine the invalidity of the block according to our consensus rules in those cases. Fix that by forcing the full block on the node unsolicited.

Tree-SHA512: a5534318370367ea8de07d853de7e845c8f5637cd6d5457e932a9555af26cc212625e443c00c93586d556cc770f301248e7cabd68131a37791ae91706e7e40b2
2018-11-21 14:41:22 +01:00
Wladimir J. van der Laan afa506f6eb
Merge #14552: wallet: detecting duplicate wallet by comparing the db filename.
591203149f wallet: Create IsDatabaseLoaded function (Chun Kuan Lee)
15c93f075a wallet: Add trailing wallet.dat when detecting duplicate wallet if it's a directory. (Chun Kuan Lee)
c456fbd8df Refactor: Move m_db pointers into BerkeleyDatabase (Russell Yanofsky)

Pull request description:

  Fix #14538

  Fix crash attempting to load the same wallet with different path strings that resolve to the same absolute path. The primary check which prevents loading the same wallet twice is:

  6b8d0a2164/src/wallet/db.cpp (L44)

  But this check is skipped if both wallet paths resolve to the same absolute path, due to caching here:

  6b8d0a2164/src/wallet/db.cpp (L467)

  Meanwhile a secondary check for duplicate wallets is not reliable because it based on a literal comparison, instead of comparison using absolute paths:

  6b8d0a2164/src/wallet/wallet.cpp (L3853)

  This PR fixes the latter check to compare the absolute path of a new wallet being loaded to absolute paths of wallets already loaded, so there should no longer be any way to load the same wallet more than once.

Tree-SHA512: 2fa01811c160b57be3b76c6b4983556a04bbce71a3f8202429987ec020664a062e897deedcd9248bc04e9baaa2fc7b464e2595dcaeff2af0818387bf1fcdbf6f
2018-11-20 15:15:59 +01:00
Akio Nakamura 3fb09b9889 Warn unrecognized sections in the config file
In the config file, sections are specified by square bracket pair "[]"$,
or included in the option name itself which separated by a period"(.)".

Typicaly, [testnet] is not a correct section name and specified options
in that section are ignored but user cannot recognize what is happen.

So, add some log/stderr-warning messages if unrecognized section names
are present in the config file after checking section only args.
2018-11-20 18:28:16 +09:00
Kristaps Kaupe 2474de0265 Fix running individually through test_runner.py, as suggested by @MarcoFalke (#14732) 2018-11-16 22:26:07 +02:00
Pieter Wuille b65326b562 Add matching descriptors to scantxoutset output + tests 2018-11-14 14:21:42 -08:00
Pieter Wuille 16203d5df7 Add descriptors to listunspent and getaddressinfo + tests 2018-11-14 14:21:42 -08:00
Russell Yanofsky 65b740f92b [wallet] Restore ability to list incoming transactions by label
This change partially reverts #13075 and #14023.

Fixes #14382
2018-11-13 17:49:23 -04:00
MarcoFalke 8c59bb85f9
Merge #14720: rpc: Correctly name arguments
fa0815c300 rpc: Correctly name arguments (Jon Layton)

Pull request description:

  Consistently use the same name to describe arguments in the documentation and add a test that uses the name.

  By splitting it up, the changes are easier to potentially backport and also make review easier when we switch to `RPCHelpMan`.

  The tests should pass with or without the changes in `src`.

  Partly stolen from #14459 (More RPC help description fixes by ch4ot1c)

Tree-SHA512: 1072992b1e93ac41006613523e54a0a8004f529fcb101eb9d74d91474abb0945a5a7539f249905151b904b87448f9efc0cacbd9e052fbe2ea9111e62f3e7249c
2018-11-13 16:49:23 -05:00
Wladimir J. van der Laan f617e05c38
Merge #14679: importmulti: Don't add internal addresses to address book
7afddfa8ce importmulti: Don't add internal addresses to address book (Gregory Sanders)

Pull request description:

  Currently anything imported with `internal` will not be treated as change since checking the address book is a primary test of this.

  Added basic tests of all combinations of arguments and change identification.

  Resolves https://github.com/bitcoin/bitcoin/issues/14662

Tree-SHA512: a1f08dc624a3fadee93cc5392d50c4796b0c5eedf38e295382f71570f2066d9e978ed6e3962084b902989863fe1273a8642d8fdb094a266d69de10622a4176b0
2018-11-13 21:34:23 +01:00
Jon Layton fa0815c300
rpc: Correctly name arguments 2018-11-13 14:24:40 -05:00
MarcoFalke e0c6bb7823
Merge #14705: travis: Avoid timeout on verify-commits check
fa5a6ce102 qa: Raise ci test_runner timeout to 40 mins (MarcoFalke)
fa3df025e1 travis: Avoid timeout on verify-commits check (MarcoFalke)

Pull request description:

  The verify-commits check is too expensive to run in full (calculate Tree-SHA512 and clean-merge for every single merge commit in history) every day (the cron job runs every ~24h). Since the cron job is running every day, it is also redundant to redo most of the work on the next day.

  So, only check two days worth of commits and assume that travis checked the Tree-SHA512 and clean-merge for all other commits already. The script will still check all the signatures, since the check-result for them depends on external inputs such as current time or the public keys we got from the server.

  [Note that travis is not meant to do the verification for anyone or is meant to be trusted in any way. This check only serves as a belt-and-suspender to notify maintainers in case of a technical issue or script malfunction. But since the script is timing out for months now, its purpose is diminished right now.]

Tree-SHA512: 336c5cbcc03cdf50be96cd61412471be9078d862da8ba2054f337441e062a6067c95fbbd03912e3de6a116f3caa75fd3f01a04864d34aae1489faa3154572815
2018-11-13 12:25:25 -05:00
MarcoFalke fa7da0617c
qa: Check specific reject reasons in feature_block 2018-11-13 11:05:24 -05:00
MarcoFalke 5d605b2745
Merge #14700: qa: Avoid race in p2p_invalid_block by waiting for the block request
fa21568208 qa: Avoid race in p2p_invalid_block by waiting for the block request (MarcoFalke)
6c787d340c tests: Make feature_block pass on centos (MarcoFalke)

Pull request description:

  This hopefully fixes #14661, which I believe is caused by a race in `send_blocks_and_test`. By setting `request_block=False` we only effectively check `node.getbestblockhash() != blocks[-1].hash` before returning and checking the debug.log. By setting `request_block=True` (the default) we make sure that we send the block, then sync with a ping before asserting on the debug.log.

  Even if this patch doesn't fix the issue, it is good cleanup: There is no reason to not wait for the blocks to be requested, since in all these cases the header gives no indication that the block is consensus invalid. So this patch makes the test also a bit stricter and more useful.

  Unrelated to this, I also include a fix that makes the tests pass on latest CentOS.

Tree-SHA512: c7abee3b7dc790a8af6c289159a7751bd962f6fa16c1537e7e21a0a0ef05b9596d1f4eb75319614603c05cb803e021314fa3596508ba443edd03046b25527e0f
2018-11-13 10:24:51 -05:00
Jonas Schnelli b60f4e3f09
Merge #13381: RPC: creates possibility to preserve labels on importprivkey
a6b5ec18f rpc: creates possibility to preserve labels on importprivkey (marcoagner)

Pull request description:

  Closes #13087.

  As discussed in the issue, this is a feature request instead of a bug report since the behaviour was as intended (i.e. label with default: `''`). With this, the old behaviour is kept while the possibility to achieve the preservation of labels, as expected in the open issue, is added.

Tree-SHA512: b33be50e1e7f62f7ddfae953177ba0926e2d848961f9fac7501c2b513322c0cb95787745d07d137488267bad1104ecfdbe800c6747f94162eb07c976835c1386
2018-11-13 14:52:01 +07:00
Wladimir J. van der Laan 47ed24cf8a
Merge #14356: fix converttopsbt permitsigdata arg, add basic test
88a79cb436 fix converttopsbt permitsigdata arg, add basic test (Gregory Sanders)

Pull request description:

  The final check for extraneous sigdata has a flipped boolean, resulting in incorrect behavior.

  Resolves https://github.com/bitcoin/bitcoin/issues/14355

Tree-SHA512: 5157a74b8ddebd7d836fba96765c4d7ed15a73d4289817353d3566a0f6803bd4bbc3f936735c517c7a83a6cbdb4052b9c61d23f6cc4ad00a6077278cd51adbd4
2018-11-12 19:14:13 +01:00
Gregory Sanders 0fb2e69815 CreateTransaction: Assume minimum p2sh-p2wpkh spend size for unknown change 2018-11-12 13:12:09 -05:00
Wladimir J. van der Laan 90c0b6aca2
Merge #14494: Error if # is used in rpcpassword in conf
0385109444 Add test for rpcpassword hash error (MeshCollider)
13fe258e91 Error if rpcpassword in conf contains a hash character (MeshCollider)

Pull request description:

  Fixes #13143 now #13482 was merged

Tree-SHA512: e7d00c8df1657f6b8d0eee1e06b9ce2b1b0a2de487377699382c1b057836e1571dac313ca878b5877c862f0461ba789a50b239d2a9f34accd8a6321f126e3d2a
2018-11-12 15:23:27 +01:00
Wladimir J. van der Laan af3c8a7e9f
Merge #14693: test_node: get_mem_rss fixups
fa9ed38d57 test_node: get_mem_rss fixups (MarcoFalke)

Pull request description:

  Follow up to #14522:

  * Fix math (Memory usage increase relative to previous memory usage, not final memory usage)
  * remove `shell=True`
  * assert that the node is running
  * Make it work on BSD-like systems

Tree-SHA512: fc1b4f88173914b6cb6373655cffd781044a0c146339e3fa90da03b197faa20954567a77335965b857d29d27f32661698b6a0340f0c616f643b8c4510cd360c2
2018-11-12 15:02:19 +01:00
MarcoFalke fa5a6ce102
qa: Raise ci test_runner timeout to 40 mins 2018-11-10 13:12:40 -05:00
Pieter Wuille 16e3b17578
Merge #14689: Require a public key to be retrieved when signing a P2PKH input
6b8d86ddb8 Require a public key to be retrieved when signing a P2PKH input (Andrew Chow)

Pull request description:

  If we do not have the public key for a P2PKH input, we should not continue to attempt to sign for it.

  This fixes a problem where a PSBT with a P2PKH output would include invalid BIP 32 derivation paths that are missing the public key.

Tree-SHA512: 850d5e74c06833da937d5bf0348bd134180be7167b6f9b9cecbf09f75e3543fbad60d0abbc0b9afdfa51ce165aa36168849f24a7c5abf1e75f37ce8f9a13d127
2018-11-09 20:14:28 -08:00
Pieter Wuille b30c62d4b9
Merge #14588: Refactor PSBT signing logic to enforce invariant and fix signing bug
e13fea975d Add regression test for PSBT signing bug #14473 (Glenn Willen)
565500508a Refactor PSBTInput signing to enforce invariant (Glenn Willen)
0f5bda2bd9 Simplify arguments to SignPSBTInput (Glenn Willen)
53e6fffb8f Add bool PSBTInputSigned (Glenn Willen)
65166d4cf8 New PartiallySignedTransaction constructor from CTransction (Glenn Willen)
4f3f5cb4b1 Remove redundant txConst parameter to FillPSBT (Glenn Willen)
fe5d22bc67 More concise conversion of CDataStream to string (Glenn Willen)

Pull request description:

  As discussed in the comments on #14473, I think that bug was caused primarily by failure to adhere to the invariant that a PSBTInput always has exactly one of the two utxo fields present -- an invariant that is already enforced by PSBTInput::IsSane, but which we were temporarily suspending during signing.

  This refactor repairs the invariant, also fixing the bug. It also simplifies some other code, and removes redundant parameters from some related functions.

  fixes #14473

Tree-SHA512: cbad3428175e30f9b7bac3f600668dd1a8f9acde16b915d27a940a2fa6d5149d4fbe236d5808fd590fb20a032274c99e8cac34bef17f79a53fdf69a5948c0fd0
2018-11-09 19:43:09 -08:00
MarcoFalke fa21568208
qa: Avoid race in p2p_invalid_block by waiting for the block request 2018-11-09 15:46:58 -05:00
MarcoFalke 6c787d340c tests: Make feature_block pass on centos 2018-11-09 15:46:32 -05:00
MarcoFalke fa9ed38d57
test_node: get_mem_rss fixups 2018-11-08 18:05:09 -05:00
Andrew Chow 6b8d86ddb8 Require a public key to be retrieved when signing a P2PKH input
If we do not have the public key for a P2PKH input, we should not
continue to attempt to sign for it.
2018-11-08 10:38:43 -05:00
Gregory Sanders 7afddfa8ce importmulti: Don't add internal addresses to address book 2018-11-07 14:43:14 -05:00
practicalswift 590a57fdec tests: Remove unused testing code 2018-11-07 18:07:49 +01:00
James O'Beirne 3d305e3b89 Send fewer spam messages in p2p_invalid_messages
Builds on travis are failing because the test node isn't
able to drop all the bad messages sent within the given
timeout. Reduce the number of bad messages we're sending
and increase the timeout to avoid failures on travis.
2018-11-06 11:20:00 -05:00
MarcoFalke 6af27b8157
Merge #14619: tests: Fix value display name in test_runner help text
5a05aa2db2 Add metavar to match var name in help text + Change wording for better readability (Martin Erlandsson)

Pull request description:

  The help text given by `test/functional/test_runner.py -h` refers to the value `n`, which is defined as `COMBINEDLOGSLEN` in the list of commands.

  To make the help text consistent, this PR changes the display name `COMBINEDLOGSLEN` to `n` by setting the argparse [`metavar`](https://docs.python.org/3/library/argparse.html#metavar) attribute. (`metavar` only changes the _displayed_ name)

  Alternatively: Do the opposite and change the help text to use `COMBINEDLOGSLEN`.

  ---

  Before PR:
  ```
  ➜  bitcoin > test/functional/test_runner.py -h | grep -A 1 combinedlogslen
    --combinedlogslen COMBINEDLOGSLEN, -c COMBINEDLOGSLEN
                          print a combined log (of length n lines) from all test nodes and test framework to the console on failure.
  ```

  After PR:
  ```
  ➜  bitcoin > test/functional/test_runner.py -h | grep -A 1 combinedlogslen
    --combinedlogslen n, -c n
                          print a combined log (of length n lines) from all test nodes and test frameworks to the console on failure.
  ```
  ---
  Also, fixed pluralization typo.

Tree-SHA512: a1124a4976d29fae1e8ecd7fa2ac523b7f05d541c611166532f44692995691a96faf797fa71582d78634f328b500cbee49c6ef296c8f1a898a57c050cc4e721d
2018-11-06 10:44:40 -05:00
Wladimir J. van der Laan cdddd17780
Merge #14658: qa: Add test to ensure node can generate all rpc help texts at runtime
bbbbb3f885 qa: Add test to ensure node can generate all help texts at runtime (MarcoFalke)

Pull request description:

  This might increase coverage, but more importantly this checks that the node doesn't crash when generating the help. (Right now the help is a static string, but in the future it might be generated at runtime)

Tree-SHA512: 0226e7c65f8a1a6fdc96c07dcf491d90559bc2355c92e9da9b1f174b09733fc349269e71da6d792f954de563a1e57c848471813eabae1a40b849a0d989520a0d
2018-11-06 11:58:39 +01:00
Wladimir J. van der Laan 024816d6cf
Merge #14522: tests: add invalid P2P message tests
d20a9fa13d tests: add tests for invalid P2P messages (James O'Beirne)
62f94d39f8 tests: add P2PConnection.send_raw_message (James O'Beirne)
5aa31f6ef2 tests: add utility to assert node memory usage hasn't increased (James O'Beirne)

Pull request description:

  - Adds `p2p_invalid_messages.py`: tests based on behavior for dealing with invalid and malformed P2P messages. Includes a test verifying that we can't DoS a node by spamming it with large invalid messages.
  - Adds `TestNode.assert_memory_usage_stable`: a context manager that allows us to ensure memory usage doesn't significantly increase on a node during some test.
  - Adds `P2PConnection.send_raw_message`: which allows us to construct and send messages with tweaked headers.

Tree-SHA512: 720a4894c1e6d8f1551b2ae710e5b06c9e4f281524623957cb01599be9afea82671dc26d6152281de0acb87720f0c53b61e2b27d40434d30e525dd9e31fa671f
2018-11-06 11:48:14 +01:00
Martin Erlandsson 5a05aa2db2 Add metavar to match var name in help text + Change wording for better readability 2018-11-06 07:54:52 +01:00