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The [functional](/test/functional/) folder contains a script test_runner
to call multiple functional tests from its folder.
Every pull request to the bitcoin repository is built and run through
the regression test suite. You can also run all or only individual
tests locally.
Test dependencies
=================
Before running the tests, the following must be installed.
Unix
----
The python3-zmq library is required. On Ubuntu or Debian it can be installed via:
```
sudo apt-get install python3-zmq
```
OS X
------
```
pip3 install pyzmq
```
Running tests
=============
You can run any single test by calling
test/functional/test_runner.py <testname>
Or you can run any combination of tests by calling
test/functional/test_runner.py <testname1> <testname2> <testname3> ...
Run the regression test suite with
test/functional/test_runner.py
Run all possible tests with
test/functional/test_runner.py --extended
By default, tests will be run in parallel. To specify how many jobs to run,
append `--jobs=n` (default n=4).
If you want to create a basic coverage report for the RPC test suite, append `--coverage`.
Possible options, which apply to each individual test run:
```
-h, --help show this help message and exit
--nocleanup Leave bitcoinds and test.* datadir on exit or error
--noshutdown Don't stop bitcoinds after the test execution
--srcdir=SRCDIR Source directory containing bitcoind/bitcoin-cli
(default: ../../src)
--tmpdir=TMPDIR Root directory for datadirs
--tracerpc Print out all RPC calls as they are made
--coveragedir=COVERAGEDIR
Write tested RPC commands into this directory
```
If you set the environment variable `PYTHON_DEBUG=1` you will get some debug
output (example: `PYTHON_DEBUG=1 test/functional/test_runner.py wallet`).
A 200-block -regtest blockchain and wallets for four nodes
is created the first time a regression test is run and
is stored in the cache/ directory. Each node has 25 mature
blocks (25*50=1250 BTC) in its wallet.
After the first run, the cache/ blockchain and wallets are
copied into a temporary directory and used as the initial
test state.
If you get into a bad state, you should be able
to recover with:
```bash
rm -rf cache
killall bitcoind
```
Writing tests
=============
You are encouraged to write tests for new or existing features.
Further information about the test framework and individual functional
tests is found in [test/functional](/test/functional).
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