d8dfcea5d9
bee88b8c5887e6beb75f26f0db97888a48fa7e7c tests: have coins simulation test also use CCoinsViewDB (James O'Beirne)
Pull request description:
Before this change, the coins simulation test uses a base view of type
CCoinsViewTest, which has no relevance outside of the unittest suite. Might as
well reuse this testcase with a more realistic configuration that has
CCoinsViewDB (i.e. in-memory leveldb) at the bottom of the view structure.
This adds explicit use of CCoinsViewDB in the unittest suite.
#### Before change
```
./src/test/test_bitcoin --run_test=coins_tests --catch_system_errors=no 21.99s user 0.04s system 99% cpu 22.057 total
```
#### After change
```
./src/test/test_bitcoin --run_test=coins_tests --catch_system_errors=no 78.80s user 0.04s system 100% cpu 1:18.82 total
```
ACKs for top commit:
ryanofsky:
Code review ACK bee88b8c5887e6beb75f26f0db97888a48fa7e7c
Tree-SHA512: 75296b2bcbae2f46e780489aafb032592544a15c384d569d016005692fe79fe60d7f05857cf25cc7b0f9ab1c53b47886a6c71cca074a03fb9afec30e1f376858
Unit tests
The sources in this directory are unit test cases. Boost includes a unit testing framework, and since Bitcoin Core already uses Boost, it makes sense to simply use this framework rather than require developers to configure some other framework (we want as few impediments to creating unit tests as possible).
The build system is set up to compile an executable called test_bitcoin
that runs all of the unit tests. The main source file for the test library is found in
util/setup_common.cpp.
Compiling/running unit tests
Unit tests will be automatically compiled if dependencies were met in ./configure
and tests weren't explicitly disabled.
After configuring, they can be run with make check.
To run the unit tests manually, launch src/test/test_bitcoin. To recompile
after a test file was modified, run make and then run the test again. If you
modify a non-test file, use make -C src/test to recompile only what's needed
to run the unit tests.
To add more unit tests, add BOOST_AUTO_TEST_CASE functions to the existing
.cpp files in the test/ directory or add new .cpp files that
implement new BOOST_AUTO_TEST_SUITE sections.
To run the GUI unit tests manually, launch src/qt/test/test_bitcoin-qt
To add more GUI unit tests, add them to the src/qt/test/ directory and
the src/qt/test/test_main.cpp file.
Running individual tests
test_bitcoin has some built-in command-line arguments; for
example, to run just the getarg_tests verbosely:
test_bitcoin --log_level=all --run_test=getarg_tests -- DEBUG_LOG_OUT
log_level controls the verbosity of the test framework, which logs when a
test case is entered, for example. The DEBUG_LOG_OUT after the two dashes
redirects the debug log, which would normally go to a file in the test datadir
(BasicTestingSetup::m_path_root), to the standard terminal output.
... or to run just the doubledash test:
test_bitcoin --run_test=getarg_tests/doubledash
Run test_bitcoin --help for the full list.
Adding test cases
To add a new unit test file to our test suite you need
to add the file to src/Makefile.test.include. The pattern is to create
one test file for each class or source file for which you want to create
unit tests. The file naming convention is <source_filename>_tests.cpp
and such files should wrap their tests in a test suite
called <source_filename>_tests. For an example of this pattern,
see uint256_tests.cpp.
Logging and debugging in unit tests
make check will write to a log file foo_tests.cpp.log and display this file
on failure. For running individual tests verbosely, refer to the section
above.
To write to logs from unit tests you need to use specific message methods
provided by Boost. The simplest is BOOST_TEST_MESSAGE.
For debugging you can launch the test_bitcoin executable with gdbor lldb and
start debugging, just like you would with any other program:
gdb src/test/test_bitcoin