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RegressionTests

When you think your branch is ready for merging, there are two tests you can run to make sure that your code sticks to our coding style, and to test for a bunch of possible regression bugs.

Codecheck

We have codecheck rules that will help you stick to our coding style guidelines. These are run automatically whenever you compile a debug build, but the messages are hard to see sometimes. However, you can run the checks manually as well.

Running Codecheck Manually

cd build && make codecheck

If you see lots of "see_if_codecheck_needs_to_run_" messages, it will be easier to run:

cmake/codecheck/CodeCheck.py src/* | grep -v "src/third_party"

Note that this second command won't check the CMakeLists.txt files.

Testing Codecheck Rules

The codecheck rules themselves can also be tested. Run:

./cmake/codecheck/run_tests.py

Test Scenarios

Some tests can be run automatically while compiling debug builds, but not all of them. We have some automated scenarios that will check for regression bugs. Running the complete test suite will keep opening and closing an instance of Widelands and grabbing your mouse, so make sure you're not doing anything else at the time.

Full Test Suite

You can run the complete test suite with

./regression_test.py -b ./widelands

Single Test Scenario

By Filename

If you only wish to run part of the testsuite, you can filter with regex for the filename, like this:

./regression_test.py -b ./widelands -r=portdock

This will run all test(s) (*lua files) with a keyword (portdock in this example) in their file path. You can of course use the entire filename to run just one test. Have a look at the test directory for which tests are available.

With Direct Console Output

While debugging something specific or if you want to run a scenario from within a debugger, you can also use a different command to get the output directly on the console. Note that this won't set up the complete testing environment, so you will always need to use one of the above commands to verify when you're done. You will need to specify both the scenario map and the specific test script:

./widelands --datadir=data --datadir_for_testing=. -scenario=test/maps/ship_transportation.wmf --script=test/maps/ship_transportation.wmf/scripting/test_rip_second_port_with_worker_in_portdock.lua

Note that lua_testsuite.wmf needs special treatment - run it with:

./widelands --scenario=test/maps/lua_testsuite.wmf --datadir_for_testing=.

Help

You can print help to the console with:

./regression_test.py -h
./regression_test.py --help

Required Python Version

Also note that CodeCheck.py and regression_test.py require python 2.7 or 3.4.x (tested with 3.4.4). So, if you get errors, check your version and then try to force the correct version like this:

python2.7 ./regression_test.py -b ./widelands
python3.4 ./regression_test.py -b ./widelands

providing you are using linux or similar system. Chances are high that python2.7 is already installed on your box, if not use your package manager to install it.