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Update contributing.md to reflect current test setup

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Martin Hořeňovský 2019-01-19 13:04:45 +01:00
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@ -42,36 +42,37 @@ functionality, you should add tests covering and showcasing it. Even if you have
only made changes to Catch internals (i.e. you implemented some performance
improvements), you should still test your changes.
This means 3 things
This means 2 things
* Compiling Catch's SelfTest project:
```
$ cd Catch2
$ cmake -Bcmake-build-debug -H. -DCATCH_BUILD_TESTING=ON
$ cd cmake-build-debug/
$ make
$ cmake -Bdebug-build -H. -DCMAKE_BUILD_TYPE=Debug
$ cmake --build debug-build
```
-- code that does not compile is evidently incorrect. Obviously, you are not
expected to have access to all compilers and platforms Catch supports, Catch's
CI pipeline will compile your code using supported compilers once you open a PR.
because code that does not compile is evidently incorrect. Obviously,
you are not expected to have access to all the compilers and platforms
supported by Catch2, but you should at least smoke test your changes
on your platform. Our CI pipeline will check your PR against most of
the supported platforms, but it takes an hour to finish -- compiling
locally takes just a few minutes.
* Running the SelfTest binary:
```
$ ./cmake-build-debug/projects/SelfTest
```
There should be no unexpected failures on simple run.
*Note: on Windows, the binary is located at `cmake-build-debug\projects\Debug\SelfTest`*
* Running Catch's approval tests:
* Running the tests via CTest:
```
$ ./scripts/approvalTests.py
$ cd debug-build
$ ctest -j 2 --output-on-failure
```
Approval tests compare current output of the SelfTest binary in various
configurations against known good output. If you've configured the SelfTest
binary with your changes to be located in any other directory than
`/cmake-build-debug/projects/SelfTest`, its path needs to be passed to the
script, like so: `$ ./scripts/approvalTests.py clang-build/SelfTest`.
The output should be fairly self-explanatory.
If you added new tests, approval tests are very likely to fail. If they
do not, it means that your changes weren't run as part of them. This
_might_ be intentional, but usually is not.
The approval tests compare current output of the SelfTest binary in various
configurations against known good outputs. The reason it fails is,
_usually_, that you've added new tests but have not yet approved the changes
they introduce. This is done with the `scripts/approve.py` script, but
before you do so, you need to check that the introduced changes are indeed
intentional.