mirrors/core-lightning
1
0
Fork 0
mirror of https://github.com/ElementsProject/lightning.git synced 2025-03-15 20:09:18 +01:00
Code Issues Projects Releases Wiki Activity

doc: add section about Clang code coverage

Browse source
This commit is contained in:
Matt Morehouse 2023-05-11 10:04:29 -05:00 • committed by Rusty Russell
parent d5645d28a7
commit cc71f75c4b
1 changed files with 29 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

29
doc/HACKING.md
View file

@ -290,6 +290,35 @@ It can be used to analyze the lightningd source code by running
binaries) is stored in .nccout files. You can browse it, for instance, with
a command like `nccnav lightningd/lightningd.nccout`.
Code Coverage
-------------
Code coverage can be measured using Clang's source-based instrumentation.
First, build with the instrumentation enabled:
```shell
make clean
./configure --enable-coverage CC=clang
make -j$(nproc)
```
Then run the test for which you want to measure coverage. By default, the raw
coverage profile will be written to `./default.profraw`. You can change the
output file by setting `LLVM_PROFILE_FILE`:
```shell
LLVM_PROFILE_FILE="full_channel.profraw" ./channeld/test/run-full_channel
```
Finally, generate an HTML report from the profile. We have a script to make this
easier:
```shell
./contrib/clang-coverage-report.sh channeld/test/run-full_channel \
full_channel.profraw full_channel.html
firefox full_channel.html
```
For more advanced report generation options, see the [Clang coverage
documentation](https://clang.llvm.org/docs/SourceBasedCodeCoverage.html).
Subtleties
----------