e.g. `src/test/test-path-util.c` contains tests for any functions in
`src/basic/path-util.c`. If adding a new source file, consider adding a matching
test executable. For features at a higher level, tests in `src/test/` are very
-strongly recommended. If that is no possible, integration tests in `test/` are
+strongly recommended. If that is not possible, integration tests in `test/` are
encouraged.
Please also have a look at our list of [code quality tools](CODE_QUALITY.md) we have setup for systemd,