docs: add code coverage documentation to test README

Signed-off-by: Anand Krishnan PK <anandkrishnanpk20031@gmail.com>

Author: Anand-Krishnan-PK

doc/test/README.md

@@ -174,6 +174,24 @@ You can also use all the pytest functionality to run groups of tests. For exampl
 ```console
 pytest -v test/test_checkers.py -k python
 ```
+## Running Code Coverage
+
+The project uses `pytest-cov` for code coverage measurement.
+
+To run the test suite with coverage enabled:
+
+```console
+pytest --cov
+```
+
+To generate a coverage report in XML format:
+
+```console
+pytest --cov --cov-report=xml
+```
+
+Coverage settings are configured in `pyproject.toml`. The coverage configuration measures both the `cve_bin_tool` and `test` packages and includes branch coverage.
+
 
 ## Known issues