Python raw coverage report shows 0%

[idan-at]

Python raw coverage report shows 0%

[idan-at]

I've tried updating the filename of the config from the example above to end with .toml, didn't help

[jensenja]

Hi,

You are missing relative_files = true under your [run] section in .coveragerc. Per the documentation, this is required for Pants to work. Adding this produces the expected output in your HTML report generated by check.py in your repository:

[idan-at]

Thanks John, I totally missed the docs for that. Closing this issue.

[huonw]

Hm, I think there's something deeper going on here: Pants attempts to set that property itself, but that is seemingly not working:

pants/src/python/pants/backend/python/goals/coverage_py.py

Lines 276 to 298 in e4aaf38

	def _update_config(fc: FileContent) -> FileContent:
	if PurePath(fc.path).suffix == ".toml":
	all_config = _parse_toml_config(fc)
	tool = all_config.setdefault("tool", {})
	coverage = tool.setdefault("coverage", {})
	run = coverage.setdefault("run", {})
	run["relative_files"] = True
	if "pytest.pex/*" not in run.get("omit", []):
	run["omit"] = [*run.get("omit", []), "pytest.pex/*"]
	return FileContent(fc.path, toml.dumps(all_config).encode())
	cp = _parse_ini_config(fc)
	run_section = "coverage:run" if fc.path in ("tox.ini", "setup.cfg") else "run"
	if not cp.has_section(run_section):
	cp.add_section(run_section)
	cp.set(run_section, "relative_files", "True")
	omit_elements = cp[run_section].get("omit", "").split("\n") or ["\n"]
	if "pytest.pex/*" not in omit_elements:
	omit_elements.append("pytest.pex/*")
	cp.set(run_section, "omit", "\n".join(omit_elements))
	stream = StringIO()
	cp.write(stream)
	return FileContent(fc.path, stream.getvalue().encode())

As such, reopening.