Enable junit.xml reporting to codecov.io (#408)

Author: Qalthos

.gitignore

@@ -43,9 +43,11 @@ htmlcov/
 .coverage
 .coverage.*
 .cache
+junit.xml
 nosetests.xml
 coverage.xml
 *.cover
+*.lcov
 *.py,cover
 .hypothesis/
 .pytest_cache/

pyproject.toml

@@ -324,6 +324,7 @@ fail-on = [
 [tool.pytest.ini_options]
 addopts = "-ra --showlocals --durations=10"
 cache_dir = "./.cache/.pytest"
+junit_family = "legacy" # see https://docs.codecov.com/docs/test-analytics
 norecursedirs = "tests/fixtures"
 testpaths = "tests"
 tmp_path_retention_policy = "failed"

tools/report-coverage

@@ -0,0 +1,6 @@
+#!/bin/bash
+set -euo pipefail
+coverage combine -q "--data-file=${TOX_ENV_DIR}/.coverage" "${TOX_ENV_DIR}"/.coverage.*
+coverage xml "--data-file=${TOX_ENV_DIR}/.coverage" -o "${TOX_ENV_DIR}/coverage.xml" --ignore-errors --fail-under=0
+COVERAGE_FILE="${TOX_ENV_DIR}/.coverage" coverage lcov --fail-under=0 --ignore-errors -q
+COVERAGE_FILE="${TOX_ENV_DIR}/.coverage" coverage report --ignore-errors

tox.ini

@@ -40,12 +40,11 @@ commands_pre =
     py{,310,311,312,313}: sh -c "npm add -D @devcontainers/cli"
 commands =
     python -c 'import pathlib; pathlib.Path("{env_site_packages_dir}/cov.pth").write_text("import coverage; coverage.process_startup()")'
-    coverage run -m pytest {posargs:-n auto}
-    coverage combine -q --data-file={env:COVERAGE_COMBINED}
-    coverage xml --data-file={env:COVERAGE_COMBINED} -o {envdir}/coverage.xml --fail-under=0
-    coverage lcov --data-file={env:COVERAGE_COMBINED} -o {toxinidir}/.cache/.coverage/lcov.info --fail-under=0
-    coverage report --data-file={env:COVERAGE_COMBINED}
+    coverage run -m pytest {posargs:-n auto --junitxml=./junit.xml}
+commands_post =
+    py{,310,311,312,313}: ./tools/report-coverage
 allowlist_externals =
+    ./tools/report-coverage
     git
     rm
     sh