tox.ini

[tox]
isolated_build = true
# NOTE: v4.29.0 is the first one to implement the `tox_extend_envs`
# NOTE: lifecycle hook. But the initial version had a bug fixed in
# NOTE: the following version 4.30.0.
#
# Refs:
# * https://github.com/tox-dev/tox/issues/3510
# * https://github.com/tox-dev/tox/pull/3591
# * https://github.com/tox-dev/tox/pull/3598
minversion = 4.30.0


[python-cli-options]
byte-warnings = -b
byte-errors = -bb
max-isolation = -E -s -I
some-isolation = -E -s
warnings-to-errors = -Werror


[testenv]
description = Run pytest under {envpython}
deps =
  covdefaults
  coverage
  # NOTE: `tox`'s `[testing]` extra provides `devpi-process` / `pytest`
  # NOTE: (needed by the `tox.pytest` plugin) starting from v4.54.0. Under
  # NOTE: older `tox`, list those directly.
  # Ref: https://github.com/tox-dev/tox/issues/3938
  devpi-process
  pytest
  pytest-cov
  pytest-xdist
  tox [testing]
commands =
  {envpython} \
    {[python-cli-options]byte-errors} \
    {[python-cli-options]max-isolation} \
    {[python-cli-options]warnings-to-errors} \
    -m pytest \
      {tty:--color=yes} \
      {posargs:--cov-report=html:{envtmpdir}{/}htmlcov{/}}
commands_post =
  -{envpython} \
    {[python-cli-options]byte-errors} \
    {[python-cli-options]max-isolation} \
    {[python-cli-options]warnings-to-errors} \
    -c \
      'import atexit, os, sys; \
      os.getenv("GITHUB_ACTIONS") == "true" or sys.exit(); \
      import coverage; \
      gh_summary_fd = open(\
        os.environ["GITHUB_STEP_SUMMARY"], encoding="utf-8", mode="a",\
      ); \
      atexit.register(gh_summary_fd.close); \
      cov = coverage.Coverage(); \
      cov.load(); \
      cov.report(file=gh_summary_fd, output_format="markdown")'
  # Print out the output coverage dir and a way to serve html:
  {envpython} \
    {[python-cli-options]byte-errors} \
    {[python-cli-options]max-isolation} \
    {[python-cli-options]warnings-to-errors} \
    -c\
      'import pathlib, shlex, sys; \
      cov_html_report_arg_prefix = "--cov-report=html:"; \
      cov_html_reports = [\
        arg[len(cov_html_report_arg_prefix):] for arg in sys.argv \
        if arg.startswith(cov_html_report_arg_prefix)\
      ]; \
      cov_html_reports or sys.exit(); \
      cov_html_report_dir = pathlib.Path(cov_html_reports[-1]); \
      index_file = cov_html_report_dir / "index.html";\
      index_file.exists() or sys.exit(); \
      html_url = f"file://\{index_file\}";\
      browse_cmd = shlex.join(("python3", "-Im", "webbrowser", html_url)); \
      serve_cmd = shlex.join((\
        "python3", "-Im", "http.server", \
        "--directory", str(cov_html_report_dir), "0", \
      )); \
      print(f"\nTo open the HTML coverage report, run\n\n\
      \t\{browse_cmd !s\}\n");\
      print(f"To serve \
      the HTML coverage report with a local web server, use\n\n\
      \t\{serve_cmd !s\}\n")' \
    {posargs:--cov-report=html:{envtmpdir}{/}htmlcov{/}}
package = editable
pass_env =
  CI
  GITHUB_*
  SSH_AUTH_SOCK
  TERM
set_env =
  COVERAGE_PROCESS_START = {toxinidir}{/}.coveragerc
wheel_build_env = .pkg


[testenv:cleanup-dists]
description =
  Wipe the the dist{/} folder
deps =
commands_pre =
commands =
  {envpython} \
    {[python-cli-options]byte-errors} \
    {[python-cli-options]max-isolation} \
    {[python-cli-options]warnings-to-errors} \
    -c \
      'import os, shutil, sys; \
      dists_dir = "{toxinidir}{/}dist{/}"; \
      shutil.rmtree(dists_dir, ignore_errors=True); \
      sys.exit(os.path.exists(dists_dir))'
commands_post =
package = skip


[testenv:build-dists]
description =
  Build dists with {basepython} and put them into the dist{/} folder
depends =
  cleanup-dists
deps =
  build
commands =
  {envpython} \
    {[python-cli-options]byte-errors} \
    {[python-cli-options]max-isolation} \
    {[python-cli-options]warnings-to-errors} \
    -m build \
      {posargs:}
commands_post =
package = skip


[testenv:metadata-validation]
description =
  Verify that dists under the `dist{/}` dir
  have valid metadata
depends =
  build-dists
deps =
  setuptools-scm
  twine
commands_pre =
  {envpython} \
    {[python-cli-options]byte-errors} \
    {[python-cli-options]max-isolation} \
    {[python-cli-options]warnings-to-errors} \
    '-Wdefault{:}git archive did not support describe output\
      {:}UserWarning{:}setuptools_scm.git' \
    '-Wdefault{:}unprocessed git archival found\
      {:}UserWarning{:}setuptools_scm.git' \
    -m setuptools_scm \
      ls
commands =
  {envpython} \
    {[python-cli-options]byte-errors} \
    {[python-cli-options]max-isolation} \
    {[python-cli-options]warnings-to-errors} \
    -m twine \
      check \
      --strict \
      dist{/}*
commands_post =
package = skip


[testenv:pre-commit]
description =
  Run the quality checks under {basepython}; run as
  `SKIP=check-id1,check-id2 tox run -e pre-commit` to instruct the
  underlying `pre-commit` invocation to skip said checks; use
  `tox run -e pre-commit -- check-id1 --all-files` to select checks
  matching IDs aliases{:} `tox run -e pre-commit -- mypy --all-files`
  will run all MyPy invocations across supported Python versions, but
  `tox run -e pre-commit -- mypy-py313 --all-files` runs one.
commands =
  {envpython} \
    {[python-cli-options]byte-errors} \
    {[python-cli-options]max-isolation} \
    {[python-cli-options]warnings-to-errors} \
    -m pre_commit \
      run \
      --color=always \
      --show-diff-on-failure \
      {posargs:--all-files}
commands_post =
  {envpython} \
    {[python-cli-options]byte-errors} \
    {[python-cli-options]max-isolation} \
    {[python-cli-options]warnings-to-errors} \
    -c \
      'import os, pathlib, sys; \
      os.getenv("GITHUB_ACTIONS") == "true" or sys.exit(); \
      project_root_path = pathlib.Path(r"{toxinidir}"); \
      test_results_dir = pathlib.Path(r"{temp_dir}") / ".test-results"; \
      coverage_result_files = " ".join(\
        str(xml_path.relative_to(project_root_path)) \
        for xml_path in test_results_dir.glob("mypy--py-*{/}cobertura.xml")\
      ); \
      gh_output_fd = open(\
        os.environ["GITHUB_OUTPUT"], encoding="utf-8", mode="a",\
      ); \
      print(\
        f"coveralls-report-files={coverage_result_files !s}", \
        file=gh_output_fd, \
      ); \
      print("coveralls-flags=MyPy", file=gh_output_fd); \
      gh_output_fd.close()'
  {envpython} \
    {[python-cli-options]byte-errors} \
    {[python-cli-options]max-isolation} \
    {[python-cli-options]warnings-to-errors} \
    -c \
      'import itertools, os, pathlib, shlex, sys; \
      os.getenv("GITHUB_ACTIONS") == "true" or sys.exit(); \
      test_results_dir = pathlib.Path(r"{temp_dir}") / ".test-results"; \
      text_and_json_reports = itertools.chain( \
        test_results_dir.glob("mypy--py-*{/}*.json"), \
        test_results_dir.glob("mypy--py-*{/}*.txt"), \
      ); \
      report_contents = { \
        report{:} report.read_text() \
        for report in text_and_json_reports \
      }; \
      reports_summary_text_blob = "\n\n".join( \
        f"\N\{NUMBER SIGN\}\N\{NUMBER SIGN\} {report_path.parent.name}{:} " \
        f"`{report_path.name}`\n\n" \
        f"```{report_path.suffix[1:]}\n{report_text}\n```\n" \
        for report_path, report_text in report_contents.items() \
      ); \
      gh_summary_fd = open( \
        os.environ["GITHUB_STEP_SUMMARY"], encoding="utf-8", mode="a", \
      ); \
      print(reports_summary_text_blob, file=gh_summary_fd); \
      gh_summary_fd.close()'
  # Print out the HTML coverage report locations for local dev:
  {envpython} \
    {[python-cli-options]byte-errors} \
    {[python-cli-options]max-isolation} \
    {[python-cli-options]warnings-to-errors} \
    -c\
      'import os, pathlib, sys; \
      os.getenv("GITHUB_ACTIONS") == "true" and sys.exit(); \
      len(sys.argv) >= 3 and all(\
        arg != "mypy" and not arg.startswith("mypy-py3") \
        for arg in sys.argv \
      ) and sys.exit(); \
      project_root_path = pathlib.Path(r"{toxinidir}"); \
      test_results_dir = pathlib.Path(r"{temp_dir}") / ".test-results"; \
      coverage_html_report_urls = [\
        f"file://\{xml_path !s\}" \
        for xml_path in test_results_dir.glob("mypy--py-*{/}index.html")\
      ]; \
      coverage_html_report_open_cmds = [\
      f"python3 -Im webbrowser \N\{QUOTATION MARK\}\{html_url !s\}\N\{QUOTATION MARK\}" \
      for html_url in coverage_html_report_urls\
      ]; \
      coverage_html_report_open_cmds_blob = "\n\n\t".join(\
        coverage_html_report_open_cmds,\
      ); \
      print(\
        f"\nTo open the HTML coverage reports, run\n\n\
        \t\{coverage_html_report_open_cmds_blob !s\}\n"\
      ); \
      print(\
        f"[*] Find rest of JSON and text reports, are in the same directories."\
      )\
      ' \
    {posargs:--all-files}

  # Print out the advice on how to install pre-commit into Git:
  -{envpython} \
    {[python-cli-options]byte-errors} \
    {[python-cli-options]max-isolation} \
    {[python-cli-options]warnings-to-errors} \
    -c \
      'cmd = "{envpython} -m pre_commit install"; \
      scr_width = len(cmd) + 10; \
      sep = "=" * scr_width; \
      cmd_str = "    $ \{cmd\}";' \
      'print(f"\n\{sep\}\nTo install pre-commit hooks into the Git repo, run:\
      \n\n\{cmd_str\}\n\n\{sep\}\n")'
deps =
  pre-commit
package = skip
pass_env =
  {[testenv]pass_env}
  SKIP  # set this variable