test: add tests to have a full coverage

[mdevolde]

test: add tests to have a full coverage

Why the pull request was made

To have a full coverage of the library, and easily detect bugs on future changes.

Summary of changes

• Refactor tests structure in benchmark, integration, property, unit.
• Add benchmarks tests.
• Add pytest-benchmark and hypothesis as test dependencies.
• Add tests unit, property and bench tests.
• Refactor existing tests.
• Remove useless tests.

Screenshots (if appropriate):

Not applicable.

How has this been tested?

Applied tests.

Resources

Not applicable.

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation update (changes to documentation only)
• Refactor / code style update (non-breaking change that improves code structure or readability)
• Tests / CI improvement (adding or updating tests or CI configuration only)
• Chore / maintenance (non-breaking change that does not affect functionality, such as updating dependencies or fixing typos)
• Other (please describe):

Checklist

• Followed the project's contributing guidelines.
• Updated any relevant tests.
• Updated any relevant documentation.
• Added comments to your code where necessary.
• Formatted your code, run the linters, checked types and tests.
• Added your changes to the CHANGELOG file, if applicable.

[codecov-commenter]

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Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 99.88%. Comparing base (c13dbb5) to head (644bfc8).
❗ Your organization needs to install the Codecov GitHub app to enable full functionality.

Additional details and impacted files

@@             Coverage Diff             @@
##           master     #207       +/-   ##
===========================================
+ Coverage   80.67%   99.88%   +19.20%     
===========================================
  Files          13       13               
  Lines        1770     1699       -71     
===========================================
+ Hits         1428     1697      +269     
+ Misses        342        2      -340     

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[Copilot]

Pull request overview

This PR restructures and significantly expands the test suite to drive higher coverage and make regressions easier to catch, while also adding new testing/benchmarking dependencies and a few small coverage-annotation changes in the library code.

Changes:

• Reorganized tests into unit/, integration/, property/, and benchmarks/ suites with collection markers.
• Added extensive new unit + property-based coverage for core modules (server, download, safe_zip, config, match, language tag, CLI).
• Added test tooling/dependencies (hypothesis, pytest-benchmark) and minor CI/dev-experience tweaks (markers, --basetemp, clean target).

Reviewed changes

Copilot reviewed 45 out of 47 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
uv.lock	Locks new test dependencies (hypothesis, pytest-benchmark) and their transitive deps.
pyproject.toml	Adds new test deps; expands Ruff per-file ignores; adds mypy override for Hypothesis-heavy tests.
pytest.ini	Adds markers and sets project-local --basetemp for tmp dirs.
.github/workflows/test.yml	CI matrix tweak (Python 3.15 beta version bump); continues running pytest in CI.
Makefile	Adds clean target; makes publish run clean first; updates usage output.
make.bat	Adds clean target and wires publish through it; updates usage output.
.gitignore	Ignores .pytest_tmp/ (the new --basetemp directory).
src/language_tool_python/server.py	Adds coverage annotation for an effectively-unreachable branch in response decoding.
src/language_tool_python/language_tag.py	Enhances docstring parameter documentation.
src/language_tool_python/download_lt.py	Adds pragma: no cover to abstract/unreachable paths; annotates some TOCTOU-only branches.
src/language_tool_python/config_file.py	Adds pragma: no cover and explanation for hard-to-create path types.
src/language_tool_python/_internals/safe_zip.py	Annotates TOCTOU/defensive branches and refines coverage pragmas.
src/language_tool_python/_internals/compat.py	Marks version-specific fallback imports as not coverable in the coverage environment.
src/language_tool_python/main.py	Adds defensive coverage pragmas and annotates main guard.
tests/unit/init.py	Declares unit test package.
tests/unit/conftest.py	Automatically applies the unit marker to tests under tests/unit/.
tests/unit/test_api_types.py	Adds unit tests for API response type-guard helpers.
tests/unit/test_cli_args.py	Adds focused unit tests for CLI argument parsing edge cases.
tests/unit/test_cli_unit.py	Adds unit tests for CLI helpers (get_text, stdin handling, main status aggregation, etc.).
tests/unit/test_config_unit.py	Adds unit tests for config encoding/validation and LanguageToolConfig behavior.
tests/unit/test_config_validation.py	Adds targeted unit tests for injection/backslash protections in config serialization.
tests/unit/test_download.py	Refactors download tests to avoid module reloads; adds more HTTP error-path tests.
tests/unit/test_download_unit.py	Adds unit-level tests for download_lt.py helpers and version logic without network/Java.
tests/unit/test_internals_utils.py	Adds unit tests for internal helpers like env parsing, locale fallback, psutil killing, version parsing.
tests/unit/test_language_tag.py	Adds unit tests for LanguageTag normalization, fallback behavior, and comparisons.
tests/unit/test_match.py	Adds unit tests for Match construction, formatting, comparison, iteration, and helper functions.
tests/unit/test_safe_zip.py	Refactors to tmp_path; adds more fine-grained safe-zip unit tests (incl. internal helpers).
tests/unit/test_server_unit.py	Adds extensive isolated unit tests for server logic (no Java/network required).
tests/unit/test_utils.py	Adds unit tests for classify_matches, correct, and TextStatus enum values.
tests/test_api_public.py (deleted)	Removes old public-API test; superseded by tests/integration/test_api_public.py.
tests/property/init.py	Declares property test package.
tests/property/conftest.py	Automatically applies the property marker to tests under tests/property/.
tests/property/test_prop_config.py	Adds Hypothesis tests for config invariants and schema behaviors.
tests/property/test_prop_language_tag.py	Adds Hypothesis tests for LanguageTag normalization/ordering invariants.
tests/property/test_prop_safe_zip.py	Adds Hypothesis adversarial tests for path traversal protections in safe zip handling.
tests/property/test_prop_utils.py	Adds Hypothesis tests for utility-function invariants (correct, classify_matches).
tests/integration/init.py	Declares integration test package.
tests/integration/conftest.py	Automatically applies the integration marker to tests under tests/integration/.
tests/integration/test_api_public.py	Adds more stable public API integration assertions (field-level vs full snapshot).
tests/integration/test_cli.py	Refactors CLI integration tests and helpers; uses public properties for host/port.
tests/integration/test_config.py	Improves caching timing test robustness; moves invalid-language test into integration.
tests/integration/test_download.py	Adds integration tests for real network download/version behaviors.
tests/integration/test_match.py	Updates integration match expectations to be less brittle re: typography.
tests/integration/test_server_local.py	Improves cleanup reliability and uses public accessors (host, port).
tests/benchmarks/init.py	Declares benchmarks package.
tests/benchmarks/conftest.py	Automatically applies the perf marker to tests under tests/benchmarks/.
tests/benchmarks/test_bench_check.py	Adds benchmark tests using pytest-benchmark for check/correct performance.

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