Update to pytest >= 7.0.0 and use importlib_metadata to get versions (#177)

* Update pytest dependency to > 7.0.0

pyproject.toml:
Update the pytest dependency to >= 7.0.0, which obsoletes the use of
pytest-pythonpath.

setup.cfg:
Change the python_paths pytest configuration option to pythonpath, as
that is what is used with pytest >= 7.0.0."

* Update poetry lock file

poetry.lock:
Update poetry lock file after updating pytest version requirement and
removing pytest-pythonpath.

* Add importlib_metadata for python < 3.10

pyproject.toml:
Using importlib_metadata it is possible to derive versions of packages.
To make use of it with python < 3.10 the package importlib_metadata has
to be added (conditionally).

* Update poetry lock after adding importlib_metadata

poetry.lock:
Update poetry lock after adding importlib_metadata conditionally.

* Do not warn about unused ignores with mypy

setup.cfg:
Disable the warning for unused ignores in mypy as there seems to be an
issue between versions of mypy about what is considered an "unused
ignore".

* Use importlib_metadata to derive package versions

coverage_conditional_plugin/__init__.py:
Use importlib_metadata to derive package versions, instead of relying on
pkg_resources (which implicitly dragged in setuptools).

* Disable WPS440 and WPS433 for plugin

setup.cfg:
Disable WPS440 and WPS433 for plugin as they are requirements for the
conditional import of importlib_metadata.

Author: dvzrv

coverage_conditional_plugin/__init__.py

@@ -4,7 +4,10 @@
 from importlib import import_module
 from typing import ClassVar, Dict, Iterable, Optional, Tuple, Union
 
-import pkg_resources
+try:  # pragma: no cover
+    from importlib.metadata import version as metadata_version
+except ImportError:  # pragma: no cover
+    from importlib_metadata import version as metadata_version  # type: ignore
 from coverage import CoveragePlugin
 from coverage.config import CoverageConfig
 from packaging import version
@@ -129,9 +132,7 @@ def _package_version(
 
     Returns parsed varsion to be easily worked with.
     """
-    return version.parse(
-        pkg_resources.get_distribution(package).version,
-    ).release
+    return version.parse(metadata_version(package)).release
 
 
 def coverage_init(reg, options) -> None:

poetry.lock

@@ -37,6 +37,7 @@ python = "^3.7"
 
 coverage = ">=5,<7"
 packaging = ">=20.4"
+importlib_metadata = { version = "*", python = "<3.10" }
 
 [tool.poetry.group.test.dependencies]
 mypy = "^0.971"
@@ -48,10 +49,9 @@ nitpick = "^0.29"
 
 safety = "^2.1"
 
-pytest = "^6.2"
+pytest = "^7.0"
 pytest-cov = "^3.0"
 pytest-randomly = "^3.10"
-pytest-pythonpath = "^0.7"
 
 
 [build-system]

pyproject.toml

@@ -31,6 +31,9 @@ extend-exclude =
 
 # Ignoring some errors in some files:
 per-file-ignores =
+  # we need nested import and block variable overlap for conditional
+  # importlib_metadata import
+  coverage_conditional_plugin/__init__.py: WPS433, WPS440
   # Disable `test_project` complexity checks:
   test_project/example.py: WPS202
   # Enable `assert` keyword and magic numbers for tests:
@@ -53,7 +56,7 @@ norecursedirs = *.egg .eggs dist build docs .tox .git __pycache__
 
 # PYTHONPATH configuration:
 # https://github.com/bigsassy/pytest-pythonpath
-python_paths = ./test_project
+pythonpath = ./test_project
 
 # Strict `@xfail` by default:
 xfail_strict = true
@@ -91,3 +94,7 @@ warn_unused_ignores = true
 warn_redundant_casts = true
 warn_unused_configs = true
 warn_unreachable = true
+
+[mypy-coverage_conditional_plugin]
+# We allow unused `ignore` comments, because we cannot sync it between versions:
+warn_unused_ignores = false