Add cover target

It hasn't been there although coverage library has been in test reqs.

Change-Id: I40c9d398c1d0c7547bd1bd15ec82a6a1b3616e42
Signed-off-by: Takashi Kajinami <kajinamit@oss.nttdata.com>

pyproject.toml

@@ -44,6 +44,19 @@ e2 = "stevedore.tests.notfound:UnimportableExtension"
 [tool.setuptools.packages.find]
 include = ["stevedore*"]
 
+[tool.coverage.run]
+source = [
+    "stevedore"
+]
+branch = true
+omit = [
+    "stevedore/tests/*"
+]
+
+[tool.coverage.report]
+ignore_errors = true
+show_missing = true
+
 [tool.mypy]
 python_version = "3.11"
 show_column_numbers = true

test-requirements.txt

@@ -1,4 +1,4 @@
-coverage>=4.0 # Apache-2.0
+coverage>=5.0 # Apache-2.0
 stestr>=2.0.0 # Apache-2.0
 # sphinx is needed for testing the sphinxext module
 sphinx>=2.0.0 # BSD

tox.ini

@@ -35,6 +35,17 @@ deps =
 commands =
   mypy --cache-dir="{envdir}/mypy_cache" {posargs:stevedore}
 
+[testenv:cover]
+setenv =
+  PYTHON=coverage run --source stevedore --parallel-mode
+commands =
+  coverage erase
+  stestr run {posargs}
+  coverage combine
+  coverage html -d cover
+  coverage xml -o cover/coverage.xml
+  coverage report
+
 [testenv:docs]
 deps =
   -r{toxinidir}/doc/requirements.txt