test(coverage): make coverage consistent and reproducible

.github/workflows/ci.yml

@@ -66,7 +66,7 @@ jobs:
           python -m pip install poetry poetry-dynamic-versioning
           poetry install --with dev,docs -v
       - name: Run pytest
-        run: poetry run poe test --cov=./ --cov-report=xml -ra .
+        run: poetry run poe coverage
       - name: Upload coverage to Codecov
         continue-on-error: true
         uses: codecov/codecov-action@v3

.gitignore

@@ -55,6 +55,7 @@ pip-wheel-metadata
 # Tests artifacts
 .coverage*
 htmlcov/
+coverage.xml
 
 # macOS
 .DS_Store

pyproject.toml

@@ -81,8 +81,8 @@ script = "devtasks:clean"
 help = "remove build/python artifacts"
 
 [tool.poe.tasks.coverage]
-cmd = "pytest --cov-report html --cov copier copier tests"
-help = "generate an HTML report of the coverage"
+cmd = "pytest -p pytest_cov --cov --cov-report=html --cov-report=xml --cov-append"
+help = "generate an HTML+XML report of the coverage"
 
 [tool.poe.tasks.dev-setup]
 script = "devtasks:dev_setup"
@@ -128,10 +128,23 @@ add_ignore = ["D105", "D107"]
 
 [tool.pytest.ini_options]
 addopts = "-n auto -ra"
+testpaths = [
+    "copier/",
+    "tests/",
+]
 markers = [
     "impure: needs network or is not 100% reproducible"
 ]
 
+[tool.coverage.run]
+source = [
+    "copier/",
+    "tests/",
+]
+omit = [
+    "*/demo*/*",
+]
+
 [tool.commitizen]
 annotated_tag = true
 changelog_incremental = true