Move coverage config to pyproject.toml

Author: sbidoul

news/12538.process.rst

@@ -0,0 +1 @@
+Move remaining pip development tools configurations to ``pyproject.toml``.

pyproject.toml

@@ -261,3 +261,45 @@ markers = [
     "git: VCS: git",
     "search: tests for 'pip search'",
 ]
+
+######################################################################################
+# coverage
+#
+
+[tool.coverage.run]
+branch = true
+# Do not gather coverage for vendored libraries.
+omit = "*/_vendor/*"
+# Centralized absolute file prefix for coverage files.
+data_file = "${COVERAGE_OUTPUT_DIR}/.coverage"
+# By default, each covered process will try to truncate and then write to
+# `data_file`, but with `parallel`, they will write to separate files suffixed
+# with hostname, pid, and a timestamp.
+parallel = true
+# If not set, then at the termination of each worker (when using pytest-xdist),
+# the following is traced: "Coverage.py warning: Module pip was previously
+# imported, but not measured (module-not-measured)"
+disable_warnings = "module-not-measured"
+
+[tool.coverage.paths]
+# We intentionally use "source0" here because pytest-cov unconditionally sets
+# "source" after loading the config.
+source0 = [
+    # The primary source code path which other paths will be combined into.
+    "src/pip/",
+    # Unit test source directory e.g.
+    # `.tox/coverage-py3/lib/pythonX.Y/site-packages/pip/...`
+    "*/site-packages/pip/",
+    # Functional test virtual environment directories, which look like
+    # `tmpdir/pip0/pip/src/pip/...`
+    "*/pip/src/pip/",
+]
+
+[tool.coverage.report]
+exclude_lines = [
+    # We must re-state the default because the `exclude_lines` option overrides
+    # it.
+    "pragma: no cover",
+    # This excludes typing-specific code, which will be validated by mypy anyway.
+    "if TYPE_CHECKING",
+]