Merge pull request #530 from moreati/cover-us

 Aggregate code coverage data across all tox runs

docs/changelog.rst

@@ -446,12 +446,16 @@ Core Library
 * `#524 <https://github.com/dw/mitogen/issues/524>` : Python 3.6+ emitted a
   :class:`DeprecationWarning` for :func:`mitogen.utils.run_with_router`.
 
+* `#529 <https://github.com/dw/mitogen/issues/529>` : Code coverage of the
+  test suite was not measured across all Python versions.
+
 
 Thanks!
 ~~~~~~~
 
 Mitogen would not be possible without the support of users. A huge thanks for
 bug reports, testing, features and fixes in this release contributed by
+`Alex Willmer <https://github.com/moreati>`_,
 `Andreas Krüger <https://github.com/woopstar>`_,
 `Anton Stroganov <https://github.com/Aeon>`_,
 `Berend De Schouwer <https://github.com/berenddeschouwer>`_,

run_tests

@@ -24,16 +24,22 @@ echo
 # Don't use errexit, so coverage report is still generated when tests fail
 set -o pipefail
 
+NOCOVERAGE="${NOCOVERAGE:-}"
+NOCOVERAGE_ERASE="${NOCOVERAGE_ERASE:-$NOCOVERAGE}"
+NOCOVERAGE_REPORT="${NOCOVERAGE_REPORT:-$NOCOVERAGE}"
+
 if [ ! "$UNIT2" ]; then
     UNIT2="$(which unit2)"
 fi
 
-[ "$NOCOVERAGE" ] || coverage erase
+if [ ! "$NOCOVERAGE_ERASE" ]; then
+    coverage erase
+fi
 
 # First run overwites coverage output.
 [ "$SKIP_MITOGEN" ] || {
     if [ ! "$NOCOVERAGE" ]; then
-        coverage run "${UNIT2}" discover \
+        coverage run -a "${UNIT2}" discover \
             --start-directory "tests" \
             --pattern '*_test.py' \
             "$@"
@@ -59,16 +65,18 @@ fi
             --pattern '*_test.py' \
             "$@"
     else
-        coverage run -a "${UNIT2}" discover \
+        "${UNIT2}" discover \
             --start-directory "tests/ansible" \
             --pattern '*_test.py' \
             "$@"
     fi
     ANSIBLE_TEST_STATUS=$?
 }
 
-[ "$NOCOVERAGE" ] || coverage html
-[ "$NOCOVERAGE" ] || echo coverage report is at "file://$(pwd)/htmlcov/index.html"
+if [ ! "$NOCOVERAGE_REPORT" ]; then
+    coverage html
+    echo "coverage report is at file://$(pwd)/htmlcov/index.html"
+fi
 
 # Exit with a non-zero status if any test run did so
 exit "$(max $MITOGEN_TEST_STATUS $ANSIBLE_TEST_STATUS)"

tox.ini

@@ -1,10 +1,12 @@
 [tox]
 envlist =
+    init,
     py26,
     py27,
     py35,
     py36,
     py37,
+    report,
 
 [testenv]
 usedevelop = True
@@ -16,6 +18,24 @@ commands =
     {posargs:bash run_tests}
 whitelist_externals =
     bash
+setenv =
+    NOCOVERAGE_ERASE = 1
+    NOCOVERAGE_REPORT = 1
+
+[testenv:init]
+commands =
+    coverage erase
+deps =
+    coverage
+
+[testenv:report]
+commands =
+    coverage html
+    echo "coverage report is at file://{toxinidir}/htmlcov/index.html"
+deps =
+    coverage
+whitelist_externals =
+    echo
 
 [testenv:docs]
 basepython = python