Merge pull request #4374 from blueyed/doctesting

CI: doctesting uses coverage, fiy py37 on AppVeyor

.travis.yml

@@ -56,7 +56,7 @@ jobs:
     - env: TOXENV=py34
       python: '3.4'
     - env: TOXENV=py36
-    - env: TOXENV=linting,docs,doctesting PYTEST_NO_COVERAGE=1
+    - env: TOXENV=linting,docs,doctesting
 
     - stage: deploy
       python: '3.6'
@@ -89,8 +89,8 @@ after_success:
   - |
     if [[ "$PYTEST_NO_COVERAGE" != 1 ]]; then
       set -e
-      # Add first TOXENV to $PATH.
-      PATH="$PWD/.tox/${TOXENV%%,*}/bin:$PATH"
+      # Add last TOXENV to $PATH.
+      PATH="$PWD/.tox/${TOXENV##*,}/bin:$PATH"
       coverage combine
       coverage xml --ignore-errors
       coverage report -m --ignore-errors

appveyor.yml

@@ -2,7 +2,6 @@ environment:
   matrix:
   - TOXENV: "py27"
   - TOXENV: "py37"
-    PYTEST_NO_COVERAGE: "1"
   - TOXENV: "linting,docs,doctesting"
   - TOXENV: "py36"
   - TOXENV: "py35"