make a "future" toxenv

.azure-pipelines.yml

@@ -65,6 +65,8 @@ jobs:
 # Use a container since Azure Pipelines may not have the bleeding-edge Python RC
 - job: FlaskOnLatest
   pool: { vmImage: ubuntu-latest }
+  variables:
+    TOXENV: 'future'
   container: python:rc-stretch
   steps:
   - script: |
@@ -73,6 +75,5 @@ jobs:
     displayName: 'Install tox'
   
   # don't fail the build if this doesn't work!
-  - script: |
-      tox --ignore-outcome=true
+  - script: tox
     displayName: 'Run tox'

tox.ini

@@ -37,6 +37,15 @@ commands =
     # pytest-cov doesn't seem to play nice with -p
     coverage run -p -m pytest --junitxml=test-results.xml tests examples
 
+[testenv:future]
+ignore_outcome = true
+
+commands =
+    pip install -q -e examples/tutorial[test]
+    pip install -q -e examples/javascript[test]
+
+    coverage run -p -m pytest tests examples
+
 [testenv:docs-html]
 deps =
     -r docs/requirements.txt
@@ -51,7 +60,7 @@ commands =
     coverage html
 
 [testenv:codecov]
-passenv = CI TRAVIS TRAVIS_* APPVEYOR APPVEYOR_*
+passenv = CI TRAVIS TRAVIS_* APPVEYOR APPVEYOR_* BUILD_* SYSTEM_* AGENT_* TF_BUILD
 deps = codecov
 skip_install = true
 commands =