Update test framework: fix run_tests.py to support all test files, add auto-import-check for test files

node_modules/digest-fetch/.travis.yml

@@ -0,0 +1,25 @@
+language: node_js
+node_js:
+  - node
+  - lts/*
+sudo: false
+cache:
+  directories:
+    - node_modules
+before_install:
+  # Skip updating shrinkwrap / lock
+  - "npm config set shrinkwrap false"
+  # Setup Node.js version-specific dependencies
+  # - "test $TRAVIS_NODE_VERSION != '0.8' || npm rm --save-dev istanbul"
+  # - "test $(echo $TRAVIS_NODE_VERSION | cut -d. -f1) -ge 4 || npm rm --save-dev eslint eslint-plugin-markdown"
+  # Update Node.js modules
+  - "test ! -d node_modules || npm prune"
+  - "test ! -d node_modules || npm rebuild"
+script:
+  # Run test script, depending on istanbul install
+  - "test ! -z $(npm -ps ls istanbul) || npm test"
+  - "test   -z $(npm -ps ls istanbul) || npm run-script test-travis"
+  # - "test   -z $(npm -ps ls eslint) || npm run-script lint"
+after_script:
+  - "test -e ./coverage/lcov.info && npm install coveralls@2 && cat ./coverage/lcov.info | coveralls"
+