adds node 6 to CI matrix; closes #2239 (#2251)

* update travis matrix for node 6; use trusty image

* add test to trigger use of glob.sync()

.travis.yml

@@ -1,21 +1,33 @@
+# in order to use 'trusty' dist, need this.
+# see https://docs.travis-ci.com/user/trusty-ci-environment/
+sudo: required
+
+# trust dist provides a modern build chain (as opposed to 'precise' dist)
+# which absolves us from having to install compilers and stuff
+dist: trusty
+
 language: node_js
-env:
-  global:
-   - CXX=g++-4.8
+
+node_js:
+  - '6'
+  - '5'
+  - '4'
+  - 'iojs'
+  - '0.12'
+  - '0.11'
+  - '0.10'
+  - '0.8'
+
 before_install:
-- ./scripts/ensure-compatible-npm.sh
+  # node 0.8 won't install our dev deps with an out-of-box npm;
+  # this upgrades it
+  - ./scripts/ensure-compatible-npm.sh
+
 script: travis_retry npm test
-node_js:
-- '5'
-- '4'
-- 'iojs'
-- '0.12'
-- '0.11'
-- '0.10'
-- '0.8'
-sudo: false
+
 notifications:
   urls:
+    # for gitter
     - secure: "EmycFlk48bUvOQ07mxnbcn6T+n3G4wVWuXgrDsUUp6EhJ9866wQK9i+qVhqogWuSEQrGoVaS/vpc/NEYxDP30BD/+nqgvOhVhLVEgtziI85imyV/oUVpArdW3AUmuzCrx7rQCivygjpBmWV9ZcUT5Km4qp1iQhuumy2WbplxrZ4="
   on_success: change
   on_failure: always

test/acceptance/utils.js

@@ -404,6 +404,17 @@ describe('lib/utils', function () {
       utils.lookupFiles('/tmp', ['js'], false).should.eql([]);
     });
 
+    it('should accept a glob "path" value', function () {
+      utils.lookupFiles('/tmp/mocha-utils*', ['js'], false)
+        .should
+        .containEql('/tmp/mocha-utils-link.js')
+        .and
+        .containEql('/tmp/mocha-utils.js')
+        .and
+        .have
+        .lengthOf(2);
+    });
+
     afterEach(function () {
       ['/tmp/mocha-utils.js', '/tmp/mocha-utils-link.js', '/tmp/bob'].forEach(function (path) {
         try {