[Tests] update travis-ci config

.travis.yml

@@ -1,8 +1,38 @@
-sudo: false
 language: node_js
+os:
+ - linux
 node_js:
-- stable
-branches:
-  only:
-  - master
-  - /^greenkeeper-/
+  - "9"
+  - "8"
+  - "7"
+  - "6"
+  - "5"
+  - "4"
+before_install:
+  - 'nvm install-latest-npm'
+install:
+  - 'if [ "${TRAVIS_NODE_VERSION}" = "0.6" ] || [ "${TRAVIS_NODE_VERSION}" = "0.9" ]; then nvm install --latest-npm 0.8 && npm install && nvm use "${TRAVIS_NODE_VERSION}"; else npm install; fi;'
+script:
+  - 'if [ -n "${PRETEST-}" ]; then npm run pretest ; fi'
+  - 'if [ -n "${POSTTEST-}" ]; then npm run posttest ; fi'
+  - 'if [ -n "${KARMA-}" ]; then npm run karma ; fi'
+  - 'if [ -n "${COVERAGE-}" ]; then npm run coverage ; fi'
+  - 'if [ -n "${TEST-}" ]; then npm run tests-only ; fi'
+sudo: false
+env:
+  - TEST=true
+matrix:
+  fast_finish: true
+  include:
+    - node_js: "lts/*"
+      env: PRETEST=true
+    - node_js: "lts/*"
+      env: KARMA=true
+  allow_failures:
+    - os: osx
+    - env: TEST=true ALLOW_FAILURE=true
+    - env: COVERAGE=true
+    - env: KARMA=true
+    - node_js: "9"
+    - node_js: "7"
+    - node_js: "5"

package.json

@@ -18,7 +18,8 @@
     "build-min": "webpack -p modules/index.js umd/expect.min.js",
     "lint": "eslint modules",
     "pretest": "npm run lint",
-    "test": "npm run jest",
+    "test": "npm run tests-only",
+    "tests-only": "npm run jest",
     "jest": "jest",
     "posttest": "npm run karma",
     "karma": "karma start",