fix travis

Author: xg-wang

.travis.yml

@@ -43,7 +43,8 @@ install:
 
 script:
   - yarn lint:js
-  - yarn test:node
+  # For ember-cli-addon-tests #198
+  - npm run test:node
   # Usually, it's ok to finish the test scenario without reverting
   #  to the addon's original dependency state, skipping "cleanup".
   - node_modules/.bin/ember try:one $EMBER_TRY_SCENARIO --skip-cleanup

test/fastboot-build-test.js

@@ -20,6 +20,7 @@ describe('it builds with ember-cli-fastboot', function() {
       .then(app =>
         app.editPackageJSON(pkg => {
           pkg.devDependencies['ember-cli-fastboot'] = '*';
+          pkg.devDependencies['ember-data'] = '3.5.0';
         })
       )
       .then(() => app.run('npm', 'install'));

test/fastboot-test.js

@@ -20,6 +20,7 @@ describe('renders in fastboot build', function() {
       .then(app =>
         app.editPackageJSON(pkg => {
           pkg.devDependencies['ember-cli-fastboot'] = '*';
+          pkg.devDependencies['ember-data'] = '3.5.0';
           // These 2 are in ember-fetch's package.json, symlinking to dummy won't help resolve
           pkg.devDependencies['abortcontroller-polyfill'] = '*';
           pkg.devDependencies['node-fetch'] = '*';