osx_image: xcode8.2
language: objective-c
before_install:
  - xcrun simctl delete 79C525D3-2383-4201-AC3A-81810F9F4E03
script: make test-all

osx_image: xcode9.2
language: objective-c
script: make test-all

Update Travis CI settings for XCode 9.2
Update Travis CI settings for XCode 9.2
