Travis-CI test on multiple iOS SDKs

Question

I'm trying to test a framework on multiple iOS SDKs to make sure it's working on all. But I'm realizing that not all SDKs are available on all of the travis-ci osx_image. For example xcode7 only has iphonesimulator9.0.

Is there a way to specify an osx_image in a matrix? This is what my file looks like right now:

language: objective-c
osx_image: xcode7

env:
  matrix:
    - SDK=iphonesimulator8.1
    - SDK=iphonesimulator8.2
    - SDK=iphonesimulator8.3
    - SDK=iphonesimulator8.4
    - SDK=iphonesimulator9.0

script: 
  - xctool clean test -project KGNColor.xcodeproj -scheme KGNColor -sdk $SDK

Answer 1

Are you looking for something like this?

https://github.com/realm/jazzy/blob/master/.travis.yml#L12-L17

matrix:
 include:
  - osx_image: xcode6.4
    env: TRAVIS_SWIFT_VERSION=1.2
  - osx_image: xcode7.1
    env: TRAVIS_SWIFT_VERSION=2.1

The docs for Travis are a little sparse, but I saw this a while back on their twitter feed. https://twitter.com/travisci/status/644930409730580480