ci(travis): refactor .travis.yml (#394)

put everything in its own stage for clarity and easier adding of new
stages

Author: juancarlostong

.travis.yml

@@ -1,46 +1,50 @@
-language: objective-c
-osx_image: xcode10
-branches:
-  only:
-    - master
-env:
-  matrix:
-    - SCHEME=OptimizelySDKiOS TEST_SDK=iphonesimulator PLATFORM='iOS Simulator' OS=9.1 NAME='iPad Air'
-    - SCHEME=OptimizelySDKiOS TEST_SDK=iphonesimulator PLATFORM='iOS Simulator' OS=10.1 NAME='iPhone 7 Plus'
-    - SCHEME=OptimizelySDKiOS TEST_SDK=iphonesimulator PLATFORM='iOS Simulator' OS=10.3.1 NAME='iPhone 7'
-    - SCHEME=OptimizelySDKiOS-Universal TEST_SDK=iphonesimulator PLATFORM='iOS Simulator' OS=11.1 NAME='iPhone 6s'
-    - SCHEME=OptimizelySDKTVOS TEST_SDK=appletvsimulator PLATFORM='tvOS Simulator' OS=10.2 NAME='Apple TV 1080p'
-    - SCHEME=OptimizelySDKTVOS-Universal TEST_SDK=appletvsimulator PLATFORM='tvOS Simulator' OS=9.2 NAME='Apple TV 1080p'
-before_install: 
-  - gem install slather --no-rdoc --no-ri --no-document --quiet
-addons:
-  srcclr: true
-script:
-  - pod spec lint --quick
-  - if [[ "$TRAVIS_BRANCH" == "master" ]]; then xcodebuild test -quiet -workspace OptimizelySDK.xcworkspace -scheme $SCHEME -configuration Release CODE_SIGN_IDENTITY="" CODE_SIGNING_REQUIRED=NO -sdk $TEST_SDK -destination "platform=$PLATFORM,OS=$OS,name=$NAME" ONLY_ACTIVE_ARCH=YES | egrep -B 10 -A 10 "(error|failed|crash|exit|FAILED|Failing|failures)"; fi
-after_success:
-  - slather
-  - sleep 5 # https://github.com/travis-ci/travis-ci/issues/4725
+language: minimal
+os: linux
 
 # Integration tests need to run first to reset the PR build status to pending
 stages:
   - 'Integration tests'
-  - 'Test'
+  - 'Unit Tests'
 
 jobs:
   include:
     - stage: 'Integration tests'
+      language: minimal
+      os: linux
       env:
         - SDK=objective-c
         - BUILD_NUMBER=$TRAVIS_BUILD_NUMBER
         - TESTAPP_TAG=master
       cache: false
-      language: minimal
-      os: linux
       before_install: skip
       install: skip
       before_script:
         - mkdir $HOME/travisci-tools && pushd $HOME/travisci-tools && git init && git pull https://$CI_USER_TOKEN@github.com/optimizely/travisci-tools.git && popd
       script:
         - "$HOME/travisci-tools/fsc-trigger/trigger_fullstack-sdk-compat.sh"
       after_success: travis_terminate 0
+
+    - stage: 'Unit Tests'
+      language: objective-c
+      osx_image: xcode10
+      branches:
+        only:
+          - master
+      env:
+        matrix:
+          - SCHEME=OptimizelySDKiOS TEST_SDK=iphonesimulator PLATFORM='iOS Simulator' OS=9.1 NAME='iPad Air'
+          - SCHEME=OptimizelySDKiOS TEST_SDK=iphonesimulator PLATFORM='iOS Simulator' OS=10.1 NAME='iPhone 7 Plus'
+          - SCHEME=OptimizelySDKiOS TEST_SDK=iphonesimulator PLATFORM='iOS Simulator' OS=10.3.1 NAME='iPhone 7'
+          - SCHEME=OptimizelySDKiOS-Universal TEST_SDK=iphonesimulator PLATFORM='iOS Simulator' OS=11.1 NAME='iPhone 6s'
+          - SCHEME=OptimizelySDKTVOS TEST_SDK=appletvsimulator PLATFORM='tvOS Simulator' OS=10.2 NAME='Apple TV 1080p'
+          - SCHEME=OptimizelySDKTVOS-Universal TEST_SDK=appletvsimulator PLATFORM='tvOS Simulator' OS=9.2 NAME='Apple TV 1080p'
+      before_install:
+        - gem install slather --no-rdoc --no-ri --no-document --quiet
+      addons:
+        srcclr: true
+      script:
+        - pod spec lint --quick
+        - if [[ "$TRAVIS_BRANCH" == "master" ]]; then xcodebuild test -quiet -workspace OptimizelySDK.xcworkspace -scheme $SCHEME -configuration Release CODE_SIGN_IDENTITY="" CODE_SIGNING_REQUIRED=NO -sdk $TEST_SDK -destination "platform=$PLATFORM,OS=$OS,name=$NAME" ONLY_ACTIVE_ARCH=YES | egrep -B 10 -A 10 "(error|failed|crash|exit|FAILED|Failing|failures)"; fi
+      after_success:
+        - slather
+        - sleep 5 # https://github.com/travis-ci/travis-ci/issues/4725