CC test reporter on Travis parallel builds

.travis.yml

language: ruby
env:
  global:
  - CC_TEST_REPORTER_ID=<repo_test_reporter_id>
  - RSPEC_PARALLELISM=4 # total number of jobs
  matrix:
  - "RSPEC_TEST_GROUP=1"
  - "RSPEC_TEST_GROUP=2"
  - "RSPEC_TEST_GROUP=3"
  - "RSPEC_TEST_GROUP=4"
before_script:
  - curl -L https://codeclimate.com/downloads/test-reporter/test-reporter-latest-linux-amd64 > ./cc-test-reporter
  - chmod +x ./cc-test-reporter
script:
  - bundle exec parallel_test spec/ -n $RSPEC_PARALLELISM --only-group $RSPEC_TEST_GROUP --group-by filesize --type rspec
  - ./format-coverage
after_script:
  - ./sum-upload-coverage

format-coverage.sh

#!/bin/sh

pip install --user awscli

if [ "$TRAVIS_PULL_REQUEST" == "false" ]; then
  ./cc-test-reporter format-coverage -t simplecov --output coverage/codeclimate.$RSPEC_TEST_GROUP.json coverage/.resultset.json
  aws s3 cp coverage/codeclimate.$RSPEC_TEST_GROUP.json s3://bucket/codeclimate/$TRAVIS_REPO_SLUG/$TRAVIS_BUILD_NUMBER/codeclimate.$RSPEC_TEST_GROUP.json
fi

sum-upload-coverage.sh

#!/bin/sh

if [ "$TRAVIS_PULL_REQUEST" == "false" ] && [ $TRAVIS_TEST_RESULT == 0 ]; then
  aws s3 cp --recursive s3://bucket/codeclimate/$TRAVIS_REPO_SLUG/$TRAVIS_BUILD_NUMBER/ coverage
  ./cc-test-reporter sum-coverage --output - --parts $RSPEC_PARALLELISM coverage/codeclimate.* | ./cc-test-reporter upload-coverage --input -
fi