Adds CodeClimate coverage report.

.github/workflows/ci.yml

@@ -1,6 +1,10 @@
 name: CI
 
 on: [push]
+env:
+  GIT_COMMIT_SHA: ${{ github.sha }}
+  GIT_BRANCH: ${{ github.ref }}
+  CC_TEST_REPORTER_ID: ${{ secrets.CC_TEST_REPORTER_ID }}
 jobs:
   linting:
     runs-on: ubuntu-latest
@@ -33,8 +37,19 @@ jobs:
       uses: actions/setup-ruby@v1
       with:
         ruby-version: ${{ matrix.ruby }}
-    - name: Build and test with Rake
+    - name: Build
       run: |
         gem install bundler
         bundle install --jobs 4 --retry 3
-        bundle exec rake
+    - name: Setup Code Climate
+      if: matrix.ruby == '2.6.x'
+      run: |
+        echo "GIT COMMIT SHA: ${GIT_COMMIT_SHA}"
+        curl -L https://codeclimate.com/downloads/test-reporter/test-reporter-latest-linux-amd64 > ./cc-test-reporter
+        chmod +x ./cc-test-reporter
+        ./cc-test-reporter before-build
+    - name: Test
+      run: bundle exec rake
+    - name: Run Code Climate Test Reporter
+      if: success() && matrix.ruby == '2.6.x'
+      run: ./cc-test-reporter after-build --coverage-input-type simplecov --exit-code $?