Start GitHub Actions (#4431)

Author: paulb777

.github/workflows/actions.yml

@@ -0,0 +1,39 @@
+name: CI
+
+on: [pull_request]
+
+jobs:
+  check:
+    runs-on: macOS-latest
+    steps:
+    - uses: actions/checkout@v1
+    - name: Check
+      run: |
+        brew install https://raw.githubusercontent.com/Homebrew/homebrew-core/e3496d9/Formula/clang-format.rb
+        brew install https://raw.githubusercontent.com/Homebrew/homebrew-core/7963c3d/Formula/swiftformat.rb
+        pip install flake8
+        ./scripts/check.sh --test-only
+
+  core:
+    needs: check
+    runs-on: macOS-latest
+    steps:
+    - uses: actions/checkout@v1
+    - name: Set up
+      run: |
+        bundle install
+        bundle exec pod --version
+    - name: FirebaseCore
+      run: ./scripts/pod_lib_lint.rb FirebaseCore.podspec --platforms=ios
+
+  dynamiclinks:
+    needs: check
+    runs-on: macOS-latest
+    steps:
+    - uses: actions/checkout@v1
+    - name: Set up
+      run: |
+        bundle install
+        bundle exec pod --version
+    - name: FirebaseDynamicLinks
+      run: ./scripts/pod_lib_lint.rb FirebaseDynamicLinks.podspec

scripts/check.sh

@@ -246,14 +246,16 @@ fi
 
 # If there are changes to the Firestore project, ensure they're ordered
 # correctly to minimize conflicts.
-if ! git diff --quiet "${START_SHA}" -- Firestore; then
-  sync_project_cmd=("${top_dir}/scripts/sync_project.rb")
-  if [[ "${TEST_ONLY}" == true ]]; then
-    sync_project_cmd+=(--test-only)
-  fi
-  "${sync_project_cmd[@]}"
-  if ! git diff --quiet; then
-    maybe_commit "sync_project.rb generated changes"
+if [ -z "${GITHUB_WORKFLOW-}" ]; then
+  if ! git diff --quiet "${START_SHA}" -- Firestore; then
+    sync_project_cmd=("${top_dir}/scripts/sync_project.rb")
+    if [[ "${TEST_ONLY}" == true ]]; then
+      sync_project_cmd+=(--test-only)
+    fi
+    "${sync_project_cmd[@]}"
+    if ! git diff --quiet; then
+      maybe_commit "sync_project.rb generated changes"
+    fi
   fi
 fi