Flutter Firebase example project.
# Generate codes
flutter packages pub run build_runner build --delete-conflicting-outputs
flutter packages pub run build_runner watch
# Install coverage tool
brew install lcov
# Test Coverage
flutter test --coverage
lcov --remove coverage/lcov.info 'lib/**/*.g.dart' -o coverage/lcov.info
genhtml coverage/lcov.info -o coverage/html
open coverage/html/index.html