3718 – Update how we retry tests (#1673)

* update retry_count to get the number from env var or default to 0

When running locally we might not want the tests to retry, to do this
we would need to comment out the retry line. We want to make this easier
on the developer

Converting the env variable to an integer because ENV[] on ruby returns a string
https://ruby-doc.org/core-3.0.0/ENV.html

Set TEST_RETRY_COUNT to 3 on Travis because we were using the default
before (which is 3)
https://www.rubydoc.info/gems/minitest-retry/

.travis.yml

@@ -44,13 +44,13 @@ jobs:
   include:
     - stage: tests
       name: functional-tests
-      script: docker-compose exec -e PATTERN='models mailers integration workers lib contract' api test/run-tests.sh
+      script: docker-compose exec -e TEST_RETRY_COUNT=3 -e PATTERN='models mailers integration workers lib contract' api test/run-tests.sh
     - stage: tests
       name: unit-tests
-      script: docker-compose exec -e PATTERN='controllers contract' api test/run-tests.sh
+      script: docker-compose exec -e TEST_RETRY_COUNT=3 -e PATTERN='controllers contract' api test/run-tests.sh
     - stage: tests
       name: contract-tests
-      script: docker-compose exec -e PATTERN='controllers models mailers integration workers lib' api test/run-tests.sh
+      script: docker-compose exec -e TEST_RETRY_COUNT=3 -e PATTERN='controllers models mailers integration workers lib' api test/run-tests.sh
 notifications:
   slack:
     secure: 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

test/test_helper.rb

@@ -35,7 +35,7 @@
 
 Dir[Rails.root.join("test/support/**/*.rb")].each {|f| require f}
 
-Minitest::Retry.use!
+Minitest::Retry.use!(retry_count: ENV['TEST_RETRY_COUNT'].to_i || 0)
 TestDatabaseHelper.setup_database_partitions!
 
 class ActionController::TestCase