Extract list of changed files to artifact

.gitlab/ci/setup.gitlab-ci.yml

@@ -70,11 +70,13 @@ verify-tests-yml:
     - install_gitlab_gem
     - install_tff_gem
     - retrieve_tests_mapping
-    - 'if [ -n "$CI_MERGE_REQUEST_IID" ]; then tooling/bin/find_tests ${MATCHED_TESTS_FILE}; fi'
-    - 'if [ -n "$CI_MERGE_REQUEST_IID" ]; then echo "test files affected: $(cat $MATCHED_TESTS_FILE)"; fi'
+    - 'if [ -n "$CI_MERGE_REQUEST_IID" ]; then tooling/bin/find_changes ${CHANGES_FILE}; fi'
+    - 'if [ -n "$CI_MERGE_REQUEST_IID" ]; then tooling/bin/find_tests ${CHANGES_FILE} ${MATCHED_TESTS_FILE}; fi'
+    - 'if [ -n "$CI_MERGE_REQUEST_IID" ]; then echo "related rspec tests: $(cat $MATCHED_TESTS_FILE)"; fi'
   artifacts:
     expire_in: 7d
     paths:
+      - ${CHANGES_FILE}
       - ${MATCHED_TESTS_FILE}
 
 detect-tests:
@@ -83,6 +85,7 @@ detect-tests:
     - .rails:rules:detect-tests
   variables:
     RSPEC_TESTS_MAPPING_ENABLED: "true"
+    CHANGES_FILE: tmp/changed_files.txt
     MATCHED_TESTS_FILE: tmp/matching_tests.txt
 
 detect-tests as-if-foss:
@@ -91,6 +94,7 @@ detect-tests as-if-foss:
     - .rails:rules:detect-tests
     - .as-if-foss
   variables:
+    CHANGES_FILE: tmp/changed_foss_files.txt
     MATCHED_TESTS_FILE: tmp/matching_foss_tests.txt
   before_script:
     - '[ "$FOSS_ONLY" = "1" ] && rm -rf ee/ qa/spec/ee/ qa/qa/specs/features/ee/ qa/qa/ee/ qa/qa/ee.rb'

tooling/bin/find_changes

+#!/usr/bin/env ruby
+# frozen_string_literal: true
+
+require 'gitlab'
+
+gitlab_token = ENV.fetch('DANGER_GITLAB_API_TOKEN', '')
+gitlab_endpoint = ENV.fetch('CI_API_V4_URL')
+mr_project_path = ENV.fetch('CI_MERGE_REQUEST_PROJECT_PATH')
+mr_iid = ENV.fetch('CI_MERGE_REQUEST_IID')
+
+output_file = ARGV.shift
+
+Gitlab.configure do |config|
+  config.endpoint       = gitlab_endpoint
+  config.private_token  = gitlab_token
+end
+
+mr_changes = Gitlab.merge_request_changes(mr_project_path, mr_iid)
+file_changes = mr_changes.changes.map { |change| change['new_path'] }
+
+File.write(output_file, file_changes.join(' '))

tooling/bin/find_tests

 #!/usr/bin/env ruby
 # frozen_string_literal: true
 
-require 'gitlab'
 require 'test_file_finder'
 
-gitlab_token = ENV.fetch('DANGER_GITLAB_API_TOKEN', '')
-gitlab_endpoint = ENV.fetch('CI_API_V4_URL')
-
-Gitlab.configure do |config|
-  config.endpoint       = gitlab_endpoint
-  config.private_token  = gitlab_token
-end
-
+changes = ARGV.shift
 output_file = ARGV.shift
 
-mr_project_path = ENV.fetch('CI_MERGE_REQUEST_PROJECT_PATH')
-mr_iid = ENV.fetch('CI_MERGE_REQUEST_IID')
-
-mr_changes = Gitlab.merge_request_changes(mr_project_path, mr_iid)
-changed_files = mr_changes.changes.map { |change| change['new_path'] }
+changed_files = File.read(changes).split(' ')
 
 tff = TestFileFinder::FileFinder.new(paths: changed_files).tap do |file_finder|
   file_finder.use TestFileFinder::MappingStrategies::PatternMatching.load('tests.yml')