Launchable: Enable PTS observation mode (#12617)

Launchable offers the Predictive Test Selection feature for speeding up CI execution. Predictive Test Selection leverages machine learning to identify the right tests to run for a specific code change. By analyzing data from past test runs and considering the changes being tested, Launchable determines which tests are most relevant.

To evaluate the list of tests that Launchable selects, I enable PTS observation mode. Please note that there is no impacts on CI execution.

1 files changed, 33 insertions, 0 deletions

diff --git a/.github/actions/launchable/setup/action.yml b/.github/actions/launchable/setup/action.yml
index 164eb1db5d..1e357f819e 100644
--- a/.github/actions/launchable/setup/action.yml
+++ b/.github/actions/launchable/setup/action.yml
@@ -106,6 +106,9 @@ runs:
         echo test_all_report_file='launchable_test_all_report.json' >> $GITHUB_OUTPUT
         echo btest_report_file='launchable_btest_report.json' >> $GITHUB_OUTPUT
         echo test_spec_report_dir='launchable_test_spec_report' >> $GITHUB_OUTPUT
+        echo test_all_subset_input_file='launchable_test_all_subset_input.txt' >> $GITHUB_OUTPUT
+        echo btest_subset_input_file='launchable_btest_subset_input.txt' >> $GITHUB_OUTPUT
+        echo test_spec_subset_input_file='launchable_test_spec_subset_input.txt' >> $GITHUB_OUTPUT
       if: steps.enable-launchable.outputs.enable-launchable
 
     - name: Set environment variables for Launchable
@@ -158,31 +161,52 @@ runs:
         if [ "${test_all_enabled}" = "true" ]; then
           launchable record session \
             --build "${build_name}" \
+            --observation \
             --flavor os=${{ inputs.os }} \
             --flavor test_task=${{ inputs.test-task }} \
             --flavor test_opts=${test_opts} \
             --test-suite ${test_all_test_suite} \
             > "${test_all_session_file}"
+          find test -name "*_test.rb" -o -name "test_*.rb" | sed 's|^|file=|' > "${test_all_subset_input_file}"
+          launchable subset \
+            --non-blocking \
+            --target 90% \
+            --session "$(cat "${test_all_session_file}")" \
+            raw ${test_all_subset_input_file} > /dev/null
           echo "TESTS=${TESTS} --launchable-test-reports=${test_all_report_file}" >> $GITHUB_ENV
         fi
         if [ "${btest_enabled}" = "true" ]; then
           launchable record session \
             --build "${build_name}" \
+            --observation \
             --flavor os=${{ inputs.os }} \
             --flavor test_task=${{ inputs.test-task }} \
             --flavor test_opts=${test_opts} \
             --test-suite ${btest_test_suite} \
             > "${btest_session_file}"
+          find bootstraptest -name "*_test.rb" -o -name "test_*.rb" | sed 's|^|file=|' > "${btest_subset_input_file}"
+          launchable subset \
+            --non-blocking \
+            --target 90% \
+            --session "$(cat "${btest_session_file}")" \
+            raw ${btest_subset_input_file} > /dev/null
           echo "BTESTS=${BTESTS} --launchable-test-reports=${btest_report_file}" >> $GITHUB_ENV
         fi
         if [ "${test_spec_enabled}" = "true" ]; then
           launchable record session \
             --build "${build_name}" \
+            --observation \
             --flavor os=${{ inputs.os }} \
             --flavor test_task=${{ inputs.test-task }} \
             --flavor test_opts=${test_opts} \
             --test-suite ${test_spec_test_suite} \
             > "${test_spec_session_file}"
+          find spec/ruby -name "*_spec.rb" | sed 's|^|file=|' > "${test_spec_subset_input_file}"
+          launchable subset \
+            --non-blocking \
+            --target 90% \
+            --session "$(cat "${test_spec_session_file}")" \
+            raw ${test_spec_subset_input_file} > /dev/null
           echo "SPECOPTS=${SPECOPTS} --launchable-test-reports=${test_spec_report_dir}" >> $GITHUB_ENV
         fi
       if: steps.enable-launchable.outputs.enable-launchable
@@ -196,6 +220,9 @@ runs:
         test_all_report_file: ${{ steps.global.outputs.test_all_report_file }}
         btest_report_file: ${{ steps.global.outputs.btest_report_file }}
         test_spec_report_dir: ${{ steps.global.outputs.test_spec_report_dir }}
+        test_all_subset_input_file: ${{ steps.global.outputs.test_all_subset_input_file }}
+        btest_subset_input_file: ${{ steps.global.outputs.btest_subset_input_file }}
+        test_spec_subset_input_file: ${{ steps.global.outputs.test_spec_subset_input_file }}
 
     - name: Variables to report Launchable
       id: variables
@@ -261,6 +288,9 @@ runs:
           rm -f "${test_report_path}"
           rm -f "${btest_report_path}"
           rm -fr "${test_spec_report_path}"
+          rm -f "${test_all_subset_input_file}"
+          rm -f "${btest_subset_input_file}"
+          rm -f "${test_spec_subset_input_file}"
       if: ${{ always() && steps.enable-launchable.outputs.enable-launchable }}
       env:
         test_report_path: ${{ steps.variables.outputs.test_report_path }}
@@ -272,3 +302,6 @@ runs:
         test_all_session_file: ${{ steps.global.outputs.test_all_session_file }}
         btest_session_file: ${{ steps.global.outputs.btest_session_file }}
         test_spec_session_file: ${{ steps.global.outputs.test_spec_session_file }}
+        test_all_subset_input_file: ${{ steps.global.outputs.test_all_subset_input_file }}
+        btest_subset_input_file: ${{ steps.global.outputs.btest_subset_input_file }}
+        test_spec_subset_input_file: ${{ steps.global.outputs.test_spec_subset_input_file }}