Add option for test discovery info mode

Add a command line option to enable test discovery info mode, where
enabling it will cause test discovery to run and report results but not
actually affect the build. This is useful for rolling out to new targets
without immediately enabling test discovery mode.

Test: atest build_test_suites_test
Bug: 388833029
Change-Id: I8baf73e6353e4c3d7d6836c4f9823341a7f8b5dd

1 files changed, 7 insertions, 2 deletions

diff --git a/ci/build_test_suites.py b/ci/build_test_suites.py
index cdcba5a87e..0cae816732 100644
--- a/ci/build_test_suites.py
+++ b/ci/build_test_suites.py
@@ -84,14 +84,14 @@ class BuildPlanner:
     packaging_commands_getters = []
     # In order to roll optimizations out differently between test suites and
     # device builds, we have separate flags.
-    enable_discovery = ('test_suites_zip_test_discovery'
+    enable_discovery = (('test_suites_zip_test_discovery'
         in self.build_context.enabled_build_features
         and not self.args.device_build
     ) or (
         'device_zip_test_discovery'
         in self.build_context.enabled_build_features
         and self.args.device_build
-    )
+    )) and not self.args.test_discovery_info_mode
     logging.info(f'Discovery mode is enabled= {enable_discovery}')
     preliminary_build_targets = self._collect_preliminary_build_targets(enable_discovery)
 
@@ -252,6 +252,11 @@ def parse_args(argv: list[str]) -> argparse.Namespace:
       action='store_true',
       help='Flag to indicate running a device build.',
   )
+  argparser.add_argument(
+      '--test_discovery_info_mode',
+      action='store_true',
+      help='Flag to enable running test discovery in info only mode.',
+  )
 
   return argparser.parse_args(argv)