Upload xcresults to LUCI cloud storage

testing/run_tests.py

@@ -17,6 +17,7 @@
 import multiprocessing
 import os
 import re
+import shutil
 import subprocess
 import sys
 import tempfile
@@ -728,6 +729,12 @@ def run_objc_tests(ios_variant='ios_debug_sim_unopt', test_filter=None):
     ios_unit_test_dir = os.path.join(
         BUILDROOT_DIR, 'flutter', 'testing', 'ios', 'IosUnitTests'
     )
+
+    result_bundle_temp = tempfile.TemporaryDirectory(
+        suffix='ios_embedding_xcresult'
+    ).name
+    result_bundle_path = os.path.join(result_bundle_temp, 'ios_embedding')
+
     # Avoid using xcpretty unless the following can be addressed:
     # - Make sure all relevant failure output is printed on a failure.
     # - Make sure that a failing exit code is set for CI.
@@ -736,13 +743,27 @@ def run_objc_tests(ios_variant='ios_debug_sim_unopt', test_filter=None):
         'xcodebuild '
         '-sdk iphonesimulator '
         '-scheme IosUnitTests '
-        "-destination name='" + new_simulator_name + "' "
+        '-resultBundlePath ' + result_bundle_path + " -destination name='" +
+        new_simulator_name + "' "
         'test '
         'FLUTTER_ENGINE=' + ios_variant
     ]
     if test_filter is not None:
       test_command[0] = test_command[0] + ' -only-testing:%s' % test_filter
     run_cmd(test_command, cwd=ios_unit_test_dir, shell=True)
+
+    # except:
+    # The LUCI environment may provide a variable containing a directory path
+    # for additional output files that will be uploaded to cloud storage.
+    # Upload the xcresult when the tests fail.
+    luci_test_outputs_path = os.environ.get('FLUTTER_TEST_OUTPUTS_DIR')
+    xcresult_bundle = os.path.join(result_bundle_temp, 'ios_embedding.xcresult')
+    print(xcresult_bundle)
+    if luci_test_outputs_path and os.path.exists(xcresult_bundle):
+      dump_path = os.path.join(luci_test_outputs_path, 'ios_embedding.xcresult')
+      # xcresults contain many little files. Archive the bundle before upload.
+      shutil.make_archive(dump_path, 'zip', root_dir=xcresult_bundle)
+
   finally:
     delete_simulator(new_simulator_name)