[Backend Tester] Upload test report artifacts in CI job

ghstack-source-id: 236beeb
ghstack-comment-id: 3190250291
Pull-Request: #13444

Author: GregoryComer

.ci/scripts/backend-test-linux.sh

@@ -8,8 +8,10 @@ set -eux
 
 SUITE=$1
 FLOW=$2
+ARTIFACT_DIR=$3
 
 echo "Running backend test job for suite $SUITE, flow $FLOW."
+echo "Saving job artifacts to $ARTIFACT_DIR."
 
 # The generic Linux job chooses to use base env, not the one setup by the image
 eval "$(conda shell.bash hook)"
@@ -22,4 +24,4 @@ conda activate "${CONDA_ENV}"
 # We need the runner to test the built library.
 PYTHON_EXECUTABLE=python .ci/scripts/setup-linux.sh --build-tool cmake --build-mode Release
 
-python -m executorch.backends.test.suite.runner $SUITE --flow $FLOW --report test_results.csv
+python -m executorch.backends.test.suite.runner $SUITE --flow $FLOW --report "$ARTIFACT_DIR/test_results.csv"

.github/workflows/nightly.yml

@@ -50,6 +50,7 @@ jobs:
       docker-image: ci-image:executorch-ubuntu-22.04-clang12
       submodules: recursive
       timeout: 90
+      upload-artifact: test-report-${{ matrix.flow }}-${{ matrix.suite }
       script: |
         set -eux
-        .ci/scripts/backend-test-linux.sh "${{ matrix.suite }}" "${{ matrix.flow }}"
+        .ci/scripts/backend-test-linux.sh "${{ matrix.suite }}" "${{ matrix.flow }}" "${RUNNER_ARTIFACT_DIR}"