wip -- coverage report to ci

.circleci/config.yml

@@ -160,16 +160,26 @@ jobs:
             go mod download
             # cafs tests are memory intensive: best to run them separately
             gotestsum --junitfile /tmp/test-results/go-test-report.xml --format short-with-failures -- \
-              -race $(go list ./...|grep -v cafs)
+              -race -coverprofile=c_non_cafs.out $(go list ./...|grep -v cafs)
               # cafs testing: trade parallelism for memory on limited CI config + race turned off
-            gotestsum --junitfile /tmp/test-results/go-test-report-cafs.xml --format short-with-failures -- -parallel 4  ./pkg/cafs/...
+            gotestsum --junitfile /tmp/test-results/go-test-report-cafs.xml --format short-with-failures -- \
+              -parallel 4 -coverprofile=c_cafs_only.out ./pkg/cafs/...
+            # collect coverage metrics
+            mkdir -p /tmp/test-coverage
+            go tool cover -html=c_non_cafs.out -o coverage_non_cafs.html
+            go tool cover -html=c_cafs_only.out -o coverage_cafs_only.html
+            mv coverage_non_cafs.html coverage_cafs_only.html \
+              /tmp/test-coverage
       - save_cache:
           key: pkg-cache-{{ checksum "go.sum" }}
           paths:
             - "/go/pkg"
       - store_artifacts:
           path: /tmp/test-results
           destination: raw-test-output
+      - store_artifacts:
+          path: /tmp/test-coverage
+          destination: coverage-report
       - store_test_results:
           path: /tmp/test-results