use gotestsum (#4)

* Add test results with gotestsum

* fix path

* Fix 'unknown'

* Write files to /tmp by default

* change to gotest

.circleci/config.yml

@@ -12,13 +12,15 @@ jobs:
       - run:
           name: Code Coverage
           command: |
-            mkdir -p /tmp/artifacts
-            go test -covermode=count -coverprofile=count.out ./...
+            go get gotest.tools/gotestsum
+            mkdir -p /tmp/artifacts/gotest
+            gotestsum --junitfile /tmp/artifacts/gotest/test-results.xml -- -covermode=count -coverprofile=count.out ./...
             go tool cover -func=count.out
-            go tool cover -html=count.out -o coverage.html
-            mv coverage.html /tmp/artifacts
+            go tool cover -html=count.out -o /tmp/artifacts/coverage.html
       - store_artifacts:
           path: /tmp/artifacts
+      - store_test_results:
+          path: /tmp/artifacts/gotest
       - run:
           name: Build
           command: go build