CI: Added test coverage

.gitlab-ci.yml

@@ -3,6 +3,7 @@ image: golang:alpine
 variables:
   GO111MODULE: "on"
   CGO_ENABLED: "0"
+  COV: "/tmp/cov_results"
 
 before_script:
   - apk add git
@@ -13,7 +14,10 @@ stages:
 unit_test:
   stage: test
   script:
-    - go test -tags unit -v ./...
+    - go test -tags unit -v -coverprofile $COV ./...
+    - go tool cover -func $COV
+        | grep -F 'total:'
+        | sed -E 's|total:\s+\(.*?\)\s+([0-9]+\.[0-9]+%)|TEST_COVERAGE=\1|'
 
 integration_test:
   stage: test