Add codecov for test coverage (#56)

* Add codecov for test coverage

.github/workflows/go.yml

@@ -46,7 +46,11 @@ jobs:
       with:
         fetch-depth: 1
     - uses: actions/setup-go@v4
-    - run: go test
+    - run: go test -race -coverprofile=coverage.txt -covermode=atomic
+    - name: Upload coverage reports to Codecov
+      uses: codecov/codecov-action@v3
+      env:
+        CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}
   build:
     name: "Build Code"
     runs-on: ubuntu-latest

codecov.yml

@@ -0,0 +1,6 @@
+comment:                  # this is a top-level key
+  layout: " diff, flags, files"
+  behavior: default
+  require_changes: false  # if true: only post the comment if coverage changes
+  require_base: false        # [true :: must have a base report to post]
+  require_head: true       # [true :: must have a head report to post]