Add target to generate code coverage report (#263)

* Add target to generate code coverage report

Signed-off-by: Shiva Krishna, Merla <smerla@nvidia.com>

* Ignore test packages for code coverage

Signed-off-by: Shiva Krishna, Merla <smerla@nvidia.com>

---------

Signed-off-by: Shiva Krishna, Merla <smerla@nvidia.com>

Author: shivamerla

.github/workflows/golang.yml

@@ -67,7 +67,7 @@ jobs:
       uses: actions/setup-go@v5
       with:
         go-version: ${{ env.GOLANG_VERSION }}
-    - run: make test
+    - run: make coverage
   build:
     name: Build
     runs-on: ubuntu-latest

.gitignore

@@ -14,6 +14,7 @@ testbin/*
 
 # Output of the go coverage tool, specifically when used with LiteIDE
 *.out
+*.out.no-mocks
 
 # Kubernetes Generated files - skip generated files, except for vendored files
 !vendor/**/zz_generated.*

Makefile

@@ -112,9 +112,16 @@ vet: ## Run go vet against code.
 check-vendor: vendor
 	git diff --quiet HEAD -- go.mod go.sum
 
+COVERAGE_FILE := cover.out
+
+.PHONY: coverage
+coverage: test
+	cat $(COVERAGE_FILE) | grep -v "_mock.go" > $(COVERAGE_FILE).no-mocks
+	go tool cover -func=$(COVERAGE_FILE).no-mocks
+
 .PHONY: test
 test: manifests generate fmt vet envtest ## Run tests.
-	KUBEBUILDER_ASSETS="$(shell $(ENVTEST) use $(ENVTEST_K8S_VERSION) --bin-dir $(LOCALBIN) -p path)" go test $$(go list ./... | grep -v /e2e) -coverprofile cover.out
+	KUBEBUILDER_ASSETS="$(shell $(ENVTEST) use $(ENVTEST_K8S_VERSION) --bin-dir $(LOCALBIN) -p path)" go test $$(go list ./... | grep -v test/ | grep -v api/) -coverprofile $(COVERAGE_FILE)
 
 # Utilize Kind or modify the e2e tests to load the image locally, enabling compatibility with other vendors.
 .PHONY: test-e2e  # Run the e2e tests against a Kind k8s instance that is spun up.