Adds E2E coverage reporting

Signed-off-by: Mikalai Radchuk <mradchuk@redhat.com>

.github/workflows/e2e.yaml

@@ -23,3 +23,10 @@ jobs:
     - name: Run e2e tests
       run: |
         make e2e
+
+    - uses: codecov/codecov-action@v3
+      with:
+        files: e2e-cover.out
+        flags: e2e
+        fail_ci_if_error: true
+        functionalities: fixes

.github/workflows/unit-test.yaml

@@ -25,5 +25,6 @@ jobs:
     - uses: codecov/codecov-action@v3
       with:
         files: cover.out
+        flags: unit
         fail_ci_if_error: true
         functionalities: fixes

.gitignore

@@ -14,8 +14,9 @@ Dockerfile.cross
 # Test binary, build with `go test -c`
 *.test
 
-# Output of the go coverage tool, specifically when used with LiteIDE
+# Output of the go coverage tools
 *.out
+coverage
 
 # Release output
 dist/**
@@ -33,4 +34,3 @@ install.sh
 *~
 \#*\#
 .\#*
-

Makefile

@@ -24,6 +24,8 @@ KIND_CLUSTER_NAME ?= operator-controller
 
 CONTAINER_RUNTIME ?= docker
 
+KUSTOMIZE_BUILD_DIR ?= config/default
+
 # Get the currently used golang install path (in GOPATH/bin, unless GOBIN is set)
 ifeq (,$(shell go env GOBIN))
 GOBIN=$(shell go env GOPATH)/bin
@@ -103,7 +105,16 @@ test-unit: $(SETUP_ENVTEST) ## Run the unit tests
 	eval $$($(SETUP_ENVTEST) use -p env $(ENVTEST_VERSION)) && go test -tags $(GO_BUILD_TAGS) -count=1 -short $(UNIT_TEST_DIRS) -coverprofile cover.out
 
 e2e: KIND_CLUSTER_NAME=operator-controller-e2e
-e2e: run kind-load-test-artifacts test-e2e kind-cluster-cleanup ## Run e2e test suite on local kind cluster
+e2e: KUSTOMIZE_BUILD_DIR=config/e2e
+e2e: GO_BUILD_FLAGS=-cover
+e2e: run kind-load-test-artifacts test-e2e ## Run e2e test suite on local kind cluster
+	# Coverage-instrumented binary produces coverage on termination, so we scale down the manager before gathering the coverage
+	kubectl -n $(OPERATOR_CONTROLLER_NAMESPACE) scale deployment/operator-controller-controller-manager --replicas=0
+	kubectl -n $(OPERATOR_CONTROLLER_NAMESPACE) run pvc-copy --image busybox --restart=Never --override-type strategic --overrides='{"spec": {"volumes": [{"name": "data", "persistentVolumeClaim": {"claimName": "e2e-coverage"}}], "containers": [{"name": "pvc-copy", "securityContext": {"runAsUser": 65532, "runAsNonRoot": true, "allowPrivilegeEscalation": false, "seccompProfile": {"type": "RuntimeDefault"}, "capabilities": {"drop": ["ALL"]}}, "volumeMounts": [{"name": "data", "mountPath": "/data"}]}]}}' -- sleep infinity
+	kubectl -n $(OPERATOR_CONTROLLER_NAMESPACE) wait --for=condition=ready pod pvc-copy
+	kubectl -n $(OPERATOR_CONTROLLER_NAMESPACE) cp pvc-copy:/data/ ./coverage/
+	go tool covdata textfmt -i=./coverage/ -o e2e-cover.out
+	$(MAKE) kind-cluster-cleanup KIND_CLUSTER_NAME=$(KIND_CLUSTER_NAME)
 
 kind-load: $(KIND) ## Loads the currently constructed image onto the cluster
 	$(KIND) load docker-image $(IMG) --name $(KIND_CLUSTER_NAME)
@@ -174,7 +185,7 @@ release: $(GORELEASER) ## Runs goreleaser for the operator-controller. By defaul
 
 quickstart: export MANIFEST="https://github.com/operator-framework/operator-controller/releases/download/$(VERSION)/operator-controller.yaml"
 quickstart: $(KUSTOMIZE) generate ## Generate the installation release manifests and scripts
-	$(KUSTOMIZE) build config/default | sed "s/:devel/:$(VERSION)/g" > operator-controller.yaml
+	$(KUSTOMIZE) build $(KUSTOMIZE_BUILD_DIR) | sed "s/:devel/:$(VERSION)/g" > operator-controller.yaml
 	envsubst '$$CATALOGD_VERSION,$$CERT_MGR_VERSION,$$RUKPAK_VERSION,$$MANIFEST' < scripts/install.tpl.sh > install.sh
 
 ##@ Deployment
@@ -186,7 +197,7 @@ endif
 .PHONY: install
 install: export MANIFEST="./operator-controller.yaml"
 install: manifests $(KUSTOMIZE) generate ## Install CRDs into the K8s cluster specified in ~/.kube/config.
-	$(KUSTOMIZE) build config/default > operator-controller.yaml
+	$(KUSTOMIZE) build $(KUSTOMIZE_BUILD_DIR) > operator-controller.yaml
 	envsubst '$$CATALOGD_VERSION,$$CERT_MGR_VERSION,$$RUKPAK_VERSION,$$MANIFEST' < scripts/install.tpl.sh | bash -s
 
 .PHONY: uninstall
@@ -196,8 +207,8 @@ uninstall: manifests $(KUSTOMIZE) ## Uninstall CRDs from the K8s cluster specifi
 .PHONY: deploy
 deploy: manifests $(KUSTOMIZE) ## Deploy controller to the K8s cluster specified in ~/.kube/config.
 	cd config/manager && $(KUSTOMIZE) edit set image controller=${IMG}
-	$(KUSTOMIZE) build config/default | kubectl apply -f -
+	$(KUSTOMIZE) build $(KUSTOMIZE_BUILD_DIR) | kubectl apply -f -
 
 .PHONY: undeploy
 undeploy: ## Undeploy controller from the K8s cluster specified in ~/.kube/config. Call with ignore-not-found=true to ignore resource not found errors during deletion.
-	$(KUSTOMIZE) build config/default | kubectl delete --ignore-not-found=$(ignore-not-found) -f -
+	$(KUSTOMIZE) build $(KUSTOMIZE_BUILD_DIR) | kubectl delete --ignore-not-found=$(ignore-not-found) -f -

config/e2e/kustomization.yaml

@@ -0,0 +1,8 @@
+namespace: operator-controller-system
+
+resources:
+- ../default
+- manager_e2e_coverage_pvc.yaml
+
+patches:
+- path: manager_e2e_coverage_patch.yaml

config/e2e/manager_e2e_coverage_patch.yaml

@@ -0,0 +1,21 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: controller-manager
+  namespace: system
+spec:
+  template:
+    spec:
+      containers:
+      - name: kube-rbac-proxy
+      - name: manager
+        env:
+        - name: GOCOVERDIR
+          value: /e2e-coverage
+        volumeMounts:
+        - name: e2e-coverage-volume
+          mountPath: /e2e-coverage
+      volumes:
+      - name: e2e-coverage-volume
+        persistentVolumeClaim:
+          claimName: e2e-coverage

config/e2e/manager_e2e_coverage_pvc.yaml

@@ -0,0 +1,10 @@
+apiVersion: v1
+kind: PersistentVolumeClaim
+metadata:
+  name: e2e-coverage
+spec:
+  accessModes:
+    - ReadWriteOnce
+  resources:
+    requests:
+      storage: 64Mi