TUN-7447: Add a cover build to report code coverage

Makefile

@@ -140,6 +140,7 @@ container:
 generate-docker-version:
 	echo latest $(VERSION) > versions
 
+
 .PHONY: test
 test: vet
 ifndef CI
@@ -147,9 +148,18 @@ ifndef CI
 else
 	@mkdir -p .cover
 	go test -v -mod=vendor -race $(LDFLAGS) -coverprofile=".cover/c.out" ./...
-	go tool cover -html ".cover/c.out" -o .cover/all.html
 endif
 
+.PHONY: cover
+cover:
+	@echo ""
+	@echo "=====> Total test coverage: <====="
+	@echo ""
+	# Print the overall coverage here for quick access.
+	$Q go tool cover -func ".cover/c.out" | grep "total:" | awk '{print $$3}'
+	# Generate the HTML report that can be viewed from the browser in CI.
+	$Q go tool cover -html ".cover/c.out" -o .cover/all.html
+
 .PHONY: test-ssh-server
 test-ssh-server:
 	docker-compose -f ssh_server_tests/docker-compose.yml up

cfsetup.yaml

@@ -29,6 +29,12 @@ buster: &buster
       - export GOARCH=amd64
       - export FIPS=true
       - make cloudflared
+  cover: 
+    build_dir: *build_dir
+    builddeps: *build_deps
+    pre-cache: *build_pre_cache
+    post-cache: 
+     - make cover
   # except FIPS (handled in github-fips-release-pkgs) and macos (handled in github-release-macos-amd64)
   github-release-pkgs:
     build_dir: *build_dir