test: Add Codecov (#76)

.github/workflows/test.yaml

@@ -31,7 +31,14 @@ jobs:
       - name: Check go.mod Tidiness
         run: make mod-tidy
       - name: Test
-        run: make test
+        run: make test-coverage
+      - name: Upload coverage reports to Codecov
+        # https://github.com/codecov/codecov-action/releases/tag/v3.1.4
+        uses: codecov/codecov-action@eaaf4bedf32dbdc6b720b63067d99c4d77d6047d
+        env:
+          CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}
+        with:
+          directory: .coverage
     timeout-minutes: 10
     strategy:
       matrix:

.gitignore

@@ -13,6 +13,7 @@
 
 # Output of the go coverage tool, specifically when used with LiteIDE
 *.out
+.coverage
 
 # Dependency directories (remove the comment below to include it)
 # vendor/

Makefile

@@ -1,3 +1,10 @@
+.DEFAULT_GOAL := help
+
+MKFILE_PATH := $(abspath $(lastword $(MAKEFILE_LIST)))
+MKFILE_DIR := $(dir $(MKFILE_PATH))
+# In seconds
+TIMEOUT = 60
+
 # Parse Makefile and display the help
 help: ## Show help
 	@grep -E '^[a-zA-Z_-]+:.*?## .*$$' $(MAKEFILE_LIST) | sort | awk 'BEGIN {FS = ":.*?## "}; {printf "\033[36m%-30s\033[0m %s\n", $$1, $$2}'
@@ -12,9 +19,25 @@ upload-image-kind: docker-build
 .PHONY: upload-image-kind
 
 test: ## Run tests
-	go test -v -count=1 -race -timeout 60s ./...
+	go test -v -count=1 -race -timeout $(TIMEOUT)s ./...
 .PHONY: test
 
+# Coverage
+COVERAGE_MODE    	= atomic
+COVERAGE_PROFILE 	= coverage.out
+COVERAGE_REPORT_DIR = .coverage
+COVERAGE_REPORT_DIR_ABS  = $(MKFILE_DIR)/$(COVERAGE_REPORT_DIR)
+COVERAGE_REPORT_FILE_ABS = $(COVERAGE_REPORT_DIR_ABS)/$(COVERAGE_PROFILE)
+$(COVERAGE_REPORT_DIR):
+	mkdir -p $(COVERAGE_REPORT_DIR)
+clean-report-dir: $(COVERAGE_REPORT_DIR)
+	test $(COVERAGE_REPORT_DIR) && rm -f $(COVERAGE_REPORT_DIR)/*
+test-coverage: $(COVERAGE_REPORT_DIR) clean-report-dir  ## Test with coverage enabled
+	set -e ; \
+	go test -count=1 -race -timeout $(TIMEOUT)s -coverpkg=./... -covermode=$(COVERAGE_MODE) -coverprofile="$(COVERAGE_REPORT_FILE_ABS)" ./... ; \
+	go tool cover -html="$(COVERAGE_REPORT_FILE_ABS)" -o "$(COVERAGE_REPORT_DIR_ABS)/coverage.html";
+.PHONY: test-coverage clean-report-dir
+
 build: ## Build the module
 	go build ./...
 .PHONY: build