feat: add codecov support

.github/workflows/test.yml

@@ -12,4 +12,6 @@ jobs:
         with:
           go-version: 1.16
       - name: Test
-        run: go test -v ./...
+        run: make test
+      - name: Upload coverage to Codecov
+        run: bash <(curl -s https://codecov.io/bash)

.gitignore

@@ -18,3 +18,4 @@
 .idea
 *.iml
 dist
+coverage.txt

Makefile

@@ -1,5 +1,9 @@
-.PHONY: lint snapshot
+.PHONY: lint test snapshot
 lint:
 	golangci-lint run
+
+test:
+	go test -coverprofile=coverage.txt -covermode=atomic
+
 snapshot:
 	goreleaser --snapshot --rm-dist

README.md

@@ -1,9 +1,9 @@
 # Clash Exporter for Prometheus
 
-[![GitHub release (latest by date)](https://img.shields.io/github/v/release/elonzh/clash_exporter?style=flat-square)](https://github.com/elonzh/clash_exporter/releases)
 [![Docker Pulls](https://img.shields.io/docker/pulls/elonzh/clash_exporter?style=flat-square)](https://hub.docker.com/r/elonzh/clash_exporter)
-[![GolangCI](https://golangci.com/badges/github.com/elonzh/clash_exporter.svg)](https://golangci.com)
-[![GitHub Workflow Status](https://img.shields.io/github/workflow/status/elonzh/clash_exporter/build?style=flat-square)](https://github.com/elonzh/clash_exporter/actions)
+[![GitHub release (latest by date)](https://img.shields.io/github/v/release/elonzh/clash_exporter?style=flat-square)](https://github.com/elonzh/clash_exporter/releases)
+[![GitHub Workflow Status](https://img.shields.io/github/workflow/status/elonzh/clash_exporter/goreleaser?style=flat-square)](https://github.com/elonzh/clash_exporter/actions)
+[![codecov](https://img.shields.io/codecov/c/github/elonzh/clash_exporter?style=flat-square&token=w1ngj45JWz)](https://codecov.io/gh/elonzh/clash_exporter)
 [![GitHub license](https://img.shields.io/github/license/elonzh/clash_exporter?style=flat-square)](https://github.com/elonzh/clash_exporter/blob/main/LICENSE)
 
 This is a simple server that scrapes [Clash](https://github.com/Dreamacro/clash) stats and exports them via HTTP for