Add coverage workflow

.github/workflows/pull_request.yml

@@ -1,20 +1,33 @@
 name: test
-on: pull_request
+on:
+  workflow_dispatch:
+  pull_request:
+    branches:
+      - main
+  push:
+    branches:
+      - main
 jobs:
   test:
     name: Test Parade
-    runs-on: ubuntu-18.04
+    runs-on: ubuntu-20.04
     steps:
       - name: Checkout
         uses: actions/checkout@master
       - name: Setup go
-        uses: actions/setup-go@v1
+        uses: actions/setup-go@v2
         with:
-          go-version: "1.15.6"
+          go-version: "1.16.0"
       - name: Test all
         env:
           GO111MODULE: on
         run: |
-          export PATH=$PATH:$(go env GOPATH)/bin
-          go get golang.org/x/lint/golint
-          make test
+          make test-coverage
+      - name: Install goveralls
+        env:
+          GO111MODULE: off
+        run: go get github.com/mattn/goveralls
+      - name: Send coverage
+        uses: shogo82148/actions-goveralls@v1
+        with:
+          path-to-profile: covprofile

Makefile

@@ -17,7 +17,13 @@ test: lint
 crossbuild: test
 	gox -os="linux darwin windows" -arch="386 amd64" -output "bin/remo_{{.OS}}_{{.Arch}}/{{.Dir}}"
 
+mod:
+	go mod download
+
 clean:
 	go clean
 	rm -f $(BINARY_NAME)
-	rm -f bin/
+	rm -f bin/
+
+test-coverage: mod
+	go test -race -covermode atomic -coverprofile=covprofile ./...

README.md

@@ -3,6 +3,8 @@ Parade
 
 [![release badge](https://img.shields.io/github/v/release/chroju/parade.svg)](https://github.com/chroju/parade/releases)
 [![test badge](https://github.com/chroju/parade/workflows/test/badge.svg)](https://github.com/chroju/parade/actions?workflow=test)
+[![Coverage Status](https://coveralls.io/repos/github/chroju/parade/badge.svg?branch=main)](https://coveralls.io/github/chroju/parade?branch=main)
+
 
 Parade is a simple CLI tool for AWS SSM parameter store. Easy to read and write key values in your parameter store.