Add go tests GitHub workflow

.github/workflows/go-tests.yml

@@ -0,0 +1,27 @@
+name: Go Tests
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+    branches:
+      - main
+
+jobs:
+  go-tests:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      - name: Setup Golang
+        uses: actions/setup-go@v3
+        with:
+          go-version-file: go.mod
+
+      - run: go version
+
+      - name: Run GARM Go Tests
+        run: make test

Makefile

@@ -1,14 +1,21 @@
 SHELL := bash
 
-.PHONY : build-static
-
 IMAGE_TAG = garm-build
 
 USER_ID=$(shell ((docker --version | grep -q podman) && echo "0" || id -u))
 USER_GROUP=$(shell ((docker --version | grep -q podman) && echo "0" || id -g))
 
+GO_PACKAGES?=$(shell (go list ./... | grep -v 'vendor'))
+
+default: build-static
+
+.PHONY : build-static
 build-static:
 	@echo Building garm
 	docker build --tag $(IMAGE_TAG) .
 	docker run --rm -e USER_ID=$(USER_ID) -e USER_GROUP=$(USER_GROUP) -v $(PWD):/build/garm:z $(IMAGE_TAG) /build-static.sh
 	@echo Binaries are available in $(PWD)/bin
+
+.PHONY: test
+test:
+	go test $(GO_PACKAGES) -v $(TEST_ARGS) -timeout=15m -parallel=4

README.md

@@ -1,5 +1,7 @@
 #  GitHub Actions Runners Manager (garm)
 
+![Go Tests](https://github.com/cloudbase/garm/actions/workflows/go-tests.yml/badge.svg)
+
 Welcome to garm!
 
 Garm enables you to create and automatically maintain pools of [self-hosted GitHub runners](https://docs.github.com/en/actions/hosting-your-own-runners/about-self-hosted-runners), with autoscaling that can be used inside your github workflow runs.