chore(ci): install restic in test env

.github/workflows/ci.yml

@@ -4,11 +4,25 @@ on:
   push:
     branches: [master]
 
+env: 
+  RESTIC_VERSION: "0.17.1"
+
 jobs:
   test:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3
+
+      - name: Install restic@${{ env.RESTIC_VERSION }}
+        run: |
+          mkdir -p tools/restic
+          curl --fail --location --silent --show-error --output tools/restic/restic.bz2 \
+            "https://github.com/restic/restic/releases/download/v${RESTIC_VERSION}/restic_${RESTIC_VERSION}_linux_amd64.bz2"
+          bzip2 -d tools/restic/restic.bz2
+          chmod +x tools/restic/restic
+          echo "$GITHUB_WORKSPACE/tools/restic" >> "$GITHUB_PATH"
+      - run: restic version
+
       - uses: actions/setup-go@v3
         with:
           go-version: '^1.21'

cmd/backup_test.go

@@ -0,0 +1,75 @@
+package cmd
+
+import (
+	"os"
+	"path"
+	"testing"
+
+	"github.com/spf13/viper"
+	"github.com/stretchr/testify/assert"
+	"gopkg.in/yaml.v3"
+)
+
+func runCmd(t *testing.T, args ...string) error {
+	t.Helper()
+
+	viper.Reset()
+	rootCmd.SetArgs(args)
+
+	err := rootCmd.Execute()
+	return err
+}
+
+func TestBackupCmd(t *testing.T) {
+	t.Run("simple local backup and restore", func(t *testing.T) {
+		workDir := t.TempDir()
+
+		// Prepare content to be backed up
+		locationDir := path.Join(workDir, "my-location")
+		err := os.Mkdir(locationDir, 0750)
+		assert.Nil(t, err)
+		err = os.WriteFile(path.Join(locationDir, "back-me-up.txt"), []byte("hello world"), 0640)
+		assert.Nil(t, err)
+
+		// Write config file
+		config, err := yaml.Marshal(map[string]interface{}{
+			"version": 2,
+			"locations": map[string]map[string]interface{}{
+				"my-location": {
+					"type": "local",
+					"from": []string{locationDir},
+					"to":   []string{"test"},
+				},
+			},
+			"backends": map[string]map[string]interface{}{
+				"test": {
+					"type": "local",
+					"path": path.Join(workDir, "test-backend"),
+					"key":  "supersecret",
+				},
+			},
+		})
+		assert.Nil(t, err)
+		configPath := path.Join(workDir, ".autorestic.yml")
+		err = os.WriteFile(configPath, config, 0640)
+		assert.Nil(t, err)
+
+		// Init repo (not initialized by default)
+		err = runCmd(t, "exec", "--ci", "-a", "-c", configPath, "init")
+		assert.Nil(t, err)
+
+		// Do the backup
+		err = runCmd(t, "backup", "--ci", "-a", "-c", configPath)
+		assert.Nil(t, err)
+
+		// Restore in a separate dir
+		restoreDir := path.Join(workDir, "restore")
+		err = runCmd(t, "restore", "--ci", "-c", configPath, "-l", "my-location", "--to", restoreDir)
+		assert.Nil(t, err)
+
+		// Check restored file
+		restoredContent, err := os.ReadFile(path.Join(restoreDir, locationDir, "back-me-up.txt"))
+		assert.Nil(t, err)
+		assert.Equal(t, "hello world", string(restoredContent))
+	})
+}