feat(backup): Add backup/restore to the server

api/backup/copy_test.go

@@ -0,0 +1,104 @@
+package backup
+
+import (
+	"io/ioutil"
+	"os"
+	"path"
+	"path/filepath"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func listFiles(dir string) []string {
+	items := make([]string, 0)
+	filepath.Walk(dir, func(path string, info os.FileInfo, err error) error {
+		if path == dir {
+			return nil
+		}
+		items = append(items, path)
+		return nil
+	})
+
+	return items
+}
+
+func contains(t *testing.T, list []string, path string) {
+	assert.Contains(t, list, path)
+	copyContent, _ := ioutil.ReadFile(path)
+	assert.Equal(t, "content\n", string(copyContent))
+}
+
+func Test_copyFile_returnsError_whenSourceDoesNotExist(t *testing.T) {
+	tmpdir, _ := os.MkdirTemp("", "backup")
+	defer os.RemoveAll(tmpdir)
+
+	err := copyFile("does-not-exist", tmpdir)
+	assert.NotNil(t, err)
+}
+
+func Test_copyFile_shouldMakeAbackup(t *testing.T) {
+	tmpdir, _ := os.MkdirTemp("", "backup")
+	defer os.RemoveAll(tmpdir)
+
+	content := []byte("content")
+	ioutil.WriteFile(path.Join(tmpdir, "origin"), content, 0600)
+
+	err := copyFile(path.Join(tmpdir, "origin"), path.Join(tmpdir, "copy"))
+	assert.Nil(t, err)
+
+	copyContent, _ := ioutil.ReadFile(path.Join(tmpdir, "copy"))
+	assert.Equal(t, content, copyContent)
+}
+
+func Test_copyDir_shouldCopyAllFilesAndDirectories(t *testing.T) {
+	destination, _ := os.MkdirTemp("", "destination")
+	defer os.RemoveAll(destination)
+	err := copyDir("./test_assets/copy_test", destination)
+	assert.Nil(t, err)
+
+	createdFiles := listFiles(destination)
+
+	contains(t, createdFiles, filepath.Join(destination, "copy_test", "outer"))
+	contains(t, createdFiles, filepath.Join(destination, "copy_test", "dir", ".dotfile"))
+	contains(t, createdFiles, filepath.Join(destination, "copy_test", "dir", "inner"))
+}
+
+func Test_backupPath_shouldSkipWhenNotExist(t *testing.T) {
+	tmpdir, _ := os.MkdirTemp("", "backup")
+	defer os.RemoveAll(tmpdir)
+
+	err := copyPath("does-not-exists", tmpdir)
+	assert.Nil(t, err)
+
+	assert.Empty(t, listFiles(tmpdir))
+}
+
+func Test_backupPath_shouldCopyFile(t *testing.T) {
+	tmpdir, _ := os.MkdirTemp("", "backup")
+	defer os.RemoveAll(tmpdir)
+
+	content := []byte("content")
+	ioutil.WriteFile(path.Join(tmpdir, "file"), content, 0600)
+
+	os.MkdirAll(path.Join(tmpdir, "backup"), 0700)
+	err := copyPath(path.Join(tmpdir, "file"), path.Join(tmpdir, "backup"))
+	assert.Nil(t, err)
+
+	copyContent, err := ioutil.ReadFile(path.Join(tmpdir, "backup", "file"))
+	assert.Nil(t, err)
+	assert.Equal(t, content, copyContent)
+}
+
+func Test_backupPath_shouldCopyDir(t *testing.T) {
+	destination, _ := os.MkdirTemp("", "destination")
+	defer os.RemoveAll(destination)
+	err := copyPath("./test_assets/copy_test", destination)
+	assert.Nil(t, err)
+
+	createdFiles := listFiles(destination)
+
+	contains(t, createdFiles, filepath.Join(destination, "copy_test", "outer"))
+	contains(t, createdFiles, filepath.Join(destination, "copy_test", "dir", ".dotfile"))
+	contains(t, createdFiles, filepath.Join(destination, "copy_test", "dir", "inner"))
+}