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

api/http/handler/backup/restore_test.go

@@ -0,0 +1,123 @@
+package backup
+
+import (
+	"bytes"
+	"context"
+	"fmt"
+	"io"
+	"mime/multipart"
+	"net/http"
+	"net/http/httptest"
+	"strings"
+	"testing"
+	"time"
+
+	portainer "github.com/portainer/portainer/api"
+	"github.com/portainer/portainer/api/adminmonitor"
+	"github.com/portainer/portainer/api/http/offlinegate"
+	i "github.com/portainer/portainer/api/internal/testhelpers"
+	"github.com/stretchr/testify/assert"
+)
+
+func Test_restoreArchive_usingCombinationOfPasswords(t *testing.T) {
+	tests := []struct {
+		name            string
+		backupPassword  string
+		restorePassword string
+		fails           bool
+	}{
+		{
+			name:            "empty password to both encrypt and decrypt",
+			backupPassword:  "",
+			restorePassword: "",
+			fails:           false,
+		},
+		{
+			name:            "same password to encrypt and decrypt",
+			backupPassword:  "secret",
+			restorePassword: "secret",
+			fails:           false,
+		},
+		{
+			name:            "different passwords to encrypt and decrypt",
+			backupPassword:  "secret",
+			restorePassword: "terces",
+			fails:           true,
+		},
+	}
+
+	for _, test := range tests {
+		t.Run(test.name, func(t *testing.T) {
+			datastore := i.NewDatastore(i.WithUsers([]portainer.User{}), i.WithEdgeJobs([]portainer.EdgeJob{}))
+			adminMonitor := adminmonitor.New(time.Hour, datastore, context.Background())
+
+			h := NewHandler(nil, datastore, offlinegate.NewOfflineGate(), "./test_assets/handler_test", func() {}, adminMonitor)
+
+			//backup
+			archive := backup(t, h, test.backupPassword)
+
+			//restore
+			w := httptest.NewRecorder()
+			r, err := prepareMultipartRequest(test.restorePassword, archive)
+			assert.Nil(t, err, "Shouldn't fail to write multipart form")
+
+			restoreErr := h.restore(w, r)
+			assert.Equal(t, test.fails, restoreErr != nil, "Didn't meet expectation of failing restore handler")
+		})
+	}
+}
+
+func Test_restoreArchive_shouldFailIfSystemWasAlreadyInitialized(t *testing.T) {
+	admin := portainer.User{
+		Role: portainer.AdministratorRole,
+	}
+	datastore := i.NewDatastore(i.WithUsers([]portainer.User{admin}), i.WithEdgeJobs([]portainer.EdgeJob{}))
+	adminMonitor := adminmonitor.New(time.Hour, datastore, context.Background())
+
+	h := NewHandler(nil, datastore, offlinegate.NewOfflineGate(), "./test_assets/handler_test", func() {}, adminMonitor)
+
+	//backup
+	archive := backup(t, h, "password")
+
+	//restore
+	w := httptest.NewRecorder()
+	r, err := prepareMultipartRequest("password", archive)
+	assert.Nil(t, err, "Shouldn't fail to write multipart form")
+
+	restoreErr := h.restore(w, r)
+	assert.NotNil(t, restoreErr, "Should fail, because system it already initialized")
+	assert.Equal(t, "Cannot restore already initialized instance", restoreErr.Message, "Should fail with certain error")
+}
+
+func backup(t *testing.T, h *Handler, password string) []byte {
+	r := httptest.NewRequest(http.MethodPost, "/", strings.NewReader(fmt.Sprintf(`{"password":"%s"}`, password)))
+	w := httptest.NewRecorder()
+
+	backupErr := h.backup(w, r)
+	assert.Nil(t, backupErr, "Backup should not fail")
+
+	response := w.Result()
+	archive, _ := io.ReadAll(response.Body)
+	return archive
+}
+
+func prepareMultipartRequest(password string, file []byte) (*http.Request, error) {
+	var body bytes.Buffer
+	w := multipart.NewWriter(&body)
+	err := w.WriteField("password", password)
+	if err != nil {
+		return nil, err
+	}
+	fw, err := w.CreateFormFile("file", "filename")
+	if err != nil {
+		return nil, err
+	}
+	io.Copy(fw, bytes.NewReader(file))
+
+	r := httptest.NewRequest(http.MethodPost, "http://localhost/", &body)
+	r.Header.Set("Content-Type", w.FormDataContentType())
+
+	w.Close()
+
+	return r, nil
+}