Mono repo -> Master (#22553)

Combines the following repositories into one:

https://github.com/mattermost/mattermost-server
https://github.com/mattermost/mattermost-webapp
https://github.com/mattermost/focalboard
https://github.com/mattermost/mattermost-plugin-playbooks

server/boards/integrationtests/export_test.go

@@ -0,0 +1,70 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+package integrationtests
+
+import (
+	"bytes"
+	"testing"
+
+	"github.com/stretchr/testify/require"
+
+	"github.com/mattermost/mattermost-server/v6/server/boards/model"
+	"github.com/mattermost/mattermost-server/v6/server/boards/utils"
+)
+
+func TestExportBoard(t *testing.T) {
+	t.Run("export single board", func(t *testing.T) {
+		th := SetupTestHelper(t).InitBasic()
+		defer th.TearDown()
+
+		board := &model.Board{
+			ID:        utils.NewID(utils.IDTypeBoard),
+			TeamID:    "test-team",
+			Title:     "Export Test Board",
+			CreatedBy: th.GetUser1().ID,
+			Type:      model.BoardTypeOpen,
+			CreateAt:  utils.GetMillis(),
+			UpdateAt:  utils.GetMillis(),
+		}
+
+		block := &model.Block{
+			ID:        utils.NewID(utils.IDTypeCard),
+			ParentID:  board.ID,
+			Type:      model.TypeCard,
+			BoardID:   board.ID,
+			Title:     "Test card # for export",
+			CreatedBy: th.GetUser1().ID,
+			CreateAt:  utils.GetMillis(),
+			UpdateAt:  utils.GetMillis(),
+		}
+
+		babs := &model.BoardsAndBlocks{
+			Boards: []*model.Board{board},
+			Blocks: []*model.Block{block},
+		}
+
+		babs, resp := th.Client.CreateBoardsAndBlocks(babs)
+		th.CheckOK(resp)
+
+		// export the board to an in-memory archive file
+		buf, resp := th.Client.ExportBoardArchive(babs.Boards[0].ID)
+		th.CheckOK(resp)
+		require.NotNil(t, buf)
+
+		// import the archive file to team 0
+		resp = th.Client.ImportArchive(model.GlobalTeamID, bytes.NewReader(buf))
+		th.CheckOK(resp)
+		require.NoError(t, resp.Error)
+
+		// check for test card
+		boardsImported, err := th.Server.App().GetBoardsForUserAndTeam(th.GetUser1().ID, model.GlobalTeamID, true)
+		require.NoError(t, err)
+		require.Len(t, boardsImported, 1)
+		boardImported := boardsImported[0]
+		blocksImported, err := th.Server.App().GetBlocksForBoard(boardImported.ID)
+		require.NoError(t, err)
+		require.Len(t, blocksImported, 1)
+		require.Equal(t, block.Title, blocksImported[0].Title)
+	})
+}