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/channels/app/slashcommands/command_invite_people_test.go

@@ -0,0 +1,42 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+package slashcommands
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+
+	"github.com/mattermost/mattermost-server/v6/model"
+)
+
+func TestInvitePeopleProvider(t *testing.T) {
+	th := setup(t).initBasic()
+	defer th.tearDown()
+
+	th.App.UpdateConfig(func(cfg *model.Config) {
+		*cfg.EmailSettings.SendEmailNotifications = true
+		*cfg.ServiceSettings.EnableEmailInvitations = true
+	})
+
+	cmd := InvitePeopleProvider{}
+
+	notTeamUser := th.createUser()
+
+	// Test without required permissions
+	args := &model.CommandArgs{
+		T:         func(s string, args ...any) string { return s },
+		ChannelId: th.BasicChannel.Id,
+		TeamId:    th.BasicTeam.Id,
+		UserId:    notTeamUser.Id,
+	}
+
+	actual := cmd.DoCommand(th.App, th.Context, args, model.NewId()+"@simulator.amazonses.com")
+	assert.Equal(t, "api.command_invite_people.permission.app_error", actual.Text)
+
+	// Test with required permissions.
+	args.UserId = th.BasicUser.Id
+	actual = cmd.DoCommand(th.App, th.Context, args, model.NewId()+"@simulator.amazonses.com")
+	assert.Equal(t, "api.command.invite_people.sent", actual.Text)
+}