Includes mmctl into the mono-repo (#23091)

* Includes mmctl into the mono-repo

* Update to use the new public module paths

* Adds docs check to the mmctl CI

* Fix public utils import path

* Tidy up modules

* Fix linter

* Update CI tasks to use the new file structure

* Update CI references

server/cmd/mmctl/commands/mmctl_test.go

@@ -0,0 +1,98 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+package commands
+
+import (
+	"github.com/mattermost/mattermost-server/server/v8/cmd/mmctl/client"
+	"github.com/mattermost/mattermost-server/server/v8/cmd/mmctl/mocks"
+	"github.com/mattermost/mattermost-server/server/v8/cmd/mmctl/printer"
+
+	"github.com/golang/mock/gomock"
+	"github.com/stretchr/testify/suite"
+
+	"github.com/mattermost/mattermost-server/server/v8/channels/api4"
+)
+
+var EnableEnterpriseTests string
+
+type MmctlUnitTestSuite struct {
+	suite.Suite
+	mockCtrl *gomock.Controller
+	client   *mocks.MockClient
+}
+
+func (s *MmctlUnitTestSuite) SetupTest() {
+	printer.Clean()
+	printer.SetFormat(printer.FormatJSON)
+
+	s.mockCtrl = gomock.NewController(s.T())
+	s.client = mocks.NewMockClient(s.mockCtrl)
+}
+
+func (s *MmctlUnitTestSuite) TearDownTest() {
+	s.mockCtrl.Finish()
+}
+
+type MmctlE2ETestSuite struct {
+	suite.Suite
+	th *api4.TestHelper
+}
+
+func (s *MmctlE2ETestSuite) SetupTest() {
+	printer.Clean()
+	printer.SetFormat(printer.FormatJSON)
+}
+
+func (s *MmctlE2ETestSuite) TearDownTest() {
+	// if a test helper was used, we run the teardown and remove it
+	// from the structure to avoid reusing the same helper between
+	// tests
+	if s.th != nil {
+		s.th.TearDown()
+		s.th = nil
+	}
+}
+
+func (s *MmctlE2ETestSuite) SetupTestHelper() *api4.TestHelper {
+	s.th = api4.Setup(s.T())
+	return s.th
+}
+
+func (s *MmctlE2ETestSuite) SetupEnterpriseTestHelper() *api4.TestHelper {
+	if EnableEnterpriseTests != "true" {
+		s.T().SkipNow()
+	}
+	s.th = api4.SetupEnterprise(s.T())
+	return s.th
+}
+
+// RunForSystemAdminAndLocal runs a test function for both SystemAdmin
+// and Local clients. Several commands work in the same way when used
+// by a fully privileged user and through the local mode, so this
+// helper facilitates checking both
+func (s *MmctlE2ETestSuite) RunForSystemAdminAndLocal(testName string, fn func(client.Client)) {
+	s.Run(testName+"/SystemAdminClient", func() {
+		fn(s.th.SystemAdminClient)
+	})
+
+	s.Run(testName+"/LocalClient", func() {
+		fn(s.th.LocalClient)
+	})
+}
+
+// RunForAllClients runs a test function for all the clients
+// registered in the TestHelper
+func (s *MmctlE2ETestSuite) RunForAllClients(testName string, fn func(client.Client)) {
+	s.Run(testName+"/Client", func() {
+		fn(s.th.Client)
+	})
+
+	s.Run(testName+"/SystemAdminClient", func() {
+		fn(s.th.SystemAdminClient)
+	})
+
+	s.Run(testName+"/LocalClient", func() {
+		fn(s.th.LocalClient)
+	})
+}