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/api4/elasticsearch_test.go

@@ -0,0 +1,80 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+package api4
+
+import (
+	"encoding/json"
+	"net/http"
+	"testing"
+
+	"github.com/stretchr/testify/require"
+
+	"github.com/mattermost/mattermost-server/v6/model"
+)
+
+func TestElasticsearchTest(t *testing.T) {
+	th := Setup(t)
+	defer th.TearDown()
+
+	t.Run("as system user", func(t *testing.T) {
+		resp, err := th.Client.TestElasticsearch()
+		require.Error(t, err)
+		CheckForbiddenStatus(t, resp)
+	})
+
+	t.Run("as system admin", func(t *testing.T) {
+		resp, err := th.SystemAdminClient.TestElasticsearch()
+		require.Error(t, err)
+		CheckNotImplementedStatus(t, resp)
+	})
+
+	t.Run("invalid config", func(t *testing.T) {
+		cfg := &model.Config{}
+		cfg.SetDefaults()
+		cfg.ElasticsearchSettings.Password = nil
+
+		data, err := json.Marshal(cfg)
+		require.NoError(t, err)
+
+		resp, err := th.SystemAdminClient.DoAPIPost("/elasticsearch/test", string(data))
+		require.Error(t, err)
+		require.Equal(t, http.StatusBadRequest, resp.StatusCode)
+	})
+
+	t.Run("as restricted system admin", func(t *testing.T) {
+		th.App.UpdateConfig(func(cfg *model.Config) {
+			cfg.ElasticsearchSettings.SetDefaults()
+			*cfg.ExperimentalSettings.RestrictSystemAdmin = true
+		})
+
+		resp, err := th.SystemAdminClient.TestElasticsearch()
+		require.Error(t, err)
+		CheckForbiddenStatus(t, resp)
+	})
+}
+
+func TestElasticsearchPurgeIndexes(t *testing.T) {
+	th := Setup(t)
+	defer th.TearDown()
+
+	t.Run("as system user", func(t *testing.T) {
+		resp, err := th.Client.PurgeElasticsearchIndexes()
+		require.Error(t, err)
+		CheckForbiddenStatus(t, resp)
+	})
+
+	t.Run("as system admin", func(t *testing.T) {
+		resp, err := th.SystemAdminClient.PurgeElasticsearchIndexes()
+		require.Error(t, err)
+		CheckNotImplementedStatus(t, resp)
+	})
+
+	t.Run("as restricted system admin", func(t *testing.T) {
+		th.App.UpdateConfig(func(cfg *model.Config) { *cfg.ExperimentalSettings.RestrictSystemAdmin = true })
+
+		resp, err := th.SystemAdminClient.PurgeElasticsearchIndexes()
+		require.Error(t, err)
+		CheckForbiddenStatus(t, resp)
+	})
+}