MM-16115: Channel name max length in /rename to match UI. (#11114)

app/command_channel_rename.go

@@ -67,10 +67,10 @@ func (me *RenameProvider) DoCommand(a *App, args *model.CommandArgs, message str
 			Text:         args.T("api.command_channel_rename.message.app_error"),
 			ResponseType: model.COMMAND_RESPONSE_TYPE_EPHEMERAL,
 		}
-	} else if len(message) > model.CHANNEL_NAME_UI_MAX_LENGTH {
+	} else if len(message) > model.CHANNEL_NAME_MAX_LENGTH {
 		return &model.CommandResponse{
 			Text: args.T("api.command_channel_rename.too_long.app_error", map[string]interface{}{
-				"Length": model.CHANNEL_NAME_UI_MAX_LENGTH,
+				"Length": model.CHANNEL_NAME_MAX_LENGTH,
 			}),
 			ResponseType: model.COMMAND_RESPONSE_TYPE_EPHEMERAL,
 		}

app/command_channel_rename_test.go

@@ -4,6 +4,7 @@
 package app
 
 import (
+	"strings"
 	"testing"
 
 	"github.com/stretchr/testify/assert"
@@ -24,13 +25,13 @@ func TestRenameProviderDoCommand(t *testing.T) {
 		Session:   model.Session{UserId: th.BasicUser.Id, TeamMembers: []*model.TeamMember{{TeamId: th.BasicTeam.Id, Roles: model.TEAM_USER_ROLE_ID}}},
 	}
 
-	// Blank text is a success
+	// Table Test for basic cases. Blank text in response indicates success
 	for msg, expected := range map[string]string{
 		"":                                    "api.command_channel_rename.message.app_error",
 		"o":                                   "api.command_channel_rename.too_short.app_error",
 		"joram":                               "",
-		"1234567890123456789012":  "",
+		"More than 22 chars but less than 64": "",
-		"12345678901234567890123": "api.command_channel_rename.too_long.app_error",
+		strings.Repeat("12345", 13):           "api.command_channel_rename.too_long.app_error",
 	} {
 		actual := rp.DoCommand(th.App, args, msg).Text
 		assert.Equal(t, expected, actual)

model/channel.go

@@ -25,7 +25,6 @@ const (
 	CHANNEL_DISPLAY_NAME_MAX_RUNES = 64
 	CHANNEL_NAME_MIN_LENGTH        = 2
 	CHANNEL_NAME_MAX_LENGTH        = 64
-	CHANNEL_NAME_UI_MAX_LENGTH     = 22
 	CHANNEL_HEADER_MAX_RUNES       = 1024
 	CHANNEL_PURPOSE_MAX_RUNES      = 250
 	CHANNEL_CACHE_SIZE             = 25000