Enforce channel display name limits on slash command (#7309)

app/command_channel_rename_test.go

@@ -0,0 +1,31 @@
+package app
+
+import (
+	"testing"
+
+	"github.com/mattermost/platform/model"
+	"github.com/stretchr/testify/assert"
+)
+
+func TestRenameProviderDoCommand(t *testing.T) {
+	th := Setup().InitBasic()
+
+	rp := RenameProvider{}
+	args := &model.CommandArgs{
+		T:         func(s string, args ...interface{}) string { return s },
+		ChannelId: th.BasicChannel.Id,
+		Session:   model.Session{UserId: th.BasicUser.Id, TeamMembers: []*model.TeamMember{&model.TeamMember{TeamId: th.BasicTeam.Id, Roles: model.ROLE_TEAM_USER.Id}}},
+	}
+
+	// Blank text is a 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":  "",
+		"12345678901234567890123": "api.command_channel_rename.too_long.app_error",
+	} {
+		actual := rp.DoCommand(args, msg).Text
+		assert.Equal(t, expected, actual)
+	}
+}