From 2f7dc7a7a8c79333171c20b132a6632007fda99e Mon Sep 17 00:00:00 2001
From: Robbie Averill <robbie@silverstripe.com>
Date: Mon, 19 Mar 2018 10:03:32 +1300
Subject: [PATCH] Clear hints cache for SS 4.1 only if method exists (SS 4.0
 support)

---
 tests/php/SiteTreeSubsitesTest.php | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/tests/php/SiteTreeSubsitesTest.php b/tests/php/SiteTreeSubsitesTest.php
index 61521a5..f14e778 100644
--- a/tests/php/SiteTreeSubsitesTest.php
+++ b/tests/php/SiteTreeSubsitesTest.php
@@ -267,8 +267,12 @@ class SiteTreeSubsitesTest extends BaseSubsiteTest
         $this->assertNotContains(TestClassB::class, $classes);
 
         Subsite::changeSubsite($s2);
-        $cmsmain->getHintsCache()->clear();
+        // SS 4.1 and above
+        if ($cmsmain->hasMethod('getHintsCache')) {
+            $cmsmain->getHintsCache()->clear();
+        }
         $hints = Convert::json2array($cmsmain->SiteTreeHints());
+
         $classes = $hints['Root']['disallowedChildren'];
         $this->assertNotContains(ErrorPage::class, $classes);
         $this->assertNotContains(TestClassA::class, $classes);