From e7284d85140825b85f717384976589504e038bf6 Mon Sep 17 00:00:00 2001
From: Steve Boyd <emteknetnz@gmail.com>
Date: Wed, 13 Apr 2022 13:45:58 +1200
Subject: [PATCH] ENH PHP 8.1 compatibility

---
 src/Filter/SlugFilter.php          | 4 ++--
 tests/SegmentFieldTest.php         | 2 +-
 tests/SegmentFieldTestModifier.php | 4 ++--
 3 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/src/Filter/SlugFilter.php b/src/Filter/SlugFilter.php
index 4e52de5..d1fd5d9 100644
--- a/src/Filter/SlugFilter.php
+++ b/src/Filter/SlugFilter.php
@@ -33,11 +33,11 @@ public function filter($value)
         }
 
         foreach ($replacements as $regex => $replace) {
-            $value = preg_replace($regex, $replace, $value);
+            $value = preg_replace($regex ?? '', $replace ?? '', $value ?? '');
         }
 
         if ($this->getAllowMultibyte()) {
-            $value = rawurlencode($value);
+            $value = rawurlencode($value ?? '');
         }
 
         return $value;
diff --git a/tests/SegmentFieldTest.php b/tests/SegmentFieldTest.php
index c7af611..20ffddc 100644
--- a/tests/SegmentFieldTest.php
+++ b/tests/SegmentFieldTest.php
@@ -20,7 +20,7 @@ public function testSuggest()
         ));
 
         $encoded = $field->suggest($this->getNewRequestMock());
-        $decoded = json_decode($encoded);
+        $decoded = json_decode($encoded ?? '');
 
         $this->assertEquals('ARRAY-SUGGESTION', $decoded->suggestion);
         $this->assertEquals('array-preview', $decoded->preview);
diff --git a/tests/SegmentFieldTestModifier.php b/tests/SegmentFieldTestModifier.php
index 93714b8..58a6ab9 100644
--- a/tests/SegmentFieldTestModifier.php
+++ b/tests/SegmentFieldTestModifier.php
@@ -15,7 +15,7 @@ class SegmentFieldTestModifier extends AbstractSegmentFieldModifier
      */
     public function getSuggestion($value)
     {
-        return strtoupper($value);
+        return strtoupper($value ?? '');
     }
 
     /**
@@ -27,6 +27,6 @@ public function getSuggestion($value)
      */
     public function getPreview($value)
     {
-        return strtolower($value);
+        return strtolower($value ?? '');
     }
 }