Merge pull request #126 from MaksTech/php8

PHP 8 support

.travis.yml

@@ -4,6 +4,7 @@ php:
   - 7.2
   - 7.3
   - 7.4
+  - 8.0
 
 sudo: false
 
@@ -12,7 +13,7 @@ install: travis_retry composer install --prefer-source
 script: composer ci
 
 after_success:
-  - if [[ "`phpenv version-name`" != "7.4" ]]; then exit 0; fi
+  - if [[ "`phpenv version-name`" != "8.0" ]]; then exit 0; fi
   - vendor/bin/phpunit --coverage-clover coverage.clover
   - wget https://scrutinizer-ci.com/ocular.phar
   - php ocular.phar code-coverage:upload --format=php-clover coverage.clover

composer.json

@@ -28,7 +28,7 @@
 	},
 	"require-dev": {
 		"phpunit/phpunit": "~8.5.0",
-		"squizlabs/php_codesniffer": "~3.4.0",
+		"squizlabs/php_codesniffer": "~3.6.0",
 		"ockcyp/covers-validator": "~1.0"
 	},
 	"autoload": {

phpcs.xml

@@ -42,7 +42,10 @@
         </properties>
     </rule>
 
-    <rule ref="Generic.NamingConventions" />
+    <rule ref="Generic.NamingConventions">
+        <exclude name="Generic.NamingConventions.AbstractClassNamePrefix"/>
+        <exclude name="Generic.NamingConventions.InterfaceNameSuffix"/>
+    </rule>
     <rule ref="Generic.NamingConventions.CamelCapsFunctionName.ScopeNotCamelCaps">
         <!-- Exclude test methods like "testGivenInvalidInput_methodThrowsException". -->
         <exclude-pattern>tests.unit*Test\.php</exclude-pattern>

src/Comparer/ComparableComparer.php

@@ -15,7 +15,7 @@
 class ComparableComparer implements ValueComparer {
 
 	public function valuesAreEqual( $firstValue, $secondValue ): bool {
-		if ( method_exists( $firstValue, 'equals' ) ) {
+		if ( $firstValue && method_exists( $firstValue, 'equals' ) ) {
 			return $firstValue->equals( $secondValue );
 		}