Test against php 8.1, 8.2 and 8.3

.github/workflows/test.yml

@@ -9,16 +9,12 @@ jobs:
       matrix:
         operating-system: ['ubuntu-latest']
         php-versions:
-        - '5.4'
-        - '5.5'
-        - '5.6'
-        - '7.0'
-        - '7.1'
-        - '7.2'
         - '7.3'
         - '7.4'
         - '8.0'
- #      - '8.1'
+        - '8.1'
+        - '8.2'
+        - '8.3'
     steps:
       - name: Checkout
         uses: actions/checkout@v2
@@ -70,4 +66,4 @@ jobs:
 #          composer install --no-progress
 #      - name: Run tests
 #        run: |
-#          composer run-script test
+#          composer run-script test

.gitignore

@@ -3,4 +3,5 @@ composer.phar
 composer.lock
 vendor
 .idea/
-.phpunit.result.cache
+.phpunit.result.cache
+/.phpunit.cache

phpunit.xml

@@ -1,14 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<phpunit backupGlobals="false"
-         backupStaticAttributes="false"
-         colors="true"
-         convertErrorsToExceptions="true"
-         convertNoticesToExceptions="true"
-         convertWarningsToExceptions="true"
-         processIsolation="false"
-         stopOnFailure="false"
-         bootstrap="tests/bootstrap.php"
->
+<phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" backupGlobals="false" colors="true" processIsolation="false" stopOnFailure="false" bootstrap="tests/bootstrap.php" xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/10.4/phpunit.xsd" cacheDirectory=".phpunit.cache" backupStaticProperties="false">
   <testsuites>
     <testsuite name="Valitron Test Suite">
       <directory suffix="Test.php">tests/Valitron</directory>

tests/Valitron/StopOnFirstFailTest.php

@@ -2,7 +2,7 @@
 
 use Valitron\Validator;
 
-class StopOnFirstFail extends BaseTestCase
+class StopOnFirstFailTest extends BaseTestCase
 {
     public function testStopOnFirstFail()
     {

tests/Valitron/ValidateAddInstanceRuleTest.php

@@ -115,6 +115,6 @@ public function testUniqueRuleName()
         $v->addInstanceRule("foo_rule", function () {
         });
         $u = $v->getUniqueRuleName("foo");
-        $this->assertRegExp("/^foo_rule_[0-9]{1,5}$/", $u);
+        $this->assertMatchesRegularExpression("/^foo_rule_[0-9]{1,5}$/", $u);
     }
 }

tests/Valitron/ValidateTest.php

@@ -2602,7 +2602,7 @@ public function testError($expected, $input, $test, $message)
         $this->assertEquals(array('test' => array($expected)), $v->errors());
     }
 
-    public function dataProviderFor_testError()
+    public static function dataProviderFor_testError()
     {
         return array(
             array(