WIP

Started creating some basic tests for the <include-pattern> element and
then run into some questions. Posted then in the link below and waiting
for answers:

PHPCSStandards#727 (comment)

Author: rodrigoprimo

tests/Core/Ruleset/ProcessRuleIncludePatternTest.php

@@ -0,0 +1,62 @@
+<?php
+/**
+ * Test handling of the <include-pattern> element.
+ *
+ * @copyright 2024 PHPCSStandards and contributors
+ * @license   https://github.com/PHPCSStandards/PHP_CodeSniffer/blob/master/licence.txt BSD Licence
+ */
+
+namespace PHP_CodeSniffer\Tests\Core\Ruleset;
+
+use PHP_CodeSniffer\Ruleset;
+use PHP_CodeSniffer\Tests\ConfigDouble;
+
+/**
+ * Test handling of the <include-pattern> element.
+ *
+ * @covers \PHP_CodeSniffer\Ruleset::processRule
+ */
+final class ProcessRuleIncludePatternTest extends AbstractRulesetTestCase
+{
+
+    /**
+     * The Ruleset object.
+     *
+     * @var \PHP_CodeSniffer\Ruleset
+     */
+    private static $ruleset;
+
+
+    /**
+     * Initialize the config and ruleset objects for this test.
+     *
+     * @before
+     *
+     * @return void
+     */
+    protected function initializeConfigAndRuleset()
+    {
+        if (isset(self::$ruleset) === false) {
+            // Set up the ruleset.
+            $standard      = __DIR__.'/ProcessRuleIncludePatternTest.xml';
+            $config        = new ConfigDouble(["--standard=$standard"]);
+            self::$ruleset = new Ruleset($config);
+        }
+
+    }//end initializeConfigAndRuleset()
+
+
+    /**
+     * Verify that <include-patterns> are set.
+     *
+     * @return void
+     */
+    public function testProcessRuleShouldSetIncludePatterns()
+    {
+        $expectedPatterns = [];
+        $this->assertSame($expectedPatterns, self::$ruleset->includePatterns);
+
+    }//end testProcessRuleShouldSetIncludePatterns()
+
+
+}//end class

tests/Core/Ruleset/ProcessRuleIncludePatternTest.xml

@@ -0,0 +1,10 @@
+<?xml version="1.0"?>
+<ruleset xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" name="ProcessRuleIncludePatternTest" xsi:noNamespaceSchemaLocation="https://schema.phpcodesniffer.com/phpcs.xsd">
+    <rule ref="Generic.Files.ByteOrderMark">
+        <include-pattern>./path/</include-pattern>
+        <include-pattern type="absolute">/absolute/path/</include-pattern>
+        <include-pattern type="relative">relative/path/</include-pattern>
+        <include-pattern type="invalidType">invalid/type/</include-pattern>
+    </rule>
+
+</ruleset>