Tests/Ruleset: introduce an abstract base TestCase

Introduce an abstract base TestCase with some helper methods specifically for tests testing aspects of the `Ruleset` class.

Author: jrfnl

tests/Core/Ruleset/AbstractRulesetTestCase.php

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+<?php
+/**
+ * Test case with helper methods for tests for the Ruleset class.
+ *
+ * @author    Juliette Reinders Folmer <[email protected]>
+ * @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 PHPUnit\Framework\TestCase;
+
+abstract class AbstractRulesetTestCase extends TestCase
+{
+
+    /**
+     * The fully qualified name of the PHPCS runtime exception class.
+     *
+     * @var string
+     */
+    const RUNTIME_EXCEPTION = 'PHP_CodeSniffer\Exceptions\RuntimeException';
+
+
+    /**
+     * Asserts that an object has a specified property in a PHPUnit cross-version compatible manner.
+     *
+     * @param string $propertyName The name of the property.
+     * @param object $object       The object on which to check whether the property exists.
+     * @param string $message      Optional failure message to display.
+     *
+     * @return void
+     */
+    protected function assertXObjectHasProperty($propertyName, $object, $message='')
+    {
+        if (method_exists($this, 'assertObjectHasProperty') === true) {
+            $this->assertObjectHasProperty($propertyName, $object, $message);
+        } else {
+            // PHPUnit < 9.6.11.
+            $this->assertObjectHasAttribute($propertyName, $object, $message);
+        }
+
+    }//end assertXObjectHasProperty()
+
+
+    /**
+     * Asserts that an object does not have a specified property
+     * in a PHPUnit cross-version compatible manner.
+     *
+     * @param string $propertyName The name of the property.
+     * @param object $object       The object on which to check whether the property exists.
+     * @param string $message      Optional failure message to display.
+     *
+     * @return void
+     */
+    protected function assertXObjectNotHasProperty($propertyName, $object, $message='')
+    {
+        if (method_exists($this, 'assertObjectNotHasProperty') === true) {
+            $this->assertObjectNotHasProperty($propertyName, $object, $message);
+        } else {
+            // PHPUnit < 9.6.11.
+            $this->assertObjectNotHasAttribute($propertyName, $object, $message);
+        }
+
+    }//end assertXObjectNotHasProperty()
+
+
+    /**
+     * Helper method to tell PHPUnit to expect a PHPCS RuntimeException with a certain message
+     * in a PHPUnit cross-version compatible manner.
+     *
+     * @param string $message The expected exception message.
+     *
+     * @return void
+     */
+    protected function expectRuntimeExceptionMessage($message)
+    {
+        $this->expectException(self::RUNTIME_EXCEPTION);
+        $this->expectExceptionMessage($message);
+
+    }//end expectRuntimeExceptionMessage()
+
+
+    /**
+     * Helper method to tell PHPUnit to expect a PHPCS RuntimeException which matches a regex patten
+     * in a PHPUnit cross-version compatible manner.
+     *
+     * @param string $regex The regex which should match.
+     *
+     * @return void
+     */
+    protected function expectRuntimeExceptionRegex($regex)
+    {
+        if (method_exists($this, 'expectExceptionMessageMatches') === true) {
+            $this->expectException(self::RUNTIME_EXCEPTION);
+            $this->expectExceptionMessageMatches($regex);
+        } else {
+            // PHPUnit < 8.4.0.
+            $this->expectException(self::RUNTIME_EXCEPTION);
+            $this->expectExceptionMessageRegExp($regex);
+        }
+
+    }//end expectRuntimeExceptionRegex()
+
+
+}//end class