Tests/PolyfilledTestCase: make compatible with PHPUnit Polyfills 3.x

As the available polyfill traits are different between the 1.x, 2.x and 3.x versions of the PHPUnit Polyfills, a different class definition is needed for PHPUnit Polyfills 3, which removes two traits (one used in this class) and introduces three new traits.

This commit adds the version-conditional class declaration for PHPUnit Polyfills 3.0.

Ref:
* https://github.com/Yoast/PHPUnit-Polyfills/releases/tag/3.0.0

Author: jrfnl

Tests/PolyfilledTestCase.php

@@ -17,6 +17,7 @@
 use PHPCSUtils\Tests\ExpectWithConsecutiveArgs;
 use PHPCSUtils\TestUtils\UtilityMethodTestCase;
 use Yoast\PHPUnitPolyfills\Autoload;
+use Yoast\PHPUnitPolyfills\Polyfills\AssertArrayWithListKeys;
 use Yoast\PHPUnitPolyfills\Polyfills\AssertClosedResource;
 use Yoast\PHPUnitPolyfills\Polyfills\AssertEqualsSpecializations;
 use Yoast\PHPUnitPolyfills\Polyfills\AssertFileDirectory;
@@ -27,15 +28,56 @@
 use Yoast\PHPUnitPolyfills\Polyfills\AssertIsType;
 use Yoast\PHPUnitPolyfills\Polyfills\AssertNumericType;
 use Yoast\PHPUnitPolyfills\Polyfills\AssertObjectEquals;
+use Yoast\PHPUnitPolyfills\Polyfills\AssertObjectNotEquals;
 use Yoast\PHPUnitPolyfills\Polyfills\AssertObjectProperty;
 use Yoast\PHPUnitPolyfills\Polyfills\AssertStringContains;
 use Yoast\PHPUnitPolyfills\Polyfills\EqualToSpecializations;
 use Yoast\PHPUnitPolyfills\Polyfills\ExpectException;
 use Yoast\PHPUnitPolyfills\Polyfills\ExpectExceptionMessageMatches;
 use Yoast\PHPUnitPolyfills\Polyfills\ExpectExceptionObject;
 use Yoast\PHPUnitPolyfills\Polyfills\ExpectPHPException;
+use Yoast\PHPUnitPolyfills\Polyfills\ExpectUserDeprecation;
 
-if (\version_compare(Autoload::VERSION, '2.0.0', '>=')) {
+if (\version_compare(Autoload::VERSION, '3.0.0', '>=')) {
+    /**
+     * Abstract utility method base test case which includes all available polyfills (PHPUnit Polyfills 3.x compatible).
+     *
+     * This test case includes all polyfills from the PHPUnit Polyfill library to make them
+     * available to the tests.
+     *
+     * Generally speaking, this testcase only needs to be used when the concrete test class will
+     * use functionality which has changed in PHPUnit cross-version.
+     * In all other cases, the `UtilityMethodTestCase` can be extended directly.
+     *
+     * {@internal The list of included polyfill traits should be reviewed after each new
+     * release of the PHPUnit Polyfill library.}
+     *
+     * @since 1.1.0
+     */
+    abstract class PolyfilledTestCase extends UtilityMethodTestCase
+    {
+        // PHPCSUtils native helpers.
+        use AssertPropertySame;
+        use ExpectWithConsecutiveArgs;
+
+        // PHPUnit Polyfills.
+        use AssertArrayWithListKeys;
+        use AssertClosedResource;
+        use AssertEqualsSpecializations;
+        use AssertFileEqualsSpecializations;
+        use AssertIgnoringLineEndings;
+        use AssertionRenames;
+        use AssertIsList;
+        use AssertIsType;
+        use AssertObjectEquals;
+        use AssertObjectNotEquals;
+        use AssertObjectProperty;
+        use AssertStringContains;
+        use EqualToSpecializations;
+        use ExpectExceptionMessageMatches;
+        use ExpectUserDeprecation;
+    }
+} elseif (\version_compare(Autoload::VERSION, '2.0.0', '>=')) {
     /**
      * Abstract utility method base test case which includes all available polyfills (PHPUnit Polyfills 2.x compaible).
      *