Create VersionUtil class

plugins/woocommerce/src/Internal/DependencyManagement/ServiceProviders/FeaturesServiceProvider.php

@@ -6,6 +6,7 @@ use Automattic\WooCommerce\Internal\DependencyManagement\AbstractServiceProvider
 use Automattic\WooCommerce\Internal\Features\FeaturesController;
 use Automattic\WooCommerce\Proxies\LegacyProxy;
 use Automattic\WooCommerce\Utilities\PluginUtil;
+use Automattic\WooCommerce\Utilities\VersionUtil;
 
 /**
  * Service provider for the features enabling/disabling/compatibility engine.
@@ -19,6 +20,7 @@ class FeaturesServiceProvider extends AbstractServiceProvider {
 	 */
 	protected $provides = array(
 		FeaturesController::class,
+		VersionUtil::class,
 	);
 
 	/**
@@ -27,5 +29,7 @@ class FeaturesServiceProvider extends AbstractServiceProvider {
 	public function register() {
 		$this->share( FeaturesController::class )
 			->addArguments( array( LegacyProxy::class, PluginUtil::class ) );
+		$this->share( VersionUtil::class )
+			->addArguments( array( LegacyProxy::class ) );
 	}
 }

plugins/woocommerce/src/Utilities/VersionUtil.php

@@ -0,0 +1,72 @@
+<?php
+
+namespace Automattic\WooCommerce\Utilities;
+
+use Automattic\Jetpack\Constants;
+use Automattic\WooCommerce\Proxies\LegacyProxy;
+
+/**
+ * Class VersionUtil
+ *
+ * @since x.x.x
+ */
+class VersionUtil {
+
+	/** @var LegacyProxy */
+	protected $proxy;
+
+	/**
+	 * Init this class instance.
+	 *
+	 * @since x.x.x
+	 *
+	 * @param LegacyProxy $proxy
+	 *
+	 * @return void
+	 */
+	final public function init( LegacyProxy $proxy ) {
+		$this->proxy = $proxy;
+	}
+
+	/**
+	 * Check if the current WordPress version is at least the given version.
+	 *
+	 * @since x.x.x
+	 *
+	 * @param string $version                The version to check against.
+	 * @param bool   $use_unmodified_version Whether to use the unmodified WordPress version from
+	 *                                       the wp-includes/version.php file.
+	 *
+	 * @return bool
+	 */
+	public function wp_version_at_least( string $version, bool $use_unmodified_version = false ): bool {
+		if ( $use_unmodified_version ) {
+			$wp_version = $this->get_unmodified_wp_version();
+		} else {
+			$wp_version = $this->proxy->get_global( 'wp_version' );
+		}
+
+		return version_compare( $wp_version, $version, '>=' );
+	}
+
+	/**
+	 * Get the unmodified WordPress version from the wp-includes/version.php file.
+	 *
+	 * @since x.x.x
+	 * @return string
+	 */
+	private function get_unmodified_wp_version() {
+		$abspath = Constants::get_constant( 'ABSPATH' );
+		$wpinc   = Constants::get_constant( 'WPINC' );
+
+		include "{$abspath}{$wpinc}/version.php";
+
+		// Possibly strip the hyphen and any text after it from the version.
+		$hyphen_position = strpos( $wp_version, '-' );
+		if ( false !== $hyphen_position ) {
+			$wp_version = substr( $wp_version, 0, $hyphen_position );
+		}
+
+		return $wp_version;
+	}
+}

plugins/woocommerce/tests/php/src/Utilities/VersionUtiilTest.php

@@ -0,0 +1,49 @@
+<?php
+
+namespace Automattic\WooCommerce\Tests\Utilities;
+
+use Automattic\WooCommerce\Utilities\VersionUtil;
+use WC_Unit_Test_Case;
+
+/**
+ * Class VersionUtiilTest
+ *
+ * @since x.x.x
+ */
+class VersionUtiilTest extends WC_Unit_Test_Case {
+
+	/**
+	 * The system under test.
+	 *
+	 * @var VersionUtil
+	 */
+	private $sut;
+
+	/**
+	 * Runs before each test.
+	 */
+	public function setUp(): void {
+		parent::setUp();
+
+		$this->reset_container_resolutions();
+		$this->reset_legacy_proxy_mocks();
+
+		$this->sut = $this->get_instance_of( VersionUtil::class );
+	}
+
+	public function test_wp_version_at_least() {
+		// Store the current wp_version
+		$original_wp_version = $GLOBALS['wp_version'];
+
+		// Set a fake wp_version to test.
+		$GLOBALS['wp_version'] = '5.6.0';
+
+		$this->assertFalse( $this->sut->wp_version_at_least( '5.6.1' ) );
+		$this->assertFalse( $this->sut->wp_version_at_least( '6.3' ) );
+		$this->assertTrue( $this->sut->wp_version_at_least( '5.6' ) );
+		$this->assertTrue( $this->sut->wp_version_at_least( '5.5' ) );
+
+		// Restore the original wp_version
+		$GLOBALS['wp_version'] = $original_wp_version;
+	}
+}