Navigation Block: Fix erroneous escaping of ampersands (etc)

phpunit/blocks/block-navigation-block-hooks-test.php

@@ -0,0 +1,76 @@
+<?php
+/**
+ * Navigation block block hooks tests.
+ *
+ * @package WordPress
+ * @subpackage Blocks
+ */
+
+/**
+ * Tests for the Navigation block.
+ *
+ * @group blocks
+ */
+class Block_Navigation_Block_Hooks_Test extends WP_UnitTestCase {
+	/**
+	 * Original markup.
+	 *
+	 * @var string
+	 */
+	protected static $original_markup;
+
+	/**
+	 * Post object.
+	 *
+	 * @var object
+	 */
+	protected static $navigation_post;
+
+	/**
+	 * Setup method.
+	 */
+	public static function wpSetUpBeforeClass() {
+		self::$original_markup = '<!-- wp:navigation-link {"label":"News & About","type":"page","id":2,"url":"http://localhost:8888/?page_id=2","kind":"post-type"} /-->';
+
+		self::$navigation_post = self::factory()->post->create_and_get(
+			array(
+				'post_type'    => 'wp_navigation',
+				'post_title'   => 'Navigation Menu',
+				'post_content' => self::$original_markup,
+			)
+		);
+	}
+
+	/**
+	 * Tear down each test method.
+	 */
+	public function tear_down() {
+		$registry = WP_Block_Type_Registry::get_instance();
+
+		if ( $registry->is_registered( 'tests/my-block' ) ) {
+			$registry->unregister( 'tests/my-block' );
+		}
+
+		parent::tear_down();
+	}
+
+	/**
+	 * @covers ::gutenberg_block_core_navigation_update_ignore_hooked_blocks_meta
+	 */
+	public function test_block_core_navigation_update_ignore_hooked_blocks_meta() {
+		register_block_type(
+			'tests/my-block',
+			array(
+				'block_hooks' => array(
+					'core/navigation' => 'last_child',
+				),
+			)
+		);
+
+		$post = get_post( self::$navigation_post );
+
+		gutenberg_block_core_navigation_update_ignore_hooked_blocks_meta( $post );
+		$this->assertSame( self::$original_markup . '<!-- wp:tests/my-block /-->', $post->post_content );
+		$this->assertSame( array( 'tests/my-block' ), get_post_meta( $post, '_wp_ignored_hooked_blocks' ) );
+	}
+}