diff --git a/tests/phpunit/tests/block-templates/base.php b/tests/phpunit/tests/block-templates/base.php
index f6a5a9f4dfcec..c3fabee272849 100644
--- a/tests/phpunit/tests/block-templates/base.php
+++ b/tests/phpunit/tests/block-templates/base.php
@@ -39,7 +39,7 @@ public static function wpSetUpBeforeClass( WP_UnitTest_Factory $factory ) {
 				'post_type'    => 'wp_template',
 				'post_name'    => 'my_template',
 				'post_title'   => 'My Template',
-				'post_content' => 'Content',
+				'post_content' => '<!-- wp:heading {"level":1} --><h1>Template</h1><!-- /wp:heading -->' ,
 				'post_excerpt' => 'Description of my template',
 				'tax_input'    => array(
 					'wp_theme' => array(
@@ -57,7 +57,7 @@ public static function wpSetUpBeforeClass( WP_UnitTest_Factory $factory ) {
 				'post_type'    => 'wp_template_part',
 				'post_name'    => 'my_template_part',
 				'post_title'   => 'My Template Part',
-				'post_content' => 'Content',
+				'post_content' => '<!-- wp:heading {"level":2} --><h2>Template Part</h2><!-- /wp:heading -->' ,
 				'post_excerpt' => 'Description of my template part',
 				'tax_input'    => array(
 					'wp_theme'              => array(
diff --git a/tests/phpunit/tests/block-templates/buildBlockTemplateResultFromPost.php b/tests/phpunit/tests/block-templates/buildBlockTemplateResultFromPost.php
index 371c50a183533..0d469abe88106 100644
--- a/tests/phpunit/tests/block-templates/buildBlockTemplateResultFromPost.php
+++ b/tests/phpunit/tests/block-templates/buildBlockTemplateResultFromPost.php
@@ -8,6 +8,21 @@
  */
 class Tests_Block_Templates_BuildBlockTemplateResultFromPost extends WP_Block_Templates_UnitTestCase {
 
+	/**
+	 * Tear down each test method.
+	 *
+	 * @since 6.5.0
+	 */
+	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();
+	}
+
 	/**
 	 * @ticket 54335
 	 */
@@ -49,4 +64,46 @@ public function test_should_build_template_part() {
 		$this->assertSame( WP_TEMPLATE_PART_AREA_HEADER, $template_part->area );
 		$this->assertSame( self::$template_part_post->post_modified, $template_part->modified, 'Template part result properties match' );
 	}
+
+	/**
+	 * @ticket 59646
+	 */
+	public function test_should_inject_hooked_block_into_template() {
+		register_block_type(
+			'tests/my-block',
+			array(
+				'block_hooks' => array(
+					'core/heading' => 'before',
+				),
+			)
+		);
+
+		$template = _build_block_template_result_from_post(
+			self::$template_post,
+			'wp_template'
+		);
+		$this->assertStringStartsWith( '<!-- wp:tests/my-block /-->', $template->content );
+		$this->assertStringContainsString( '"metadata":{"ignoredHookedBlocks":["tests/my-block"]}', $template->content );
+	}
+
+	/**
+	 * @ticket 59646
+	 */
+	public function test_should_inject_hooked_block_into_template_part() {
+		register_block_type(
+			'tests/my-block',
+			array(
+				'block_hooks' => array(
+					'core/heading' => 'after',
+				),
+			)
+		);
+
+		$template_part = _build_block_template_result_from_post(
+			self::$template_part_post,
+			'wp_template_part'
+		);
+		$this->assertStringEndsWith( '<!-- wp:tests/my-block /-->', $template_part->content );
+		$this->assertStringContainsString( '"metadata":{"ignoredHookedBlocks":["tests/my-block"]}', $template_part->content );
+	}
 }