diff --git a/tests/phpunit/tests/interactivity-api/wpInteractivityAPI.php b/tests/phpunit/tests/interactivity-api/wpInteractivityAPI.php
index e9349190ebdb2..8d190a93aafc1 100644
--- a/tests/phpunit/tests/interactivity-api/wpInteractivityAPI.php
+++ b/tests/phpunit/tests/interactivity-api/wpInteractivityAPI.php
@@ -211,6 +211,17 @@ public function test_config_not_printed_when_empty() {
 		$this->expectOutputString( '' );
 	}
 
+	/**
+	 * Test that the deprecated register_script_modules method is deprecated but does not throw.
+	 *
+	 * @ticket 60647
+	 *
+	 * @expectedDeprecated WP_Interactivity_API::register_script_modules
+	 */
+	public function test_register_script_modules_deprecated() {
+		$this->interactivity->register_script_modules();
+	}
+
 	/**
 	 * Sets up an activity, runs an optional callback, and returns a MockAction for inspection.
 	 *
@@ -221,7 +232,6 @@ public function test_config_not_printed_when_empty() {
 	 */
 	private function get_script_data_filter_result( ?Closure $callback = null ): MockAction {
 		$this->interactivity->add_hooks();
-		$this->interactivity->register_script_modules();
 		wp_enqueue_script_module( '@wordpress/interactivity' );
 		$filter = new MockAction();
 		add_filter( 'script_module_data_@wordpress/interactivity', array( $filter, 'filter' ) );