Add test coverage for Button block's text attribute

WordPress · ockham · Aug 13, 2025 · Aug 13, 2025 · Aug 13, 2025 · Aug 18, 2025
commit 054756df5d5b1028a81ab7aa31499e59935ef13c
diff --git a/src/wp-includes/class-wp-block.php b/src/wp-includes/class-wp-block.php
@@ -429,7 +429,7 @@ private function replace_html( string $block_content, string $attribute_name, $s
 				// Store the parent tag and its attributes to be able to restore them later in the button.
 				// The button block has a wrapper while the paragraph and heading blocks don't.
 				if ( 'core/button' === $this->name ) {
-					$button_wrapper                 = $block_reader->get_tag();
+					$button_wrapper                 = strtolower( $block_reader->get_tag() );
 					$button_wrapper_attribute_names = $block_reader->get_attribute_names_with_prefix( '' );
 					$button_wrapper_attrs           = array();
 					foreach ( $button_wrapper_attribute_names as $name ) {

diff --git a/tests/phpunit/tests/block-bindings/render.php b/tests/phpunit/tests/block-bindings/render.php
@@ -71,7 +71,16 @@ public function data_update_block_with_value_from_source() {
 <!-- /wp:paragraph -->
 HTML,
 				'<p>test source value</p>'
-			)
+			),
+			'button block' => array(
+				'text',
+				<<<HTML
+<!-- wp:button -->
+<div class="wp-block-button"><a class="wp-block-button__link wp-element-button">This should not appear</a></div>
+<!-- /wp:button -->
+HTML,
+				'<div class="wp-block-button"><a class="wp-block-button__link wp-element-button">test source value</a></div>'
+			),
 		);
 	}