Add set_attribute method to Block class

plugins/woocommerce/changelog/update-set_attr_block

@@ -0,0 +1,4 @@
+Significance: minor
+Type: update
+
+Add set_attribute method to Block class

plugins/woocommerce/src/Admin/BlockTemplates/BlockInterface.php

@@ -70,6 +70,14 @@ public function get_attributes(): array;
 	 */
 	public function set_attributes( array $attributes );
 
+	/**
+	 * Set a block attribute value without replacing the entire attributes object.
+	 *
+	 * @param string $key The attribute key.
+	 * @param mixed  $value The attribute value.
+	 */
+	public function set_attribute( string $key, $value );
+
 	/**
 	 * Get the parent container that the block belongs to.
 	 */

plugins/woocommerce/src/Internal/Admin/BlockTemplates/AbstractBlock.php

@@ -201,6 +201,16 @@ public function set_attributes( array $attributes ) {
 		$this->attributes = $attributes;
 	}
 
+	/**
+	 * Set a block attribute value without replacing the entire attributes object.
+	 *
+	 * @param string $key The attribute key.
+	 * @param mixed  $value The attribute value.
+	 */
+	public function set_attribute( string $key, $value ) {
+		$this->attributes[ $key ] = $value;
+	}
+
 	/**
 	 * Get the template that this block belongs to.
 	 */

plugins/woocommerce/tests/php/src/Internal/Admin/BlockTemplates/BlockTest.php

@@ -657,4 +657,21 @@ public function test_get_formatted_template_with_sorting() {
 			'Failed asserting that the inner blocks are sorted by order.'
 		);
 	}
+	/**
+	 * Test for set_attribute method.
+	 */
+	public function test_set_attribute() {
+		$template = new BlockTemplate();
+
+		$block = new Block(
+			array(
+				'blockName' => 'test-block-name',
+			),
+			$template
+		);
+
+		$block->set_attribute( 'test-attr', 'test-value' );
+
+		$this->assertSame( 'test-value', $block->get_attributes()['test-attr'] );
+	}
 }