Revert "Revert test data for WithSlug variation (#62579)"

This reverts commit 2917269.

phpunit/block-supports/block-style-variations-test.php

@@ -94,6 +94,22 @@ public function test_add_registered_block_styles_to_theme_data() {
 			),
 		);
 
+		/*
+		 * This style is to be deliberately overwritten by the theme.json partial
+		 * See `phpunit/data/themedir1/block-theme/styles/block-style-variation-with-slug.json`.
+		 */
+		register_block_style(
+			'core/group',
+			array(
+				'name'       => 'WithSlug',
+				'style_data' => array(
+					'color' => array(
+						'background' => 'whitesmoke',
+						'text'       => 'black',
+					),
+				),
+			)
+		);
 		register_block_style(
 			'core/group',
 			array(
@@ -106,6 +122,12 @@ public function test_add_registered_block_styles_to_theme_data() {
 		$group_styles = $theme_json['styles']['blocks']['core/group'] ?? array();
 		$expected     = array(
 			'variations' => array(
+				'WithSlug'                => array(
+					'color' => array(
+						'background' => 'aliceblue',
+						'text'       => 'midnightblue',
+					),
+				),
 				'my-variation'            => $variation_styles_data,
 
 				/*
@@ -129,6 +151,7 @@ public function test_add_registered_block_styles_to_theme_data() {
 		);
 
 		unregister_block_style( 'core/group', 'my-variation' );
+		unregister_block_style( 'core/group', 'WithSlug' );
 
 		$this->assertSameSetsWithIndex( $group_styles, $expected );
 	}

phpunit/class-wp-theme-json-resolver-test.php

@@ -1118,6 +1118,18 @@ public function data_get_style_variations() {
 							),
 						),
 					),
+					array(
+						'blockTypes' => array( 'core/group', 'core/columns' ),
+						'version'    => 3,
+						'slug'       => 'WithSlug',
+						'title'      => 'With Slug',
+						'styles'     => array(
+							'color' => array(
+								'background' => 'aliceblue',
+								'text'       => 'midnightblue',
+							),
+						),
+					),
 				),
 			),
 		);

phpunit/data/themedir1/block-theme/styles/block-style-variation-with-slug.json

@@ -0,0 +1,12 @@
+{
+	"version": 3,
+	"blockTypes": [ "core/group", "core/columns" ],
+	"slug": "WithSlug",
+	"title": "With Slug",
+	"styles": {
+		"color": {
+			"background": "aliceblue",
+			"text": "midnightblue"
+		}
+	}
+}