Add separator block styles

class-block-unit-test.php

@@ -287,6 +287,26 @@ public function content() {
 			<pre class="wp-block-verse">A block for haiku? <br/>Why not? <br/>Blocks for all the things!</pre>
 			<!-- /wp:verse -->
 
+			<!-- wp:heading {"level":2} -->
+			<h2>' . esc_html__( 'Separator', '@@textdomain' ) . '</h2>
+			<!-- /wp:heading -->
+
+			<!-- wp:paragraph -->
+			<p>' . esc_html__( 'Here are examples of the three separator styles of the core Gutenberg separator block.', '@@textdomain' ) . '</p>
+			<!-- /wp:paragraph -->
+
+			<!-- wp:separator {"className":""} -->
+			<hr class="wp-block-separator"/>
+			<!-- /wp:separator -->
+
+			<!-- wp:separator {"className":" is-style-wide"} -->
+			<hr class="wp-block-separator  is-style-wide"/>
+			<!-- /wp:separator -->
+
+			<!-- wp:separator {"className":"is-style-dots"} -->
+			<hr class="wp-block-separator is-style-dots"/>
+			<!-- /wp:separator -->
+
 			<!-- wp:heading {"level":2} -->
 			<h2>' . esc_html__( 'Table', '@@textdomain' ) . '</h2>
 			<!-- /wp:heading -->
@@ -483,7 +503,6 @@ public function content() {
 			<!-- /wp:column --></div>
 			<!-- /wp:columns -->
 
-				<p class="layout-column-2">Cras justo odio, dapibus ac facilisis in, egestas eget quam. Sed posuere consectetur est at lobortis. Nullam id dolor id nibh ultricies vehicula ut id elit. Donec sed odio dui. Nulla vitae elit libero, a pharetra augue.</p>
 			<!-- wp:separator -->
 			<hr class="wp-block-separator"/>
 			<!-- /wp:separator -->