fix: behat tests. Add checks for multiple success lines

Author: shawnhooper

features/comment.feature

@@ -555,6 +555,33 @@ Feature: Manage WordPress comments
       Success: No comments deleted.
       """
 
+  Scenario: Delete multiple comments shows summary message
+    Given a WP install
+    And I run `wp comment create --comment_post_ID=1 --comment_content='Comment 1' --porcelain`
+    And save STDOUT as {COMMENT_ID_1}
+    And I run `wp comment create --comment_post_ID=1 --comment_content='Comment 2' --porcelain`
+    And save STDOUT as {COMMENT_ID_2}
+    And I run `wp comment create --comment_post_ID=1 --comment_content='Comment 3' --porcelain`
+    And save STDOUT as {COMMENT_ID_3}
+
+    When I run `wp comment delete {COMMENT_ID_1} {COMMENT_ID_2} {COMMENT_ID_3}`
+    Then STDOUT should contain:
+      """
+      Success: Trashed comment {COMMENT_ID_1}.
+      """
+    And STDOUT should contain:
+      """
+      Success: Trashed comment {COMMENT_ID_2}.
+      """
+    And STDOUT should contain:
+      """
+      Success: Trashed comment {COMMENT_ID_3}.
+      """
+    And STDOUT should contain:
+      """
+      Success: Deleted 3 comments.
+      """
+
   Scenario: Error when no comment IDs and no --all flag provided
     Given a WP install
 

src/Comment_Command.php

@@ -490,7 +490,9 @@ public function delete( $args, $assoc_args ) {
 		}
 
 		if ( 0 === $status ) {
-			WP_CLI::success( "Deleted {$successfully_deleted} comments." );
+			if ( $total > 1 ) {
+				WP_CLI::success( "Deleted {$successfully_deleted} comments." );
+			}
 		} else {
 			$error_count = $total - $successfully_deleted;
 			WP_CLI::error( "Failed deleting {$error_count} comments." );