Fix misleading "Success: WordPress is up to date" message when downgrade blocked

features/core-update.feature

@@ -167,7 +167,7 @@ Feature: Update WordPress core
  When I run `wp core update`
  Then STDOUT should contain:
  """
- WordPress is up to date
+ WordPress is up to date at version
  """
  And STDOUT should not contain:
  """
@@ -419,3 +419,39 @@ Feature: Update WordPress core
  """
  </div>
  """
+
+ @require-php-7.0 @require-wp-6.1
+ Scenario: Attempting to downgrade without --force shows helpful message
+ Given a WP install
+
+ When I run `wp core version`
+ Then save STDOUT as {WP_CURRENT_VERSION}
+
+ When I try `wp core update --version=6.0`
+ Then STDOUT should contain:
+ """
+ WordPress is up to date at version
+ """
+ And STDOUT should contain:
+ """
+ is older than the current version
+ """
+ And STDOUT should contain:
+ """
+ Use --force to update anyway
+ """
+ And STDOUT should not contain:
+ """
+ Success:
+ """
+ And the return code should be 0
+
+ When I run `wp core update --version=6.0 --force`
+ Then STDOUT should contain:
+ """
+ Updating to version 6.0
+ """
+ And STDOUT should contain:
+ """
+ Success: WordPress updated successfully.
+ """

src/Core_Command.php

@@ -1278,8 +1278,14 @@ static function () {
 
 WP_CLI::success( 'WordPress updated successfully.' );
 }
+// Check if user attempted to downgrade without --force
+} elseif ( ! empty( Utils\get_flag_value( $assoc_args, 'version' ) ) && version_compare( Utils\get_flag_value( $assoc_args, 'version' ), $wp_version, '<' ) ) {
+// Requested version is older than current (downgrade attempt)
+WP_CLI::log( "WordPress is up to date at version {$wp_version}." );
+WP_CLI::log( 'The version you requested (' . Utils\get_flag_value( $assoc_args, 'version' ) . ") is older than the current version ({$wp_version})." );
+WP_CLI::log( 'Use --force to update anyway (e.g., to downgrade to version ' . Utils\get_flag_value( $assoc_args, 'version' ) . ').' );
 } else {
-WP_CLI::success( 'WordPress is up to date.' );
+WP_CLI::success( "WordPress is up to date at version {$wp_version}." );
 }
 }