Treat older plugin no-update versions as up to date

features/plugin-update.feature

@@ -240,7 +240,7 @@ Feature: Update WordPress plugins
 
   # Skipped on Windows because of sed usage that would need to be refactored for compatibility.
   @require-wp-5.2 @skip-windows
-  Scenario: Updating all plugins with some of them having an invalid version shouldn't report an error
+  Scenario: Updating all plugins ignores an older no-update version
     Given a WP install
     And I run `wp plugin delete akismet`
 
@@ -254,20 +254,11 @@ Feature: Update WordPress plugins
     Then STDOUT should be empty
     And the return code should be 0
 
-    When I try `wp plugin update --all`
-    Then STDERR should contain:
-      """
-      Warning: health-check: version higher than expected.
-      """
-
-    And STDOUT should not contain:
-      """
-      Error: Only updated 1 of 1 plugins.
-      """
-
+    When I run `wp plugin update --all`
+    Then STDERR should be empty
     And STDOUT should contain:
       """
-      Success: Updated 1 of 1 plugins (1 skipped).
+      Success: Updated 1 of 1 plugins.
       """
 
   # Tests for --auto-update-indicated feature

features/plugin.feature

@@ -731,56 +731,58 @@ Feature: Manage WordPress plugins
       | db-error.php |       | Custom database error message. | db-error.php |
 
   @require-wp-4.0
-  Scenario: Validate installed plugin's version.
-    Given a WP installation
-    And I run `wp plugin uninstall --all`
-    And I run `wp plugin install hello-dolly --force`
-    And a wp-content/mu-plugins/test-plugin-update.php file:
+  Scenario Outline: Treat an older or empty no-update version as up to date
+    Given a WP install
+    And a wp-content/plugins/example/example.php file:
       """
       <?php
       /**
-       * Plugin Name: Test Plugin Update
-       * Description: Fakes installed plugin's data to verify plugin version mismatch
-       * Author: WP-CLI tests
+       * Plugin Name: Example Plugin
+       * Version: 2.0.0
        */
+      """
+    And that HTTP requests to https://api.wordpress.org/plugins/update-check/1.1/ will respond with:
+      """
+      HTTP/1.1 200 OK
 
-      add_filter( 'site_transient_update_plugins', function( $value ) {
-          if ( ! is_object( $value ) ) {
-              return $value;
+      {
+        "plugins": [],
+        "translations": [],
+        "no_update": {
+          "example/example.php": {
+            "id": "vendor.example/plugins/example",
+            "slug": "example",
+            "plugin": "example/example.php",
+            "new_version": "<upstream_version>",
+            "package": ""
           }
-
-          unset( $value->response['hello-dolly/hello.php'] );
-          $value->no_update['hello-dolly/hello.php']->new_version = '1.5';
-
-          return $value;
-      } );
-      ?>
+        }
+      }
       """
 
-    When I run `wp plugin list --name=hello-dolly  --field=version`
-    Then save STDOUT as {PLUGIN_VERSION}
-
-    When I run `wp plugin list --name=hello-dolly  --field=update_version`
-    Then save STDOUT as {UPDATE_VERSION}
-
     When I run `wp plugin list`
     Then STDOUT should be a table containing rows:
-      | name               | status   | update                       | version          | update_version   | auto_update |
-      | hello-dolly        | inactive | version higher than expected | {PLUGIN_VERSION} | {UPDATE_VERSION} | off         |
+      | name    | status   | update | version | update_version | auto_update |
+      | example | inactive | none   | 2.0.0   |                | off         |
 
-    When I try `wp plugin update --all`
-    Then STDERR should be:
+    When I run `wp plugin update --all`
+    Then STDOUT should be:
       """
-      Warning: hello-dolly: version higher than expected.
-      Error: No plugins updated.
+      Success: Plugin already updated.
       """
+    And STDERR should be empty
 
-    When I try `wp plugin update hello-dolly`
-    Then STDERR should be:
+    When I run `wp plugin update example`
+    Then STDOUT should be:
       """
-      Warning: hello-dolly: version higher than expected.
-      Error: No plugins updated.
+      Success: Plugin already updated.
       """
+    And STDERR should be empty
+
+    Examples:
+      | upstream_version |
+      | 1.0.0            |
+      |                  |
 
   Scenario: Only valid status filters are accepted when listing plugins
     Given a WP install

src/Plugin_Command.php

@@ -1033,13 +1033,6 @@ protected function get_item_list() {
 				// Get info for all plugins that don't have an update.
 				$plugin_update_info = isset( $all_update_info->no_update[ $file ] ) ? $all_update_info->no_update[ $file ] : null;
 
-				// Check if local version is newer than what is listed upstream.
-				if ( null !== $plugin_update_info && version_compare( $details['Version'], $plugin_update_info->new_version, '>' ) ) {
-					$items[ $file ]['update']       = static::INVALID_VERSION_MESSAGE;
-					$items[ $file ]['requires']     = isset( $plugin_update_info->requires ) ? $plugin_update_info->requires : null;
-					$items[ $file ]['requires_php'] = isset( $plugin_update_info->requires_php ) ? $plugin_update_info->requires_php : null;
-				}
-
 				// If there is a plugin in no_update with a newer version than the local copy, it is either because:
 				// A: the plugins update API has already filtered it because the local WordPress version is too low
 				// B: It is possibly a paid plugin that has an update which the user does not qualify for