Refresh diagnostics on .rubocop_todo.yml change (#3800)

Author: vinistock

lib/ruby_lsp/server.rb

@@ -303,7 +303,7 @@ def run_initialize(message)
           @current_request_id,
           Interface::RelativePattern.new(
             base_uri: @global_state.workspace_uri.to_s,
-            pattern: "{.rubocop.yml,.rubocop}",
+            pattern: "{.rubocop.yml,.rubocop,.rubocop_todo.yml}",
           ),
           registration_id: "rubocop-watcher",
         ))
@@ -1045,7 +1045,7 @@ def workspace_did_change_watched_files(message)
 
         file_name = File.basename(file_path)
 
-        if file_name == ".rubocop.yml" || file_name == ".rubocop"
+        if file_name == ".rubocop.yml" || file_name == ".rubocop" || file_name == ".rubocop_todo.yml"
           handle_rubocop_config_change(uri)
         end
       end

test/server_test.rb

@@ -1058,8 +1058,6 @@ def test_edits_outside_of_declarations_do_not_trigger_indexing
   end
 
   def test_rubocop_config_changes_trigger_workspace_diagnostic_refresh
-    uri = URI::Generic.from_path(path: File.join(Dir.pwd, ".rubocop.yml"))
-
     @server.process_message({
       id: 1,
       method: "initialize",
@@ -1073,22 +1071,26 @@ def test_rubocop_config_changes_trigger_workspace_diagnostic_refresh
         },
       },
     })
-
     @server.global_state.index.index_all(uris: [])
-    @server.process_message({
-      method: "workspace/didChangeWatchedFiles",
-      params: {
-        changes: [
-          {
-            uri: uri,
-            type: RubyLsp::Constant::FileChangeType::CHANGED,
-          },
-        ],
-      },
-    })
 
-    request = find_message(RubyLsp::Request)
-    assert_equal("workspace/diagnostic/refresh", request.method)
+    [".rubocop.yml", ".rubocop", ".rubocop_todo.yml"].each do |config_file|
+      uri = URI::Generic.from_path(path: File.join(Dir.pwd, config_file))
+
+      @server.process_message({
+        method: "workspace/didChangeWatchedFiles",
+        params: {
+          changes: [
+            {
+              uri: uri,
+              type: RubyLsp::Constant::FileChangeType::CHANGED,
+            },
+          ],
+        },
+      })
+
+      request = find_message(RubyLsp::Request)
+      assert_equal("workspace/diagnostic/refresh", request.method)
+    end
   end
 
   def test_compose_bundle_creates_file_to_skip_next_compose