Handle incomplete route

Author: andyw8

lib/ruby_lsp/ruby_lsp_rails/server.rb

@@ -90,14 +90,14 @@ def route_location(name)
           return { result: nil }
         end
 
-        key = T.must(name.match(/(^.+)(_path|_url)$/))[1]
+        match_data = name.match(/(^.+)(_path|_url)$/)
+        return { result: nil } unless match_data
+
+        key = match_data[1]
 
         # A token could match the _path or _url pattern, but not be an actual route.
         route = ::Rails.application.routes.named_routes.get(key)
-
-        unless route&.source_location
-          return { result: nil }
-        end
+        return { result: nil } unless route&.source_location
 
         {
           result: {

test/ruby_lsp_rails/definition_test.rb

@@ -92,6 +92,14 @@ def baz; end
         assert_equal(3, response[0].range.end.line)
       end
 
+      test "handles incomplete routes" do
+        response = generate_definitions_for_source(<<~RUBY, { line: 0, character: 0 })
+          _path
+        RUBY
+
+        assert_empty(response)
+      end
+
       test "provides the definition of a custom route" do
         response = generate_definitions_for_source(<<~RUBY, { line: 0, character: 0 })
           archive_users_path