test: `v4.1.x` test token factory

Description and Motivation

Add integration test for token factory module, including:

[x] I have read Migaloo's contribution guidelines.
[x] My pull request has a sound title and description (not something vague like Update index.md)
[ ] All existing and new tests are passing.
[ ] I updated/added relevant documentation.
[ ] The code is formatted properly golangci-lint run ./... --fix.