How to call an api from another api in expressjs?

I have an api like this:

app.get('/test', (req, res) => {
   console.log("this is test");
});

and another api:

app.get('/check', (req, res) => {
   //I want to call "test" api without redirect to it. 
});

I want to call "test" api in "check" api without redirect to "test" api, just do the function in the "test" api. Above is the example code. 'Cause I dont' want to rewrite function from "test" api to "check"