Ah yes a quote about beginners rapidly gaining beginner gains by practicing really does apply to a group of professionals trying to do their job in a business /s

It’s shocking the amount of morons people trying to do their job have to deal with nowadays. I’m sorry you have a colleague with the critical thinking ability of a punch drunk.

I would love to learn to not worry, stress and ruminate about every little thing ever

If it was me personally I would just test the handlers separately rather than scaffolding the router entirely.

Either way, I suggest looking into using the standard lib http/httptest https://pkg.go.dev/net/http/httptest

Here’s an snippet example of testing a handler

req, err := http.NewRequest(http.MethodGet, "/health", bytes.NewBuffer([]byte{}))
if err != nil {
    t.Fatal(err)
}

rr := httptest.NewRecorder()
handler := http.HandlerFunc(srv.HealthCheckHandler)
handler.ServeHTTP(rr, req)

if rr.Code != http.StatusOK {
    t.Fatalf("expect HTTP response code %d, got %d", tt.expectHttpCode, rr.Code)
}