Golang MongoDb GridFs Testing

I have a rest API implemented using Gorilla Mux in Golang. This API uploads/downloads files from MongoDb GridFs. I want to write integration tests for my API. <br>Is there a embedded MongoDb package with GridFs support in Go? How do we test APIs using GridFs? Do we need to test against a real MongoDB?
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Java seems to have such a <a href="https://github.com/flapdoodle-oss/de.flapdoodle.embed.mongo">library</a>

As part of the test, I would like to start embedded MongoDB and stop it at the end of the test.

There is no embedded MongoDB for Go as far as I am aware of.

What I do is to use mgo's own gopkg.in/mgo.v2/dbtest which you can install as usual with

go get -u "gopkg.in/mgo.v2/dbtest"

Although it requires a mongod inside your $PATH, the dbtest takes care of all the rest.

You get a server with

package StackOverflowTests
import (
  "io/ioutil"
  "os"
  "testing"
  "gopkg.in/mgo.v2/dbtest"
)
func TestFoo(t *testing.T) {
	d, _ := ioutil.TempDir(os.TempDir(), "mongotools-test")
	server := dbtest.DBServer{}
	server.SetPath(d)
	// Note that the server will be started automagically
	session := server.Session()
	// Insert data programmatically as needed
	setupDatabaseAndCollections(session)
	// Do your testing stuff
	foo.Bar(session)
	// Whatever tests you do
    // We can not use "defer session.Close()" because...
    session.Close()
	// ... "server.Wipe()" will panic if there are still connections open
	// for example because you did a .Copy() on the
    // original session in your code. VERY useful!
	server.Wipe()
	// Tear down the server
	server.Stop()
}

Note that you neither have to define an IP or port, which are provided automagically (a free open port in the non-reserved range of localhost is used).