A package I often use and find extremely useful for intergation testing is dockertest
Use Case
You want to setup and tear down a real database for each integration test run.
Example
An example from the dockertest repository
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var db *redis.Client
var err error
pool, err = dockertest.NewPool("")
if err != nil {
log.Fatalf("Could not connect to docker: %s", err)
}
resource, err := pool.Run("redis", "3.2", nil)
if err != nil {
log.Fatalf("Could not start resource: %s", err)
}
if err = pool.Retry(func() error {
db = redis.NewClient(&redis.Options{
Addr: fmt.Sprintf("localhost:%s", resource.GetPort("6379/tcp")),
})
return db.Ping().Err()
}); err != nil {
log.Fatalf("Could not connect to docker: %s", err)
}
// When you're done, kill and remove the container
err = pool.Purge(resource)
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