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MongoDB

Since v0.23.0

Introduction

The Testcontainers module for MongoDB.

Adding this module to your project dependencies

Please run the following command to add the MongoDB module to your Go dependencies:

go get github.com/testcontainers/testcontainers-go/modules/mongodb

Usage example

ctx := context.Background()

mongodbContainer, err := mongodb.Run(ctx, "mongo:6")
defer func() {
    if err := testcontainers.TerminateContainer(mongodbContainer); err != nil {
        log.Printf("failed to terminate container: %s", err)
    }
}()
if err != nil {
    log.Printf("failed to start container: %s", err)
    return
}

Module Reference

Run function

Info

The RunContainer(ctx, opts...) function is deprecated and will be removed in the next major release of Testcontainers for Go.

The MongoDB module exposes one entrypoint function to create the MongoDB container, and this function receives three parameters:

func Run(ctx context.Context, img string, opts ...testcontainers.ContainerCustomizer) (*MongoDBContainer, error)
  • context.Context, the Go context.
  • string, the Docker image to use.
  • testcontainers.ContainerCustomizer, a variadic argument for passing options.

Image

Use the second argument in the Run function to set a valid Docker image. In example: Run(context.Background(), "mongo:6").

Container Options

When starting the MongoDB container, you can pass options in a variadic way to configure it.

WithUsername

This functional option sets the initial username to be created when the container starts. It is used in conjunction with WithPassword to set a username and its password, creating the specified user with superuser power.

E.g. testcontainers.WithUsername("mymongouser").

WithPassword

This functional option sets the initial password to be created when the container starts. It is used in conjunction with WithUsername to set a username and its password, setting the password for the superuser power.

E.g. testcontainers.WithPassword("mymongopwd").

WithReplicaSet

The WithReplicaSet functional option configures the container to run a single-node MongoDB replica set named rs. The MongoDB container will wait until the replica set is ready.

The following options are exposed by the testcontainers package.

Basic Options

Lifecycle Options

Files & Mounts Options

Build Options

Logging Options

Image Options

Networking Options

Advanced Options

Experimental Options

Container Methods

The MongoDB container exposes the following methods:

ConnectionString

The ConnectionString method returns the connection string to connect to the MongoDB container. It returns a string with the format mongodb://<host>:<port>.

It can be used to configure a MongoDB client (go.mongodb.org/mongo-driver/mongo), e.g.:

ctx := context.Background()

mongodbContainer, err := mongodb.Run(ctx, "mongo:6")
defer func() {
    if err := testcontainers.TerminateContainer(mongodbContainer); err != nil {
        log.Printf("failed to terminate container: %s", err)
    }
}()
if err != nil {
    log.Printf("failed to start container: %s", err)
    return
}

endpoint, err := mongodbContainer.ConnectionString(ctx)
if err != nil {
    log.Printf("failed to get connection string: %s", err)
    return
}

mongoClient, err := mongo.Connect(ctx, options.Client().ApplyURI(endpoint))
if err != nil {
    log.Printf("failed to connect to MongoDB: %s", err)
    return
}