package docker import ( "context" "fmt" "github.com/testcontainers/testcontainers-go" "github.com/testcontainers/testcontainers-go/wait" "testing" ) func MqttContainer(t *testing.T) (context.Context, testcontainers.Container, string) { ctx := context.Background() req := testcontainers.ContainerRequest{ Image: "eclipse-mosquitto", ExposedPorts: []string{"1883/tcp"}, WaitingFor: wait.ForLog("listen socket on port 1883."), } mqttC, err := testcontainers.GenericContainer(ctx, testcontainers.GenericContainerRequest{ ContainerRequest: req, Started: true, }) if err != nil { t.Error(err) } ip, err := mqttC.Host(ctx) if err != nil { t.Error(err) } port, err := mqttC.MappedPort(ctx, "1883/tcp") if err != nil { t.Error(err) } mqttUri := fmt.Sprintf("tcp://%s:%d", ip, port.Int()) return ctx, mqttC, mqttUri }