Merge pull request #131 from rieske/tmpfs

Add ability to configure tmpfs for a container

container.go

@@ -69,6 +69,7 @@ type ContainerRequest struct {
 	Labels         map[string]string
 	BindMounts     map[string]string
 	VolumeMounts   map[string]string
+	Tmpfs          map[string]string
 	RegistryCred   string
 	WaitingFor     wait.Strategy
 	Name           string              // for specifying container name

docker.go

@@ -443,6 +443,7 @@ func (p *DockerProvider) CreateContainer(ctx context.Context, req ContainerReque
 	hostConfig := &container.HostConfig{
 		PortBindings: exposedPortMap,
 		Mounts:       mounts,
+		Tmpfs:        req.Tmpfs,
 		AutoRemove:   req.AutoRemove,
 		Privileged:   req.Privileged,
 		NetworkMode:  req.NetworkMode,

docker_test.go

@@ -3,12 +3,13 @@ package testcontainers
 import (
 	"context"
 	"fmt"
-	"github.com/docker/docker/api/types/volume"
 	"net/http"
 	"path/filepath"
 	"testing"
 	"time"
 
+	"github.com/docker/docker/api/types/volume"
+
 	"database/sql"
 	// Import mysql into the scope of this package (required)
 	_ "github.com/go-sql-driver/mysql"
@@ -987,3 +988,53 @@ func TestContainerCreationWithBindAndVolume(t *testing.T) {
 		}
 	}()
 }
+
+func TestContainerWithTmpFs(t *testing.T) {
+	ctx := context.Background()
+	req := ContainerRequest{
+		Image: "busybox",
+		Cmd:   []string{"sleep", "10"},
+		Tmpfs: map[string]string{"/testtmpfs": "rw"},
+	}
+
+	container, err := GenericContainer(ctx, GenericContainerRequest{
+		ContainerRequest: req,
+		Started:          true,
+	})
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer func() {
+		t.Log("terminating container")
+		err := container.Terminate(ctx)
+		if err != nil {
+			t.Fatal(err)
+		}
+	}()
+
+	var path = "/testtmpfs/test.file"
+
+	c, err := container.Exec(ctx, []string{"ls", path})
+	if err != nil {
+		t.Fatal(err)
+	}
+	if c != 1 {
+		t.Fatalf("File %s should not have existed, expected return code 1, got %v", path, c)
+	}
+
+	c, err = container.Exec(ctx, []string{"touch", path})
+	if err != nil {
+		t.Fatal(err)
+	}
+	if c != 0 {
+		t.Fatalf("File %s should have been created successfully, expected return code 0, got %v", path, c)
+	}
+
+	c, err = container.Exec(ctx, []string{"ls", path})
+	if err != nil {
+		t.Fatal(err)
+	}
+	if c != 0 {
+		t.Fatalf("File %s should exist, expected return code 0, got %v", path, c)
+	}
+}