bug: allow start container with reuse in different test package

docker.go

@@ -14,6 +14,7 @@ import (
 	"net/url"
 	"os"
 	"path/filepath"
+	"regexp"
 	"strings"
 	"sync"
 	"time"
@@ -49,6 +50,8 @@ const (
 	logStoppedForOutOfSyncMessage = "Stopping log consumer: Headers out of sync"
 )
 
+var createContainerFailDueToNameConflictRegex = regexp.MustCompile("Conflict. The container name .* is already in use by container .*")
+
 // DockerContainer represents a container started using Docker
 type DockerContainer struct {
 	// Container ID from Docker
@@ -1153,13 +1156,40 @@ func (p *DockerProvider) findContainerByName(ctx context.Context, name string) (
 	return nil, nil
 }
 
+func (p *DockerProvider) waitContainerCreation(ctx context.Context, name string) (*types.Container, error) {
+	var container *types.Container
+	return container, backoff.Retry(func() error {
+		c, err := p.findContainerByName(ctx, name)
+		if err != nil {
+			return err
+		}
+
+		if c == nil {
+			return fmt.Errorf("container %s not found", name)
+		}
+
+		container = c
+		return nil
+	}, backoff.WithContext(backoff.NewExponentialBackOff(), ctx))
+}
+
 func (p *DockerProvider) ReuseOrCreateContainer(ctx context.Context, req ContainerRequest) (Container, error) {
 	c, err := p.findContainerByName(ctx, req.Name)
 	if err != nil {
 		return nil, err
 	}
 	if c == nil {
-		return p.CreateContainer(ctx, req)
+		createdContainer, err := p.CreateContainer(ctx, req)
+		if err == nil {
+			return createdContainer, nil
+		}
+		if !createContainerFailDueToNameConflictRegex.MatchString(err.Error()) {
+			return nil, err
+		}
+		c, err = p.waitContainerCreation(ctx, req.Name)
+		if err != nil {
+			return nil, err
+		}
 	}
 
 	sessionID := core.SessionID()
@@ -1178,6 +1208,13 @@ func (p *DockerProvider) ReuseOrCreateContainer(ctx context.Context, req Contain
 		}
 	}
 
+	// default hooks include logger hook and pre-create hook
+	defaultHooks := []ContainerLifecycleHooks{
+		DefaultLoggingHook(p.Logger),
+		defaultReadinessHook(),
+	}
+	allHooks := combineContainerHooks(defaultHooks, req.LifecycleHooks)
+
 	dc := &DockerContainer{
 		ID:                  c.ID,
 		WaitingFor:          req.WaitingFor,
@@ -1187,7 +1224,24 @@ func (p *DockerProvider) ReuseOrCreateContainer(ctx context.Context, req Contain
 		terminationSignal:   termSignal,
 		stopLogProductionCh: nil,
 		logger:              p.Logger,
-		isRunning:           c.State == "running",
+		lifecycleHooks: []ContainerLifecycleHooks{
+			{
+				PostStarts:  allHooks.PostStarts,
+				PostReadies: allHooks.PostReadies,
+			},
+		},
+	}
+
+	err = dc.startedHook(ctx)
+	if err != nil {
+		return nil, err
+	}
+
+	dc.isRunning = true
+
+	err = dc.readiedHook(ctx)
+	if err != nil {
+		return nil, err
 	}
 
 	return dc, nil

generic_test.go

@@ -3,6 +3,11 @@ package testcontainers
 import (
 	"context"
 	"errors"
+	"net/http"
+	"os"
+	"os/exec"
+	"strings"
+	"sync"
 	"testing"
 	"time"
 
@@ -117,3 +122,70 @@ func TestGenericContainerShouldReturnRefOnError(t *testing.T) {
 	require.NotNil(t, c)
 	terminateContainerOnEnd(t, context.Background(), c)
 }
+
+func TestGenericReusableContainerInSubprocess(t *testing.T) {
+	wg := sync.WaitGroup{}
+	wg.Add(10)
+	for i := 0; i < 10; i++ {
+		go func() {
+			defer wg.Done()
+
+			// create containers in subprocesses, as "go test ./..." does.
+			output := createReuseContainerInSubprocess(t)
+
+			// check is reuse container with WaitingFor work correctly.
+			require.True(t, strings.Contains(output, "🚧 Waiting for container id"))
+			require.True(t, strings.Contains(output, "🔔 Container is ready"))
+		}()
+	}
+
+	wg.Wait()
+}
+
+func createReuseContainerInSubprocess(t *testing.T) string {
+	cmd := exec.Command(os.Args[0], "-test.run=TestHelperContainerStarterProcess")
+	cmd.Env = []string{"GO_WANT_HELPER_PROCESS=1"}
+
+	output, err := cmd.CombinedOutput()
+	require.NoError(t, err, string(output))
+
+	return string(output)
+}
+
+// TestHelperContainerStarterProcess is a helper function
+// to start a container in a subprocess. It's not a real test.
+func TestHelperContainerStarterProcess(t *testing.T) {
+	if os.Getenv("GO_WANT_HELPER_PROCESS") != "1" {
+		t.Skip("Skipping helper test function. It's not a real test")
+	}
+
+	ctx := context.Background()
+
+	nginxC, err := GenericContainer(ctx, GenericContainerRequest{
+		ProviderType: providerType,
+		ContainerRequest: ContainerRequest{
+			Image:        nginxDelayedImage,
+			ExposedPorts: []string{nginxDefaultPort},
+			WaitingFor:   wait.ForListeningPort(nginxDefaultPort), // default startupTimeout is 60s
+			Name:         reusableContainerName,
+		},
+		Started: true,
+		Reuse:   true,
+	})
+	require.NoError(t, err)
+	require.True(t, nginxC.IsRunning())
+
+	origin, err := nginxC.PortEndpoint(ctx, nginxDefaultPort, "http")
+	require.NoError(t, err)
+
+	// check is reuse container with WaitingFor work correctly.
+	req, err := http.NewRequestWithContext(ctx, http.MethodGet, origin, nil)
+	require.NoError(t, err)
+	req.Close = true
+
+	resp, err := http.DefaultClient.Do(req)
+	require.NoError(t, err)
+	defer resp.Body.Close()
+
+	require.Equal(t, http.StatusOK, resp.StatusCode)
+}

reaper.go

@@ -6,7 +6,6 @@ import (
 	"fmt"
 	"math/rand"
 	"net"
-	"regexp"
 	"strings"
 	"sync"
 	"time"
@@ -186,8 +185,6 @@ func reuseOrCreateReaper(ctx context.Context, sessionID string, provider ReaperP
 	return reaperInstance, nil
 }
 
-var createContainerFailDueToNameConflictRegex = regexp.MustCompile("Conflict. The container name .* is already in use by container .*")
-
 // reuseReaperContainer constructs a Reaper from an already running reaper
 // DockerContainer.
 func reuseReaperContainer(ctx context.Context, sessionID string, provider ReaperProvider, reaperContainer *DockerContainer) (*Reaper, error) {