feat: optional S3-compatible storage for uploaded images, instead of the local upload directory

test/s3_image_storage_integration_test.go

@@ -0,0 +1,71 @@
+package test
+
+import (
+	domainImage "RenewCMS/internal/domain/image"
+	"RenewCMS/internal/infrastructure/storage"
+	"bytes"
+	"errors"
+	"io"
+	"os"
+	"testing"
+)
+
+const (
+	envTestS3Endpoint  = "RENEWCMS_TEST_S3_ENDPOINT"
+	envTestS3Bucket    = "RENEWCMS_TEST_S3_BUCKET"
+	envTestS3AccessKey = "RENEWCMS_TEST_S3_ACCESS_KEY"
+	envTestS3SecretKey = "RENEWCMS_TEST_S3_SECRET_KEY"
+)
+
+func TestS3StorageIntegration(t *testing.T) {
+	endpoint := os.Getenv(envTestS3Endpoint)
+	if endpoint == "" {
+		t.Skipf("%s is not set, run task test:s3 to start a throwaway S3 server", envTestS3Endpoint)
+	}
+	store, err := storage.Open(storage.Config{Driver: storage.DriverS3, S3: storage.S3Config{
+		Bucket:          os.Getenv(envTestS3Bucket),
+		Region:          "us-east-1",
+		Endpoint:        endpoint,
+		AccessKeyID:     os.Getenv(envTestS3AccessKey),
+		SecretAccessKey: os.Getenv(envTestS3SecretKey),
+		KeyPrefix:       "integration/",
+		PathStyle:       true,
+	}})
+	if err != nil {
+		t.Fatalf("storage.Open failed: %v", err)
+	}
+
+	name, err := store.Put("image/png", bytes.NewReader([]byte("0123456789")))
+	if err != nil {
+		t.Fatalf("Put failed: %v", err)
+	}
+	blob, err := store.Open(name)
+	if err != nil {
+		t.Fatalf("Open failed: %v", err)
+	}
+	if blob.Size != 10 || blob.ModTime.IsZero() {
+		t.Errorf("unexpected blob metadata size=%d modtime=%v", blob.Size, blob.ModTime)
+	}
+	seeker, ok := blob.Content.(io.ReadSeeker)
+	if !ok {
+		t.Fatal("Content is not an io.ReadSeeker")
+	}
+	if _, err := seeker.Seek(4, io.SeekStart); err != nil {
+		t.Fatalf("Seek failed: %v", err)
+	}
+	chunk := make([]byte, 3)
+	if _, err := io.ReadFull(seeker, chunk); err != nil || string(chunk) != "456" {
+		t.Errorf("ranged read = %q, %v", chunk, err)
+	}
+	_ = blob.Content.Close()
+
+	if err := store.Delete(name); err != nil {
+		t.Fatalf("Delete failed: %v", err)
+	}
+	if err := store.Delete(name); err != nil {
+		t.Errorf("deleting a missing key must not fail, got %v", err)
+	}
+	if _, err := store.Open(name); !errors.Is(err, domainImage.ErrBlobNotFound) {
+		t.Errorf("expected ErrBlobNotFound after delete, got %v", err)
+	}
+}