fix: use path instead of filepath for S3 object paths on Windows (#7739)

fix: use path instead of filepath for S3 object paths on Windows (#7733)

weed/s3api/filer_multipart_test.go

@@ -1,12 +1,13 @@
 package s3api
 
 import (
+	"testing"
+	"time"
+
 	"github.com/aws/aws-sdk-go/aws"
 	"github.com/aws/aws-sdk-go/service/s3"
 	"github.com/seaweedfs/seaweedfs/weed/s3api/s3err"
 	"github.com/stretchr/testify/assert"
-	"testing"
-	"time"
 )
 
 func TestInitiateMultipartUploadResult(t *testing.T) {
@@ -74,3 +75,60 @@ func Test_parsePartNumber(t *testing.T) {
 		})
 	}
 }
+
+func TestGetEntryNameAndDir(t *testing.T) {
+	s3a := &S3ApiServer{
+		option: &S3ApiServerOption{
+			BucketsPath: "/buckets",
+		},
+	}
+
+	tests := []struct {
+		name            string
+		bucket          string
+		key             string
+		expectedName    string
+		expectedDirEnd  string // We check the suffix since dir includes BucketsPath
+	}{
+		{
+			name:           "simple file at root",
+			bucket:         "test-bucket",
+			key:            "/file.txt",
+			expectedName:   "file.txt",
+			expectedDirEnd: "/buckets/test-bucket",
+		},
+		{
+			name:           "file in subdirectory",
+			bucket:         "test-bucket",
+			key:            "/folder/file.txt",
+			expectedName:   "file.txt",
+			expectedDirEnd: "/buckets/test-bucket/folder",
+		},
+		{
+			name:           "file in nested subdirectory",
+			bucket:         "test-bucket",
+			key:            "/folder/subfolder/file.txt",
+			expectedName:   "file.txt",
+			expectedDirEnd: "/buckets/test-bucket/folder/subfolder",
+		},
+		{
+			name:           "key without leading slash",
+			bucket:         "test-bucket",
+			key:            "folder/file.txt",
+			expectedName:   "file.txt",
+			expectedDirEnd: "/buckets/test-bucket/folder",
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			input := &s3.CompleteMultipartUploadInput{
+				Bucket: aws.String(tt.bucket),
+				Key:    aws.String(tt.key),
+			}
+			entryName, dirName := s3a.getEntryNameAndDir(input)
+			assert.Equal(t, tt.expectedName, entryName, "entry name mismatch")
+			assert.Equal(t, tt.expectedDirEnd, dirName, "directory mismatch")
+		})
+	}
+}