Adding upstream version 0.28.1.

Signed-off-by: Daniel Baumann <daniel@debian.org>

tests/request.go

@@ -0,0 +1,63 @@
+package tests
+
+import (
+	"bytes"
+	"io"
+	"mime/multipart"
+	"os"
+)
+
+// MockMultipartData creates a mocked multipart/form-data payload.
+//
+// Example
+//
+//	data, mp, err := tests.MockMultipartData(
+//		map[string]string{"title": "new"},
+//		"file1",
+//		"file2",
+//		...
+//	)
+func MockMultipartData(data map[string]string, fileFields ...string) (*bytes.Buffer, *multipart.Writer, error) {
+	body := new(bytes.Buffer)
+	mp := multipart.NewWriter(body)
+	defer mp.Close()
+
+	// write data fields
+	for k, v := range data {
+		mp.WriteField(k, v)
+	}
+
+	// write file fields
+	for _, fileField := range fileFields {
+		// create a test temporary file
+		err := func() error {
+			tmpFile, err := os.CreateTemp(os.TempDir(), "tmpfile-*.txt")
+			if err != nil {
+				return err
+			}
+
+			if _, err := tmpFile.Write([]byte("test")); err != nil {
+				return err
+			}
+			tmpFile.Seek(0, 0)
+			defer tmpFile.Close()
+			defer os.Remove(tmpFile.Name())
+
+			// stub uploaded file
+			w, err := mp.CreateFormFile(fileField, tmpFile.Name())
+			if err != nil {
+				return err
+			}
+			if _, err := io.Copy(w, tmpFile); err != nil {
+				return err
+			}
+
+			return nil
+		}()
+		if err != nil {
+			return nil, nil, err
+		}
+	}
+
+	return body, mp, nil
+}