internal/graphicscommand: bug fix: missing file

Updates #3036

internal/graphicscommand/export_test.go

@@ -0,0 +1,21 @@
+// Copyright 2024 The Ebitengine Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package graphicscommand
+
+type WritePixelsCommandArgs = writePixelsCommandArgs
+
+func (i *Image) BufferedWritePixelsArgsForTesting() []WritePixelsCommandArgs {
+	return i.bufferedWritePixelsArgs
+}