From 413f16a06bb69dd34e660e2a636006e47f658ddc Mon Sep 17 00:00:00 2001
From: Zhao Chen <winters.zc@antgroup.com>
Date: Fri, 24 Apr 2026 15:05:42 +0800
Subject: [PATCH] test(backend): cover upload missing file stat error

Signed-off-by: Zhao Chen <winters.zc@antgroup.com>
---
 pkg/backend/upload_test.go | 43 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 43 insertions(+)
 create mode 100644 pkg/backend/upload_test.go

diff --git a/pkg/backend/upload_test.go b/pkg/backend/upload_test.go
new file mode 100644
index 0000000..dcb159a
--- /dev/null
+++ b/pkg/backend/upload_test.go
@@ -0,0 +1,43 @@
+/*
+ *     Copyright 2025 The CNAI 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 backend
+
+import (
+	"context"
+	"path/filepath"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+
+	"github.com/modelpack/modctl/pkg/config"
+	mockstore "github.com/modelpack/modctl/test/mocks/storage"
+)
+
+func TestUploadMissingFileReturnsProcessorStatError(t *testing.T) {
+	b := &backend{store: &mockstore.Storage{}}
+	missingFile := filepath.Join(t.TempDir(), "missing.unknown")
+
+	err := b.Upload(context.Background(), missingFile, &config.Upload{
+		Repo: "example.com/acme/model",
+	})
+
+	if assert.Error(t, err) {
+		assert.ErrorContains(t, err, "failed to get processor")
+		assert.ErrorContains(t, err, "failed to stat file")
+		assert.ErrorContains(t, err, missingFile)
+	}
+}