feat: support image upload

model/content_test.go

@@ -0,0 +1,33 @@
+package model
+
+import (
+	"encoding/base64"
+	"strings"
+	"testing"
+)
+
+const contentTextSmallImage = "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mNk+A8AAQUBAScY42YAAAAASUVORK5CYII="
+
+func TestContentImageDataBytes(t *testing.T) {
+	// 从 smallimg 中提取 base64 数据
+	parts := strings.Split(contentTextSmallImage, ",")
+	if len(parts) != 2 {
+		t.Fatal("Invalid data URL format")
+	}
+
+	// 解码 base64 数据
+	data, err := base64.StdEncoding.DecodeString(parts[1])
+	if err != nil {
+		t.Fatalf("Failed to decode base64: %v", err)
+	}
+
+	s, err := NewContentImageDataBase64URL(data)
+	if err != nil {
+		t.Fatalf("NewContentImageDataBytes failed: %v", err)
+	}
+
+	// 比较结果
+	if s != contentTextSmallImage {
+		t.Errorf("Expected %s, got %s", contentTextSmallImage, s)
+	}
+}