#[test]
fn header_json_format() {
let header = serde_json::json!({
"num": 0,
"total": 1,
"fileLength": 12345,
"fileName": "test_upload",
"fileType": "JPEG",
"secKey": "abc123",
"version": "0.0.1"
});
let header_str = header.to_string();
let parsed: serde_json::Value = serde_json::from_str(&header_str).unwrap();
assert_eq!(parsed["fileLength"], 12345);
assert_eq!(parsed["fileType"], "JPEG");
assert_eq!(parsed["version"], "0.0.1");
}