pub fn test_patch(xml_str: &str, patch_str: &str, expected_result: &str) {
let result_str = patch_xml::patch_xml(xml_str.to_string(), patch_str.to_string());
assert_eq!(
result_str.unwrap(),
format!(
r#"<?xml version="1.0" encoding="UTF-8"?>{}"#,
expected_result
)
.to_string()
);
}