Lines of tests/utils.rs from check-in dd307557e6 that are changed by the sequence of edits moving toward check-in 6e7d1e877b:

                         1: use smtp2tg::utils::{
                         2: 	validate,
                         3: 	RE_CLOSING,
                         4: 	RE_DOMAIN,
                         5: };
                         6: use stacked_errors::Result;
                         7: 
                         8: #[test]
dd307557e6 2026-07-31    9: fn test_validate_valid_html() -> Result<()> {
dd307557e6 2026-07-31   10: 	let html = "<p>Some <b>valid</b> HTML</p>";
dd307557e6 2026-07-31   11: 	let escaped = validate(html)?;
dd307557e6 2026-07-31   12: 	assert_eq!(escaped, "&lt;p&gt;Some &lt;b&gt;valid&lt;/b&gt; HTML&lt;/p&gt;");
dd307557e6 2026-07-31   13: 	Ok(())
dd307557e6 2026-07-31   14: }
dd307557e6 2026-07-31   15: 
dd307557e6 2026-07-31   16: #[test]
dd307557e6 2026-07-31   17: fn test_validate_closing_tag() -> Result<()> {
dd307557e6 2026-07-31   18: 	let html = "<p>Some <b>valid</b> HTML</p></code><a href='http://somewere.com'>Link injection!</a>";
dd307557e6 2026-07-31   19: 	assert!(validate(html).is_err());
dd307557e6 2026-07-31   20:     assert!(validate("</pre>").is_err());
dd307557e6 2026-07-31   21:     assert!(validate("</code>").is_err());
dd307557e6 2026-07-31   22:     assert!(validate("</pre>\n").is_err());
dd307557e6 2026-07-31   23:     assert!(validate("</code>\t").is_err());
dd307557e6 2026-07-31   24: 	Ok(())
dd307557e6 2026-07-31   25: }
dd307557e6 2026-07-31   26: 
dd307557e6 2026-07-31   27: #[test]
dd307557e6 2026-07-31   28: fn test_validate_empty_string() -> Result<()> {
dd307557e6 2026-07-31   29: 	assert_eq!(validate("").unwrap(), "");
dd307557e6 2026-07-31   30: 	Ok(())
dd307557e6 2026-07-31   31: }
dd307557e6 2026-07-31   32: 
dd307557e6 2026-07-31   33: #[test]
dd307557e6 2026-07-31   34: fn test_validate_whitespace() -> Result<()> {
dd307557e6 2026-07-31   35: 	assert_eq!(validate("   \t\n").unwrap(), "   \t\n"); // no escaping for whitespace
                        36: 	Ok(())
                        37: }
                        38: 
                        39: #[test]
dd307557e6 2026-07-31   40: fn test_regex_closing_tag_matches() {
dd307557e6 2026-07-31   41: 	assert!(RE_CLOSING.is_match("</pre>"));
dd307557e6 2026-07-31   42: 	assert!(RE_CLOSING.is_match("</code>\t>"));
dd307557e6 2026-07-31   43: 	assert!(!RE_CLOSING.is_match("</div>")); // Not a pre/code tag
                        44: }
                        45: 
                        46: #[test]
dd307557e6 2026-07-31   47: fn test_regex_domain_matches() {
dd307557e6 2026-07-31   48: 	assert!(RE_DOMAIN.is_match("example.com"));
dd307557e6 2026-07-31   49: 	assert!(RE_DOMAIN.is_match("sub.example.co.uk"));
dd307557e6 2026-07-31   50: 	assert!(!RE_DOMAIN.is_match("invalid@domain.com"));
                        51: }