Rust: Add test cases (generated by LLM).

Author: geoffw0

rust/ql/test/query-tests/security/CWE-312/test_logging.rs

@@ -2,6 +2,7 @@
 use log::{debug, error, info, trace, warn, log, Level};
 use std::io::Write as _;
 use std::fmt::Write as _;
+use log_err::{LogErrOption, LogErrResult};
 
 // --- tests ---
 
@@ -146,6 +147,32 @@ fn test_log(harmless: String, password: String, encrypted_password: String) {
     warn!("message = {}", s2); // (this implementation does not output the password field)
     warn!("message = {:?}", s2); // $ MISSING: Alert[rust/cleartext-logging]=s2
     warn!("message = {:#?}", s2); // $ MISSING: Alert[rust/cleartext-logging]=s2
+
+    // test log_expect with sensitive data
+    let password2 = "123456".to_string(); // Create new password for this test
+    let sensitive_opt: Option<String> = Some(password2.clone());
+
+    // log_expect tests with LogErrOption trait
+    let _ = sensitive_opt.log_expect("Option is None"); // $ Alert[rust/cleartext-logging]
+
+    // log_expect tests with LogErrResult trait
+    let sensitive_result: Result<String, &str> = Ok(password2.clone());
+    let _ = sensitive_result.log_expect("Result failed"); // $ Alert[rust/cleartext-logging]
+
+    // log_unwrap tests with LogErrOption trait
+    let sensitive_opt2: Option<String> = Some(password2.clone());
+    let _ = sensitive_opt2.log_unwrap(); // $ Alert[rust/cleartext-logging]
+
+    // log_unwrap tests with LogErrResult trait
+    let sensitive_result2: Result<String, &str> = Ok(password2.clone());
+    let _ = sensitive_result2.log_unwrap(); // $ Alert[rust/cleartext-logging]
+
+    // Negative cases that should fail and log
+    let none_opt: Option<String> = None;
+    let _ = none_opt.log_expect(&format!("Failed with password: {}", password2)); // $ Alert[rust/cleartext-logging]
+
+    let err_result: Result<String, String> = Err(password2);
+    let _ = err_result.log_unwrap(); // $ Alert[rust/cleartext-logging]
 }
 
 fn test_std(password: String, i: i32, opt_i: Option<i32>) {