Add string tests to Rust API

Author: emesare

rust/tests/string.rs

@@ -0,0 +1,51 @@
+use binaryninja::string::{BnString, IntoCStr};
+use std::ffi::{CStr, CString};
+
+#[test]
+fn test_bnstring() {
+    // Test a basic ASCII string
+    let str_0 = BnString::new("test");
+    assert_eq!(str_0.to_string_lossy(), "test");
+    assert_eq!(str_0.to_bytes_with_nul(), b"test\0");
+
+    // Test non-UTF8 bytes
+    let invalid_utf8 = CStr::from_bytes_with_nul(&[0x48, 0x65, 0x6C, 0x6C, 0x6F, 0xFF, 0x00])
+        .expect("Failed to create string");
+    let str_2 = BnString::new(invalid_utf8);
+    assert_eq!(str_2.to_string_lossy(), "Hello�");
+    assert_eq!(
+        str_2.to_bytes_with_nul(),
+        &[0x48, 0x65, 0x6C, 0x6C, 0x6F, 0xFF, 0x00]
+    );
+
+    // Test empty string
+    let str_3 = BnString::new("");
+    assert_eq!(str_3.to_string_lossy(), "");
+    assert_eq!(str_3.to_bytes_with_nul(), b"\0");
+
+    // Test string with Unicode
+    let str_4 = BnString::new("Hello 世界");
+    assert_eq!(str_4.to_string_lossy(), "Hello 世界");
+    assert_eq!(
+        str_4.to_bytes_with_nul(),
+        b"Hello \xE4\xB8\x96\xE7\x95\x8C\0"
+    );
+}
+
+#[test]
+fn test_cstr() {
+    let str_0 = BnString::new("test");
+    let cstr_0: BnString = str_0.to_cstr();
+    assert_eq!(cstr_0.to_str().unwrap(), "test");
+    assert_eq!(cstr_0.to_bytes_with_nul(), b"test\0");
+
+    let str_1 = String::from("test");
+    let cstr_1: CString = str_1.to_cstr();
+    assert_eq!(cstr_1.to_str().unwrap(), "test");
+    assert_eq!(cstr_1.to_bytes_with_nul(), b"test\0");
+
+    let str_2 = "test";
+    let cstr_2: CString = str_2.to_cstr();
+    assert_eq!(cstr_2.to_str().unwrap(), "test");
+    assert_eq!(cstr_2.to_bytes_with_nul(), b"test\0");
+}