assert_eq!(data, "ประเทศไทย中");
}
+#[test]
+fn test_split_off_empty() {
+ let orig = "Hello, world!";
+ let mut split = String::from(orig);
+ let empty: String = split.split_off(orig.len());
+ assert!(empty.is_empty());
+}
+
+#[test]
+#[should_panic]
+fn test_split_off_past_end() {
+ let orig = "Hello, world!";
+ let mut split = String::from(orig);
+ split.split_off(orig.len() + 1);
+}
+
+#[test]
+#[should_panic]
+fn test_split_off_mid_char() {
+ let mut orig = String::from("山");
+ orig.split_off(1);
+}
+
+#[test]
+fn test_split_off_ascii() {
+ let mut ab = String::from("ABCD");
+ let cd = ab.split_off(2);
+ assert_eq!(ab, "AB");
+ assert_eq!(cd, "CD");
+}
+
+#[test]
+fn test_split_off_unicode() {
+ let mut nihon = String::from("日本語");
+ let go = nihon.split_off("日本".len());
+ assert_eq!(nihon, "日本");
+ assert_eq!(go, "語");
+}
+
#[test]
fn test_str_truncate() {
let mut s = String::from("12345");