fix doc test

string/string.mbt

@@ -19,9 +19,9 @@
 ///
 /// ```
 /// let s = "Hello🤣";
-/// assert_eq!(s.code_unit_at(0), 'H');
-/// assert_eq!(s.code_unit_at(5), '\ud83e'); // First surrogate of 🤣
-/// assert_eq!(s.code_unit_at(6), '\udd23'); // Second surrogate of 🤣
+/// inspect!(s.code_unit_at(0), content="'H'");
+/// inspect!(s.code_unit_at(5).to_int(), content="55358"); // First surrogate of 🤣
+/// inspect!(s.code_unit_at(6).to_int(), content="'�'"); // Second surrogate of 🤣
 /// ```
 ///
 /// # Panics
@@ -44,8 +44,8 @@ pub fn code_unit_at(self : String, index : Int) -> Char {
 ///
 /// ```
 /// let s = "Hello🤣";
-/// assert_eq!(s.code_point_at(0), 'H');
-/// assert_eq!(s.code_point_at(5), '🤣'); // Returns full emoji character
+/// inspect!(s.code_point_at(0), content="'H'");
+/// inspect!(s.code_point_at(5), content="'🤣'"); // Returns full emoji character
 /// ```
 ///
 /// # Panics
@@ -99,8 +99,8 @@ pub fn code_point_at(self : String, index : Int) -> Char {
 ///
 /// ```
 /// let s = "Hello🤣";
-/// assert_eq!(s.code_unit_length(), 7); // 5 ASCII chars + 2 surrogate pairs
-/// assert_eq!(s.code_point_length(), 6); // 6 actual characters
+/// inspect!(s.code_unit_length(), content = "7"); // 5 ASCII chars + 2 surrogate pairs
+/// inspect!(s.code_point_length(), content = "6"); // 6 actual characters
 /// ```
 pub fn code_unit_length(self : String) -> Int {
   self.unsafe_length()
@@ -117,8 +117,8 @@ pub fn code_unit_length(self : String) -> Int {
 ///
 /// ```
 /// let s = "Hello🤣";
-/// assert_eq!(s.code_point_length(), 6); // 6 actual characters
-/// assert_eq!(s.code_unit_length(), 7);  // 5 ASCII chars + 2 surrogate pairs
+/// inspect!(s.code_point_length(), content = "6"); // 6 actual characters
+/// inspect!(s.code_unit_length(), content = "7");  // 5 ASCII chars + 2 surrogate pairs
 /// ```
 pub fn code_point_length(self : String) -> Int {
   let code_unit_len = self.unsafe_length()