feat: add tests

README.md

@@ -205,6 +205,7 @@ Project or files:
 │   ├── async_await
 │   ├── into
 │   ├── iter
+│   ├── misc
 │   ├── ops
 │   └── thread
 ├── __template
@@ -215,6 +216,7 @@ Project or files:
 │   ├── colored_msg
 │   ├── confy_table
 │   ├── cursive-demo
+│   ├── dialoguer-demo
 │   ├── indicatif
 │   ├── prettyprint
 │   ├── rustyline
@@ -280,6 +282,6 @@ Project or files:
     ├── vec.rs
     └── while.rs
 
-249 directories, 40 files
+251 directories, 40 files
 ```
 

__std/misc/src/bin/cursor_test.rs

@@ -0,0 +1,17 @@
+use std::io::{BufRead, Cursor, Read};
+
+fn main() {
+    let mut cursor = Cursor::new(b"hello world\n001");
+    println!("{}", cursor.position());
+    let mut buff = [0_u8; 5];
+    cursor.read_exact(&mut buff).unwrap();
+    println!("{:x?}", buff);
+    println!("{}", cursor.position());
+    let mut s = String::new();
+    cursor.read_line(&mut s).unwrap();
+    println!("[{}]", s);
+    println!("{}", cursor.position());
+    let mut s2 = String::new();
+    cursor.read_to_string(&mut s2).unwrap();
+    println!("[{}]", s2);
+}