From fe5c16450ce8a853a1b395153ecb9536811a3239 Mon Sep 17 00:00:00 2001
From: Hatter Jiang <jht5945@gmail.com>
Date: Mon, 8 Jan 2024 00:16:29 +0800
Subject: [PATCH] feat: update tests

---
 __std/misc/src/bin/chain_test.rs | 30 ++++++++++++++++++++++++++++++
 __std/misc/src/bin/move_test.rs  |  4 ++--
 __std/misc/src/bin/never_test.rs |  7 +++++++
 __std/misc/src/bin/slice_test.rs |  8 ++++++++
 4 files changed, 47 insertions(+), 2 deletions(-)
 create mode 100644 __std/misc/src/bin/chain_test.rs
 create mode 100644 __std/misc/src/bin/never_test.rs
 create mode 100644 __std/misc/src/bin/slice_test.rs

diff --git a/__std/misc/src/bin/chain_test.rs b/__std/misc/src/bin/chain_test.rs
new file mode 100644
index 0000000..90c911f
--- /dev/null
+++ b/__std/misc/src/bin/chain_test.rs
@@ -0,0 +1,30 @@
+#[derive(Debug)]
+struct Node {
+    value: i32,
+    next: Option<Box<Node>>,
+}
+
+fn build_chain() -> Option<Box<Node>> {
+    let mut p = None;
+    for i in 0..3 {
+        p = Some(Box::new(Node {
+            value: i,
+            next: p,
+        }));
+    }
+    p
+}
+
+fn print_chain(mut p: &Option<Box<Node>>) {
+    let mut values = vec![];
+    while let Some(node) = p {
+        values.push(node.value.to_string());
+        p = &node.next;
+    }
+    println!("{}", values.join(" -> "))
+}
+
+fn main() {
+    let p = build_chain();
+    print_chain(&p);
+}
\ No newline at end of file
diff --git a/__std/misc/src/bin/move_test.rs b/__std/misc/src/bin/move_test.rs
index eb94c78..0239eec 100644
--- a/__std/misc/src/bin/move_test.rs
+++ b/__std/misc/src/bin/move_test.rs
@@ -5,6 +5,6 @@ fn print_name(name: String) {
 fn main() {
     let name = String::from("Hatter");
     print_name(name);
-    let name_ref = &name;
-    println!("Name: {}", name_ref);
+    // let name_ref = &name;
+    // println!("Name: {}", name_ref);
 }
\ No newline at end of file
diff --git a/__std/misc/src/bin/never_test.rs b/__std/misc/src/bin/never_test.rs
new file mode 100644
index 0000000..48f2e1e
--- /dev/null
+++ b/__std/misc/src/bin/never_test.rs
@@ -0,0 +1,7 @@
+fn fail_and_exit() -> ! {
+    panic!("failed.");
+}
+
+fn main() {
+    fail_and_exit();
+}
\ No newline at end of file
diff --git a/__std/misc/src/bin/slice_test.rs b/__std/misc/src/bin/slice_test.rs
new file mode 100644
index 0000000..a1516e9
--- /dev/null
+++ b/__std/misc/src/bin/slice_test.rs
@@ -0,0 +1,8 @@
+fn len(arr: &[u8]) -> usize {
+    arr.len()
+}
+
+fn main() {
+    let a = "hello world".as_bytes();
+    println!("{}", len(a));
+}
\ No newline at end of file