From 71482339503933d2ac94361ef34270dfa7de35ea Mon Sep 17 00:00:00 2001
From: olivia <olivia@fastmail.com>
Date: Thu, 26 Apr 2018 22:14:20 +0200
Subject: [PATCH] add a sample

---
 src/lib.rs | 23 ++++++++++++++++++-----
 1 file changed, 18 insertions(+), 5 deletions(-)

diff --git a/src/lib.rs b/src/lib.rs
index 31e1bb20..9adcf567 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1,7 +1,20 @@
-#[cfg(test)]
-mod tests {
-    #[test]
-    fn it_works() {
-        assert_eq!(2 + 2, 4);
+#[allow(dead_code)]
+mod about_variables {
+    pub fn guess_this () -> i32 {
+        let one = 5;
+        let two = 7;
+        let three = 3;
+        let result = (one + two) / three;
+        result
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::about_variables::*;
+
+    #[test]
+    fn test_complicated () {
+        assert_eq!(___, guess_this());
     }
 }