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-rwxr-xr-xrust-book/add/add-one/src/lib.rs11
1 files changed, 11 insertions, 0 deletions
diff --git a/rust-book/add/add-one/src/lib.rs b/rust-book/add/add-one/src/lib.rs
new file mode 100755
index 0000000..fe3583e
--- /dev/null
+++ b/rust-book/add/add-one/src/lib.rs
@@ -0,0 +1,11 @@
+pub fn add_one(x: i32) -> i32 {
+ x + 1
+}
+
+#[cfg(test)]
+mod tests {
+ #[test]
+ fn it_works() {
+ assert_eq!(2 + 2, 4);
+ }
+}