From 251d0dda345e6b3d067232a32db7afad098c8522 Mon Sep 17 00:00:00 2001
From: Paulo Gabriel Justino Bezerra <pgjbzr@gmail.com>
Date: Thu, 13 Jan 2022 18:11:52 -0300
Subject: [PATCH] feat(iterators4): add factorial of zero test

---
 exercises/standard_library_types/iterators4.rs | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/exercises/standard_library_types/iterators4.rs b/exercises/standard_library_types/iterators4.rs
index 88862838..0b3b5d88 100644
--- a/exercises/standard_library_types/iterators4.rs
+++ b/exercises/standard_library_types/iterators4.rs
@@ -18,6 +18,11 @@ pub fn factorial(num: u64) -> u64 {
 mod tests {
     use super::*;
 
+    #[test]
+    fn factorial_of_0() {
+        assert_eq!(1, factorial(0));
+    }
+
     #[test]
     fn factorial_of_1() {
         assert_eq!(1, factorial(1));