From da719ad20a7bdd0cd99b5dbb40cd1aaffab35d86 Mon Sep 17 00:00:00 2001
From: Jack Wrenn <me@jswrenn.com>
Date: Fri, 4 Sep 2020 18:24:18 -0400
Subject: [PATCH] quickcheck for DoubleEndedIterator on Zip

---
 tests/quick.rs | 28 ++++++++++++++++++++++++++++
 tests/zip.rs   |  2 --
 2 files changed, 28 insertions(+), 2 deletions(-)

diff --git a/tests/quick.rs b/tests/quick.rs
index 8208a887c..ff05a478c 100644
--- a/tests/quick.rs
+++ b/tests/quick.rs
@@ -1209,3 +1209,31 @@ quickcheck! {
         TestResult::passed()
     }
 }
+
+quickcheck! {
+    fn test_double_ended_zip_2(a: Vec<u8>, b: Vec<u8>) -> TestResult {
+        let mut x =
+          multizip((a.clone().into_iter(), b.clone().into_iter()))
+            .collect_vec();
+        x.reverse();
+
+        let y =
+          multizip((a.into_iter(), b.into_iter()))
+          .rfold(Vec::new(), |mut vec, e| { vec.push(e); vec });
+
+        TestResult::from_bool(itertools::equal(x, y))
+    }
+
+    fn test_double_ended_zip_3(a: Vec<u8>, b: Vec<u8>, c: Vec<u8>) -> TestResult {
+        let mut x =
+          multizip((a.clone().into_iter(), b.clone().into_iter(), c.clone().into_iter()))
+            .collect_vec();
+        x.reverse();
+
+        let y =
+          multizip((a.into_iter(), b.into_iter(), c.into_iter()))
+          .rfold(Vec::new(), |mut vec, e| { vec.push(e); vec });
+
+        TestResult::from_bool(itertools::equal(x, y))
+    }
+}
diff --git a/tests/zip.rs b/tests/zip.rs
index f1bd62ee2..5801b4232 100644
--- a/tests/zip.rs
+++ b/tests/zip.rs
@@ -75,5 +75,3 @@ fn zip_eq_panic2()
 
     zip_eq(&a, &b).count();
 }
-
-