From 311527f471d06656ef84976617e78ada74285f4e Mon Sep 17 00:00:00 2001
From: Emerentius <emerentius@arcor.de>
Date: Tue, 14 Aug 2018 15:35:08 +0200
Subject: [PATCH] leap: add more test cases

just 5 cases are likely to let some bugs slip through
added a check for a range of years (1600 to 1699) and
some additional centuries
---
 exercises/leap/tests/leap.rs | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/exercises/leap/tests/leap.rs b/exercises/leap/tests/leap.rs
index 7aaa37137..422951686 100644
--- a/exercises/leap/tests/leap.rs
+++ b/exercises/leap/tests/leap.rs
@@ -14,12 +14,27 @@ fn test_any_old_year() {
 #[test]
 #[ignore]
 fn test_century() {
+    assert_eq!(leap::is_leap_year(1700), false);
+    assert_eq!(leap::is_leap_year(1800), false);
     assert_eq!(leap::is_leap_year(1900), false);
 }
 
 #[test]
 #[ignore]
 fn test_exceptional_centuries() {
+    assert_eq!(leap::is_leap_year(1600), true);
     assert_eq!(leap::is_leap_year(2000), true);
     assert_eq!(leap::is_leap_year(2400), true);
 }
+
+#[test]
+#[ignore]
+fn test_years_1600_to_1699() {
+    let incorrect_years = (1600..1700)
+        .filter(|&year| leap::is_leap_year(year) != (year % 4 == 0))
+        .collect::<Vec<_>>();
+
+    if !incorrect_years.is_empty() {
+        panic!("incorrect result for years: {:?}", incorrect_years);
+    }
+}