leap: add years that refute some unusual factors (#98)

exercism/problem-specifications#1581

Author: petertseng

exercises/leap/.meta/tests.toml

@@ -10,19 +10,19 @@
 "4fe9b84c-8e65-489e-970b-856d60b8b78e" = true
 
 # year divisible by 4 and 5 is still a leap year
-"7fc6aed7-e63c-48f5-ae05-5fe182f60a5d" = false
+"7fc6aed7-e63c-48f5-ae05-5fe182f60a5d" = true
 
 # year divisible by 100, not divisible by 400 in common year
 "78a7848f-9667-4192-ae53-87b30c9a02dd" = true
 
 # year divisible by 100 but not by 3 is still not a leap year
-"9d70f938-537c-40a6-ba19-f50739ce8bac" = false
+"9d70f938-537c-40a6-ba19-f50739ce8bac" = true
 
 # year divisible by 400 in leap year
 "42ee56ad-d3e6-48f1-8e3f-c84078d916fc" = true
 
 # year divisible by 400 but not by 125 is still a leap year
-"57902c77-6fe9-40de-8302-587b5c27121e" = false
+"57902c77-6fe9-40de-8302-587b5c27121e" = true
 
 # year divisible by 200, not divisible by 400 in common year
 "c30331f6-f9f6-4881-ad38-8ca8c12520c1" = true

exercises/leap/source/leap/LeapTest.ceylon

@@ -8,8 +8,11 @@ import ceylon.test {
     [2015, false],
     [1970, false],
     [1996, true],
+    [1960, true],
     [2100, false],
+    [1900, false],
     [2000, true],
+    [2400, true],
     [1800, false]
 };