leap

rust/leap/tests/leap.rs

@@ -0,0 +1,46 @@
+use leap::*;
+
+#[test]
+fn year_not_divisible_by_4_in_common_year() {
+    assert!(!is_leap_year(2015));
+}
+
+#[test]
+fn year_divisible_by_2_not_divisible_by_4_in_common_year() {
+    assert!(!is_leap_year(1970));
+}
+
+#[test]
+fn year_divisible_by_4_not_divisible_by_100_in_leap_year() {
+    assert!(is_leap_year(1996));
+}
+
+#[test]
+fn year_divisible_by_4_and_5_is_still_a_leap_year() {
+    assert!(is_leap_year(1960));
+}
+
+#[test]
+fn year_divisible_by_100_not_divisible_by_400_in_common_year() {
+    assert!(!is_leap_year(2100));
+}
+
+#[test]
+fn year_divisible_by_100_but_not_by_3_is_still_not_a_leap_year() {
+    assert!(!is_leap_year(1900));
+}
+
+#[test]
+fn year_divisible_by_400_is_leap_year() {
+    assert!(is_leap_year(2000));
+}
+
+#[test]
+fn year_divisible_by_400_but_not_by_125_is_still_a_leap_year() {
+    assert!(is_leap_year(2400));
+}
+
+#[test]
+fn year_divisible_by_200_not_divisible_by_400_in_common_year() {
+    assert!(!is_leap_year(1800));
+}