Create leap year exercise

basic/leap_year.lua

@@ -0,0 +1,26 @@
+function leap_year(year)
+   -- Your solution here
+end
+
+-- Tests -----------------------------------------------------------------------
+
+package.path = package.path .. ";../luaunit/?.lua"
+local luaunit = require("luaunit")
+
+function test_2004_is_leap_year()
+   luaunit.assertTrue(leap_year(2004))
+end
+
+function test_1993_is_not_leap_year()
+   luaunit.assertFalse(leap_year(1993))
+end
+
+function test_1900_is_not_leap_year()
+   luaunit.assertFalse(leap_year(1900))
+end
+
+function test_2000_is_leap_year()
+   luaunit.assertTrue(leap_year(2000))
+end
+
+os.exit(luaunit.LuaUnit.run())