diff --git a/test/shamsi_date_test.dart b/test/shamsi_date_test.dart
index da2a947..ccad909 100644
--- a/test/shamsi_date_test.dart
+++ b/test/shamsi_date_test.dart
@@ -1565,6 +1565,890 @@ void main() {
       1 * 60 * 60 * 1000 + 2 * 60 * 1000 + 3 * 1000 + 4,
     );
   });
+
+  test('Iranian Calendar Authority Test Cases', () {
+    // Persian leap year data provided by the Iranian calendar authority at:
+    // https://calendar.ut.ac.ir/Fa/News/Data/Doc/KabiseShamsi1206-1498-new.pdf
+
+    expect(Gregorian(1827, 3, 22), Jalali(1206));
+    expect(false, Jalali(1206).isLeapYear());
+
+    expect(Gregorian(1828, 3, 21), Jalali(1207));
+    expect(false, Jalali(1207).isLeapYear());
+
+    expect(Gregorian(1829, 3, 21), Jalali(1208));
+    expect(false, Jalali(1208).isLeapYear());
+
+    expect(Gregorian(1830, 3, 21), Jalali(1209));
+    expect(false, Jalali(1209).isLeapYear());
+
+    expect(Gregorian(1831, 3, 21), Jalali(1210));
+    expect(true, Jalali(1210).isLeapYear());
+
+    expect(Gregorian(1832, 3, 21), Jalali(1211));
+    expect(false, Jalali(1211).isLeapYear());
+
+    expect(Gregorian(1833, 3, 21), Jalali(1212));
+    expect(false, Jalali(1212).isLeapYear());
+
+    expect(Gregorian(1834, 3, 21), Jalali(1213));
+    expect(false, Jalali(1213).isLeapYear());
+
+    expect(Gregorian(1835, 3, 21), Jalali(1214));
+    expect(true, Jalali(1214).isLeapYear());
+
+    expect(Gregorian(1836, 3, 21), Jalali(1215));
+    expect(false, Jalali(1215).isLeapYear());
+
+    expect(Gregorian(1837, 3, 21), Jalali(1216));
+    expect(false, Jalali(1216).isLeapYear());
+
+    expect(Gregorian(1838, 3, 21), Jalali(1217));
+    expect(false, Jalali(1217).isLeapYear());
+
+    expect(Gregorian(1839, 3, 21), Jalali(1218));
+    expect(true, Jalali(1218).isLeapYear());
+
+    expect(Gregorian(1840, 3, 21), Jalali(1219));
+    expect(false, Jalali(1219).isLeapYear());
+
+    expect(Gregorian(1841, 3, 21), Jalali(1220));
+    expect(false, Jalali(1220).isLeapYear());
+
+    expect(Gregorian(1842, 3, 21), Jalali(1221));
+    expect(false, Jalali(1221).isLeapYear());
+
+    expect(Gregorian(1843, 3, 21), Jalali(1222));
+    expect(true, Jalali(1222).isLeapYear());
+
+    expect(Gregorian(1844, 3, 21), Jalali(1223));
+    expect(false, Jalali(1223).isLeapYear());
+
+    expect(Gregorian(1845, 3, 21), Jalali(1224));
+    expect(false, Jalali(1224).isLeapYear());
+
+    expect(Gregorian(1846, 3, 21), Jalali(1225));
+    expect(false, Jalali(1225).isLeapYear());
+
+    expect(Gregorian(1847, 3, 21), Jalali(1226));
+    expect(true, Jalali(1226).isLeapYear());
+
+    expect(Gregorian(1848, 3, 21), Jalali(1227));
+    expect(false, Jalali(1227).isLeapYear());
+
+    expect(Gregorian(1849, 3, 21), Jalali(1228));
+    expect(false, Jalali(1228).isLeapYear());
+
+    expect(Gregorian(1850, 3, 21), Jalali(1229));
+    expect(false, Jalali(1229).isLeapYear());
+
+    expect(Gregorian(1851, 3, 21), Jalali(1230));
+    expect(true, Jalali(1230).isLeapYear());
+
+    expect(Gregorian(1852, 3, 21), Jalali(1231));
+    expect(false, Jalali(1231).isLeapYear());
+
+    expect(Gregorian(1853, 3, 21), Jalali(1232));
+    expect(false, Jalali(1232).isLeapYear());
+
+    expect(Gregorian(1854, 3, 21), Jalali(1233));
+    expect(false, Jalali(1233).isLeapYear());
+
+    expect(Gregorian(1855, 3, 21), Jalali(1234));
+    expect(true, Jalali(1234).isLeapYear());
+
+    expect(Gregorian(1856, 3, 21), Jalali(1235));
+    expect(false, Jalali(1235).isLeapYear());
+
+    expect(Gregorian(1857, 3, 21), Jalali(1236));
+    expect(false, Jalali(1236).isLeapYear());
+
+    expect(Gregorian(1858, 3, 21), Jalali(1237));
+    expect(false, Jalali(1237).isLeapYear());
+
+    expect(Gregorian(1859, 3, 21), Jalali(1238));
+    expect(true, Jalali(1238).isLeapYear());
+
+    expect(Gregorian(1860, 3, 21), Jalali(1239));
+    expect(false, Jalali(1239).isLeapYear());
+
+    expect(Gregorian(1861, 3, 21), Jalali(1240));
+    expect(false, Jalali(1240).isLeapYear());
+
+    expect(Gregorian(1862, 3, 21), Jalali(1241));
+    expect(false, Jalali(1241).isLeapYear());
+
+    expect(Gregorian(1863, 3, 21), Jalali(1242));
+    expect(false, Jalali(1242).isLeapYear());
+
+    expect(Gregorian(1864, 3, 20), Jalali(1243));
+    expect(true, Jalali(1243).isLeapYear());
+
+    expect(Gregorian(1865, 3, 21), Jalali(1244));
+    expect(false, Jalali(1244).isLeapYear());
+
+    expect(Gregorian(1866, 3, 21), Jalali(1245));
+    expect(false, Jalali(1245).isLeapYear());
+
+    expect(Gregorian(1867, 3, 21), Jalali(1246));
+    expect(false, Jalali(1246).isLeapYear());
+
+    expect(Gregorian(1868, 3, 20), Jalali(1247));
+    expect(true, Jalali(1247).isLeapYear());
+
+    expect(Gregorian(1869, 3, 21), Jalali(1248));
+    expect(false, Jalali(1248).isLeapYear());
+
+    expect(Gregorian(1870, 3, 21), Jalali(1249));
+    expect(false, Jalali(1249).isLeapYear());
+
+    expect(Gregorian(1871, 3, 21), Jalali(1250));
+    expect(false, Jalali(1250).isLeapYear());
+
+    expect(Gregorian(1872, 3, 20), Jalali(1251));
+    expect(true, Jalali(1251).isLeapYear());
+
+    expect(Gregorian(1873, 3, 21), Jalali(1252));
+    expect(false, Jalali(1252).isLeapYear());
+
+    expect(Gregorian(1874, 3, 21), Jalali(1253));
+    expect(false, Jalali(1253).isLeapYear());
+
+    expect(Gregorian(1875, 3, 21), Jalali(1254));
+    expect(false, Jalali(1254).isLeapYear());
+
+    expect(Gregorian(1876, 3, 20), Jalali(1255));
+    expect(true, Jalali(1255).isLeapYear());
+
+    expect(Gregorian(1877, 3, 21), Jalali(1256));
+    expect(false, Jalali(1256).isLeapYear());
+
+    expect(Gregorian(1878, 3, 21), Jalali(1257));
+    expect(false, Jalali(1257).isLeapYear());
+
+    expect(Gregorian(1879, 3, 21), Jalali(1258));
+    expect(false, Jalali(1258).isLeapYear());
+
+    expect(Gregorian(1880, 3, 20), Jalali(1259));
+    expect(true, Jalali(1259).isLeapYear());
+
+    expect(Gregorian(1881, 3, 21), Jalali(1260));
+    expect(false, Jalali(1260).isLeapYear());
+
+    expect(Gregorian(1882, 3, 21), Jalali(1261));
+    expect(false, Jalali(1261).isLeapYear());
+
+    expect(Gregorian(1883, 3, 21), Jalali(1262));
+    expect(false, Jalali(1262).isLeapYear());
+
+    expect(Gregorian(1884, 3, 20), Jalali(1263));
+    expect(true, Jalali(1263).isLeapYear());
+
+    expect(Gregorian(1885, 3, 21), Jalali(1264));
+    expect(false, Jalali(1264).isLeapYear());
+
+    expect(Gregorian(1886, 3, 21), Jalali(1265));
+    expect(false, Jalali(1265).isLeapYear());
+
+    expect(Gregorian(1887, 3, 21), Jalali(1266));
+    expect(false, Jalali(1266).isLeapYear());
+
+    expect(Gregorian(1888, 3, 20), Jalali(1267));
+    expect(true, Jalali(1267).isLeapYear());
+
+    expect(Gregorian(1889, 3, 21), Jalali(1268));
+    expect(false, Jalali(1268).isLeapYear());
+
+    expect(Gregorian(1890, 3, 21), Jalali(1269));
+    expect(false, Jalali(1269).isLeapYear());
+
+    expect(Gregorian(1891, 3, 21), Jalali(1270));
+    expect(false, Jalali(1270).isLeapYear());
+
+    expect(Gregorian(1892, 3, 20), Jalali(1271));
+    expect(true, Jalali(1271).isLeapYear());
+
+    expect(Gregorian(1893, 3, 21), Jalali(1272));
+    expect(false, Jalali(1272).isLeapYear());
+
+    expect(Gregorian(1894, 3, 21), Jalali(1273));
+    expect(false, Jalali(1273).isLeapYear());
+
+    expect(Gregorian(1895, 3, 21), Jalali(1274));
+    expect(false, Jalali(1274).isLeapYear());
+
+    expect(Gregorian(1896, 3, 20), Jalali(1275));
+    expect(false, Jalali(1275).isLeapYear());
+
+    expect(Gregorian(1897, 3, 20), Jalali(1276));
+    expect(true, Jalali(1276).isLeapYear());
+
+    expect(Gregorian(1898, 3, 21), Jalali(1277));
+    expect(false, Jalali(1277).isLeapYear());
+
+    expect(Gregorian(1899, 3, 21), Jalali(1278));
+    expect(false, Jalali(1278).isLeapYear());
+
+    expect(Gregorian(1900, 3, 21), Jalali(1279));
+    expect(false, Jalali(1279).isLeapYear());
+
+    expect(Gregorian(1901, 3, 21), Jalali(1280));
+    expect(true, Jalali(1280).isLeapYear());
+
+    expect(Gregorian(1902, 3, 22), Jalali(1281));
+    expect(false, Jalali(1281).isLeapYear());
+
+    expect(Gregorian(1903, 3, 22), Jalali(1282));
+    expect(false, Jalali(1282).isLeapYear());
+
+    expect(Gregorian(1904, 3, 21), Jalali(1283));
+    expect(false, Jalali(1283).isLeapYear());
+
+    expect(Gregorian(1905, 3, 21), Jalali(1284));
+    expect(true, Jalali(1284).isLeapYear());
+
+    expect(Gregorian(1906, 3, 22), Jalali(1285));
+    expect(false, Jalali(1285).isLeapYear());
+
+    expect(Gregorian(1907, 3, 22), Jalali(1286));
+    expect(false, Jalali(1286).isLeapYear());
+
+    expect(Gregorian(1908, 3, 21), Jalali(1287));
+    expect(false, Jalali(1287).isLeapYear());
+
+    expect(Gregorian(1909, 3, 21), Jalali(1288));
+    expect(true, Jalali(1288).isLeapYear());
+
+    expect(Gregorian(1910, 3, 22), Jalali(1289));
+    expect(false, Jalali(1289).isLeapYear());
+
+    expect(Gregorian(1911, 3, 22), Jalali(1290));
+    expect(false, Jalali(1290).isLeapYear());
+
+    expect(Gregorian(1912, 3, 21), Jalali(1291));
+    expect(false, Jalali(1291).isLeapYear());
+
+    expect(Gregorian(1913, 3, 21), Jalali(1292));
+    expect(true, Jalali(1292).isLeapYear());
+
+    expect(Gregorian(1914, 3, 22), Jalali(1293));
+    expect(false, Jalali(1293).isLeapYear());
+
+    expect(Gregorian(1915, 3, 22), Jalali(1294));
+    expect(false, Jalali(1294).isLeapYear());
+
+    expect(Gregorian(1916, 3, 21), Jalali(1295));
+    expect(false, Jalali(1295).isLeapYear());
+
+    expect(Gregorian(1917, 3, 21), Jalali(1296));
+    expect(true, Jalali(1296).isLeapYear());
+
+    expect(Gregorian(1918, 3, 22), Jalali(1297));
+    expect(false, Jalali(1297).isLeapYear());
+
+    expect(Gregorian(1919, 3, 22), Jalali(1298));
+    expect(false, Jalali(1298).isLeapYear());
+
+    expect(Gregorian(1920, 3, 21), Jalali(1299));
+    expect(false, Jalali(1299).isLeapYear());
+
+    expect(Gregorian(1921, 3, 21), Jalali(1300));
+    expect(true, Jalali(1300).isLeapYear());
+
+    expect(Gregorian(1922, 3, 22), Jalali(1301));
+    expect(false, Jalali(1301).isLeapYear());
+
+    expect(Gregorian(1923, 3, 22), Jalali(1302));
+    expect(false, Jalali(1302).isLeapYear());
+
+    expect(Gregorian(1924, 3, 21), Jalali(1303));
+    expect(false, Jalali(1303).isLeapYear());
+
+    expect(Gregorian(1925, 3, 21), Jalali(1304));
+    expect(true, Jalali(1304).isLeapYear());
+
+    expect(Gregorian(1926, 3, 22), Jalali(1305));
+    expect(false, Jalali(1305).isLeapYear());
+
+    expect(Gregorian(1927, 3, 22), Jalali(1306));
+    expect(false, Jalali(1306).isLeapYear());
+
+    expect(Gregorian(1928, 3, 21), Jalali(1307));
+    expect(false, Jalali(1307).isLeapYear());
+
+    expect(Gregorian(1929, 3, 21), Jalali(1308));
+    expect(false, Jalali(1308).isLeapYear());
+
+    expect(Gregorian(1930, 3, 21), Jalali(1309));
+    expect(true, Jalali(1309).isLeapYear());
+
+    expect(Gregorian(1931, 3, 22), Jalali(1310));
+    expect(false, Jalali(1310).isLeapYear());
+
+    expect(Gregorian(1932, 3, 21), Jalali(1311));
+    expect(false, Jalali(1311).isLeapYear());
+
+    expect(Gregorian(1933, 3, 21), Jalali(1312));
+    expect(false, Jalali(1312).isLeapYear());
+
+    expect(Gregorian(1934, 3, 21), Jalali(1313));
+    expect(true, Jalali(1313).isLeapYear());
+
+    expect(Gregorian(1935, 3, 22), Jalali(1314));
+    expect(false, Jalali(1314).isLeapYear());
+
+    expect(Gregorian(1936, 3, 21), Jalali(1315));
+    expect(false, Jalali(1315).isLeapYear());
+
+    expect(Gregorian(1937, 3, 21), Jalali(1316));
+    expect(false, Jalali(1316).isLeapYear());
+
+    expect(Gregorian(1938, 3, 21), Jalali(1317));
+    expect(true, Jalali(1317).isLeapYear());
+
+    expect(Gregorian(1939, 3, 22), Jalali(1318));
+    expect(false, Jalali(1318).isLeapYear());
+
+    expect(Gregorian(1940, 3, 21), Jalali(1319));
+    expect(false, Jalali(1319).isLeapYear());
+
+    expect(Gregorian(1941, 3, 21), Jalali(1320));
+    expect(false, Jalali(1320).isLeapYear());
+
+    expect(Gregorian(1942, 3, 21), Jalali(1321));
+    expect(true, Jalali(1321).isLeapYear());
+
+    expect(Gregorian(1943, 3, 22), Jalali(1322));
+    expect(false, Jalali(1322).isLeapYear());
+
+    expect(Gregorian(1944, 3, 21), Jalali(1323));
+    expect(false, Jalali(1323).isLeapYear());
+
+    expect(Gregorian(1945, 3, 21), Jalali(1324));
+    expect(false, Jalali(1324).isLeapYear());
+
+    expect(Gregorian(1946, 3, 21), Jalali(1325));
+    expect(true, Jalali(1325).isLeapYear());
+
+    expect(Gregorian(1947, 3, 22), Jalali(1326));
+    expect(false, Jalali(1326).isLeapYear());
+
+    expect(Gregorian(1948, 3, 21), Jalali(1327));
+    expect(false, Jalali(1327).isLeapYear());
+
+    expect(Gregorian(1949, 3, 21), Jalali(1328));
+    expect(false, Jalali(1328).isLeapYear());
+
+    expect(Gregorian(1950, 3, 21), Jalali(1329));
+    expect(true, Jalali(1329).isLeapYear());
+
+    expect(Gregorian(1951, 3, 22), Jalali(1330));
+    expect(false, Jalali(1330).isLeapYear());
+
+    expect(Gregorian(1952, 3, 21), Jalali(1331));
+    expect(false, Jalali(1331).isLeapYear());
+
+    expect(Gregorian(1953, 3, 21), Jalali(1332));
+    expect(false, Jalali(1332).isLeapYear());
+
+    expect(Gregorian(1954, 3, 21), Jalali(1333));
+    expect(true, Jalali(1333).isLeapYear());
+
+    expect(Gregorian(1955, 3, 22), Jalali(1334));
+    expect(false, Jalali(1334).isLeapYear());
+
+    expect(Gregorian(1956, 3, 21), Jalali(1335));
+    expect(false, Jalali(1335).isLeapYear());
+
+    expect(Gregorian(1957, 3, 21), Jalali(1336));
+    expect(false, Jalali(1336).isLeapYear());
+
+    expect(Gregorian(1958, 3, 21), Jalali(1337));
+    expect(true, Jalali(1337).isLeapYear());
+
+    expect(Gregorian(1959, 3, 22), Jalali(1338));
+    expect(false, Jalali(1338).isLeapYear());
+
+    expect(Gregorian(1960, 3, 21), Jalali(1339));
+    expect(false, Jalali(1339).isLeapYear());
+
+    expect(Gregorian(1961, 3, 21), Jalali(1340));
+    expect(false, Jalali(1340).isLeapYear());
+
+    expect(Gregorian(1962, 3, 21), Jalali(1341));
+    expect(false, Jalali(1341).isLeapYear());
+
+    expect(Gregorian(1963, 3, 21), Jalali(1342));
+    expect(true, Jalali(1342).isLeapYear());
+
+    expect(Gregorian(1964, 3, 21), Jalali(1343));
+    expect(false, Jalali(1343).isLeapYear());
+
+    expect(Gregorian(1965, 3, 21), Jalali(1344));
+    expect(false, Jalali(1344).isLeapYear());
+
+    expect(Gregorian(1966, 3, 21), Jalali(1345));
+    expect(false, Jalali(1345).isLeapYear());
+
+    expect(Gregorian(1967, 3, 21), Jalali(1346));
+    expect(true, Jalali(1346).isLeapYear());
+
+    expect(Gregorian(1968, 3, 21), Jalali(1347));
+    expect(false, Jalali(1347).isLeapYear());
+
+    expect(Gregorian(1969, 3, 21), Jalali(1348));
+    expect(false, Jalali(1348).isLeapYear());
+
+    expect(Gregorian(1970, 3, 21), Jalali(1349));
+    expect(false, Jalali(1349).isLeapYear());
+
+    expect(Gregorian(1971, 3, 21), Jalali(1350));
+    expect(true, Jalali(1350).isLeapYear());
+
+    expect(Gregorian(1972, 3, 21), Jalali(1351));
+    expect(false, Jalali(1351).isLeapYear());
+
+    expect(Gregorian(1973, 3, 21), Jalali(1352));
+    expect(false, Jalali(1352).isLeapYear());
+
+    expect(Gregorian(1974, 3, 21), Jalali(1353));
+    expect(false, Jalali(1353).isLeapYear());
+
+    expect(Gregorian(1975, 3, 21), Jalali(1354));
+    expect(true, Jalali(1354).isLeapYear());
+
+    expect(Gregorian(1976, 3, 21), Jalali(1355));
+    expect(false, Jalali(1355).isLeapYear());
+
+    expect(Gregorian(1977, 3, 21), Jalali(1356));
+    expect(false, Jalali(1356).isLeapYear());
+
+    expect(Gregorian(1978, 3, 21), Jalali(1357));
+    expect(false, Jalali(1357).isLeapYear());
+
+    expect(Gregorian(1979, 3, 21), Jalali(1358));
+    expect(true, Jalali(1358).isLeapYear());
+
+    expect(Gregorian(1980, 3, 21), Jalali(1359));
+    expect(false, Jalali(1359).isLeapYear());
+
+    expect(Gregorian(1981, 3, 21), Jalali(1360));
+    expect(false, Jalali(1360).isLeapYear());
+
+    expect(Gregorian(1982, 3, 21), Jalali(1361));
+    expect(false, Jalali(1361).isLeapYear());
+
+    expect(Gregorian(1983, 3, 21), Jalali(1362));
+    expect(true, Jalali(1362).isLeapYear());
+
+    expect(Gregorian(1984, 3, 21), Jalali(1363));
+    expect(false, Jalali(1363).isLeapYear());
+
+    expect(Gregorian(1985, 3, 21), Jalali(1364));
+    expect(false, Jalali(1364).isLeapYear());
+
+    expect(Gregorian(1986, 3, 21), Jalali(1365));
+    expect(false, Jalali(1365).isLeapYear());
+
+    expect(Gregorian(1987, 3, 21), Jalali(1366));
+    expect(true, Jalali(1366).isLeapYear());
+
+    expect(Gregorian(1988, 3, 21), Jalali(1367));
+    expect(false, Jalali(1367).isLeapYear());
+
+    expect(Gregorian(1989, 3, 21), Jalali(1368));
+    expect(false, Jalali(1368).isLeapYear());
+
+    expect(Gregorian(1990, 3, 21), Jalali(1369));
+    expect(false, Jalali(1369).isLeapYear());
+
+    expect(Gregorian(1991, 3, 21), Jalali(1370));
+    expect(true, Jalali(1370).isLeapYear());
+
+    expect(Gregorian(1992, 3, 21), Jalali(1371));
+    expect(false, Jalali(1371).isLeapYear());
+
+    expect(Gregorian(1993, 3, 21), Jalali(1372));
+    expect(false, Jalali(1372).isLeapYear());
+
+    expect(Gregorian(1994, 3, 21), Jalali(1373));
+    expect(false, Jalali(1373).isLeapYear());
+
+    expect(Gregorian(1995, 3, 21), Jalali(1374));
+    expect(false, Jalali(1374).isLeapYear());
+
+    expect(Gregorian(1996, 3, 20), Jalali(1375));
+    expect(true, Jalali(1375).isLeapYear());
+
+    expect(Gregorian(1997, 3, 21), Jalali(1376));
+    expect(false, Jalali(1376).isLeapYear());
+
+    expect(Gregorian(1998, 3, 21), Jalali(1377));
+    expect(false, Jalali(1377).isLeapYear());
+
+    expect(Gregorian(1999, 3, 21), Jalali(1378));
+    expect(false, Jalali(1378).isLeapYear());
+
+    expect(Gregorian(2000, 3, 20), Jalali(1379));
+    expect(true, Jalali(1379).isLeapYear());
+
+    expect(Gregorian(2001, 3, 21), Jalali(1380));
+    expect(false, Jalali(1380).isLeapYear());
+
+    expect(Gregorian(2002, 3, 21), Jalali(1381));
+    expect(false, Jalali(1381).isLeapYear());
+
+    expect(Gregorian(2003, 3, 21), Jalali(1382));
+    expect(false, Jalali(1382).isLeapYear());
+
+    expect(Gregorian(2004, 3, 20), Jalali(1383));
+    expect(true, Jalali(1383).isLeapYear());
+
+    expect(Gregorian(2005, 3, 21), Jalali(1384));
+    expect(false, Jalali(1384).isLeapYear());
+
+    expect(Gregorian(2006, 3, 21), Jalali(1385));
+    expect(false, Jalali(1385).isLeapYear());
+
+    expect(Gregorian(2007, 3, 21), Jalali(1386));
+    expect(false, Jalali(1386).isLeapYear());
+
+    expect(Gregorian(2008, 3, 20), Jalali(1387));
+    expect(true, Jalali(1387).isLeapYear());
+
+    expect(Gregorian(2009, 3, 21), Jalali(1388));
+    expect(false, Jalali(1388).isLeapYear());
+
+    expect(Gregorian(2010, 3, 21), Jalali(1389));
+    expect(false, Jalali(1389).isLeapYear());
+
+    expect(Gregorian(2011, 3, 21), Jalali(1390));
+    expect(false, Jalali(1390).isLeapYear());
+
+    expect(Gregorian(2012, 3, 20), Jalali(1391));
+    expect(true, Jalali(1391).isLeapYear());
+
+    expect(Gregorian(2013, 3, 21), Jalali(1392));
+    expect(false, Jalali(1392).isLeapYear());
+
+    expect(Gregorian(2014, 3, 21), Jalali(1393));
+    expect(false, Jalali(1393).isLeapYear());
+
+    expect(Gregorian(2015, 3, 21), Jalali(1394));
+    expect(false, Jalali(1394).isLeapYear());
+
+    expect(Gregorian(2016, 3, 20), Jalali(1395));
+    expect(true, Jalali(1395).isLeapYear());
+
+    expect(Gregorian(2017, 3, 21), Jalali(1396));
+    expect(false, Jalali(1396).isLeapYear());
+
+    expect(Gregorian(2018, 3, 21), Jalali(1397));
+    expect(false, Jalali(1397).isLeapYear());
+
+    expect(Gregorian(2019, 3, 21), Jalali(1398));
+    expect(false, Jalali(1398).isLeapYear());
+
+    expect(Gregorian(2020, 3, 20), Jalali(1399));
+    expect(true, Jalali(1399).isLeapYear());
+
+    expect(Gregorian(2021, 3, 21), Jalali(1400));
+    expect(false, Jalali(1400).isLeapYear());
+
+    expect(Gregorian(2022, 3, 21), Jalali(1401));
+    expect(false, Jalali(1401).isLeapYear());
+
+    expect(Gregorian(2023, 3, 21), Jalali(1402));
+    expect(false, Jalali(1402).isLeapYear());
+
+    expect(Gregorian(2024, 3, 20), Jalali(1403));
+    expect(true, Jalali(1403).isLeapYear());
+
+    expect(Gregorian(2025, 3, 21), Jalali(1404));
+    expect(false, Jalali(1404).isLeapYear());
+
+    expect(Gregorian(2026, 3, 21), Jalali(1405));
+    expect(false, Jalali(1405).isLeapYear());
+
+    expect(Gregorian(2027, 3, 21), Jalali(1406));
+    expect(false, Jalali(1406).isLeapYear());
+
+    expect(Gregorian(2028, 3, 20), Jalali(1407));
+    expect(false, Jalali(1407).isLeapYear());
+
+    expect(Gregorian(2029, 3, 20), Jalali(1408));
+    expect(true, Jalali(1408).isLeapYear());
+
+    expect(Gregorian(2030, 3, 21), Jalali(1409));
+    expect(false, Jalali(1409).isLeapYear());
+
+    expect(Gregorian(2031, 3, 21), Jalali(1410));
+    expect(false, Jalali(1410).isLeapYear());
+
+    expect(Gregorian(2032, 3, 20), Jalali(1411));
+    expect(false, Jalali(1411).isLeapYear());
+
+    expect(Gregorian(2033, 3, 20), Jalali(1412));
+    expect(true, Jalali(1412).isLeapYear());
+
+    expect(Gregorian(2034, 3, 21), Jalali(1413));
+    expect(false, Jalali(1413).isLeapYear());
+
+    expect(Gregorian(2035, 3, 21), Jalali(1414));
+    expect(false, Jalali(1414).isLeapYear());
+
+    expect(Gregorian(2036, 3, 20), Jalali(1415));
+    expect(false, Jalali(1415).isLeapYear());
+
+    expect(Gregorian(2037, 3, 20), Jalali(1416));
+    expect(true, Jalali(1416).isLeapYear());
+
+    expect(Gregorian(2038, 3, 21), Jalali(1417));
+    expect(false, Jalali(1417).isLeapYear());
+
+    expect(Gregorian(2039, 3, 21), Jalali(1418));
+    expect(false, Jalali(1418).isLeapYear());
+
+    expect(Gregorian(2040, 3, 20), Jalali(1419));
+    expect(false, Jalali(1419).isLeapYear());
+
+    expect(Gregorian(2041, 3, 20), Jalali(1420));
+    expect(true, Jalali(1420).isLeapYear());
+
+    expect(Gregorian(2042, 3, 21), Jalali(1421));
+    expect(false, Jalali(1421).isLeapYear());
+
+    expect(Gregorian(2043, 3, 21), Jalali(1422));
+    expect(false, Jalali(1422).isLeapYear());
+
+    expect(Gregorian(2044, 3, 20), Jalali(1423));
+    expect(false, Jalali(1423).isLeapYear());
+
+    expect(Gregorian(2045, 3, 20), Jalali(1424));
+    expect(true, Jalali(1424).isLeapYear());
+
+    expect(Gregorian(2046, 3, 21), Jalali(1425));
+    expect(false, Jalali(1425).isLeapYear());
+
+    expect(Gregorian(2047, 3, 21), Jalali(1426));
+    expect(false, Jalali(1426).isLeapYear());
+
+    expect(Gregorian(2048, 3, 20), Jalali(1427));
+    expect(false, Jalali(1427).isLeapYear());
+
+    expect(Gregorian(2049, 3, 20), Jalali(1428));
+    expect(true, Jalali(1428).isLeapYear());
+
+    expect(Gregorian(2050, 3, 21), Jalali(1429));
+    expect(false, Jalali(1429).isLeapYear());
+
+    expect(Gregorian(2051, 3, 21), Jalali(1430));
+    expect(false, Jalali(1430).isLeapYear());
+
+    expect(Gregorian(2052, 3, 20), Jalali(1431));
+    expect(false, Jalali(1431).isLeapYear());
+
+    expect(Gregorian(2053, 3, 20), Jalali(1432));
+    expect(true, Jalali(1432).isLeapYear());
+
+    expect(Gregorian(2054, 3, 21), Jalali(1433));
+    expect(false, Jalali(1433).isLeapYear());
+
+    expect(Gregorian(2055, 3, 21), Jalali(1434));
+    expect(false, Jalali(1434).isLeapYear());
+
+    expect(Gregorian(2056, 3, 20), Jalali(1435));
+    expect(false, Jalali(1435).isLeapYear());
+
+    expect(Gregorian(2057, 3, 20), Jalali(1436));
+    expect(true, Jalali(1436).isLeapYear());
+
+    expect(Gregorian(2058, 3, 21), Jalali(1437));
+    expect(false, Jalali(1437).isLeapYear());
+
+    expect(Gregorian(2059, 3, 21), Jalali(1438));
+    expect(false, Jalali(1438).isLeapYear());
+
+    expect(Gregorian(2060, 3, 20), Jalali(1439));
+    expect(false, Jalali(1439).isLeapYear());
+
+    expect(Gregorian(2061, 3, 20), Jalali(1440));
+    expect(false, Jalali(1440).isLeapYear());
+
+    expect(Gregorian(2062, 3, 20), Jalali(1441));
+    expect(true, Jalali(1441).isLeapYear());
+
+    expect(Gregorian(2063, 3, 21), Jalali(1442));
+    expect(false, Jalali(1442).isLeapYear());
+
+    expect(Gregorian(2064, 3, 20), Jalali(1443));
+    expect(false, Jalali(1443).isLeapYear());
+
+    expect(Gregorian(2065, 3, 20), Jalali(1444));
+    expect(false, Jalali(1444).isLeapYear());
+
+    expect(Gregorian(2066, 3, 20), Jalali(1445));
+    expect(true, Jalali(1445).isLeapYear());
+
+    expect(Gregorian(2067, 3, 21), Jalali(1446));
+    expect(false, Jalali(1446).isLeapYear());
+
+    expect(Gregorian(2068, 3, 20), Jalali(1447));
+    expect(false, Jalali(1447).isLeapYear());
+
+    expect(Gregorian(2069, 3, 20), Jalali(1448));
+    expect(false, Jalali(1448).isLeapYear());
+
+    expect(Gregorian(2070, 3, 20), Jalali(1449));
+    expect(true, Jalali(1449).isLeapYear());
+
+    expect(Gregorian(2071, 3, 21), Jalali(1450));
+    expect(false, Jalali(1450).isLeapYear());
+
+    expect(Gregorian(2072, 3, 20), Jalali(1451));
+    expect(false, Jalali(1451).isLeapYear());
+
+    expect(Gregorian(2073, 3, 20), Jalali(1452));
+    expect(false, Jalali(1452).isLeapYear());
+
+    expect(Gregorian(2074, 3, 20), Jalali(1453));
+    expect(true, Jalali(1453).isLeapYear());
+
+    expect(Gregorian(2075, 3, 21), Jalali(1454));
+    expect(false, Jalali(1454).isLeapYear());
+
+    expect(Gregorian(2076, 3, 20), Jalali(1455));
+    expect(false, Jalali(1455).isLeapYear());
+
+    expect(Gregorian(2077, 3, 20), Jalali(1456));
+    expect(false, Jalali(1456).isLeapYear());
+
+    expect(Gregorian(2078, 3, 20), Jalali(1457));
+    expect(true, Jalali(1457).isLeapYear());
+
+    expect(Gregorian(2079, 3, 21), Jalali(1458));
+    expect(false, Jalali(1458).isLeapYear());
+
+    expect(Gregorian(2080, 3, 20), Jalali(1459));
+    expect(false, Jalali(1459).isLeapYear());
+
+    expect(Gregorian(2081, 3, 20), Jalali(1460));
+    expect(false, Jalali(1460).isLeapYear());
+
+    expect(Gregorian(2082, 3, 20), Jalali(1461));
+    expect(true, Jalali(1461).isLeapYear());
+
+    expect(Gregorian(2083, 3, 21), Jalali(1462));
+    expect(false, Jalali(1462).isLeapYear());
+
+    expect(Gregorian(2084, 3, 20), Jalali(1463));
+    expect(false, Jalali(1463).isLeapYear());
+
+    expect(Gregorian(2085, 3, 20), Jalali(1464));
+    expect(false, Jalali(1464).isLeapYear());
+
+    expect(Gregorian(2086, 3, 20), Jalali(1465));
+    expect(true, Jalali(1465).isLeapYear());
+
+    expect(Gregorian(2087, 3, 21), Jalali(1466));
+    expect(false, Jalali(1466).isLeapYear());
+
+    expect(Gregorian(2088, 3, 20), Jalali(1467));
+    expect(false, Jalali(1467).isLeapYear());
+
+    expect(Gregorian(2089, 3, 20), Jalali(1468));
+    expect(false, Jalali(1468).isLeapYear());
+
+    expect(Gregorian(2090, 3, 20), Jalali(1469));
+    expect(true, Jalali(1469).isLeapYear());
+
+    expect(Gregorian(2091, 3, 21), Jalali(1470));
+    expect(false, Jalali(1470).isLeapYear());
+
+    expect(Gregorian(2092, 3, 20), Jalali(1471));
+    expect(false, Jalali(1471).isLeapYear());
+
+    expect(Gregorian(2093, 3, 20), Jalali(1472));
+    expect(false, Jalali(1472).isLeapYear());
+
+    expect(Gregorian(2094, 3, 20), Jalali(1473));
+    expect(false, Jalali(1473).isLeapYear());
+
+    expect(Gregorian(2095, 3, 20), Jalali(1474));
+    expect(true, Jalali(1474).isLeapYear());
+
+    expect(Gregorian(2096, 3, 20), Jalali(1475));
+    expect(false, Jalali(1475).isLeapYear());
+
+    expect(Gregorian(2097, 3, 20), Jalali(1476));
+    expect(false, Jalali(1476).isLeapYear());
+
+    expect(Gregorian(2098, 3, 20), Jalali(1477));
+    expect(false, Jalali(1477).isLeapYear());
+
+    expect(Gregorian(2099, 3, 20), Jalali(1478));
+    expect(true, Jalali(1478).isLeapYear());
+
+    expect(Gregorian(2100, 3, 21), Jalali(1479));
+    expect(false, Jalali(1479).isLeapYear());
+
+    expect(Gregorian(2101, 3, 21), Jalali(1480));
+    expect(false, Jalali(1480).isLeapYear());
+
+    expect(Gregorian(2102, 3, 21), Jalali(1481));
+    expect(false, Jalali(1481).isLeapYear());
+
+    expect(Gregorian(2103, 3, 21), Jalali(1482));
+    expect(true, Jalali(1482).isLeapYear());
+
+    expect(Gregorian(2104, 3, 21), Jalali(1483));
+    expect(false, Jalali(1483).isLeapYear());
+
+    expect(Gregorian(2105, 3, 21), Jalali(1484));
+    expect(false, Jalali(1484).isLeapYear());
+
+    expect(Gregorian(2106, 3, 21), Jalali(1485));
+    expect(false, Jalali(1485).isLeapYear());
+
+    expect(Gregorian(2107, 3, 21), Jalali(1486));
+    expect(true, Jalali(1486).isLeapYear());
+
+    expect(Gregorian(2108, 3, 21), Jalali(1487));
+    expect(false, Jalali(1487).isLeapYear());
+
+    expect(Gregorian(2109, 3, 21), Jalali(1488));
+    expect(false, Jalali(1488).isLeapYear());
+
+    expect(Gregorian(2110, 3, 21), Jalali(1489));
+    expect(false, Jalali(1489).isLeapYear());
+
+    expect(Gregorian(2111, 3, 21), Jalali(1490));
+    expect(true, Jalali(1490).isLeapYear());
+
+    expect(Gregorian(2112, 3, 21), Jalali(1491));
+    expect(false, Jalali(1491).isLeapYear());
+
+    expect(Gregorian(2113, 3, 21), Jalali(1492));
+    expect(false, Jalali(1492).isLeapYear());
+
+    expect(Gregorian(2114, 3, 21), Jalali(1493));
+    expect(false, Jalali(1493).isLeapYear());
+
+    expect(Gregorian(2115, 3, 21), Jalali(1494));
+    expect(true, Jalali(1494).isLeapYear());
+
+    expect(Gregorian(2116, 3, 21), Jalali(1495));
+    expect(false, Jalali(1495).isLeapYear());
+
+    expect(Gregorian(2117, 3, 21), Jalali(1496));
+    expect(false, Jalali(1496).isLeapYear());
+
+    expect(Gregorian(2118, 3, 21), Jalali(1497));
+    expect(false, Jalali(1497).isLeapYear());
+
+    expect(Gregorian(2119, 3, 21), Jalali(1498));
+    expect(true, Jalali(1498).isLeapYear());
+  });
 }
 
 /// Mock Gregorian