equinox_day_test.go

package flagday_test

import (
	"testing"

	"github.com/pinzolo/flagday"
)

type equinoxDay struct {
	year int
	day  int
}

// see:
// 1949-1999: http://www.asahi-net.or.jp/~CI5M-NMR/misc/equinox.html#Current
// 2000-2030: https://www.nao.ac.jp/faq/a0301.html
// 2031-2099: calculation by self (for refactoring)
var springEquinoxDays = []equinoxDay{
	{1949, 21},
	{1950, 21},
	{1951, 21},
	{1952, 21},
	{1953, 21},
	{1954, 21},
	{1955, 21},
	{1956, 21},
	{1957, 21},
	{1958, 21},
	{1959, 21},
	{1960, 20},
	{1961, 21},
	{1962, 21},
	{1963, 21},
	{1964, 20},
	{1965, 21},
	{1966, 21},
	{1967, 21},
	{1968, 20},
	{1969, 21},
	{1970, 21},
	{1971, 21},
	{1972, 20},
	{1973, 21},
	{1974, 21},
	{1975, 21},
	{1976, 20},
	{1977, 21},
	{1978, 21},
	{1979, 21},
	{1980, 20},
	{1981, 21},
	{1982, 21},
	{1983, 21},
	{1984, 20},
	{1985, 21},
	{1986, 21},
	{1987, 21},
	{1988, 20},
	{1989, 21},
	{1990, 21},
	{1991, 21},
	{1992, 20},
	{1993, 20},
	{1994, 21},
	{1995, 21},
	{1996, 20},
	{1997, 20},
	{1998, 21},
	{1999, 21},
	{2000, 20},
	{2001, 20},
	{2002, 21},
	{2003, 21},
	{2004, 20},
	{2005, 20},
	{2006, 21},
	{2007, 21},
	{2008, 20},
	{2009, 20},
	{2010, 21},
	{2011, 21},
	{2012, 20},
	{2013, 20},
	{2014, 21},
	{2015, 21},
	{2016, 20},
	{2017, 20},
	{2018, 21},
	{2019, 21},
	{2020, 20},
	{2021, 20},
	{2022, 21},
	{2023, 21},
	{2024, 20},
	{2025, 20},
	{2026, 20},
	{2027, 21},
	{2028, 20},
	{2029, 20},
	{2030, 20},
	{2031, 21},
	{2032, 20},
	{2033, 20},
	{2034, 20},
	{2035, 21},
	{2036, 20},
	{2037, 20},
	{2038, 20},
	{2039, 21},
	{2040, 20},
	{2041, 20},
	{2042, 20},
	{2043, 21},
	{2044, 20},
	{2045, 20},
	{2046, 20},
	{2047, 21},
	{2048, 20},
	{2049, 20},
	{2050, 20},
	{2051, 21},
	{2052, 20},
	{2053, 20},
	{2054, 20},
	{2055, 21},
	{2056, 20},
	{2057, 20},
	{2058, 20},
	{2059, 20},
	{2060, 20},
	{2061, 20},
	{2062, 20},
	{2063, 20},
	{2064, 20},
	{2065, 20},
	{2066, 20},
	{2067, 20},
	{2068, 20},
	{2069, 20},
	{2070, 20},
	{2071, 20},
	{2072, 20},
	{2073, 20},
	{2074, 20},
	{2075, 20},
	{2076, 20},
	{2077, 20},
	{2078, 20},
	{2079, 20},
	{2080, 20},
	{2081, 20},
	{2082, 20},
	{2083, 20},
	{2084, 20},
	{2085, 20},
	{2086, 20},
	{2087, 20},
	{2088, 20},
	{2089, 20},
	{2090, 20},
	{2091, 20},
	{2092, 19},
	{2093, 20},
	{2094, 20},
	{2095, 20},
	{2096, 19},
	{2097, 20},
	{2098, 20},
	{2099, 20},
}
var autumnEquinoxDays = []equinoxDay{
	{1948, 23},
	{1949, 23},
	{1950, 23},
	{1951, 24},
	{1952, 23},
	{1953, 23},
	{1954, 23},
	{1955, 24},
	{1956, 23},
	{1957, 23},
	{1958, 23},
	{1959, 24},
	{1960, 23},
	{1961, 23},
	{1962, 23},
	{1963, 24},
	{1964, 23},
	{1965, 23},
	{1966, 23},
	{1967, 24},
	{1968, 23},
	{1969, 23},
	{1970, 23},
	{1971, 24},
	{1972, 23},
	{1973, 23},
	{1974, 23},
	{1975, 24},
	{1976, 23},
	{1977, 23},
	{1978, 23},
	{1979, 24},
	{1980, 23},
	{1981, 23},
	{1982, 23},
	{1983, 23},
	{1984, 23},
	{1985, 23},
	{1986, 23},
	{1987, 23},
	{1988, 23},
	{1989, 23},
	{1990, 23},
	{1991, 23},
	{1992, 23},
	{1993, 23},
	{1994, 23},
	{1995, 23},
	{1996, 23},
	{1997, 23},
	{1998, 23},
	{1999, 23},
	{2000, 23},
	{2001, 23},
	{2002, 23},
	{2003, 23},
	{2004, 23},
	{2005, 23},
	{2006, 23},
	{2007, 23},
	{2008, 23},
	{2009, 23},
	{2010, 23},
	{2011, 23},
	{2012, 22},
	{2013, 23},
	{2014, 23},
	{2015, 23},
	{2016, 22},
	{2017, 23},
	{2018, 23},
	{2019, 23},
	{2020, 22},
	{2021, 23},
	{2022, 23},
	{2023, 23},
	{2024, 22},
	{2025, 23},
	{2026, 23},
	{2027, 23},
	{2028, 22},
	{2029, 23},
	{2030, 23},
	{2031, 23},
	{2032, 22},
	{2033, 23},
	{2034, 23},
	{2035, 23},
	{2036, 22},
	{2037, 23},
	{2038, 23},
	{2039, 23},
	{2040, 22},
	{2041, 23},
	{2042, 23},
	{2043, 23},
	{2044, 22},
	{2045, 22},
	{2046, 23},
	{2047, 23},
	{2048, 22},
	{2049, 22},
	{2050, 23},
	{2051, 23},
	{2052, 22},
	{2053, 22},
	{2054, 23},
	{2055, 23},
	{2056, 22},
	{2057, 22},
	{2058, 23},
	{2059, 23},
	{2060, 22},
	{2061, 22},
	{2062, 23},
	{2063, 23},
	{2064, 22},
	{2065, 22},
	{2066, 23},
	{2067, 23},
	{2068, 22},
	{2069, 22},
	{2070, 23},
	{2071, 23},
	{2072, 22},
	{2073, 22},
	{2074, 23},
	{2075, 23},
	{2076, 22},
	{2077, 22},
	{2078, 22},
	{2079, 23},
	{2080, 22},
	{2081, 22},
	{2082, 22},
	{2083, 23},
	{2084, 22},
	{2085, 22},
	{2086, 22},
	{2087, 23},
	{2088, 22},
	{2089, 22},
	{2090, 22},
	{2091, 23},
	{2092, 22},
	{2093, 22},
	{2094, 22},
	{2095, 23},
	{2096, 22},
	{2097, 22},
	{2098, 22},
	{2099, 23},
}

func TestSpringEquinoxDay(t *testing.T) {
	for _, ed := range springEquinoxDays {
		d, err := flagday.PublicHolidayOf(ed.year, 3, ed.day)
		if err != nil {
			t.Errorf("spring equinox day in %d expects %d, but got %d", ed.year, ed.day, d.Day())
		}
	}
}

func TestAutumnEquinoxDay(t *testing.T) {
	for _, ed := range autumnEquinoxDays {
		d, err := flagday.PublicHolidayOf(ed.year, 9, ed.day)
		if err != nil {
			t.Errorf("autumn equinox day in %d expects %d, but got %d", ed.year, ed.day, d.Day())
		}
	}
}