100 lines
3.4 KiB
Go
100 lines
3.4 KiB
Go
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package calendar
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import (
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"testing"
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"time"
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)
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// 辽/金/元历修正表曾漏掉 9 个年份，其中缺 1093 会让辽历 1094-01-19 走进第 13 个月并越界 panic。
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func TestLiaoJinYuanCorrectionTableIsComplete(t *testing.T) {
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want := map[int]uint32{
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993: 1767184896,
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1000: 2774542080,
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1074: 3040878080,
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1093: 1531977216,
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1102: 1523258624,
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1103: 1456482304,
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1175: 633116928,
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1208: 3047822080,
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1252: 3600820736,
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}
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table := liaoJinYuanCals()
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for year, magic := range want {
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got, ok := table[year]
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if !ok {
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t.Fatalf("liaoJinYuanCals() 缺少 %d 年（源表 y%d 有修正）", year, year)
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}
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if got != magic {
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t.Fatalf("liaoJinYuanCals()[%d] = %d, want %d", year, got, magic)
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}
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}
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if len(table) != 72 {
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t.Fatalf("liaoJinYuanCals() 行数 = %d, want 72（与补全后的表行数一致）", len(table))
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}
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}
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// 缺行年份的岁末/年初边界：既要不再 panic，也要给出源表推出的那一天。
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// Year boundaries of the years that used to be missing: they must not panic and must report
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// the day the source table implies.
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func TestSolarToLunarNorthernCalendarYearBoundaries(t *testing.T) {
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cases := []struct {
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year, month, day int
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want string
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}{
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{1094, 1, 19, "辽 大安九年腊月三十"}, // 缺 1093 行：旧实现 panic（index out of range [13]）
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{1176, 2, 12, "金 大定十五年腊月三十"}, // 缺 1175 行：旧实现回退"无法获取农历信息"
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{1209, 2, 6, "金 泰和八年腊月三十"}, // 缺 1208 行：同上
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{1252, 2, 11, "元 元宪宗二年正月初一"}, // 缺 1252 行：同上
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}
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for _, tc := range cases {
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date := time.Date(tc.year, time.Month(tc.month), tc.day, 0, 0, 0, 0, getCst())
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got, err := SolarToLunar(date)
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if err != nil {
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t.Fatalf("SolarToLunar(%s) err=%v", date.Format("2006-01-02"), err)
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}
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if !containsLine(got.LunarDescWithDynasty(), tc.want) {
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t.Fatalf("SolarToLunar(%s) = %v, want a line %q",
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date.Format("2006-01-02"), got.LunarDescWithDynasty(), tc.want)
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}
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}
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}
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// 缺行年份还会让整月错位 30 天（旧表把闰月当普通月）。这里钉住错位段的头一天。
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// Missing rows also shifted a whole month by 30 days (the old table treated a leap month as
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// an ordinary one). Pin the first day of each shifted stretch.
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func TestSolarToLunarNorthernCalendarMonthAlignment(t *testing.T) {
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cases := []struct {
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year, month, day int
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want string
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}{
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{1102, 11, 11, "辽 乾统二年九月廿九"},
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{1102, 11, 12, "辽 乾统二年九月三十"}, // 旧表：十月初一
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{1102, 11, 13, "辽 乾统二年十月初一"},
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{1103, 9, 2, "辽 乾统三年七月廿九"},
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{1103, 9, 3, "辽 乾统三年七月三十"}, // 旧表：八月初一
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{1103, 9, 4, "辽 乾统三年八月初一"},
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{1252, 2, 10, "元 元宪宗元年腊月廿九"},
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{1252, 2, 11, "元 元宪宗二年正月初一"}, // 旧表：回退串
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}
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for _, tc := range cases {
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date := time.Date(tc.year, time.Month(tc.month), tc.day, 0, 0, 0, 0, getCst())
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got, err := SolarToLunar(date)
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if err != nil {
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t.Fatalf("SolarToLunar(%s) err=%v", date.Format("2006-01-02"), err)
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}
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if !containsLine(got.LunarDescWithDynasty(), tc.want) {
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t.Fatalf("SolarToLunar(%s) = %v, want a line %q",
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date.Format("2006-01-02"), got.LunarDescWithDynasty(), tc.want)
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}
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}
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}
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func containsLine(lines []string, want string) bool {
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for _, line := range lines {
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if line == want {
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return true
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}
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}
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return false
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}
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