starainrt
3ffdbe0034
- 新增日食、月食、本地可见性、中心线、半影区域、SVG 图示与沙罗周期信息 - 新增行星冲合、留、方照、物理星历、视直径、相位、亮肢角、轨道节点等计算 - 新增木星伽利略卫星位置、现象与接触事件计算 - 新增恒星星表、星座判定、自行修正与观测辅助能力 - 新增 coord、formula、orbit、sundial、lite/sun、lite/moon 等扩展包 - 完善农历年号、月相英文别名、视差角、大气质量、折射、日晷与双星计算 - 增加 NASA、JPL Horizons、IMCCE 等回归测试数据与基线测试 - 重构基础算法文件组织，补充大量公开 API 注释和语义回归测试 - 更新中文和英文 README，补充示例、精度说明、SVG 配图
82 lines
2.6 KiB
Go
82 lines
2.6 KiB
Go
package sun
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import (
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"math"
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"testing"
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"time"
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fullsun "b612.me/astro/sun"
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)
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func TestLiteSunPositionAgainstFullPrecision(t *testing.T) {
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samples := []time.Time{
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time.Date(2026, 1, 5, 12, 0, 0, 0, time.UTC),
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time.Date(2026, 3, 20, 6, 0, 0, 0, time.UTC),
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time.Date(2026, 6, 21, 0, 0, 0, 0, time.UTC),
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time.Date(2026, 9, 22, 18, 0, 0, 0, time.UTC),
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time.Date(2026, 12, 21, 12, 0, 0, 0, time.UTC),
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}
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for _, sample := range samples {
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if got, want := ApparentLo(sample), fullsun.ApparentLo(sample); math.Abs(angleDiff(got, want)) > 0.02 {
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t.Fatalf("ApparentLo(%s) = %.6f, want %.6f", sample.Format(time.RFC3339), got, want)
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}
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gotRA, gotDec := ApparentRaDec(sample)
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wantRA, wantDec := fullsun.ApparentRaDec(sample)
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if math.Abs(angleDiff(gotRA, wantRA)) > 0.03 {
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t.Fatalf("ApparentRa(%s) = %.6f, want %.6f", sample.Format(time.RFC3339), gotRA, wantRA)
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}
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if math.Abs(gotDec-wantDec) > 0.03 {
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t.Fatalf("ApparentDec(%s) = %.6f, want %.6f", sample.Format(time.RFC3339), gotDec, wantDec)
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}
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}
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}
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func TestLiteSunRiseSetAgainstFullPrecision(t *testing.T) {
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cases := []struct {
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name string
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date time.Time
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lon float64
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lat float64
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}{
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{"Shanghai", time.Date(2026, 1, 1, 0, 0, 0, 0, time.FixedZone("CST", 8*3600)), 121.4737, 31.2304},
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{"London", time.Date(2026, 3, 20, 0, 0, 0, 0, time.UTC), -0.1278, 51.5074},
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{"NewYork", time.Date(2026, 6, 21, 0, 0, 0, 0, time.FixedZone("EST", -5*3600)), -74.0060, 40.7128},
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{"Sydney", time.Date(2026, 9, 23, 0, 0, 0, 0, time.FixedZone("AEST", 10*3600)), 151.2093, -33.8688},
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}
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for _, tc := range cases {
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gotRise, gotErr := RiseTime(tc.date, tc.lon, tc.lat, 0, true)
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wantRise, wantErr := fullsun.RiseTime(tc.date, tc.lon, tc.lat, 0, true)
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if gotErr != nil || wantErr != nil {
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t.Fatalf("%s rise unexpected error: got=%v want=%v", tc.name, gotErr, wantErr)
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}
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assertTimeWithinMinutes(t, tc.name+" rise", gotRise, wantRise, 2.0)
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gotSet, gotSetErr := SetTime(tc.date, tc.lon, tc.lat, 0, true)
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wantSet, wantSetErr := fullsun.SetTime(tc.date, tc.lon, tc.lat, 0, true)
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if gotSetErr != nil || wantSetErr != nil {
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t.Fatalf("%s set unexpected error: got=%v want=%v", tc.name, gotSetErr, wantSetErr)
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}
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assertTimeWithinMinutes(t, tc.name+" set", gotSet, wantSet, 2.0)
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}
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}
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func angleDiff(a, b float64) float64 {
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diff := math.Mod(a-b, 360)
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if diff > 180 {
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diff -= 360
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}
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if diff < -180 {
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diff += 360
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}
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return diff
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}
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func assertTimeWithinMinutes(t *testing.T, name string, got, want time.Time, limitMinutes float64) {
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t.Helper()
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if math.Abs(got.Sub(want).Minutes()) > limitMinutes {
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t.Fatalf("%s = %s, want %s", name, got, want)
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}
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}
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