Files
astro/eclipse/provenance_test.go
T
b612 16c62a97d5 feat: 完善时标与天象几何计算并扩展输出接口
- 新增时标、ΔT 模型、质心时间与 UT1 支持
- 改进日月食、月掩、行星事件及路径边界计算
- 完善恒星三维自行与动态距离传播
- 扩展 SVG、GeoJSON、KML 输出与底层距离换算工具
- 整理中英文手册、示例资源及回归测试
2026-09-23 18:55:12 +08:00

48 lines
2.0 KiB
Go
Raw Permalink Blame History

This file contains ambiguous Unicode characters
This file contains Unicode characters that might be confused with other characters. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.
package eclipse
import (
"math"
"testing"
"time"
"b612.me/astro/basic"
)
// 三个 info 都带 provenance:GreatestJDE(力学时)经 TT2UTC 复现民用时刻字段;
// DeltaTSeconds 是 TT−UT1,不能用来做这次换算(会差一个 DUT1)。
func TestEclipseInfoCarriesProvenance(t *testing.T) {
date := time.Date(2024, time.April, 8, 12, 0, 0, 0, time.UTC)
solar, ok := SolarEclipseOnDate(date)
if !ok {
t.Fatal("缺少 2024-04-08 日食")
}
if solar.GreatestJDE == 0 || solar.DeltaTSeconds == 0 {
t.Fatalf("日食 provenance 未填充: JDE=%v ΔT=%v", solar.GreatestJDE, solar.DeltaTSeconds)
}
if got := solarEclipseTTJDEToTime(solar.GreatestJDE, solar.GreatestEclipse.Location()); !got.Equal(solar.GreatestEclipse) {
t.Errorf("GreatestJDE 未经 TT2UTC 复现食甚时刻: %v vs %v", got, solar.GreatestEclipse)
}
// DUT1 非零时,用 ΔT 换算出来的 UT1 时刻必须与民用时刻不同:两者的差就是 DUT1。
ut1 := basic.JD2DateByZone(solar.GreatestJDE-solar.DeltaTSeconds/86400, solar.GreatestEclipse.Location(), false)
dut1 := (basic.TT2UTC(solar.GreatestJDE)-solar.GreatestJDE)*86400 - solar.DeltaTSeconds
if math.Abs(dut1) > 1e-3 && ut1.Equal(solar.GreatestEclipse) {
t.Errorf("民用时刻字段走了 ΔT(TT−UT1)换算: %v vs %v", ut1, solar.GreatestEclipse)
}
local := ClosestLocalSolarEclipse(date, -96.8, 32.8, 0)
if local.GreatestJDE == 0 || local.DeltaTSeconds == 0 {
t.Fatalf("站心日食 provenance 未填充: JDE=%v ΔT=%v", local.GreatestJDE, local.DeltaTSeconds)
}
if got := solarEclipseTTJDEToTime(local.GreatestJDE, local.GreatestEclipse.Location()); !got.Equal(local.GreatestEclipse) {
t.Errorf("GreatestJDE+ΔT 未复现站心食甚: %v vs %v", got, local.GreatestEclipse)
}
lunar, ok := LunarEclipseOnDate(time.Date(2025, time.September, 7, 12, 0, 0, 0, time.UTC))
if !ok {
t.Fatal("缺少 2025-09-07 月食")
}
if lunar.GreatestJDE == 0 || lunar.DeltaTSeconds == 0 {
t.Fatalf("月食 provenance 未填充: JDE=%v ΔT=%v", lunar.GreatestJDE, lunar.DeltaTSeconds)
}
}