b612
16c62a97d5
- 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
74 lines
1.8 KiB
Go
74 lines
1.8 KiB
Go
package basic
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import (
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. "b612.me/astro/tools"
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"math"
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"testing"
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)
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func Test_ParseStar(t *testing.T) {
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if err := LoadStarData(); err != nil {
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t.Fatal(err)
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}
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for _, v := range stardat {
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if _, err := parseStarData(v); err != nil {
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t.Fatal(err)
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}
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}
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}
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func TestGetStarByChniese(t *testing.T) {
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if err := LoadStarData(); err != nil {
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t.Fatal(err)
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}
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sirius, err := StarDataByChinese("天狼星")
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if err != nil {
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t.Fatal(err)
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}
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if sirius.HIP != 32349 || sirius.HR != 2491 {
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t.Fatal("cannot found star")
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}
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sirius, err = StarDataByChinese("天狼")
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if err != nil {
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t.Fatal(err)
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}
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if sirius.HIP != 32349 || sirius.HR != 2491 {
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t.Fatal("cannot found star")
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}
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}
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func TestGetRaDecByDate(t *testing.T) {
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if err := LoadStarData(); err != nil {
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t.Fatal(err)
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}
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sirius, err := StarDataByHR(2491)
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if err != nil {
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t.Fatal(err)
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}
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ra, dec := sirius.RaDecByJde(2451545.0)
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if math.IsNaN(ra) || math.IsInf(ra, 0) || ra < 0 || ra >= 360 {
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t.Fatalf("invalid ra: %.12f", ra)
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}
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if math.IsNaN(dec) || math.IsInf(dec, 0) || dec < -90 || dec > 90 {
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t.Fatalf("invalid dec: %.12f", dec)
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}
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if Format(sirius.Ra/15, 1) == "" || Format(sirius.Dec, 0) == "" {
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t.Fatal("unexpected empty formatted catalog coordinates")
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}
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}
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func TestRaDecByJdeUsesProjectedRightAscensionMotion(t *testing.T) {
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star := InnerStarData{Ra: 10, Dec: 60, PmRA: 3600, PmDec: 0}
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jde := 2451545.0 + 365.25
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ra, dec := star.RaDecByJde(jde)
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// 投影坐标每年 1 度在 Dec=60 度时对应赤经每年 2 度 / 1 deg/year in the projected coordinate is 2 deg/year in RA at Dec=60.
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wantRA, wantDec := Precess(12, 60, 2451545.0, jde)
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if math.Abs(signedAngleDifference(ra, wantRA)) > 1e-8 || math.Abs(dec-wantDec) > 1e-8 {
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t.Fatalf("position = %.12f %.12f, want %.12f %.12f", ra, dec, wantRA, wantDec)
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}
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}
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