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
84 lines
2.9 KiB
Go
84 lines
2.9 KiB
Go
package basic
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import (
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"encoding/json"
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"os"
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"testing"
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"time"
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)
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type planetApparentSample struct {
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Body string `json:"body"`
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InputUTC string `json:"input_utc"`
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RightAscension float64 `json:"right_ascension"`
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Declination float64 `json:"declination"`
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EclipticLongitude float64 `json:"ecliptic_longitude"`
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EclipticLatitude float64 `json:"ecliptic_latitude"`
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}
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func TestPlanetApparentCoordinatesMatchHorizonsBaseline(t *testing.T) {
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data, err := os.ReadFile("testdata/planet_apparent_baseline.json")
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if err != nil {
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t.Fatalf("read baseline: %v", err)
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}
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var samples []planetApparentSample
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if err := json.Unmarshal(data, &samples); err != nil {
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t.Fatalf("decode baseline: %v", err)
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}
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type apparentCase struct {
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lo func(float64) float64
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bo func(float64) float64
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ra func(float64) float64
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dec func(float64) float64
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}
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cases := map[string]apparentCase{
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"mercury": {lo: MercuryApparentLo, bo: MercuryApparentBo, ra: MercuryApparentRa, dec: MercuryApparentDec},
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"venus": {lo: VenusApparentLo, bo: VenusApparentBo, ra: VenusApparentRa, dec: VenusApparentDec},
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"mars": {lo: MarsApparentLo, bo: MarsApparentBo, ra: MarsApparentRa, dec: MarsApparentDec},
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"jupiter": {lo: JupiterApparentLo, bo: JupiterApparentBo, ra: JupiterApparentRa, dec: JupiterApparentDec},
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"saturn": {lo: SaturnApparentLo, bo: SaturnApparentBo, ra: SaturnApparentRa, dec: SaturnApparentDec},
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"uranus": {lo: UranusApparentLo, bo: UranusApparentBo, ra: UranusApparentRa, dec: UranusApparentDec},
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"neptune": {lo: NeptuneApparentLo, bo: NeptuneApparentBo, ra: NeptuneApparentRa, dec: NeptuneApparentDec},
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}
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seen := make(map[string]bool, len(cases))
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for _, sample := range samples {
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tc, ok := cases[sample.Body]
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if !ok {
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t.Fatalf("unknown body %q", sample.Body)
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}
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if seen[sample.Body] {
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t.Fatalf("duplicate body %q in apparent baseline", sample.Body)
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}
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seen[sample.Body] = true
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date, err := time.Parse(time.RFC3339, sample.InputUTC)
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if err != nil {
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t.Fatalf("parse sample time %q: %v", sample.InputUTC, err)
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}
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jd := UTC2TT(Date2JD(date.UTC()))
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prefix := sample.Body + "." + sample.InputUTC
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assertPlanetApparentAngleClose(t, prefix+".RightAscension", tc.ra(jd), sample.RightAscension, 0.001)
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assertPlanetPhaseClose(t, prefix+".Declination", tc.dec(jd), sample.Declination, 0.001)
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assertPlanetApparentAngleClose(t, prefix+".EclipticLongitude", tc.lo(jd), sample.EclipticLongitude, 0.001)
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assertPlanetPhaseClose(t, prefix+".EclipticLatitude", tc.bo(jd), sample.EclipticLatitude, 0.001)
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}
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for body := range cases {
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if !seen[body] {
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t.Fatalf("missing body %q in apparent baseline", body)
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}
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}
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}
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func assertPlanetApparentAngleClose(t *testing.T, name string, got, want, tolerance float64) {
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t.Helper()
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if diff := angleDiffAbs(got, want); diff > tolerance {
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t.Fatalf("%s mismatch: got %.12f want %.12f diff %.12f tolerance %.12f", name, got, want, diff, tolerance)
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}
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}
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