66 lines
2.3 KiB
Go
66 lines
2.3 KiB
Go
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package basic
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import (
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"testing"
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"time"
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)
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func TestPlanetOccultationContactPhaseJunctionsClose(t *testing.T) {
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for _, sample := range []struct {
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year, month, day int
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planet OccultationPlanet
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}{
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{2027, 4, 15, OccultationJupiter},
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{2027, 1, 8, OccultationMercury},
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// 2025-01-05 月掩海王星在环极折点处残差与零相切，符号扫描漏根会让
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// 「终掩在月升/月落」分支断开，这里固定该回归。
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// The 2025-01-05 Neptune occultation tangents the zero residual at its
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// polar fold; a sign-only scan drops that root and breaks the end phase
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// branches apart, so pin the regression here.
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{2025, 1, 5, OccultationNeptune},
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} {
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t.Run(string(sample.planet), func(t *testing.T) {
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day := time.Date(sample.year, time.Month(sample.month), sample.day, 0, 0, 0, 0, time.UTC)
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paths, err := FindPlanetOccultationPaths(day.Add(-12*time.Hour), day.Add(36*time.Hour), sample.planet,
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OccultationPathOptions{Step: 20 * time.Minute, TargetSpacingKM: 900, DisableFootprints: true, RiseSetStep: time.Minute})
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if err != nil || len(paths) != 1 {
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t.Fatalf("paths=%d err=%v", len(paths), err)
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}
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for _, curves := range [][]OccultationRiseSetCurve{paths[0].RiseSetCurves, paths[0].TotalRiseSetCurves} {
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for ci, curve := range curves {
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if curve.Phase == RiseSetPhaseGreatest {
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continue
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}
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for si, segment := range curve.Segments {
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if len(segment) < 2 {
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continue
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}
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for _, endpoint := range []OccultationPathPoint{segment[0], segment[len(segment)-1]} {
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shared := false
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for oi, other := range curves {
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if other.Phase == RiseSetPhaseGreatest {
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continue
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}
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for os, points := range other.Segments {
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if ci == oi && si == os || len(points) < 2 {
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continue
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}
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for _, point := range []OccultationPathPoint{points[0], points[len(points)-1]} {
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dt := point.Time.Sub(endpoint.Time)
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if dt >= -time.Second && dt <= time.Second && occultationPathDistanceKM(endpoint, point) < 0.01 {
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shared = true
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}
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}
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}
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}
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if !shared {
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t.Errorf("unclosed %s/%s endpoint lon=%.9f lat=%.9f at=%s", curve.Phase, curve.Direction, endpoint.Longitude, endpoint.Latitude, endpoint.Time)
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}
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}
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}
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}
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}
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})
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}
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}
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