62 lines
2.5 KiB
Go
62 lines
2.5 KiB
Go
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package basic
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import "testing"
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// 批量入口是导出契约的一部分，必须与逐时刻入口给出同一条数值链。
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func TestSolarEclipseShadowBatchEntriesMatchPerInstantCalls(t *testing.T) {
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footprints := SolarEclipsePartialFootprints(JDECalc(2009, 7, 22), SolarEclipsePartialFootprintOptions{
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StepDays: 6.0 / 1440.0, BoundaryPoints: 48, DisableRiseSetCurves: true,
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CentralShadowStepDays: 6.0 / 1440.0,
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})
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if len(footprints.CentralShadowFootprints) < 3 {
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t.Fatalf("central shadow samples=%d, want a full series", len(footprints.CentralShadowFootprints))
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}
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options := SolarEclipseShadowSolverOptions{}
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step := 6.0 / 1440.0
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start := footprints.CentralShadowFootprints[0].JDE
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end := start + 4*step
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batch := SolarEclipseShadowBetweenJDE(start, end, step, options)
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if len(batch) != 5 {
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t.Fatalf("batch length=%d, want 5", len(batch))
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}
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nonEmpty := 0
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for index, instant := range batch {
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direct, ok := SolarEclipseShadowAtJDE(start+float64(index)*step, options)
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if ok != !direct.Empty() {
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t.Fatalf("instant %d ok=%v, Empty=%v", index, ok, direct.Empty())
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}
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if instant.Empty() != direct.Empty() || len(instant.Boundaries) != len(direct.Boundaries) {
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t.Fatalf("instant %d batch=%d segments, direct=%d", index, len(instant.Boundaries), len(direct.Boundaries))
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}
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if !instant.Empty() {
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nonEmpty++
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}
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}
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if nonEmpty == 0 {
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t.Fatal("batch reported no shadow anywhere along the central path")
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}
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longitude, latitude := footprints.Eclipse.GreatestLongitude, footprints.Eclipse.GreatestLatitude
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solver := NewSolarEclipseShadowSolver(options)
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states := solver.StationStatesBetweenJDE(start, end, step, longitude, latitude, 0)
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if len(states) != len(batch) {
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t.Fatalf("station state batch length=%d, want %d", len(states), len(batch))
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}
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for index, state := range states {
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direct := SolarEclipseStationStateAtJDE(start+float64(index)*step, longitude, latitude, 0, options)
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if state != direct {
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t.Fatalf("station state %d = %+v, want %+v", index, state, direct)
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}
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}
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for _, badStep := range []float64{0, -step} {
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if got := SolarEclipseShadowBetweenJDE(start, end, badStep, options); got != nil {
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t.Fatalf("step %v produced %d instants, want nil", badStep, len(got))
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}
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}
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if got := solver.ShadowBetweenJDE(end, start, step); got != nil {
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t.Fatalf("reversed window produced %d instants, want nil", len(got))
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}
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if got := SolarEclipseShadowBetweenJDE(start, start+10, 1e-9, options); got != nil {
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t.Fatalf("oversized batch produced %d instants, want nil", len(got))
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}
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}
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