47 lines
2.1 KiB
Go
47 lines
2.1 KiB
Go
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package moon
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import (
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"math"
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"testing"
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"time"
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"b612.me/astro/basic"
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)
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func TestTopocentricPhysicalWrapperMatchesBasic(t *testing.T) {
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date := time.Date(2026, 4, 28, 9, 30, 45, 0, time.UTC)
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jd := observationTT(date)
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observerLon := 121.4737
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observerLat := 31.2304
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height := 4.0
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got := TopocentricPhysical(date, observerLon, observerLat, height)
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want := basic.MoonTopocentricPhysicalN(jd, observerLon, observerLat, height, -1)
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assertMoonPhysicalSameFloat(t, "OpticalLongitude", got.OpticalLongitude, want.OpticalLongitude)
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assertMoonPhysicalSameFloat(t, "OpticalLatitude", got.OpticalLatitude, want.OpticalLatitude)
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assertMoonPhysicalSameFloat(t, "PhysicalLongitude", got.PhysicalLongitude, want.PhysicalLongitude)
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assertMoonPhysicalSameFloat(t, "PhysicalLatitude", got.PhysicalLatitude, want.PhysicalLatitude)
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assertMoonPhysicalSameFloat(t, "LibrationLongitude", got.LibrationLongitude, want.LibrationLongitude)
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assertMoonPhysicalSameFloat(t, "LibrationLatitude", got.LibrationLatitude, want.LibrationLatitude)
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assertMoonPhysicalSameFloat(t, "PositionAngle", got.PositionAngle, want.PositionAngle)
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}
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func TestTopocentricPhysicalPreservesInstantAcrossTimezones(t *testing.T) {
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utc := time.Date(2026, 4, 28, 9, 30, 45, 123000000, time.UTC)
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shanghai := utc.In(time.FixedZone("UTC+8", 8*3600))
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observerLon := 121.4737
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observerLat := 31.2304
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height := 4.0
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got := TopocentricPhysical(shanghai, observerLon, observerLat, height)
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want := TopocentricPhysical(utc, observerLon, observerLat, height)
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valuesGot := []float64{got.OpticalLongitude, got.OpticalLatitude, got.PhysicalLongitude, got.PhysicalLatitude, got.LibrationLongitude, got.LibrationLatitude, got.PositionAngle}
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valuesWant := []float64{want.OpticalLongitude, want.OpticalLatitude, want.PhysicalLongitude, want.PhysicalLatitude, want.LibrationLongitude, want.LibrationLatitude, want.PositionAngle}
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for i := range valuesGot {
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if math.Float64bits(valuesGot[i]) != math.Float64bits(valuesWant[i]) {
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t.Fatalf("timezone instant mismatch at index %d: got %.18f want %.18f", i, valuesGot[i], valuesWant[i])
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}
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}
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}
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