46 lines
1.5 KiB
Go
46 lines
1.5 KiB
Go
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// 被测契约：非法 Body 与非有限历元必须报错而不是 panic 或静默返回 NaN；缓存槽不得跨天体串用。
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package semianalytic
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import (
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"math"
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"testing"
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"b612.me/astro/internal/ephem"
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)
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func TestApparentRejectsUnsupportedBody(t *testing.T) {
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for _, body := range []ephem.Body{ephem.SSB, ephem.EMB, ephem.Earth, ephem.Body(-1), ephem.Body(2000001)} {
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if _, _, _, err := Apparent(body, 2451545); err != ephem.ErrUnsupportedBody {
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t.Errorf("Apparent(%d) err = %v, want %v", body, err, ephem.ErrUnsupportedBody)
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}
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}
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}
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func TestApparentCacheSlotsAreDistinct(t *testing.T) {
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const jd = 2451545.0
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sunDir, sunDist, _, err := Apparent(ephem.Sun, jd)
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if err != nil {
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t.Fatalf("Apparent(Sun) err = %v", err)
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}
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for _, body := range []ephem.Body{ephem.Mercury, ephem.Mars, ephem.Neptune, ephem.Moon} {
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dir, dist, _, err := Apparent(body, jd)
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if err != nil {
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t.Fatalf("Apparent(%d) err = %v", body, err)
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}
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if dir == sunDir && dist == sunDist {
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t.Errorf("Apparent(%d) returned the Sun entry", body)
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}
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}
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}
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func TestNonFiniteEpochIsOutOfRange(t *testing.T) {
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for _, jd := range []float64{math.NaN(), math.Inf(1), math.Inf(-1)} {
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if _, _, err := (Ephemeris{}).State(ephem.Mars, ephem.Sun, jd); err != ephem.ErrOutOfRange {
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t.Errorf("State(%v) err = %v, want %v", jd, err, ephem.ErrOutOfRange)
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}
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if _, _, _, err := (Ephemeris{}).Apparent(ephem.Mars, jd); err != ephem.ErrOutOfRange {
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t.Errorf("Apparent(%v) err = %v, want %v", jd, err, ephem.ErrOutOfRange)
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}
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}
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}
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