76 lines
2.7 KiB
Go
76 lines
2.7 KiB
Go
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package sun
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import (
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"math"
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"testing"
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"time"
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)
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func TestObservationNFullMatchesDefault(t *testing.T) {
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date := time.Date(2026, 4, 26, 9, 30, 45, 123456789, time.FixedZone("CST", 8*3600))
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lon := 116.391
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lat := 39.907
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height := 45.0
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twilightAngle := -6.0
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assertSame := func(name string, got, want float64) {
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t.Helper()
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if math.Float64bits(got) != math.Float64bits(want) {
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t.Fatalf("%s full-n mismatch", name)
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}
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}
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assertTimeSame := func(name string, got, want time.Time) {
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t.Helper()
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if got.UnixNano() != want.UnixNano() || got.Location().String() != want.Location().String() {
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t.Fatalf("%s full-n mismatch", name)
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}
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}
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assertErrSame := func(name string, got, want error) {
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t.Helper()
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switch {
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case got == nil && want == nil:
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return
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case got == nil || want == nil:
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t.Fatalf("%s full-n mismatch", name)
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case got.Error() != want.Error():
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t.Fatalf("%s full-n mismatch", name)
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}
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}
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assertSame("HourAngle", HourAngle(date, lon, lat), HourAngleN(date, lon, lat, -1))
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assertSame("ParallacticAngle", ParallacticAngle(date, lon, lat), ParallacticAngleN(date, lon, lat, -1))
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assertSame("Azimuth", Azimuth(date, lon, lat), AzimuthN(date, lon, lat, -1))
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assertSame("Altitude", Altitude(date, lon, lat), AltitudeN(date, lon, lat, -1))
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assertSame("Zenith", Zenith(date, lon, lat), ZenithN(date, lon, lat, -1))
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if !math.IsNaN(Altitude(date, lon, lat)) && math.Abs((Altitude(date, lon, lat)+Zenith(date, lon, lat))-90) > 1e-12 {
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t.Fatal("sun altitude + zenith should equal 90 degrees")
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}
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assertTimeSame("CulminationTime", CulminationTime(date, lon), CulminationTimeN(date, lon, -1))
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assertTimeSame("ApparentSolarTime", ApparentSolarTime(date, lon), ApparentSolarTimeN(date, lon, -1))
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rise1, err1 := RiseTime(date, lon, lat, height, true)
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rise2, err2 := RiseTimeN(date, lon, lat, height, true, -1)
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assertTimeSame("RiseTime", rise1, rise2)
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assertErrSame("RiseTime.err", err1, err2)
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set1, err1 := SetTime(date, lon, lat, height, true)
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set2, err2 := SetTimeN(date, lon, lat, height, true, -1)
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assertTimeSame("SetTime", set1, set2)
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assertErrSame("SetTime.err", err1, err2)
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down1, err1 := DownTime(date, lon, lat, height, true)
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down2, err2 := DownTimeN(date, lon, lat, height, true, -1)
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assertTimeSame("DownTime", down1, down2)
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assertErrSame("DownTime.err", err1, err2)
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morning1, err1 := MorningTwilight(date, lon, lat, twilightAngle)
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morning2, err2 := MorningTwilightN(date, lon, lat, twilightAngle, -1)
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assertTimeSame("MorningTwilight", morning1, morning2)
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assertErrSame("MorningTwilight.err", err1, err2)
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evening1, err1 := EveningTwilight(date, lon, lat, twilightAngle)
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evening2, err2 := EveningTwilightN(date, lon, lat, twilightAngle, -1)
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assertTimeSame("EveningTwilight", evening1, evening2)
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assertErrSame("EveningTwilight.err", err1, err2)
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}
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