starainrt
3ffdbe0034
- 新增日食、月食、本地可见性、中心线、半影区域、SVG 图示与沙罗周期信息 - 新增行星冲合、留、方照、物理星历、视直径、相位、亮肢角、轨道节点等计算 - 新增木星伽利略卫星位置、现象与接触事件计算 - 新增恒星星表、星座判定、自行修正与观测辅助能力 - 新增 coord、formula、orbit、sundial、lite/sun、lite/moon 等扩展包 - 完善农历年号、月相英文别名、视差角、大气质量、折射、日晷与双星计算 - 增加 NASA、JPL Horizons、IMCCE 等回归测试数据与基线测试 - 重构基础算法文件组织，补充大量公开 API 注释和语义回归测试 - 更新中文和英文 README，补充示例、精度说明、SVG 配图
50 lines
2.1 KiB
Go
50 lines
2.1 KiB
Go
package basic
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import (
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"math"
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"testing"
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)
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func TestSaturnRingParametersMeeusExample(t *testing.T) {
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earthLatitude, sunLatitude, positionAngle, deltaU, majorAxis, minorAxis := SaturnRingParameters(2448972.50068)
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assertClose(t, "EarthLatitude", earthLatitude, 16.4415, 0.0001)
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assertClose(t, "SunLatitude", sunLatitude, 14.6782, 0.0001)
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assertClose(t, "PositionAngle", positionAngle, 6.7406, 0.0001)
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assertClose(t, "DeltaU", deltaU, 4.1991, 0.0001)
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assertClose(t, "MajorAxis", majorAxis, 35.8687, 0.0001)
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assertClose(t, "MinorAxis", minorAxis, 10.1521, 0.0001)
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}
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func TestSaturnRingNFullMatchesDefault(t *testing.T) {
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jd := 2448972.50068
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defaultEarthLatitude, defaultSunLatitude, defaultPositionAngle, defaultDeltaU, defaultMajorAxis, defaultMinorAxis := SaturnRingParameters(jd)
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truncatedEarthLatitude, truncatedSunLatitude, truncatedPositionAngle, truncatedDeltaU, truncatedMajorAxis, truncatedMinorAxis := SaturnRingParametersN(jd, -1)
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assertSameFloat(t, "EarthLatitude", defaultEarthLatitude, truncatedEarthLatitude)
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assertSameFloat(t, "SunLatitude", defaultSunLatitude, truncatedSunLatitude)
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assertSameFloat(t, "PositionAngle", defaultPositionAngle, truncatedPositionAngle)
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assertSameFloat(t, "DeltaU", defaultDeltaU, truncatedDeltaU)
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assertSameFloat(t, "MajorAxis", defaultMajorAxis, truncatedMajorAxis)
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assertSameFloat(t, "MinorAxis", defaultMinorAxis, truncatedMinorAxis)
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assertSameFloat(t, "SaturnRingB", SaturnRingB(jd), SaturnRingBN(jd, -1))
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assertSameFloat(t, "SaturnRingSunB", SaturnRingSunB(jd), SaturnRingSunBN(jd, -1))
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assertSameFloat(t, "SaturnRingPositionAngle", SaturnRingPositionAngle(jd), SaturnRingPositionAngleN(jd, -1))
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assertSameFloat(t, "SaturnRingDeltaU", SaturnRingDeltaU(jd), SaturnRingDeltaUN(jd, -1))
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}
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func assertClose(t *testing.T, name string, got, want, tolerance float64) {
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t.Helper()
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if math.Abs(got-want) > tolerance {
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t.Fatalf("%s mismatch: got %.12f want %.12f tolerance %.12f", name, got, want, tolerance)
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}
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}
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func assertSameFloat(t *testing.T, 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: got %.18f want %.18f", name, got, want)
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}
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}
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