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
64 lines
2.9 KiB
Go
64 lines
2.9 KiB
Go
package formula
|
|
|
|
import (
|
|
"math"
|
|
"testing"
|
|
)
|
|
|
|
func assertFormulaClose(t *testing.T, name string, got, want, tolerance float64) {
|
|
t.Helper()
|
|
if math.Abs(got-want) > tolerance {
|
|
t.Fatalf("%s mismatch: got %.15f want %.15f", name, got, want)
|
|
}
|
|
}
|
|
|
|
func TestBlackbodyFormulas(t *testing.T) {
|
|
assertFormulaClose(t, "WienPeakWavelength", WienPeakWavelength(5772), 5.020394931568954e-07, 1e-15)
|
|
assertFormulaClose(t, "StefanBoltzmannFlux", StefanBoltzmannFlux(5772), 6.293859246828887e+07, 1e-6)
|
|
assertFormulaClose(t, "PlanckRadianceByWavelength", PlanckRadianceByWavelength(500e-9, 5772), 2.6238540568595848e+13, 1e-1)
|
|
|
|
if !math.IsNaN(WienPeakWavelength(0)) {
|
|
t.Fatal("expected WienPeakWavelength(0) to be NaN")
|
|
}
|
|
}
|
|
|
|
func TestPhotometryFormulas(t *testing.T) {
|
|
assertFormulaClose(t, "DistanceModulus(10pc)", DistanceModulus(10), 0, 1e-15)
|
|
assertFormulaClose(t, "DistanceModulus(100pc)", DistanceModulus(100), 5, 1e-15)
|
|
assertFormulaClose(t, "ApparentMagnitudeFromAbsolute", ApparentMagnitudeFromAbsolute(4.83, 100), 9.83, 1e-15)
|
|
assertFormulaClose(t, "AbsoluteMagnitudeFromApparent", AbsoluteMagnitudeFromApparent(9.83, 100), 4.83, 1e-12)
|
|
}
|
|
|
|
func TestStellarParameterFormulas(t *testing.T) {
|
|
luminosity := LuminosityFromRadiusTemperature(2.5*solarRadiusM, 9000)
|
|
radius := RadiusFromLuminosityTemperature(luminosity, 9000)
|
|
temperature := EffectiveTemperatureFromLuminosityRadius(luminosity, 2.5*solarRadiusM)
|
|
assertFormulaClose(t, "RadiusFromLuminosityTemperature", radius, 2.5*solarRadiusM, 1e-4)
|
|
assertFormulaClose(t, "EffectiveTemperatureFromLuminosityRadius", temperature, 9000, 1e-9)
|
|
|
|
luminositySolar := LuminositySolarFromRadiusTemperature(2.5, 9000)
|
|
radiusSolar := RadiusSolarFromLuminosityTemperature(luminositySolar, 9000)
|
|
temperatureSolar := EffectiveTemperatureFromLuminositySolarRadius(luminositySolar, 2.5)
|
|
assertFormulaClose(t, "RadiusSolarFromLuminosityTemperature", radiusSolar, 2.5, 1e-12)
|
|
assertFormulaClose(t, "EffectiveTemperatureFromLuminositySolarRadius", temperatureSolar, 9000, 1e-9)
|
|
assertFormulaClose(t, "SolarEffectiveTemperature", SolarEffectiveTemperature(), 5772, 1e-12)
|
|
}
|
|
|
|
func TestSynodicPeriod(t *testing.T) {
|
|
assertFormulaClose(t, "Earth-Venus synodic period", SynodicPeriod(365.25636, 224.70069), 583.9206352820089, 1e-9)
|
|
if !math.IsInf(SynodicPeriod(365.25636, 365.25636), 1) {
|
|
t.Fatal("expected equal periods to yield +Inf synodic period")
|
|
}
|
|
}
|
|
|
|
func TestTelescopeFormulas(t *testing.T) {
|
|
assertFormulaClose(t, "LightGatheringPowerRatio", LightGatheringPowerRatio(200, 100), 4, 1e-15)
|
|
assertFormulaClose(t, "DawesLimitArcsec", DawesLimitArcsec(100), 1.16, 1e-15)
|
|
assertFormulaClose(t, "RayleighLimitArcsec", RayleighLimitArcsec(100), 1.384, 1e-15)
|
|
assertFormulaClose(t, "LimitingMagnitudeEmpirical", LimitingMagnitudeEmpirical(70, 6), 11, 1e-15)
|
|
|
|
if !math.IsNaN(LightGatheringPowerRatio(0, 100)) {
|
|
t.Fatal("expected invalid aperture to produce NaN")
|
|
}
|
|
}
|