b612
16c62a97d5
- 新增时标、ΔT 模型、质心时间与 UT1 支持 - 改进日月食、月掩、行星事件及路径边界计算 - 完善恒星三维自行与动态距离传播 - 扩展 SVG、GeoJSON、KML 输出与底层距离换算工具 - 整理中英文手册、示例资源及回归测试
71 lines
1.7 KiB
Go
71 lines
1.7 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 TestGetJQTime(t *testing.T) {
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originalFunc := func(year, angle int) float64 {
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const iterations = 1
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var day int
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if angle%2 == 0 {
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day = 18
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} else {
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day = 3
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}
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month := 3.0
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if angle%10 != 0 {
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month += float64(angle+15) / 30.0
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} else {
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month += float64(angle) / 30.0
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}
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if month > 12 {
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month -= 12
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}
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jd := JDCalc(year, int(month), float64(day))
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if angle == 0 {
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angle = 360
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}
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for i := 0; i < iterations; i++ {
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for {
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jd0 := jd
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slope := (JQLospec(jd0+0.000005, float64(angle)) - JQLospec(jd0-0.000005, float64(angle))) / 0.00001
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jd = jd0 - (JQLospec(jd0, float64(angle))-float64(angle))/slope
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if math.Abs(jd-jd0) <= 0.00001 {
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break
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}
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}
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jd -= 0.001
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}
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jd += 0.001
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return TT2UTC(jd)
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}
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testCases := []struct {
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year int
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angle int
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}{
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{1900, 0}, {1900, 15}, {1900, 30}, {1900, 45}, {1900, 90}, {1900, 180}, {1900, 270}, {1900, 360},
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{1950, 0}, {1950, 30}, {1950, 90}, {1950, 180}, {1950, 270},
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{2000, 0}, {2000, 15}, {2000, 45}, {2000, 90}, {2000, 360},
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{2023, 0}, {2023, 30}, {2023, 90}, {2023, 180}, {2023, 270},
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{2100, 0}, {2100, 15}, {2100, 30}, {2100, 45}, {2100, 90}, {2100, 180}, {2100, 270}, {2100, 360},
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{2200, 0}, {2200, 30}, {2200, 90}, {2200, 180}, {2200, 270},
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}
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for _, tc := range testCases {
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originalResult := originalFunc(tc.year, tc.angle)
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optimizedResult := GetJQTime(tc.year, tc.angle)
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diff := math.Abs(originalResult - optimizedResult)
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if diff > 1e-10 {
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t.Fatalf("GetJQTime mismatch: year=%d angle=%d original=%.15f optimized=%.15f diff=%.15f",
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tc.year, tc.angle, originalResult, optimizedResult, diff)
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}
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}
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}
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