feat: 扩展天文计算能力
- 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
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package basic
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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 TestGetNowJDEUsesSingleTimestamp(t *testing.T) {
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oldTimeNow := timeNow
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defer func() {
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timeNow = oldTimeNow
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}()
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calls := 0
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first := time.Date(2026, 4, 29, 23, 59, 59, 0, time.FixedZone("CST", 8*3600))
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second := first.Add(2 * time.Second)
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timeNow = func() time.Time {
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calls++
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if calls == 1 {
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return first
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}
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return second
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}
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got := GetNowJDE()
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want := Date2JDE(first)
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if calls != 1 {
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t.Fatalf("GetNowJDE should read current time once, got %d calls", calls)
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}
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if math.Float64bits(got) != math.Float64bits(want) {
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t.Fatalf("GetNowJDE mismatch: got %.15f want %.15f", got, want)
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}
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}
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