78 lines
3.7 KiB
Go
78 lines
3.7 KiB
Go
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package svg
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import (
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"strings"
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"testing"
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"time"
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eclipsecore "b612.me/astro/eclipse"
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)
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// 三个无后缀月食 SVG 入口共用与 LunarEclipseOnDate 一致的默认模型：Danjon 为主，
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// 极浅半影回退 Chauvenet。2016-08-18 是 Danjon 判无食、Chauvenet 判极浅半影的个例。
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func TestLunarEclipseSVGDefaultModelMatchesCore(t *testing.T) {
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date := time.Date(2016, time.August, 18, 0, 0, 0, 0, time.UTC)
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info, coreOK := eclipsecore.LunarEclipseOnDate(date)
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if !coreOK {
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t.Fatal("2016-08-18 is no longer a default-model eclipse date")
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}
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if info.ShadowModel != eclipsecore.LunarEclipseShadowModelChauvenet {
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t.Fatalf("default model = %v, want the Chauvenet fallback", info.ShadowModel)
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}
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if _, danjonOK := eclipsecore.LunarEclipseOnDateDanjon(date); danjonOK {
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t.Fatal("2016-08-18 no longer separates the Danjon and default models")
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}
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mapRendered, mapOK := LunarEclipseMapSVG(date, LunarEclipseMapSVGOptions{Width: 900, Height: 620, Location: time.UTC})
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plain, plainOK := LunarEclipseSVG(date, LunarEclipseSVGOptions{Width: 960, Height: 620, Location: time.UTC})
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detailed, detailedOK := LunarEclipseDetailedSVG(date, LunarEclipseDetailedSVGOptions{Width: 1000, Height: 1414, Location: time.UTC})
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if !mapOK || !plainOK || !detailedOK {
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t.Fatalf("default-model entries disagree: map=%v svg=%v detailed=%v (core=%v)", mapOK, plainOK, detailedOK, coreOK)
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}
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if mapRendered == "" || plain == "" || detailed == "" {
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t.Fatal("a default-model entry reported success but returned no document")
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}
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// 出图必须真的走 Chauvenet：详细版页脚写出实际模型，且与强制 Chauvenet 入口逐字节相同。
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if !strings.Contains(detailed, "Chauvenet") {
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t.Fatal("detailed chart does not name the Chauvenet fallback model")
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}
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chauvenet, chauvenetOK := LunarEclipseDetailedSVGChauvenet(date, LunarEclipseDetailedSVGOptions{Width: 1000, Height: 1414, Location: time.UTC})
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if !chauvenetOK || chauvenet != detailed {
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t.Fatal("default detailed chart differs from the forced Chauvenet chart")
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}
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forcedPlain, forcedPlainOK := LunarEclipseSVGChauvenet(date, LunarEclipseSVGOptions{Width: 960, Height: 620, Location: time.UTC})
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if !forcedPlainOK || forcedPlain != plain {
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t.Fatal("default lunar chart differs from the forced Chauvenet chart")
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}
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forcedMap, forcedMapOK := LunarEclipseMapSVGChauvenet(date, LunarEclipseMapSVGOptions{Width: 900, Height: 620, Location: time.UTC})
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if !forcedMapOK || forcedMap != mapRendered {
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t.Fatal("default lunar map differs from the forced Chauvenet map")
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}
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// 强制 Danjon 的两个入口必须继续判无食，后缀入口不得被默认口径带偏。
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if _, ok := LunarEclipseSVGDanjon(date, LunarEclipseSVGOptions{}); ok {
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t.Fatal("the Danjon-only chart accepted a date that Danjon rejects")
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}
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if _, ok := LunarEclipseDetailedSVGDanjon(date, LunarEclipseDetailedSVGOptions{}); ok {
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t.Fatal("the Danjon-only detailed chart accepted a date that Danjon rejects")
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}
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if _, ok := LunarEclipseMapSVGDanjon(date, LunarEclipseMapSVGOptions{}); ok {
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t.Fatal("the Danjon-only map accepted a date that Danjon rejects")
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}
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}
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// 默认模型在普通月食日期上仍走 Danjon，不能把全部入口改成回退口径。
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func TestLunarEclipseSVGDefaultModelKeepsDanjon(t *testing.T) {
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date := time.Date(2025, time.March, 14, 0, 0, 0, 0, time.UTC)
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detailed, ok := LunarEclipseDetailedSVG(date, LunarEclipseDetailedSVGOptions{Width: 1000, Height: 1414, Location: time.UTC})
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if !ok {
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t.Fatal("missing 2025-03-14 detailed chart")
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}
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if !strings.Contains(detailed, "Danjon") || strings.Contains(detailed, "Chauvenet") {
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t.Fatal("2025-03-14 is a Danjon eclipse but the chart claims another model")
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}
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if _, ok := LunarEclipseSVG(date, LunarEclipseSVGOptions{}); !ok {
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t.Fatal("missing 2025-03-14 chart")
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}
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}
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