45 lines
1.9 KiB
Go
45 lines
1.9 KiB
Go
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package svg
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import (
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"testing"
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eclipsesvg "b612.me/astro/eclipse/svg"
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"b612.me/astro/internal/svgmap"
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)
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// 两包为同一投影概念各留一套名字：取值字符串与内部 svgmap 映射必须逐对一致。
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func TestMapProjectionMatchesEclipseSVGContract(t *testing.T) {
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pairs := []struct {
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name string
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value MapProjection
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eclipse eclipsesvg.EclipseMapProjection
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text string
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}{
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{name: "auto", value: MapProjectionAuto, eclipse: eclipsesvg.EclipseMapProjectionAuto, text: ""},
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{name: "equirectangular", value: MapProjectionEquirectangular, eclipse: eclipsesvg.EclipseMapProjectionEquirectangular, text: "equirectangular"},
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{name: "north-polar", value: MapProjectionNorthPolar, eclipse: eclipsesvg.EclipseMapProjectionNorthPolar, text: "north-polar"},
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{name: "south-polar", value: MapProjectionSouthPolar, eclipse: eclipsesvg.EclipseMapProjectionSouthPolar, text: "south-polar"},
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{name: "orthographic", value: MapProjectionOrthographic, eclipse: eclipsesvg.EclipseMapProjectionOrthographic, text: "orthographic"},
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}
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seen := map[svgmap.Projection]string{}
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for _, pair := range pairs {
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if got := string(pair.value); got != pair.text {
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t.Fatalf("moon/svg %s = %q, want %q", pair.name, got, pair.text)
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}
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if got := string(pair.eclipse); got != pair.text {
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t.Fatalf("eclipse/svg %s = %q, want %q", pair.name, got, pair.text)
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}
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moonProjection := internalMapProjection(pair.value)
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if moonProjection != svgmap.Projection(pair.text) {
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t.Fatalf("moon/svg %s maps to %q, want %q", pair.name, moonProjection, svgmap.Projection(pair.text))
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}
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if eclipseProjection := svgmap.Projection(pair.eclipse); eclipseProjection != moonProjection {
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t.Fatalf("%s maps to %q in moon/svg and %q in eclipse/svg", pair.name, moonProjection, eclipseProjection)
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}
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if previous, ok := seen[moonProjection]; ok {
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t.Fatalf("%s and %s share the internal projection %q", previous, pair.name, moonProjection)
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}
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seen[moonProjection] = pair.name
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}
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}
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