50 lines
1.9 KiB
Go
50 lines
1.9 KiB
Go
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package geojson_test
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import (
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"testing"
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"time"
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"b612.me/astro/eclipse"
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"b612.me/astro/geojson"
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)
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func TestMarshalSolarEclipse29020726DoesNotFillNighttimeCanada(t *testing.T) {
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date := time.Date(2902, time.July, 26, 0, 0, 0, 0, time.UTC)
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partial, ok := eclipse.SolarEclipsePartialFootprints(date, eclipse.SolarEclipsePartialFootprintOptions{
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Step: 2 * time.Minute, BoundaryPoints: 96, CentralShadowStep: 2 * time.Minute,
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MagnitudeValues: []float64{0.2, 0.4, 0.6, 0.8, 1.0},
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})
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if !ok {
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t.Fatal("expected solar eclipse footprints")
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}
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data, err := geojson.MarshalSolarEclipse(partial, nil)
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if err != nil {
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t.Fatalf("MarshalSolarEclipse: %v", err)
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}
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band := featureWithRole(t, decodeCollection(t, data), "partial-band")
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if band.Geometry.Type != "MultiPolygon" {
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t.Fatalf("partial-band geometry=%q, want MultiPolygon", band.Geometry.Type)
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}
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for _, site := range []struct {
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name string
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longitude float64
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latitude float64
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wantInside bool
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}{
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{name: "Edmonton", longitude: -113.4909, latitude: 53.5461},
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{name: "Churchill", longitude: -94.1650, latitude: 58.7684},
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{name: "Iqaluit", longitude: -68.5170, latitude: 63.7467},
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{name: "Resolute", longitude: -94.8297, latitude: 74.6973, wantInside: true},
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{name: "Alert", longitude: -62.3481, latitude: 82.5018, wantInside: true},
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{name: "Bering east of envelope", longitude: 179, latitude: 65},
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{name: "Bering inside excluded pocket", longitude: 175, latitude: 65},
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{name: "Bering west of envelope", longitude: 170, latitude: 65, wantInside: true},
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{name: "Bering west world", longitude: -179, latitude: 65},
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{name: "Arctic east world", longitude: 179.9, latitude: 80, wantInside: true},
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} {
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if got := geometryContainsPoint(t, band.Geometry, site.longitude, site.latitude); got != site.wantInside {
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t.Errorf("partial-band contains %s=%v, want %v", site.name, got, site.wantInside)
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}
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}
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}
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