Files
astro/geojson/transit_partial_test.go
T

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package geojson_test
import (
"encoding/json"
"testing"
"time"
"b612.me/astro/geojson"
"b612.me/astro/venus"
)
func TestMarshalVenusTransitGlobalPartial(tester *testing.T) {
info := venus.NextTransit(time.Date(2854, 1, 1, 0, 0, 0, 0, time.UTC))
data, err := geojson.MarshalVenusTransit(info, geojson.PlanetTransitOptions{IsochroneStep: 30 * time.Second})
if err != nil {
tester.Fatal(err)
}
collection, roles := decodeTransit(tester, data)
for _, role := range []string{"transit-partial", "greatest", "c1-isochrone", "c4-isochrone"} {
if roles[role] != 1 {
tester.Fatalf("missing %s: %v", role, roles)
}
}
for _, role := range []string{"c1-horizon", "c4-horizon", "visible-at-c1", "visible-at-c4", "c2-isochrone", "c3-isochrone", "transit-entire"} {
if roles[role] != 0 {
tester.Fatalf("fabricated %s", role)
}
}
for _, item := range collection.Features {
if item.Properties["role"] != "transit-partial" {
continue
}
var polygons [][][][]float64
if err := json.Unmarshal(item.Geometry.Coordinates, &polygons); err != nil {
tester.Fatal(err)
}
if !geoJSONMultiPolygonContains(polygons, -135, -60) || geoJSONMultiPolygonContains(polygons, 0, 45) {
tester.Fatal("partial-transit footprint does not match the topocentric geometry")
}
if item.Properties["has_geocentric_contacts"] != false || item.Properties["series"] != float64(4) || item.Properties["gamma"] == nil {
tester.Fatalf("missing global-transit metadata: %v", item.Properties)
}
}
}