53 lines
1.4 KiB
Go
53 lines
1.4 KiB
Go
package sms
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import (
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"math"
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"testing"
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)
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func TestHaversineMeters(t *testing.T) {
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cases := []struct {
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name string
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lat1, lng1 float64
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lat2, lng2 float64
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wantMeters float64
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tolerancePct float64
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}{
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{"same point", -33.86, 151.21, -33.86, 151.21, 0, 0},
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{"Sydney CBD to Parramatta (~20km)", -33.8688, 151.2093, -33.8125, 151.0011, 20200, 0.02},
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{"~250m at Sydney latitude", -33.86, 151.21, -33.86, 151.2128, 250, 0.20},
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{"antipodal-ish long distance", 0, 0, 0, 180, 20037500, 0.01},
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}
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for _, tc := range cases {
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t.Run(tc.name, func(t *testing.T) {
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got := HaversineMeters(tc.lat1, tc.lng1, tc.lat2, tc.lng2)
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if tc.wantMeters == 0 {
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if got > 1 {
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t.Fatalf("same point: got %.1f m, want ~0", got)
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}
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return
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}
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diff := math.Abs(got-tc.wantMeters) / tc.wantMeters
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if diff > tc.tolerancePct {
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t.Fatalf("got %.1f m, want ~%.1f m (error %.1f%%)", got, tc.wantMeters, diff*100)
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}
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})
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}
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}
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func TestNormalizeAU(t *testing.T) {
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cases := []struct{ in, want string }{
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{"+61432374487", "61432374487"},
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{"0432374487", "61432374487"},
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{"61432374487", "61432374487"},
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{"+61 432 374 487", "61432374487"},
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{"(04) 3237 4487", "61432374487"},
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{"", ""},
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}
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for _, tc := range cases {
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if got := NormalizeAU(tc.in); got != tc.want {
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t.Errorf("NormalizeAU(%q) = %q, want %q", tc.in, got, tc.want)
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}
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}
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}
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