scan-flow: geolocation scan, location-aware SMS throttle (log sender), finder contact, sms_enabled toggle, branding — 19/19 phase-2 scenarios pass

frontend/internal/sms/sms_test.go

@@ -0,0 +1,52 @@
+package sms
+
+import (
+	"math"
+	"testing"
+)
+
+func TestHaversineMeters(t *testing.T) {
+	cases := []struct {
+		name           string
+		lat1, lng1     float64
+		lat2, lng2     float64
+		wantMeters     float64
+		tolerancePct   float64
+	}{
+		{"same point", -33.86, 151.21, -33.86, 151.21, 0, 0},
+		{"Sydney CBD to Parramatta (~20km)", -33.8688, 151.2093, -33.8125, 151.0011, 20200, 0.02},
+		{"~250m at Sydney latitude", -33.86, 151.21, -33.86, 151.2128, 250, 0.20},
+		{"antipodal-ish long distance", 0, 0, 0, 180, 20037500, 0.01},
+	}
+	for _, tc := range cases {
+		t.Run(tc.name, func(t *testing.T) {
+			got := HaversineMeters(tc.lat1, tc.lng1, tc.lat2, tc.lng2)
+			if tc.wantMeters == 0 {
+				if got > 1 {
+					t.Fatalf("same point: got %.1f m, want ~0", got)
+				}
+				return
+			}
+			diff := math.Abs(got-tc.wantMeters) / tc.wantMeters
+			if diff > tc.tolerancePct {
+				t.Fatalf("got %.1f m, want ~%.1f m (error %.1f%%)", got, tc.wantMeters, diff*100)
+			}
+		})
+	}
+}
+
+func TestNormalizeAU(t *testing.T) {
+	cases := []struct{ in, want string }{
+		{"+61432374487", "61432374487"},
+		{"0432374487", "61432374487"},
+		{"61432374487", "61432374487"},
+		{"+61 432 374 487", "61432374487"},
+		{"(04) 3237 4487", "61432374487"},
+		{"", ""},
+	}
+	for _, tc := range cases {
+		if got := NormalizeAU(tc.in); got != tc.want {
+			t.Errorf("NormalizeAU(%q) = %q, want %q", tc.in, got, tc.want)
+		}
+	}
+}