package main

import "testing"

func TestAddRecentLocationLRU(t *testing.T) {
	locA := Location{Lat: 1, Lon: 1, City: "A"}
	locB := Location{Lat: 2, Lon: 2, City: "B"}
	locC := Location{Lat: 3, Lon: 3, City: "C"}

	recent := []Location{locA, locB}
	recent = addRecentLocation(recent, locC, 3)
	if len(recent) != 3 || !sameLocation(recent[0], locC) {
		t.Fatalf("expected new location at front")
	}

	recent = addRecentLocation(recent, locB, 3)
	if len(recent) != 3 || !sameLocation(recent[0], locB) {
		t.Fatalf("expected B to move to front")
	}
}