package main

import "testing"

func TestListenAddressDefaultsToLoopbackAndSupportsExplicitBinding(t *testing.T) {
	if got := listenAddress(func(string) string { return "" }); got != "127.0.0.1:8080" {
		t.Fatalf("listenAddress(defaults) = %q", got)
	}
	values := map[string]string{"GO_BACKEND_HOST": "0.0.0.0", "GO_BACKEND_PORT": "9080"}
	if got := listenAddress(func(name string) string { return values[name] }); got != "0.0.0.0:9080" {
		t.Fatalf("listenAddress(explicit) = %q", got)
	}
}