package main

import "testing"

// Without --base-url, the base URL comes from --addr, with localhost for an
// unspecified host.
func TestBaseURLFromAddr(t *testing.T) {
	tests := []struct {
		addr string
		want string
	}{
		{":8080", "http://localhost:8080"},
		{"0.0.0.0:8080", "http://localhost:8080"},
		{"[::]:8080", "http://localhost:8080"},
		{"127.0.0.1:18080", "http://127.0.0.1:18080"},
		{"[::1]:8080", "http://[::1]:8080"},
		{"mock.example.com:80", "http://mock.example.com:80"},
	}
	for _, tt := range tests {
		got, err := baseURLFromAddr(tt.addr)
		if err != nil || got != tt.want {
			t.Errorf(
				"baseURLFromAddr(%q) = %q, %v; want %q",
				tt.addr, got, err, tt.want,
			)
		}
	}
}

// An address without a port, or with port 0, is refused.
func TestBaseURLFromAddrRefused(t *testing.T) {
	for _, addr := range []string{"localhost", ":0"} {
		if got, err := baseURLFromAddr(addr); err == nil {
			t.Errorf("baseURLFromAddr(%q) = %q; want an error", addr, got)
		}
	}
}