// Copyright 2019 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

// +build fuchsia

package net

import (
	"bytes"
	"syscall"
	"syscall/zx/mxnet"
	"testing"
)

func TestIPToSockaddr(t *testing.T) {
	type inArgs struct {
		family int
		ip     IP
		port   int
		zone   string
	}

	type want struct {
		addr    mxnet.Addr
		portres uint16
		zone    uint32
		err     bool
	}

	tests := []struct {
		name string
		in   inArgs
		want want
	}{
		{
			"v4 non-numeric string zone ignored",
			inArgs{syscall.AF_INET, ParseIP("1.2.3.4"), 6667, "zone"},
			want{mxnet.Addr([]byte{1, 2, 3, 4}), 6667, 0, false},
		},
		{
			"v4 numeric string zone ignored",
			inArgs{syscall.AF_INET, ParseIP("1.2.3.4"), 6697, "17"},
			want{mxnet.Addr([]byte{1, 2, 3, 4}), 6697, 0, false},
		},
		{
			"v4 invalid IP returns error",
			inArgs{syscall.AF_INET, IP([]byte{1}), 6697, ""},
			want{"", 0, 0, true},
		},
		{
			"v6 with non-numeric zone ignored",
			inArgs{syscall.AF_INET6, ParseIP("fe80::1"), 443, "zone"},
			want{mxnet.Addr([]byte{0xfe, 0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1}), 443, 0, false},
		},
		{
			"v6 with numeric zone handled properly",
			inArgs{syscall.AF_INET6, ParseIP("fe80::1"), 80, "42"},
			want{mxnet.Addr([]byte{0xfe, 0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1}), 80, 42, false},
		},
		{
			"v6 invalid IP returns error",
			inArgs{syscall.AF_INET6, IP([]byte{1}), 1, ""},
			want{"", 0, 0, true},
		},
	}

	for _, test := range tests {
		addr, portres, zone, err := ipToSockaddr(test.in.family, test.in.ip, test.in.port, test.in.zone)
		if test.want.err && err == nil {
			t.Errorf("test %q returned no error, but an error was expected", test.name)
			continue
		} else if !test.want.err && err != nil {
			t.Errorf("test %q got error %v; no error was expected", test.name, err)
			continue
		}

		if !bytes.Equal([]byte(addr), []byte(test.want.addr)) {
			t.Errorf("test %q got addr %v, wanted %v", test.name, []byte(addr), []byte(test.want.addr))
		}

		if portres != test.want.portres {
			t.Errorf("test %q got portres %d, wanted %d", test.name, portres, test.want.portres)
		}

		if zone != test.want.zone {
			t.Errorf("test %q got zone %d, wanted %d", test.name, zone, test.want.zone)
		}
	}
}