package xproto

import (
	"encoding/binary"
	"testing"
)

func TestRectangleWire(t *testing.T) {
	v := Rectangle{X: -2, Y: 3, Width: 640, Height: 480}
	var p [8]byte
	v.Put(p[:])
	want := [8]byte{254, 255, 3, 0, 128, 2, 224, 1}
	if p != want || GetRectangle(p[:]) != v {
		t.Fatalf("wire %x", p)
	}
}
func TestVariableStructWire(t *testing.T) {
	v := Str{NameLen: 3, Name: "abc"}
	p := make([]byte, v.Size())
	v.Put(p)
	if string(p) != "\x03abc" {
		t.Fatalf("wire %x", p)
	}
	s := SetupRequest{ByteOrder: 'l', ProtocolMajorVersion: 11, AuthorizationProtocolNameLen: 1, AuthorizationProtocolDataLen: 2, AuthorizationProtocolName: "a", AuthorizationProtocolData: "bc"}
	p = make([]byte, s.Size())
	s.Put(p)
	if len(p) != 20 || p[12] != 'a' || p[16] != 'b' || p[17] != 'c' || p[19] != 0 {
		t.Fatalf("aligned setup %x", p)
	}
}
func TestUnionView(t *testing.T) {
	var p [20]byte
	binary.LittleEndian.PutUint32(p[:], 0x12345678)
	v := GetClientMessageData(p[:])
	if v.Data8()[0] != 0x78 || v.Data16()[0] != 0x5678 || v.Data32()[0] != 0x12345678 {
		t.Fatal("union members")
	}
}
func TestAllocStructPut(t *testing.T) {
	v := Rectangle{Width: 10}
	var p [8]byte
	if n := testing.AllocsPerRun(1000, func() { v.Put(p[:]); _ = GetRectangle(p[:]) }); n != 0 {
		t.Fatal(n)
	}
}

func BenchmarkRectanglePut(b *testing.B) {
	v := Rectangle{Width: 640, Height: 480}
	var p [8]byte
	b.ReportAllocs()
	for b.Loop() {
		v.Put(p[:])
	}
}