package netxmocks

import (
	"errors"
	"net"
	"testing"
	"time"

	"github.com/google/go-cmp/cmp"
)

func TestConnReadWorks(t *testing.T) {
	expected := errors.New("mocked error")
	c := &Conn{
		MockRead: func(b []byte) (int, error) {
			return 0, expected
		},
	}
	count, err := c.Read(make([]byte, 128))
	if !errors.Is(err, expected) {
		t.Fatal("not the error we expected")
	}
	if count != 0 {
		t.Fatal("expected 0 bytes")
	}
}

func TestConnWriteWorks(t *testing.T) {
	expected := errors.New("mocked error")
	c := &Conn{
		MockWrite: func(b []byte) (int, error) {
			return 0, expected
		},
	}
	count, err := c.Write(make([]byte, 128))
	if !errors.Is(err, expected) {
		t.Fatal("not the error we expected")
	}
	if count != 0 {
		t.Fatal("expected 0 bytes")
	}
}

func TestConnCloseWorks(t *testing.T) {
	expected := errors.New("mocked error")
	c := &Conn{
		MockClose: func() error {
			return expected
		},
	}
	err := c.Close()
	if !errors.Is(err, expected) {
		t.Fatal("not the error we expected")
	}
}

func TestConnLocalAddrWorks(t *testing.T) {
	expected := &net.TCPAddr{
		IP:   net.IPv6loopback,
		Port: 1234,
	}
	c := &Conn{
		MockLocalAddr: func() net.Addr {
			return expected
		},
	}
	out := c.LocalAddr()
	if diff := cmp.Diff(expected, out); diff != "" {
		t.Fatal(diff)
	}
}

func TestConnRemoteAddrWorks(t *testing.T) {
	expected := &net.TCPAddr{
		IP:   net.IPv6loopback,
		Port: 1234,
	}
	c := &Conn{
		MockRemoteAddr: func() net.Addr {
			return expected
		},
	}
	out := c.RemoteAddr()
	if diff := cmp.Diff(expected, out); diff != "" {
		t.Fatal(diff)
	}
}

func TestConnSetDeadline(t *testing.T) {
	expected := errors.New("mocked error")
	c := &Conn{
		MockSetDeadline: func(t time.Time) error {
			return expected
		},
	}
	err := c.SetDeadline(time.Time{})
	if !errors.Is(err, expected) {
		t.Fatal("not the error we expected", err)
	}
}

func TestConnSetReadDeadline(t *testing.T) {
	expected := errors.New("mocked error")
	c := &Conn{
		MockSetReadDeadline: func(t time.Time) error {
			return expected
		},
	}
	err := c.SetReadDeadline(time.Time{})
	if !errors.Is(err, expected) {
		t.Fatal("not the error we expected", err)
	}
}

func TestConnSetWriteDeadline(t *testing.T) {
	expected := errors.New("mocked error")
	c := &Conn{
		MockSetWriteDeadline: func(t time.Time) error {
			return expected
		},
	}
	err := c.SetWriteDeadline(time.Time{})
	if !errors.Is(err, expected) {
		t.Fatal("not the error we expected", err)
	}
}