Mirror of github.com/gissleh/irc
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package irctest
import (
"bufio"
"net"
"strings"
"sync"
"time"
)
// An Interaction is a "simulated" server that will trigger the
// client.
type Interaction struct {
wg sync.WaitGroup
Strict bool
Lines []InteractionLine
Log []string
Failure *InteractionFailure
}
// Listen listens for a client in a separate goroutine.
func (interaction *Interaction) Listen() (addr string, err error) {
listener, err := net.Listen("tcp", "127.0.0.1:0")
if err != nil {
return "", err
}
lines := make([]InteractionLine, len(interaction.Lines))
copy(lines, interaction.Lines)
go func() {
interaction.wg.Add(1)
defer interaction.wg.Done()
conn, err := listener.Accept()
if err != nil {
interaction.Failure = &InteractionFailure{
Index: -1, NetErr: err,
}
return
}
defer conn.Close()
reader := bufio.NewReader(conn)
for i := 0; i < len(lines); i++ {
line := lines[i]
if line.Server != "" {
_ = conn.SetWriteDeadline(time.Now().Add(time.Second * 2))
_, err := conn.Write(append([]byte(line.Server), '\r', '\n'))
if err != nil {
interaction.Failure = &InteractionFailure{
Index: i, NetErr: err,
}
return
}
} else if line.Client != "" {
_ = conn.SetReadDeadline(time.Now().Add(time.Second * 2))
input, err := reader.ReadString('\n')
if err != nil {
interaction.Failure = &InteractionFailure{
Index: i, NetErr: err,
}
return
}
input = strings.Replace(input, "\r", "", -1)
input = strings.Replace(input, "\n", "", 1)
match := line.Client
success := false
if strings.HasSuffix(match, "*") {
success = strings.HasPrefix(input, match[:len(match)-1])
} else {
success = match == input
}
interaction.Log = append(interaction.Log, input)
if !success {
if !interaction.Strict {
i--
continue
}
interaction.Failure = &InteractionFailure{
Index: i, Result: input,
}
return
}
} else if line.Callback != nil {
err := line.Callback()
if err != nil {
interaction.Failure = &InteractionFailure{
Index: i, CBErr: err,
}
return
}
}
}
}()
return listener.Addr().String(), nil
}
// Wait waits for the setup to be done. It's safe to check
// Failure after that.
func (interaction *Interaction) Wait() {
interaction.wg.Wait()
}
// InteractionFailure signifies a test failure.
type InteractionFailure struct {
Index int
Result string
NetErr error
CBErr error
}
// InteractionLine is part of an interaction, whether it is a line
// that is sent to a client or a line expected from a client.
type InteractionLine struct {
Client string
Server string
Callback func() error
}