ghostream/stream/telnet/telnet_test.go

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package telnet
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import (
"bytes"
"io/ioutil"
"math/rand"
"net"
"testing"
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"time"
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)
// TestTelnetOutput creates a TCP client that connects to the server and get one image.
func TestTelnetOutput(t *testing.T) {
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// Try to start Telnet server while it is disabled
Serve(&Options{Enabled: false})
StartASCIIArtStream("demo", ioutil.NopCloser(bytes.NewReader([]byte{})))
if GetNumberConnectedSessions("demo") != 0 {
t.Fatalf("Mysteriously found %d connected clients", GetNumberConnectedSessions("demo"))
}
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// Enable and start Telnet server
Serve(&Options{
Enabled: true,
ListenAddress: "127.0.0.1:8023",
Width: 80,
Height: 45,
Delay: 50,
})
// Generate a random image, that should be given by FFMPEG
sampleImage := make([]byte, Cfg.Width*Cfg.Height)
rand.Read(sampleImage)
reader := ioutil.NopCloser(bytes.NewBuffer(sampleImage))
// Send the image to the server
StartASCIIArtStream("demo", reader)
// Connect to the Telnet server
client, err := net.Dial("tcp", Cfg.ListenAddress)
if err != nil {
t.Fatalf("Error while connecting to the TCP server: %s", err)
}
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// Say goodbye
_, err = client.Write([]byte("exit"))
if err != nil {
t.Fatalf("Error while closing TCP connection: %s", err)
}
client, err = net.Dial("tcp", Cfg.ListenAddress)
if err != nil {
t.Fatalf("Error while connecting to the TCP server: %s", err)
}
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// Create a sufficient large buffer
buff := make([]byte, 3*len(sampleImage))
// Read the input, and ensure that it is correct
// [GHOSTREAM]
// Enter stream ID:
n, err := client.Read(buff)
if err != nil {
t.Fatalf("Error while reading from TCP: %s", err)
}
if n != len("[GHOSTREAM]\nEnter stream ID: ") {
t.Fatalf("Read %d bytes from TCP, expected %d, read: %s", n, len("[GHOSTREAM]\nEnter stream ID: "), buff[:n])
}
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// Send wrong stream ID
_, err = client.Write([]byte("toto"))
if err != nil {
t.Fatalf("Error while writing from TCP: %s", err)
}
n, err = client.Read(buff)
if err != nil {
t.Fatalf("Error while reading from TCP: %s", err)
}
if n == len("Unknown stream ID.\n") {
_, err = client.Read(buff)
if err != nil {
t.Fatalf("Error while reading from TCP: %s", err)
}
}
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// Send stream ID
_, err = client.Write([]byte("demo"))
if err != nil {
t.Fatalf("Error while writing from TCP: %s", err)
}
// Read the generated image
n, err = client.Read(buff)
if err != nil {
t.Fatalf("Error while reading the image from TCP: %s", err)
}
// Ensure that the size of the image is correct
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if n < 10800 {
t.Fatalf("Read %d from TCP, expected more than 10800", n)
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}
if GetNumberConnectedSessions("demo") != 1 {
t.Fatalf("Expected one telnet client only, found %d", GetNumberConnectedSessions("demo"))
}
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// Close connection, ensure that the counter got decremented
err = client.Close()
if err != nil {
t.Fatalf("Error while closing telnet connection: %s", err)
}
// Wait for timeout
time.Sleep(time.Second)
if GetNumberConnectedSessions("demo") != 0 {
t.Fatalf("Expected no telnet client, found %d", GetNumberConnectedSessions("demo"))
}
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}