micro/network/transport/memory_test.go

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package transport
import (
"context"
"os"
"testing"
)
func TestMemoryTransport(t *testing.T) {
tr := NewTransport()
ctx := context.Background()
// bind / listen
l, err := tr.Listen(ctx, "127.0.0.1:8080")
if err != nil {
t.Fatalf("Unexpected error listening %v", err)
}
defer l.Close()
cherr := make(chan error, 1)
// accept
go func() {
if nerr := l.Accept(func(sock Socket) {
for {
var m Message
if rerr := sock.Recv(&m); rerr != nil {
cherr <- rerr
return
}
if len(os.Getenv("INTEGRATION_TESTS")) == 0 {
t.Logf("Server Received %s", string(m.Body))
}
if cerr := sock.Send(&Message{
Body: []byte(`pong`),
}); cerr != nil {
cherr <- cerr
return
}
}
}); nerr != nil {
cherr <- err
}
}()
// dial
c, err := tr.Dial(ctx, "127.0.0.1:8080")
if err != nil {
t.Fatalf("Unexpected error dialing %v", err)
}
defer c.Close()
select {
case err := <-cherr:
t.Fatal(err)
default:
// send <=> receive
for i := 0; i < 3; i++ {
if err := c.Send(&Message{
Body: []byte(`ping`),
}); err != nil {
return
}
var m Message
if err := c.Recv(&m); err != nil {
return
}
if len(os.Getenv("INTEGRATION_TESTS")) == 0 {
t.Logf("Client Received %s", string(m.Body))
}
}
}
}
func TestListener(t *testing.T) {
tr := NewTransport()
ctx := context.Background()
// bind / listen on random port
l, err := tr.Listen(ctx, ":0")
if err != nil {
t.Fatalf("Unexpected error listening %v", err)
}
defer l.Close()
// try again
l2, err := tr.Listen(ctx, ":0")
if err != nil {
t.Fatalf("Unexpected error listening %v", err)
}
defer l2.Close()
// now make sure it still fails
l3, err := tr.Listen(ctx, ":8080")
if err != nil {
t.Fatalf("Unexpected error listening %v", err)
}
defer l3.Close()
if _, err := tr.Listen(ctx, ":8080"); err == nil {
t.Fatal("Expected error binding to :8080 got nil")
}
}