This is the v1 version, had the v2 before.

server/server_test.go

@@ -0,0 +1,49 @@
+package server_test
+
+import (
+	"bufio"
+	"net"
+	"testing"
+
+	"github.com/emersion/go-imap/backend/memory"
+	"github.com/emersion/go-imap/server"
+)
+
+// Extnesions that are always advertised by go-imap server.
+const builtinExtensions = "LITERAL+ SASL-IR CHILDREN UNSELECT MOVE IDLE APPENDLIMIT"
+
+func testServer(t *testing.T) (s *server.Server, conn net.Conn) {
+	bkd := memory.New()
+
+	l, err := net.Listen("tcp", "127.0.0.1:0")
+	if err != nil {
+		t.Fatal("Cannot listen:", err)
+	}
+
+	s = server.New(bkd)
+	s.AllowInsecureAuth = true
+
+	go s.Serve(l)
+
+	conn, err = net.Dial("tcp", l.Addr().String())
+	if err != nil {
+		t.Fatal("Cannot connect to server:", err)
+	}
+
+	return
+}
+
+func TestServer_greeting(t *testing.T) {
+	s, conn := testServer(t)
+	defer s.Close()
+	defer conn.Close()
+
+	scanner := bufio.NewScanner(conn)
+
+	scanner.Scan() // Wait for greeting
+	greeting := scanner.Text()
+
+	if greeting != "* OK [CAPABILITY IMAP4rev1 "+builtinExtensions+" AUTH=PLAIN] IMAP4rev1 Service Ready" {
+		t.Fatal("Bad greeting:", greeting)
+	}
+}