chore(tests): add hello integration test

Author: pixel365

tests/hello_test.go

@@ -0,0 +1,47 @@
+package tests
+
+import (
+	"crypto/tls"
+	"testing"
+	"time"
+
+	"github.com/pixel365/goepp"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+func TestHello(t *testing.T) {
+	addr := netAddr()
+	conn, err := tls.Dial("tcp", addr, &tls.Config{
+		MinVersion:         tls.VersionTLS12,
+		InsecureSkipVerify: true, //nolint:gosec
+	})
+
+	require.NoError(t, err)
+
+	_ = conn.SetDeadline(time.Now().Add(10 * time.Second))
+	_, _ = readEPPFrame(conn)
+
+	payload := `
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<epp xmlns="urn:ietf:params:xml:ns:epp-1.0">
+  <hello/>
+</epp>
+`
+
+	err = writeEPPFrame(conn, []byte(payload))
+	require.NoError(t, err)
+
+	resp, err := readEPPFrame(conn)
+	require.NoError(t, err)
+
+	parser := goepp.CmdParser{}
+	_, err = parser.Parse(resp)
+
+	require.Error(t, err)
+	assert.Contains(t, err.Error(), "exactly one command must be present")
+
+	t.Cleanup(func() {
+		_ = conn.Close()
+	})
+}