add: test to get exception if certificate CN or SAN does not match th…

…e expected OpenSSL hostname

test/integration/invalid_certificate_name_test.rb

@@ -0,0 +1,32 @@
+# frozen_string_literal: true
+
+# Unit test to check commands without TCP
+class InvalidCertificateNameIntegrationTest < BaseIntegrationTest
+
+  # initialize before tests
+  def setup
+    # create some message vars and sources
+    super
+    # create service instance
+    @smtpd = MidiSmtpServerTest.new(
+      '5555',
+      '127.0.0.1',
+      1,
+      do_dns_reverse_lookup: false,
+      auth_mode: :AUTH_OPTIONAL,
+      tls_mode: :TLS_REQUIRED,
+      tls_cert_cn: 'invalid.hostname',
+      pipelining_extension: false,
+      internationalization_extensions: true
+    )
+    # start the daemon to run real life integration tests
+    @smtpd.start
+  end
+
+  ### TEST SUITE
+
+  def test_net_smtp_auth_login_and_simple_send_1_mail_with_ssl
+    assert_raises(OpenSSL::SSL::SSLError) { net_smtp_send_mail @envelope_mail_from, @envelope_rcpt_to, @doc_simple_mail, 'administrator', 'password', :login, true }
+  end
+
+end