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import os
import socket
from optparse import Values
from shutil import rmtree
from tempfile import mkdtemp
from unittest import TestCase
from unittest.mock import Mock, patch
import hl7
from hl7 import __version__ as hl7_version
from hl7.client import CR, EB, SB, MLLPClient, MLLPException, mllp_send
class MLLPClientTest(TestCase):
def setUp(self):
# use a mock version of socket
self.socket_patch = patch("hl7.client.socket.socket")
self.mock_socket = self.socket_patch.start()
self.client = MLLPClient("localhost", 6666)
def tearDown(self):
# unpatch socket
self.socket_patch.stop()
def test_connect(self):
self.mock_socket.assert_called_once_with(socket.AF_INET, socket.SOCK_STREAM)
self.client.socket.connect.assert_called_once_with(("localhost", 6666))
def test_close(self):
self.client.close()
self.client.socket.close.assert_called_once_with()
def test_send(self):
self.client.socket.recv.return_value = "thanks"
result = self.client.send("foobar\n")
self.assertEqual(result, "thanks")
self.client.socket.send.assert_called_once_with("foobar\n")
self.client.socket.recv.assert_called_once_with(4096)
def test_send_message_unicode(self):
self.client.socket.recv.return_value = "thanks"
result = self.client.send_message("foobar")
self.assertEqual(result, "thanks")
self.client.socket.send.assert_called_once_with(b"\x0bfoobar\x1c\x0d")
def test_send_message_bytestring(self):
self.client.socket.recv.return_value = "thanks"
result = self.client.send_message(b"foobar")
self.assertEqual(result, "thanks")
self.client.socket.send.assert_called_once_with(b"\x0bfoobar\x1c\x0d")
def test_send_message_hl7_message(self):
self.client.socket.recv.return_value = "thanks"
message = hl7.parse(r"MSH|^~\&|GHH LAB|ELAB")
result = self.client.send_message(message)
self.assertEqual(result, "thanks")
self.client.socket.send.assert_called_once_with(
b"\x0bMSH|^~\\&|GHH LAB|ELAB\r\x1c\x0d"
)
def test_context_manager(self):
with MLLPClient("localhost", 6666) as client:
client.send("hello world")
self.client.socket.send.assert_called_once_with("hello world")
self.client.socket.close.assert_called_once_with()
def test_context_manager_exception(self):
with self.assertRaises(Exception):
with MLLPClient("localhost", 6666):
raise Exception()
# socket.close should be called via the with statement
self.client.socket.close.assert_called_once_with()
class MLLPSendTest(TestCase):
def setUp(self):
# patch to avoid touching sys and socket
self.socket_patch = patch("hl7.client.socket.socket")
self.mock_socket = self.socket_patch.start()
self.mock_socket().recv.return_value = "thanks"
self.stdout_patch = patch("hl7.client.stdout")
self.mock_stdout = self.stdout_patch.start()
self.stdin_patch = patch("hl7.client.stdin")
self.mock_stdin = self.stdin_patch.start()
self.stderr_patch = patch("hl7.client.stderr")
self.mock_stderr = self.stderr_patch.start()
self.exit_patch = patch("hl7.client.sys.exit")
self.mock_exit = self.exit_patch.start()
# we need a temporary directory
self.dir = mkdtemp()
self.write(SB + b"foobar" + EB + CR)
self.option_values = Values(
{
"port": 6661,
"filename": os.path.join(self.dir, "test.hl7"),
"verbose": True,
"loose": False,
"version": False,
}
)
self.options_patch = patch("hl7.client.OptionParser")
option_parser = self.options_patch.start()
self.mock_options = Mock()
option_parser.return_value = self.mock_options
self.mock_options.parse_args.return_value = (self.option_values, ["localhost"])
def tearDown(self):
# unpatch
self.socket_patch.stop()
self.options_patch.stop()
self.stdout_patch.stop()
self.stdin_patch.stop()
self.stderr_patch.stop()
self.exit_patch.stop()
# clean up the temp directory
rmtree(self.dir)
def write(self, content, path="test.hl7"):
with open(os.path.join(self.dir, path), "wb") as f:
f.write(content)
def test_send(self):
mllp_send()
self.mock_socket().connect.assert_called_once_with(("localhost", 6661))
self.mock_socket().send.assert_called_once_with(SB + b"foobar" + EB + CR)
self.mock_stdout.assert_called_once_with("thanks")
self.assertFalse(self.mock_exit.called)
def test_send_multiple(self):
self.mock_socket().recv.return_value = "thanks"
self.write(SB + b"foobar" + EB + CR + SB + b"hello" + EB + CR)
mllp_send()
self.assertEqual(
self.mock_socket().send.call_args_list[0][0][0], SB + b"foobar" + EB + CR
)
self.assertEqual(
self.mock_socket().send.call_args_list[1][0][0], SB + b"hello" + EB + CR
)
def test_leftover_buffer(self):
self.write(SB + b"foobar" + EB + CR + SB + b"stuff")
self.assertRaises(MLLPException, mllp_send)
self.mock_socket().send.assert_called_once_with(SB + b"foobar" + EB + CR)
def test_quiet(self):
self.option_values.verbose = False
mllp_send()
self.mock_socket().send.assert_called_once_with(SB + b"foobar" + EB + CR)
self.assertFalse(self.mock_stdout.called)
def test_port(self):
self.option_values.port = 7890
mllp_send()
self.mock_socket().connect.assert_called_once_with(("localhost", 7890))
def test_stdin(self):
self.option_values.filename = None
self.mock_stdin.return_value = FakeStream()
mllp_send()
self.mock_socket().send.assert_called_once_with(SB + b"hello" + EB + CR)
def test_loose_no_stdin(self):
self.option_values.loose = True
self.option_values.filename = None
self.mock_stdin.return_value = FakeStream()
mllp_send()
self.assertFalse(self.mock_socket().send.called)
self.mock_stderr().write.assert_called_with("--loose requires --file\n")
self.mock_exit.assert_called_with(1)
def test_loose_windows_newline(self):
self.option_values.loose = True
self.write(SB + b"MSH|^~\\&|foo\r\nbar\r\n" + EB + CR)
mllp_send()
self.mock_socket().send.assert_called_once_with(
SB + b"MSH|^~\\&|foo\rbar" + EB + CR
)
def test_loose_unix_newline(self):
self.option_values.loose = True
self.write(SB + b"MSH|^~\\&|foo\nbar\n" + EB + CR)
mllp_send()
self.mock_socket().send.assert_called_once_with(
SB + b"MSH|^~\\&|foo\rbar" + EB + CR
)
def test_loose_no_mllp_characters(self):
self.option_values.loose = True
self.write(b"MSH|^~\\&|foo\r\nbar\r\n")
mllp_send()
self.mock_socket().send.assert_called_once_with(
SB + b"MSH|^~\\&|foo\rbar" + EB + CR
)
def test_loose_send_mutliple(self):
self.option_values.loose = True
self.mock_socket().recv.return_value = "thanks"
self.write(b"MSH|^~\\&|1\r\nOBX|1\r\nMSH|^~\\&|2\r\nOBX|2\r\n")
mllp_send()
self.assertEqual(
self.mock_socket().send.call_args_list[0][0][0],
SB + b"MSH|^~\\&|1\rOBX|1" + EB + CR,
)
self.assertEqual(
self.mock_socket().send.call_args_list[1][0][0],
SB + b"MSH|^~\\&|2\rOBX|2" + EB + CR,
)
def test_version(self):
self.option_values.version = True
mllp_send()
self.assertFalse(self.mock_socket().connect.called)
self.mock_stdout.assert_called_once_with(str(hl7_version))
class FakeStream(object):
count = 0
def read(self, buf):
self.count += 1
if self.count == 1:
return SB + b"hello" + EB + CR
else:
return b""
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