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93 lines
4.1 KiB
Python
93 lines
4.1 KiB
Python
"""Tests for Netmiko show helpers (IOSv leftover-prompt drain; no re-send)."""
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from __future__ import annotations
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import unittest
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import re
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from unittest.mock import MagicMock, patch
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from netx_api.ne_netmiko import drain_read_channel, send_show_command
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class DrainReadChannelTests(unittest.TestCase):
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def test_drains_until_idle(self) -> None:
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conn = MagicMock()
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conn.read_channel.side_effect = ["R2#\n", "", "", "", ""]
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out = drain_read_channel(conn, idle_reads=3, pause_sec=0.0)
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self.assertEqual(out, "R2#\n")
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self.assertGreaterEqual(conn.read_channel.call_count, 4)
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def test_clear_buffer_when_no_read_channel(self) -> None:
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conn = MagicMock(spec=["clear_buffer"])
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self.assertEqual(drain_read_channel(conn), "")
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conn.clear_buffer.assert_called_once()
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class SendShowCommandTests(unittest.TestCase):
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@patch("netx_api.ne_netmiko.drain_read_channel")
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def test_mikrotik_does_not_probe_prompt_after_drain(self, drain: MagicMock) -> None:
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conn = MagicMock()
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conn.device_type = "mikrotik_routeros_ssh"
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def delayed_routeros_output(**kwargs: object) -> str:
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# A prompt probe queues an old prompt before the actual output.
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if kwargs.get("auto_find_prompt", True):
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return ""
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return "name: MikroTik"
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conn.send_command.side_effect = delayed_routeros_output
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self.assertEqual(send_show_command(conn, "/system identity print"), "name: MikroTik")
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conn.send_command.assert_called_once()
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conn.find_prompt.assert_not_called()
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conn.send_command_timing.assert_not_called()
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drain.assert_called_once_with(conn)
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pattern = conn.send_command.call_args.kwargs["expect_string"]
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for prompt in ("[admin@MikroTik] >", "[ops@edge-router] /ip/firewall>"):
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self.assertIsNotNone(re.search(pattern, prompt))
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for echo in ("[admin@MikroTik]", "[admin@MikroTik] > /system resource print"):
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self.assertIsNone(re.search(pattern, echo))
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@patch("netx_api.ne_netmiko.drain_read_channel")
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def test_mikrotik_wrapped_script_does_not_require_exact_echo(self, drain: MagicMock) -> None:
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conn = MagicMock()
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conn.device_type = "mikrotik_routeros"
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conn.send_command.return_value = "finished"
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command = ':put "' + "x" * 600 + '"'
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self.assertEqual(send_show_command(conn, command, read_timeout=45), "finished")
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conn.send_command.assert_called_once()
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self.assertFalse(conn.send_command.call_args.kwargs["cmd_verify"])
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self.assertEqual(conn.send_command.call_args.kwargs["read_timeout"], 45)
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@patch("netx_api.ne_netmiko.drain_read_channel")
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def test_mikrotik_timeout_never_resends_write(self, drain: MagicMock) -> None:
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conn = MagicMock()
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conn.device_type = "mikrotik_routeros"
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conn.send_command.side_effect = TimeoutError("late prompt")
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with self.assertRaises(TimeoutError):
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send_show_command(conn, '/ip address add address=192.0.2.1/32 interface=lo')
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conn.send_command.assert_called_once()
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conn.send_command_timing.assert_not_called()
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@patch("netx_api.ne_netmiko.drain_read_channel")
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def test_drains_then_sends_once(self, drain: MagicMock) -> None:
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conn = MagicMock()
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conn.send_command.return_value = "*12:00:00 UTC"
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out = send_show_command(conn, "show clock", read_timeout=30)
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self.assertEqual(out, "*12:00:00 UTC")
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conn.send_command.assert_called_once()
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conn.send_command_timing.assert_not_called()
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drain.assert_called_once_with(conn)
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@patch("netx_api.ne_netmiko.drain_read_channel")
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def test_empty_output_does_not_resend(self, drain: MagicMock) -> None:
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conn = MagicMock()
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conn.send_command.return_value = ""
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out = send_show_command(conn, "show version", read_timeout=30)
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self.assertEqual(out, "")
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conn.send_command.assert_called_once()
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conn.send_command_timing.assert_not_called()
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drain.assert_called_once_with(conn)
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if __name__ == "__main__":
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unittest.main()
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