#!/usr/bin/env python3
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# Copyright (c) 2021-2022 Paul Mattes.
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# b3270 smoke tests

import requests
from subprocess import Popen, PIPE, DEVNULL
import unittest
import Common.Test.cti as cti

class TestB3270Smoke(cti.cti):

    # b3270 NVT smoke test
    def test_b3270_nvt_smoke(self):

        # Start 'nc' to read b3270's output.
        nc = cti.copyserver()

        # Start b3270.
        b3270 = Popen(cti.vgwrap(['b3270']), stdin=PIPE, stdout=DEVNULL)
        self.children.append(b3270)

        # Feed b3270 some actions.
        b3270.stdin.write(b'<b3270-in>\n')
        b3270.stdin.write(f'<run actions="Open(a:c:t:127.0.0.1:{nc.port}) String(abc) Enter() Disconnect()"/>\n'.encode('utf8'))
        b3270.stdin.flush()

        # Make sure they are passed through.
        out = nc.data()
        self.assertEqual(b'abc\r\n', out)

        # Wait for the processes to exit.
        b3270.stdin.write(b'</b3270-in>\n')
        b3270.stdin.close()
        self.vgwait(b3270)

if __name__ == '__main__':
    unittest.main()
