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import unittest
from unittest import mock
from osrf_pycommon.terminal_utils import is_tty
class TestTerminalUtils(unittest.TestCase):
def test_is_tty(self):
mock_stream = object()
self.assertFalse(is_tty(mock_stream))
mock_stream = mock.MagicMock()
mock_stream.isatty = mock.MagicMock(return_value=None)
self.assertFalse(is_tty(mock_stream))
mock_stream.isatty = mock.MagicMock(return_value=False)
self.assertFalse(is_tty(mock_stream))
mock_stream.isatty = mock.MagicMock(return_value=True)
self.assertTrue(is_tty(mock_stream))
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